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Table of Contents

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D. C. 20549

FORM 10-K

(Mark One)

☒ | ANNUAL REPORT PURSUANT TO SECTION 13 or 15 (d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended September 30, 2025

or

☐ | TRANSITION REPORT PURSUANT TO SECTION 13 or 15 (d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to

Commission File Number |  | Name of Registrant, Address of Principal Executive Offices and Telephone Number |  | State of Incorporation |  | I.R.S. Employer Identification Number
1-16681 |  | Spire Inc. 700 Market Street St. Louis, MO 63101 314-342-0500 |  | Missouri |  | 74-2976504
1-1822 |  | Spire Missouri Inc. 700 Market Street St. Louis, MO 63101 314-342-0500 |  | Missouri |  | 43-0368139
2-38960 |  | Spire Alabama Inc. 605 Richard Arrington Blvd N Birmingham, AL 35203 205-326-8100 |  | Alabama |  | 63-0022000

Securities registered pursuant to Section 12(b) of the Securities Exchange Act of 1934, as amended (the “Exchange Act”) (only applicable to Spire Inc.):

Title of each class | Trading Symbol(s) | Name of each exchange on which registered
Common Stock $1.00 par value | SR | New York Stock Exchange LLC
Depositary Shares, each representing a 1/1,000 th interest in a share of 5.90% Series A Cumulative Redeemable Perpetual Preferred Stock, par value $25.00 per share | SR.PRA | New York Stock Exchange LLC

Securities registered pursuant to Section 12(g) of the Exchange Act: None

Indicate by check mark if each registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act of 1933, as amended.

Spire Inc. | Yes ☒ | No ☐ | Spire Missouri Inc. | Yes ☐ | No ☒ | Spire Alabama Inc. | Yes ☐ | No ☒

Indicate by check mark if each registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Exchange Act.

Spire Inc. | Yes ☐ | No ☒ | Spire Missouri Inc. | Yes ☐ | No ☒ | Spire Alabama Inc. | Yes ☐ | No ☒

Indicate by check mark whether each registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Exchange Act during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.

Spire Inc. | Yes ☒ | No ☐ | Spire Missouri Inc. | Yes ☒ | No ☐ | Spire Alabama Inc. | Yes ☒ | No ☐

Indicate by check mark whether each registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).

Spire Inc. | Yes ☒ | No ☐ | Spire Missouri Inc. | Yes ☒ | No ☐ | Spire Alabama Inc. | Yes ☒ | No ☐

Table of Contents

Indicate by check mark whether each registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

|  | Large accelerated filer |  | Accelerated filer |  | Non- accelerated filer |  | Smaller reporting company |  | Emerging growth company
Spire Inc. |  | ☒ |  | ☐ |  | ☐ |  | ☐ |  | ☐
Spire Missouri Inc. |  | ☐ |  | ☐ |  | ☒ |  | ☐ |  | ☐
Spire Alabama Inc. |  | ☐ |  | ☐ |  | ☒ |  | ☐ |  | ☐

If an emerging growth company, indicate by check mark if each registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.

Spire Inc. | ☐ | Spire Missouri Inc. | ☐ | Spire Alabama Inc. | ☐

Indicate by check mark whether each registrant has filed a report on and attestation to its management’s assessment of the effectiveness of its internal control over financial reporting under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7262(b)) by the registered public accounting firm that prepared or issued its audit report.

Spire Inc. | ☒ | Spire Missouri Inc. | ☐ | Spire Alabama Inc. | ☐

If securities are registered pursuant to Section 12(b) of the Exchange Act, indicate by check mark whether the financial statements of each registrant included in the filing reflect the correction of an error to previously issued financial statements.

Spire Inc. | ☐ | Spire Missouri Inc. | ☐ | Spire Alabama Inc. | ☐

Indicate by check mark whether any of those error corrections are restatements that required a recovery analysis of incentive-based compensation received by any of the registrant's executive officers during the relevant recovery period pursuant to §240.10D-1(b).

Spire Inc. | ☐ | Spire Missouri Inc. | ☐ | Spire Alabama Inc. | ☐

Indicate by check mark whether each registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).

Spire Inc. | Yes ☐ | No ☒ | Spire Missouri Inc. | Yes ☐ | No ☒ | Spire Alabama Inc. | Yes ☐ | No ☒

The aggregate market value of the common equity held by non-affiliates of Spire Inc. amounted to $4,420,436,221 as of March 31, 2025. All of Spire Missouri Inc.’s and Spire Alabama Inc.’s equity securities are owned by Spire Inc., their parent company and a reporting company under the Exchange Act.

The number of shares outstanding of each registrant’s common stock, as of November 10, 2025, was as follows:

Spire Inc. |  | Common Stock, par value $1.00 per share |  | 59,038,129
Spire Missouri Inc. |  | Common Stock, par value $1.00 per share (all owned by Spire Inc.) |  | 26,822
Spire Alabama Inc. |  | Common Stock, par value $0.01 per share (all owned by Spire Inc.) |  | 1,972,052

This combined Form 10-K represents separate filings by Spire Inc., Spire Missouri Inc., and Spire Alabama Inc. Information contained herein relating to an individual registrant is filed by that registrant on its own behalf. Each registrant makes no representation as to information relating to the other registrants, except that information relating to Spire Missouri Inc. and Spire Alabama Inc. is also attributed to Spire Inc.

Spire Missouri Inc. and Spire Alabama Inc. meet the conditions set forth in General Instructions I(1)(a) and (b) of Form 10-K and are therefore filing this Form 10-K with the reduced disclosure format specified in General Instructions I(2) to Form 10-K.

DOCUMENTS INCORPORATED BY REFERENCE

Portions of proxy statement for Spire Inc. to be filed on or about December 16, 2025 — Part III.

Certain exhibits as indicated in Part IV.

Table of Contents

|  | Page
GLOSSARY OF KEY TERMS AND ABBREVIATIONS | 2
PART I | 3
FORWARD-LOOKING STATEMENTS | 3
Item 1 | Business | 4
Item 1A | Risk Factors | 10
Item 1B | Unresolved Staff Comments | 21
Item 1C | Cybersecurity | 21
Item 2 | Properties | 22
Item 3 | Legal Proceedings | 22
Item 4 | Mine Safety Disclosures | 22
Information about our Executive Officers (Item 401(b) of Regulation S-K) | 23
PART II |  | 24
Item 5 | Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities | 24
Item 6 | (Reserved) | 25
Item 7 | Management’s Discussion and Analysis of Financial Condition and Results of Operations | 26
Item 7A | Quantitative and Qualitative Disclosures About Market Risk | 39
Item 8 | Financial Statements and Supplementary Data | 40
Item 9 | Changes in and Disagreements with Accountants on Accounting and Financial Disclosure | 108
Item 9A | Controls and Procedures | 108
Item 9B | Other Information | 109
Item 9C | Disclosure Regarding Foreign Jurisdictions that Prevent Inspections | 109
PART III |  | 110
Item 10 | Directors, Executive Officers and Corporate Governance | 110
Item 11 | Executive Compensation | 110
Item 12 | Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters | 110
Item 13 | Certain Relationships and Related Transactions, and Director Independence | 110
Item 14 | Principal Accounting Fees and Services | 110
PART IV |  | 111
Item 15 | Exhibits, Financial Statement Schedules | 111
Item 16 | Form 10-K Summary | 116
SIGNATURES | 117

1

Table of Contents

GLOSSARY OF KEY TERMS AND ABBREVIATIONS

AOCI |  | Accumulated other comprehensive income or loss |  | NYMEX |  | New York Mercantile Exchange, Inc.
APSC |  | Alabama Public Service Commission |  | NYSE |  | New York Stock Exchange
ASC |  | Accounting Standards Codification |  | O&M |  | Operation and maintenance expense
ASU |  | Accounting Standards Update |  | OCI |  | Other comprehensive income or loss
CCF |  | A gas measurement which represents a unit of volume equal to one hundred cubic feet |  | OFO |  | Operational Flow Order
CCM |  | Cost Control Measure |  | PGA |  | Purchased Gas Adjustment
Company |  | Spire and its subsidiaries unless the context suggests otherwise |  | RSE |  | Rate Stabilization and Equalization
EPS |  | Earnings per share |  | SEC |  | U.S. Securities and Exchange Commission
ESR |  | Enhanced Stability Reserve |  | Spire |  | Spire Inc.
FASB |  | Financial Accounting Standards Board |  | Spire Alabama |  | Spire Alabama Inc.
FERC |  | Federal Energy Regulatory Commission |  | Spire EnergySouth |  | Spire EnergySouth Inc., parent of Spire Gulf and Spire Mississippi
GAAP |  | Accounting principles generally accepted in the United States of America |  | Spire Gulf |  | Spire Gulf Inc.
Gas Marketing |  | Segment including Spire Marketing, which provides natural gas marketing services |  | Spire Marketing |  | Spire Marketing Inc.
Gas Utility |  | Segment including the operations of the Utilities |  | Spire Mississippi |  | Spire Mississippi Inc.
GSA |  | Gas Supply Adjustment |  | Spire Missouri |  | Spire Missouri Inc.
ICE |  | Intercontinental Exchange |  | Spire MoGas Pipeline or MoGas |  | Spire MoGas Pipeline LLC, a 263-mile FERC-regulated natural gas pipeline, together with Omega Pipeline, a connected 75-mile distribution system in Missouri
ISRS |  | Infrastructure System Replacement Surcharge |  | Spire STL Pipeline |  | Spire STL Pipeline LLC, a 65-mile FERC-regulated natural gas pipeline it constructed and operates to deliver natural gas into eastern Missouri
Midstream |  | Segment including Spire Storage, Spire STL Pipeline and Spire MoGas Pipeline |  | Spire Storage |  | The physical natural gas storage operations of Spire Storage West LLC and Spire Storage Salt Plains LLC
MMBtu |  | Million British thermal units |  | U.S. |  | United States
MoPSC |  | Missouri Public Service Commission |  | Utilities |  | Spire Missouri, Spire Alabama, and the subsidiaries of Spire EnergySouth
MSPSC |  | Mississippi Public Service Commission |  |  |  |

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PART I

FORWA RD-LOOKING STATEMENTS

Certain matters discussed in this report, excluding historical information, include forward-looking statements. Certain words, such as “may,” “anticipate,” “believe,” “estimate,” “expect,” “intend,” “plan,” “seek,” “target,” and similar words and expressions identify forward-looking statements that involve uncertainties and risks. Future developments may not be in accordance with our current expectations or beliefs and the effect of future developments may not be those anticipated. Among the factors that may cause results or outcomes to differ materially from those contemplated in any forward-looking statement are:

•
Weather conditions and catastrophic events, particularly severe weather in U.S. natural gas producing areas;
•
Volatility in gas prices, particularly sudden and sustained changes in natural gas prices, including the related impact on margin deposits associated with the use of natural gas derivative instruments, and the impact on our competitive position in relation to suppliers of alternative heating sources, such as electricity;
•
Changes in gas supply and pipeline availability, including as a result of decisions by natural gas producers to reduce production or shut in producing natural gas wells and expiration or termination of existing supply and transportation arrangements that are not replaced with contracts with similar terms and pricing, as well as other changes that impact supply for and access to the markets in which our subsidiaries transact business;
•
Acquisitions may not achieve their intended results;
•
Legislative, regulatory and judicial mandates and decisions, some of which may be retroactive, including those affecting:
•
allowed rates of return and recovery of prudent costs,
•
incentive regulation,
•
industry structure,
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purchased gas adjustment provisions,
•
rate design structure and implementation,
•
capital structures established for rate-setting purposes,
•
regulatory assets and liabilities,
•
non-regulated and affiliate transactions,
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franchise renewals,
•
authorization to operate facilities,
•
environmental or safety matters, including the potential impact of legislative and regulatory actions related to climate change and pipeline safety and security,
•
taxes,
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pension and other postretirement benefit liabilities and funding obligations, or
•
accounting standards;
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The results of litigation;
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The availability of and access to, in general, funds to meet our debt obligations prior to or when they become due and to fund our operations and necessary capital expenditures, either through (i) cash on hand, (ii) operating cash flow, or (iii) access to the capital markets;
•
Retention of, ability to attract, ability to collect from, and conservation efforts of, customers;
•
Our ability to comply with all covenants in our indentures and credit facilities any violations of which, if not cured in a timely manner, could trigger a default of our obligations;
•
Energy commodity market conditions;
•
Discovery of material weakness in internal controls;
•
The disruption, failure or malfunction of our operational and information technology systems, including due to cyberattacks; and
•
Employee workforce issues, including but not limited to labor disputes, the inability to attract and retain key talent, and future wage and employee benefit costs, including costs resulting from changes in discount rates and returns on benefit plan assets.

Readers are urged to consider the risks, uncertainties, and other factors that could affect our business as described in this report. All forward-looking statements made in this report rely upon the safe harbor protections provided under the Private Securities Litigation Reform Act of 1995. We do not, by including this statement, assume any obligation to review or revise any particular forward-looking statement in light of future events.

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Ite m 1. Business

OVERVIEW

Spire Inc. (“Spire” or the “Company”) was formed in 2000 and is the holding company for Spire Missouri Inc. (“Spire Missouri”), Spire Alabama Inc. (“Spire Alabama”), other gas utilities, and gas-related businesses. Spire Missouri was formed in 1857, and Spire Alabama was formed in 1948 by the merger of two gas companies. Spire is committed to transforming its business and pursuing growth through growing organically, investing in infrastructure, and advancing through innovation. The Company has three reportable business segments: Gas Utility, Gas Marketing and Midstream, which are further described below.

The Gas Utility segment includes the regulated operations of Spire Missouri, Spire Alabama, Spire Gulf Inc. (“Spire Gulf”) and Spire Mississippi Inc. (“Spire Mississippi”) (collectively, the “Utilities”). Due to the seasonal nature of the Utilities’ business and the volumetric Spire Missouri rate design, earnings of Spire and each of the Utilities are typically concentrated during the heating season of November through April of each fiscal year.

The Gas Marketing segment includes Spire Marketing Inc. (“Spire Marketing”), a wholly owned subsidiary providing natural gas marketing services.

The Midstream segment includes Spire STL Pipeline LLC (“Spire STL Pipeline”), Spire MoGas Pipeline LLC (“Spire MoGas Pipeline”), and Spire Storage (consisting of the operations of Spire Storage West LLC and Spire Storage Salt Plains LLC), which are subsidiaries engaged in the transportation and storage of natural gas.

Other components of the Company’s consolidated information include Spire’s subsidiaries engaged in the operation of a propane pipeline and risk management, among other activities, and unallocated corporate items, including certain debt and associated interest costs.

Company News and Information

Spire uses its website, SpireEnergy.com, as its primary channel for distribution of important information including news releases, analyst presentations and financial information. The information Spire, Spire Missouri and Spire Alabama file or furnish to the United States (U.S.) Securities and Exchange Commission ("SEC"), including annual reports on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K and their amendments, and proxy statements are available free of charge under “Filings & Reports” in the Investors section of Spire’s website, SpireEnergy.com, as soon as reasonably practical after the information is filed with or furnished to the SEC. Information contained on Spire’s website is not incorporated by reference in this report. The SEC also maintains a website that contains Spire’s SEC filings (sec.gov).

Human Capital Resources

As of September 30, 2025, Spire had 3,497 employees, including 1,956 for Spire Missouri and 748 for Spire Alabama. We believe that:

1.
the safety and well-being of our employees, customers and communities is one of our most important responsibilities,
2.
the development, education and advancement of employees is key to delivering a strong energy future, and
3.
inclusion is a core value, embracing differences and fostering a sense of belonging for each other and those we serve.

We continue to implement processes, procedures and programs that reflect our focus on consistently reducing our employee injury and motor vehicle accident rates. Our Good Catch program and Field Safety Observations encourage employees to proactively identify, mitigate and report workplace hazards, reducing potential work-related injuries. We also utilize safety cameras in all Company vehicles, which are accompanied by real-time, in-cab driver alerts and virtual and managed driver coaching, to promote safe driving habits. In 2025, core driving metrics showed significant improvements in areas of speed, following distance, distracted driving and positive driving behaviors. Also in 2025, senior management significantly increased engagement with safety leaders throughout the Company in new and more direct ways to promote safety awareness, communications, alignment of priorities and to address pressing issues in the field.

Supporting wellness, we offer incentives for weight management and gym membership, as well as employee assistance programs to provide counseling services and emotional support, and we have a formalized comprehensive well-being program that focuses on the physical, emotional, social and financial health of every employee.

All employees have access to a comprehensive suite of development resources, including customized training programs, developmental assessments, specialized degree opportunities, and partnerships with leading organizations offering industry-specific courses, leadership and management workshops, and computer application development seminars. In

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2025, Spire delivered tailored leadership development programs across all organizational levels. For directors, managing directors, and officers, we continued our Leadership Development Series, emphasizing inclusive leadership and exemplary management practices. For leaders in field operations, we facilitated the Leading the Field program, which combines two-day, instructor-led sessions with computer-based training and structured manager engagement. Frontline leaders participated in the Leading Spire Series, designed to enhance leadership capabilities, business acumen, and people management skills. Additionally, with the exception of officers, all employees are eligible for up to $6,000 annually in tuition assistance and have access to the Spire Learning Center, our internal learning management system that supports ongoing education and skill development. In their first year, each construction and maintenance employee receives 80 hours of safety training, while each service and installation employee receives 200 hours of training. Field operations employees average 24 hours of technical and procedural training annually.

Our Human Rights Policy demonstrates that Spire understands its universal responsibility to respect human rights and provides the basis for publicly affirming our values and embedding the responsibility into Spire’s operations and the way we do business.

The Company believes labor relations with its employees are good. Should that condition change, the Company could experience labor disputes, work stoppages or other disruptions that could negatively impact the Company’s system operations, customer service, results of operations and cash flows.

The following table presents the Company’s various labor agreements as of September 30, 2025.

|  |  |  | Employees |  |  | Contract Start |  | Contract End
Union |  | Local |  | Covered |  |  | Date |  | Date
Spire Missouri |  |  |  |  |  |  |  |  |
United Steel, Paper and Forestry, Rubber Manufacturing, Allied- Industrial and Service Workers International Union (USW) |  | 884 |  |  | 67 |  |  | August 1, 2024 |  | July 31, 2027
USW |  | 11-6 |  |  | 911 |  |  | August 1, 2024 |  | July 31, 2027
USW |  | 11-6-03 |  |  | 58 |  |  | August 1, 2024 |  | July 31, 2027
USW |  | 12561 |  |  | 133 |  |  | August 26, 2025 |  | July 31, 2028
USW |  | 14228 |  |  | 40 |  |  | August 26, 2025 |  | July 31, 2028
USW |  | 11-267 |  |  | 28 |  |  | August 26, 2025 |  | July 31, 2028
Gas Workers Metal Trades locals of the United Association of Journeyman and Apprentices of the Plumbing and Pipefitting Industry of the United States and Canada |  | 781-Kansas City |  |  | 235 |  |  | August 26, 2025 |  | July 31, 2028
Gas Workers Metal Trades locals of the United Association of Journeyman and Apprentices of the Plumbing and Pipefitting Industry of the United States and Canada |  | 781-Monett |  |  | 49 |  |  | August 26, 2025 |  | July 31, 2028
Total Spire Missouri |  |  |  |  | 1,521 |  |  |  |  |
Spire Alabama |  |  |  |  |  |  |  |  |
USW |  | 12030 |  |  | 193 |  |  | May 1, 2023 |  | April 30, 2026
United Association of Gas Fitters |  | 548 |  |  | 196 |  |  | May 1, 2025 |  | April 30, 2028
Total Spire Alabama |  |  |  |  | 389 |  |  |  |  |
Spire Gulf |  |  |  |  |  |  |  |  |
USW |  | 541 |  |  | 59 |  |  | August 1, 2023 |  | July 31, 2026
Total Spire |  |  |  |  | 1,969 |  |  |  |  |

GAS UTILITY

Overview

Spire Missouri is a public utility engaged in the purchase, retail distribution and sale of natural gas. Spire Missouri is the largest natural gas distribution utility system in Missouri, serving approximately 1.2 million residential, commercial and industrial customers in St. Louis, Kansas City, and other areas in Missouri. Spire Missouri purchases natural gas in the wholesale market from producers and marketers and ships the gas through interstate pipelines into its own distribution facilities for sale to residential, commercial and industrial customers. Spire Missouri also transports gas through its distribution system for certain larger customers who buy their own gas on the wholesale market. Spire Missouri delivers natural gas to customers at rates and in accordance with tariffs authorized by the Missouri Public Service Commission ("MoPSC"), primarily through rate cases that can take up to eleven months to be finalized. The earnings of Spire Missouri are primarily generated by the sale of heating energy.

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Spire Alabama is a public utility engaged in the purchase, retail distribution and sale of natural gas principally in central and northern Alabama, serving more than 0.4 million residential, commercial and industrial customers. Spire Alabama is the largest natural gas distribution utility in the state of Alabama and is regulated by the Alabama Public Service Commission ("APSC"). Among the cities served by Spire Alabama are Birmingham, the center of the largest metropolitan area in the state, and Montgomery, the state capital. Spire Alabama purchases natural gas through interstate and intrastate suppliers and distributes the purchased gas through its distribution facilities for sale to residential, commercial, and industrial customers and other end-users of natural gas. Spire Alabama also transports gas through its distribution system for certain large commercial and industrial customers for a transportation fee. For most of these transportation service customers, Spire Alabama also purchases gas on the wholesale market for sale to the customer upon delivery to the Spire Alabama distribution system. All Spire Alabama services are provided to customers at rates and in accordance with tariffs authorized by the APSC.

Spire Gulf and Spire Mississippi (collectively, “Spire EnergySouth”) are utilities engaged in the purchase, retail distribution and sale of natural gas to 0.1 million customers in the Mobile, Alabama area and south-central Mississippi. Spire Gulf is regulated by the APSC, and Spire Mississippi is regulated by the Mississippi Public Service Commission ("MSPSC").

The Utilities seek to provide reliable natural gas services at a reasonable cost, while maintaining and building secure and dependable infrastructures. The Utilities’ strategies focus on improving both performance and the ability to recover their authorized distribution costs and rates of return. The Utilities’ distribution costs are the essential, primarily fixed, expenditures they must incur to operate and maintain more than 60,000 miles of mains and services comprising their natural gas distribution systems and related storage facilities. The Utilities’ distribution costs include wages and employee benefit costs, depreciation and maintenance expenses, and other regulated utility operating expenses, excluding natural and propane gas expense. Distribution costs are considered in the rate-making process, and recovery of these types of costs is included in revenues generated through the Utilities’ tariff rates approved by their respective public service commissions.

Spire Missouri and Spire Alabama also have off-system sales and capacity-released income streams that are regulated by tariff but remain subject to fluctuations in market conditions. Some of the factors impacting the level of off-system sales include the availability and cost of Spire’s natural gas supply, the weather in its service areas and the weather in other markets. When Spire’s service areas experience warmer-than-normal weather while other markets experience colder weather or supply constraints, some of Spire’s natural gas supply is available for sale to third parties not on Spire’s system.

The Utilities work actively to reduce the impact of wholesale natural gas price volatility on their costs by strategically structuring their natural gas supply portfolios to increase their gas supply availability and pricing alternatives. They may also use derivative instruments to hedge against significant changes in the commodity price of natural gas. Nevertheless, the overall cost of purchased gas remains subject to fluctuations in market conditions. The Purchased Gas Adjustment ("PGA") clause of Spire Missouri, Spire Gulf and Spire Mississippi and the Gas Supply Adjustment ("GSA") rider of Spire Alabama allow the Utilities to flow through to customers, subject to prudence review by the public service commissions, the cost of purchased gas supplies, including costs, cost reductions and related carrying costs associated with the use of derivative instruments to mitigate volatility in the cost of natural gas. As of September 30, 2025, Spire Missouri had active derivative positions, but Spire Alabama has had no gas supply derivative instrument activity since 2010. The Utilities believe they will continue to be able to obtain sufficient gas supply. The price of natural gas supplies and other economic conditions may affect sales volumes, due to the conservation efforts of customers, and cash flows associated with the timing of collection of gas costs and related accounts receivable from customers.

Operating Revenues, Customers, Franchises and Competition

The following tables present information on Spire’s revenues and volume sold and transported (before intersegment eliminations), and annual average numbers of customers for the three years ended September 30, 2025, 2024 and 2023.

Gas Utility Operating Revenues |  |  |  |  |  |  |  |  |
(% of Total) |  | 2025 |  |  | 2024 |  |  | 2023 |
Residential |  |  | 66 | % |  |  | 66 | % |  |  | 67 | %
Commercial & Industrial |  |  | 23 | % |  |  | 24 | % |  |  | 25 | %
Transportation |  |  | 6 | % |  |  | 5 | % |  |  | 5 | %
Other |  |  | 5 | % |  |  | 5 | % |  |  | 3 | %
Total |  |  | 100 | % |  |  | 100 | % |  |  | 100 | %

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Gas Utility Volume Sold and Transported |  |  |  |  |  |  |  |  |
(In millions of CCF) |  | 2025 |  |  | 2024 |  |  | 2023 |
Residential |  |  | 948.8 |  |  |  | 890.8 |  |  |  | 965.3 |
Commercial & Industrial |  |  | 463.4 |  |  |  | 437.9 |  |  |  | 468.7 |
Transportation |  |  | 1,689.4 |  |  |  | 1,621.1 |  |  |  | 1,662.9 |
Interruptible |  |  | 12.3 |  |  |  | 10.6 |  |  |  | 10.9 |
Total System |  |  | 3,113.9 |  |  |  | 2,960.4 |  |  |  | 3,107.8 |
Off-System |  |  | 161.3 |  |  |  | 129.1 |  |  |  | 112.9 |
Total |  |  | 3,275.2 |  |  |  | 3,089.5 |  |  |  | 3,220.7 |

Gas Utility Customers |  | 2025 |  |  | 2024 |  |  | 2023 |
Residential |  |  | 1,630,625 |  |  |  | 1,627,111 |  |  |  | 1,621,822 |
Commercial & Industrial |  |  | 112,830 |  |  |  | 112,744 |  |  |  | 112,753 |
Transportation |  |  | 1,037 |  |  |  | 1,029 |  |  |  | 1,013 |
Interruptible |  |  | 45 |  |  |  | 44 |  |  |  | 45 |
Total |  |  | 1,744,537 |  |  |  | 1,740,928 |  |  |  | 1,735,633 |

Total annual average number of customers for Spire Missouri and Spire Alabama for fiscal 2025 was 1,213,375 and 429,628, respectively.

Spire Missouri is the only distributor of natural gas within its franchised service areas, while Spire Alabama is the main distributor of natural gas in its service areas. Spire Missouri and Spire Alabama have franchises in nearly all the communities where they provide service with terms varying from five years to an indefinite duration. A franchise is essentially a municipal permit to install and maintain pipes and construct other facilities in the community. All of the franchises are free from unduly burdensome restrictions and are adequate for the conduct of Spire Missouri’s and Spire Alabama’s current public utility businesses in their respective states. In recent years, although certain franchise agreements have expired, the Utilities have continued to provide service in those communities without formal franchises.

The principal competition for the Utilities comes from the local electric companies. Other competitors in the service areas include suppliers of fuel oil, coal, and propane, as well as natural gas pipelines that can directly connect to large volume customers. Coal has historically been cost-competitive for large boiler plant loads, but environmental regulations and decarbonization objectives have shifted the economic advantage to natural gas. Oil and propane can be used to fuel boiler loads and certain direct-fired process applications, but these fuels require on-site storage, thus limiting their competitiveness. Competition also comes from district steam systems in the downtown areas of both St. Louis and Kansas City and from municipally or publicly owned natural gas distributors located adjacent to the Alabama service territories. Direct use of renewables is expected to continue to grow in the future and compete against distributed generation using natural gas.

Residential, commercial, and industrial customers represent approximately 92% and 81% of fiscal 2025 operating revenues for Spire Missouri and Spire Alabama, respectively. Given the current level of natural gas supply and market conditions, the Utilities believe that the relative comparison of natural gas equipment and operating costs with those of competitive fuels will not change significantly in the foreseeable future, and that these markets will continue to be supplied by natural gas. In new multi-family and commercial rental markets, the Utilities’ competitive exposures are presently limited to space and water heating applications.

Spire Missouri and Spire Alabama provide gas transportation service to large commercial and industrial customers. In fiscal 2025, transportation customers represented approximately 2% of operating revenues for Spire Missouri and 16% for Spire Alabama. The Spire Missouri tariff for this service produces a margin comparable to what Spire Missouri would earn under its regular sales rates. Similarly, Spire Alabama’s tariff is based on its sales profit margin, ensuring operating margins remain unaffected.

Natural Gas Supply

The Utilities’ fundamental gas supply strategy is to meet the two-fold objective of 1) ensuring a dependable gas supply is available for delivery when needed and 2) insofar as is compatible with that dependability, purchasing gas that is economically priced. In structuring their natural gas supply portfolio, the Utilities focus on natural gas assets that are strategically positioned to meet the Utilities’ primary objectives.

Spire Missouri focuses its gas supply portfolio on a number of large natural gas suppliers with equity ownership or control of assets strategically situated to complement its regionally diverse firm transportation arrangements. Spire Missouri utilizes Midcontinent, Gulf Coast, Northeast, and Rocky Mountain gas sources to provide a level of supply diversity that

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facilitates the optimization of pricing differentials as well as protecting against the potential of regional supply disruptions. Further, Spire STL Pipeline may deliver up to 400,000 million British thermal units (MMBtu) per day of natural gas into eastern Missouri, of which Spire Missouri is the foundation shipper with a contractual commitment of 350,000 MMBtu per day.

In fiscal 2025, Spire Missouri purchased natural gas from 39 different suppliers to meet its total service area current gas sales and storage injection requirements. Spire Missouri entered into firm agreements with suppliers including major producers and marketers providing flexibility to meet the temperature-sensitive needs of its customers. Natural gas purchased by Spire Missouri for delivery to its service areas included 36.5 Bcf through the Enable Mississippi River Transmission LLC (MRT) system, 27.6 billion cubic feet (Bcf) through the Southern Star Central Gas Pipeline, Inc. (Southern Star) system, 22.2 Bcf through the Panhandle Eastern Pipe Line Company, LP (PEPL) system, 17.9 Bcf through the Spire STL Pipeline, 7.8 Bcf through the Tallgrass Interstate Gas Transmission, LLC (TIGT) system, 7.7 Bcf through the Spire Mogas Pipeline, and 1.5 Bcf through the Rockies Express Pipeline, LLC (REX) system. Spire Missouri also holds firm transportation arrangements on several other interstate pipeline systems that provide access to gas supplies upstream. Some of Spire Missouri’s commercial and industrial customers purchased their own gas with Spire Missouri transporting 52.69 Bcf to them through its distribution system.

The fiscal 2025 peak day send out of natural gas to Spire Missouri East customers, including transportation customers, occurred on January 21, 2025. The average temperature was 9 degrees Fahrenheit in St. Louis, and on that day Spire Missouri East customers consumed 0.95 Bcf of natural gas. This peak day demand was met with natural gas transported to St. Louis through the MRT, Spire MoGas Pipeline LLC, Spire STL Pipeline, and Southern Star transportation systems, and from Spire Missouri’s on-system storage.

The fiscal 2025 peak day send out of natural gas to Spire Missouri West customers, including transportation customers, occurred on February 18, 2025. The average temperature was 7 degrees Fahrenheit in Kansas City, and on that day Spire Missouri West customers consumed 0.84 Bcf of natural gas. This peak day demand was met with natural gas transported to Kansas City through the Southern Star, PEPL, TIGT, and REX transportation systems.

Spire Alabama’s distribution system is connected to two major interstate natural gas pipeline systems, Southern Natural Gas Company, L.L.C. ("SNG") and Transcontinental Gas Pipe Line Company, LLC ("Transco"). It is also connected to two intrastate natural gas pipeline systems.

Spire Alabama purchases natural gas from various natural gas producers and marketers. Certain volumes are purchased under firm contractual commitments with other volumes purchased on a spot market basis. The purchased volumes are delivered to Spire Alabama’s system using a variety of firm transportation, interruptible transportation and storage capacity arrangements designed to meet the system’s varying levels of demand.

In fiscal 2025, Spire Alabama purchased natural gas from 20 different suppliers to meet current gas sales, storage injection, and liquefied natural gas (LNG) liquefaction requirements, of which one supplier is under a long-term supply agreement. Approximately 55.3 Bcf was purchased for delivery by SNG, 8.9 Bcf by Transco, and 16.2 Bcf through intrastate pipelines to the Spire Alabama delivery points for its residential, commercial, and industrial customers.

The fiscal 2025 peak day send out for Spire Alabama was 0.6 Bcf of natural gas on January 21, 2025, when the average temperature was 20 degrees Fahrenheit in Birmingham, of which 75% was met with supplies transported through SNG, Transco, and intrastate facilities. The remaining 25% was fulfilled with LNG.

Spire Gulf’s distribution system is directly connected to interstate pipelines, natural gas processing plants and gas storage facilities. Spire Gulf buys from a variety of producers and marketers, with BP Energy Company being the primary supplier.

Natural Gas Storage

Spire Missouri believes it currently has ample storage capacity to meet the demands of its distribution system, particularly to augment its supply during peak demand periods. Spire Missouri has a contractual right to store 22.0 Bcf of gas in MRT’s storage facility located in Unionville, Louisiana, 16.3 Bcf of gas storage in Southern Star’s system storage facilities located in Kansas and Oklahoma, and 1.4 Bcf of firm storage on PEPL’s system storage. MRT’s tariffs allow injections into storage from May 1 through November 1 and require the withdrawal from storage of all but 4.4 Bcf from November 1 through May 1. Southern Star tariffs allow both injections and withdrawals into storage year-round with ratchets that restrict the associated flows dependent upon the underlying inventory level per the contracts.

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In addition, Spire Missouri supplements pipeline gas with natural gas withdrawn from its own underground storage field located in St. Louis and St. Charles Counties in Missouri. The field is designed to provide approximately 0.35 Bcf of natural gas withdrawals on a peak day and provides the ability to reinject natural gas during the heating season to replenish or increase deliverability, subject to maximum annual net withdrawals of approximately 4.0 Bcf of natural gas based on the inventory level that Spire Missouri plans to maintain.

Spire Alabama has a contractual right to store 12.7 Bcf of gas with SNG, 0.5 Bcf of gas with Gulf South Pipeline, 0.2 Bcf of gas with Transco and 0.2 Bcf of gas with Tennessee Gas Pipeline. In addition, Spire Alabama has 2.0 Bcf of on-system LNG storage that can provide the system with up to an additional 0.2 Bcf of natural gas daily to meet peak day demand.

Spire Gulf obtains adequate storage capacity through Gulf South Pipeline Company, LP, and Enstor Gas, LLC’s Bay Gas Storage.

Regulatory and Environmental Matters

For details on regulatory matters, see Note 15, Regulatory Matters, of the Notes to Financial Statements in Item 8.

The Utilities are subject to various environmental laws and regulations that, to date, have not materially affected the Utilities’ or the Company’s financial position and results of operations. For a detailed discussion of environmental matters, see Note 16, Commitment and Contingencies, of the Notes to Financial Statements in Item 8.

GAS MARKETING

Spire Marketing is engaged in the marketing of natural gas and related services throughout the U.S., which includes customers inside and outside of the Utilities’ service areas. For fiscal 2025 and 2024, Spire Marketing volumes averaged 1.22 Bcf/day and 1.32 Bcf/day, respectively. The majority of Spire Marketing’s business is derived from the procurement and physical delivery of natural gas to a diverse customer base, primarily in the central and southern U.S. Through its retail operations, Spire Marketing offers natural gas marketing services to large commercial and industrial customers, while its wholesale business consists of producers, pipelines, power generators, municipalities, storage operators, and utility companies. Wholesale activities currently represent a majority of the total Gas Marketing business. The Gas Marketing strategy is to leverage its market expertise and risk management skills to manage and optimize the value of its portfolio of commodity, transportation, park and loan, and storage contracts while controlling costs and acting on new marketplace opportunities.

In the course of its business, Spire Marketing enters into agreements to purchase natural gas at a future date in order to lock up supply to cover future sales commitments to its customers. To secure access to the markets it serves, Spire Marketing contracts for transportation capacity on various pipelines from pipeline companies directly and from other parties through the secondary capacity market. Throughout fiscal 2025, Spire Marketing held approximately 1 Bcf per day of firm transportation capacity. In addition, to ensure reliability of service and to provide operational flexibility, Spire Marketing enters into firm storage contracts and interruptible park and loan transactions with various companies, where it is able to buy and retain gas to be delivered at a future date, at which time it sells the natural gas to third parties. As of September 30, 2025, Spire Marketing has contracted for approximately 18 Bcf of such storage and park and loan capacity for the 2025-2026 winter season.

Spire Marketing utilizes its natural gas supply agreements, transportation agreements, park and loan agreements, storage agreements and other executory contracts to support a variety of services to its customers at competitive prices. It closely monitors and manages the natural gas commodity price and volatility risks associated with providing such services to its customers through the use of a variety of risk management activities, including the use of exchange-traded/cleared derivative instruments and other contractual arrangements. Spire Marketing is committed to managing commodity price risk while it seeks to expand the services that it now provides. Nevertheless, income from the Gas Marketing operations is subject to more fluctuations in market conditions than the Utilities’ operations.

The Gas Marketing business is directly impacted by the effects of competition in the marketplace, the impacts of new infrastructure, surplus natural gas supplies, and the addition of new demand from exports, power generation and industrial load. Spire Marketing’s management expects a growing need for marketing services across the country as customers manage seasonal variability and marketplace volatility.

MIDSTREAM

Spire’s midstream operations consist of Spire Storage West, Spire Storage Salt Plains (jointly, ‘Spire Storage’), Spire STL Pipeline, and Spire MoGas Pipeline, all at least partially under the jurisdiction of the Federal Energy Regulatory Commission (FERC). On October 8, 2025, FERC approved the merger of Spire STL Pipeline into Spire MoGas Pipeline, consolidating operations under a single certificate and tariff while maintaining existing rates and service continuity.

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Spire Storage West, located in southwestern Wyoming, consists of two storage fields operating under one FERC market-based rate tariff currently certificated to provide up to approximately 55 Bcf of natural gas storage working gas capacity to customers primarily in the western region of the U.S. The actual working gas capacity was approximately 23 Bcf as of September 30, 2025.

Spire Storage Salt Plains is located in north central Oklahoma and serves markets in the midcontinent and midwestern U.S. Spire Storage Salt Plains is connected to Southern Star Pipeline and Oklahoma Gas Transmission. The facility operates under intrastate regulation with authorizations from FERC under Section 311 of the Natural Gas Policy Act to provide certain interstate storage, transportation, and hub services. Salt Plains is authorized to provide up to 17 Bcf of natural gas storage working gas capacity. The actual working gas capacity was approximately 11 Bcf as of September 30, 2025.

Spire STL Pipeline owns and operates a FERC-regulated 65-mile pipeline connecting the Rockies Express Pipeline in Scott County, Illinois, to delivery points in St. Charles County and St. Louis County, Missouri, including Spire MoGas Pipeline and Spire Missouri’s storage facility, and its operating revenue is derived primarily from Spire Missouri as its foundation shipper.

Spire MoGas Pipeline (or simply “MoGas”) consists of a 263-mile FERC-regulated natural gas pipeline and a wholly owned subsidiary - a connected 75-mile gas distribution system. The MoGas pipeline, connected to the Rockies Express Pipeline, Panhandle Eastern Pipeline, Mississippi River Transmission and Spire STL Pipeline, serves natural gas utilities/municipals in western St. Louis and south-central Missouri. The distribution system serves the U.S. Army’s Fort Leonard Wood near Rolla, Missouri.

In its Midstream segment, Spire seeks to drive growth through supporting natural gas grid reliability, the ability to manage exposure to gas price volatility, and providing access to key supply basins for the shipment of natural gas. These transportation and storage operations serve a variety of natural gas customers, including Spire’s other businesses.

Absolute natural gas prices do not directly impact the results of this segment, but there is a relationship between natural gas prices and the revenues derived from the transportation and storage of natural gas. Natural gas price trends and demand for natural gas influence these price relationships through market volatility or changes in absolute prices of one supply/market point to another. Further, natural gas price differences between the various hubs Spire serves could influence the volumes of gas transported or stored on Spire’s system and the related transportation and storage rates.

Ite m 1A. Risk Factors

Spire’s, Spire Missouri’s and Spire Alabama’s businesses and financial results are subject to a number of risks and uncertainties, including those set forth below. The risks described below are those management considers to be material. When considering any investment in these companies’ securities, investors should carefully consider the following information, as well as information contained in the caption “Forward-Looking Statements,” Item 7A, and other documents Spire, Spire Missouri, and Spire Alabama file with the SEC. This list is not exhaustive, and management places no priority or likelihood based on the risk descriptions, order of presentation or grouping.

RISKS AND UNCERTAINTIES THAT RELATE TO REGULATORY, LEGISLATIVE AND LITIGATION FACTORS

Regulatory and legislative developments in the energy industry related to climate change or in support of increased energy efficiency may adversely affect operations and financial results.

There have been a number of federal, state and local legislative and regulatory initiatives proposed in recent years in an attempt to control or limit the effects of global warming and overall climate change, including greenhouse gas emissions, such as methane and carbon dioxide. Adoption of this type of legislation by Congress or similar legislation by states or localities, or the adoption of related regulations by federal, state or local governments mandating a substantial reduction in greenhouse gas emissions, restricting the use of fossil fuels, such as natural gas, or restricting the construction of infrastructure could have far-reaching and significant impacts on the energy industry. Such new legislation or regulations could result in increased compliance costs or additional operating restrictions, adversely affect the demand for natural gas and/or midstream services, or impact the prices charged to customers, potentially reducing customer growth opportunities and/or increasing the cost of doing business.

In addition, legislative and regulatory initiatives by the federal, state and local governments addressing greenhouse gas emissions or restricting the use of natural gas could adversely affect customer demand. The promulgation of regulations of the emissions of greenhouse gases and efficiency for residential gas furnaces and other gas appliances or the potential enactment of congressional legislation addressing global warming and climate change may decrease customer usage, encourage fuel switching from gas to other energy forms, and may result in future additional compliance costs that could

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impact the Utilities’ financial conditions and results of operations. At this time, we cannot predict the potential impact of such laws or regulations that may be adopted on the Company’s and the Utilities’ future business, financial condition or financial results.

In March 2024, the SEC adopted the final climate disclosure rules to enhance and standardize climate-related disclosures by public companies. These rules were immediately challenged in court and were voluntarily stayed by the SEC in April 2024. In March 2025, the SEC voted to end its defense of the rules, and in September 2025, the Eighth Circuit issued an order holding the case abeyance until the SEC decides to rescind, repeal, revise, or defend the rules. Accordingly, the rules remain stayed. If the rules, or similar rules, become effective in the future, compliance could require significant additional expenditures.

Regulation of the Utilities’ businesses may impact rates they are able to charge, costs, and profitability.

The Utilities are subject to regulation by federal, state and local authorities. At the state level, the Utilities are regulated in Missouri by the MoPSC, in Alabama by the APSC, and in Mississippi by the MSPSC. These state public service commissions regulate many aspects of the Utilities’ distribution operations, including construction and maintenance of facilities, operations, safety, the rates the Utilities may charge customers, the terms of service to their customers, transactions with their affiliates, the rate of return they are allowed to realize, and the accounting treatment for certain aspects of their operations. For further discussion of these accounting matters, see Regulatory Accounting under Critical Accounting Estimates in Item 7.

Accounting for the economics of rate regulation affects multiple financial statement line items (such as property, plant, and equipment; regulatory assets and liabilities; operating revenues; and operating expenses) and affects multiple disclosures in the Company’s financial statements. There is a risk that the state public service commissions will not approve full recovery of the costs of providing utility service or recovery of all amounts invested in the utility business and a reasonable return on that investment. A material disallowance of deferred costs could adversely affect the Utilities’ results of operations.

The MoPSC also approves Spire Missouri’s Infrastructure System Replacement Surcharge ("ISRS"). The ISRS allows Spire Missouri expedited recovery for its investment to upgrade its infrastructure and enhance its safety and reliability without the necessity of a formal rate case. Such investments are subject to review, and there is risk that any material disallowance of costs under ISRS could adversely affect the timing of revenues and cash flows. Without legislative action, the ISRS statute related to gas utilities will expire on August 28, 2029.

The Utilities’ ability to obtain and timely implement rate increases and rate supplements to maintain the current rate of return is subject to regulatory review and approval. There can be no assurance that they will be able to obtain rate increases or rate supplements or continue earning the current authorized rates of return. The Rate Stabilization and Equalization (RSE) mechanism, which requires Spire Alabama and Spire Gulf to file an annual rate review based on the utility’s budget for the upcoming fiscal year, was last renewed in 2022, and absent a Commission order modifying Spire Alabama’s tariff, the existing RSE terms shall continue in effect beyond September 30, 2025. Spire Mississippi is subject to regulation by the MSPSC and utilizes the Rate Stabilization Adjustment ("RSA") Rider. For further details, see Note 15, Regulatory Matters, of the Notes to Financial Statements in Item 8.

The Utilities could incur additional costs if required to adjust to new laws or regulations, revisions to existing laws or regulations or changes in interpretations of existing laws or regulations. In addition, as the regulatory environment for the natural gas industry increases in complexity, the risk of inadvertent noncompliance could also increase. If the Utilities fail to comply with applicable laws and regulations, whether existing or new, they could be subject to fines, penalties, business interruption or other enforcement action by the authorities that regulate the Utilities’ operations.

Federal safety and integrity regulations related to pipeline and storage operators and owners of critical infrastructure may impose significant costs and liabilities on the Company.

The U.S. Pipeline and Hazardous Materials Safety Administration ("PHMSA") requires pipeline and natural gas storage operators to develop integrity management programs to evaluate their pipelines comprehensively and to take additional measures to protect pipeline segments located in areas where a leak or rupture could potentially do the most harm. The Company is required to maintain programs that are intended to assess pipeline integrity. Any repair, remediation, preventative or mitigating actions may require significant capital and operating expenditures. PHMSA constantly updates its regulations to ensure the highest levels of pipeline safety. As the operator of pipelines, Spire is required to:

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perform ongoing assessments of pipeline integrity;
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identify and characterize applicable threats to pipelines;
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improve data collection, integration and analysis;
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repair and remediate the pipeline as necessary; and

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•
implement preventative and mitigating actions.

The PHMSA advisory bulletin to the Protecting Our Infrastructure of Pipelines and Enhancing Safety (PIPES) Act of 2020 was rescinded June 13, 2025. This would have, among other things, required the evaluation of steps taken to prevent and mitigate unintentional and intentional emissions from natural gas releases, e.g. increased the frequency of leak detection surveys, promoted advanced leak detection programs, and required accelerated repair of leaks found. Additionally, it would have required operators to have written O&M plans to address not only public safety, but also the protection of the environment. At this time, it is indeterminable if or when such regulation might go into effect. Nonetheless, the company will continue to implement Advanced Mobile Leak Detection in its service territories over the next three years.

The Transportation Security Administration ("TSA") requires owners and operators of specified pipeline facilities to take action to prevent disruption and degradation to their infrastructure to achieve the following security outcomes:

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develop network segmentation policies and controls;
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create access control measures to secure and prevent unauthorized access to critical cyber systems;
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build continuous monitoring and detection policies and procedures to detect threats and correct anomalies; and
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reduce the risk of exploitation of unpatched systems in a timely manner using a risk-based methodology.

As such, pipeline owners and operators are required to establish and execute a TSA-approved Cybersecurity Implementation Plan, develop and maintain a Cybersecurity Incident Response Plan, and establish a Cybersecurity Assessment Program. To date, Spire is compliant with these requirements.

Costs to comply with these and other such future safety and integrity regulations are significant. Additionally, should the Company fail to comply with applicable statutes, rules, regulations and orders, it could be subject to significant fines, penalties, business interruption or other enforcement actions.

Environmental laws and regulations may require significant expenditures or increase operating costs.

The Utilities and Midstream companies are subject to federal, state and local environmental laws and regulations affecting many aspects of their present and future operations. These laws and regulations require these businesses to obtain and comply with a wide variety of environmental licenses, permits, inspections, and approvals. Failure to comply with these laws and regulations and failure to obtain any required permits and licenses may result in costs in the form of fines, penalties, business interruptions or other enforcement actions, which may be material. In addition, existing environmental laws and regulations could be revised or reinterpreted and/or new laws and regulations could be adopted or become applicable to these companies or their facilities, thereby impacting the cost of compliance. With the overturning of the 40-year-old “Chevron Doctrine” on June 28, 2024, which had provided for deference to agencies’ interpretation of regulations in litigation against those agencies, there is additional uncertainty going forward regarding current and future regulatory interpretations. The discovery of presently unknown environmental conditions, including former manufactured gas plant sites, and adverse claims under environmental laws and regulations may result in expenditures and liabilities, which could be material. To the extent environmental compliance costs are self-insured, or not fully covered by insurance or recovered in rates from customers, those costs may have an adverse effect on financial condition and results of operations.

The Utilities’ liquidity may be adversely affected by delays in recovery of their costs, due to regulation.

In the normal course of business, there is a lag between when the Utilities incur increases in certain of their costs and the time in which those costs are considered for recovery in the ratemaking process. Cash requirements for increased gas supply costs, operating costs, increased funding levels of defined benefit pension and postretirement costs, capital expenditures, interest expense and other increases in the costs of doing business, including inflation, can require outlays of cash prior to the authorization of increases in rates charged to customers, as approved by the MoPSC, APSC, or MSPSC. Accordingly, the Utilities’ liquidity can be adversely impacted to the extent higher costs are not timely recovered from their customers.

Changes to income tax policy, certain tax elections, tax regulations and future taxable income could adversely impact the Company’s financial condition and results of operations.

The Company has significantly reduced its current federal and state income tax obligations over the past few years through tax planning strategies and application of tax rules, including the use of bonus depreciation deductions for certain property expenditures. As a result, the Company generated large annual taxable losses that have resulted in significant federal and state net operating losses ("NOLs"). The Company plans to utilize these NOLs in the future. The value of these NOLs could be reduced if the Company cannot generate sufficient taxable income to utilize all of the NOLs before they expire, or if changes in income tax policy, lower-than-expected financial performance, or regulatory actions occur.

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On July 4, 2025, U.S. tax legislation known as the One Big Beautiful Bill Act ("OBBBA") was enacted, which made permanent many provisions of the Tax Cuts and Jobs Act of 2017 and introduced additional changes to U.S. corporate tax rules, some of which become effective in 2026. While OBBBA is not expected to have a material impact to our financial condition or results of operations, future legislative changes, including potential modifications to OBBBA or other tax reforms, could adversely impact the Company. These impacts could include reducing the value of its NOLs and could result in material charges to earnings. Further, the Company’s financial condition and results of operations may be adversely impacted.

The Company may be involved in legal or administrative proceedings before various courts and governmental bodies that could adversely affect its results of operations and financial condition.

The Company may be involved in legal or administrative proceedings before various courts and governmental bodies with respect to general claims, rates, environmental issues, gas cost prudence reviews and other matters. For further details, see Contingencies in Note 16 to the financial statements in Item 8. Adverse decisions regarding these matters, to the extent they require the Company to make payments in excess of amounts provided for in its financial statements, or to the extent they are self-insured or not covered by insurance, could adversely affect the results of operations and financial condition.

Commodity markets and derivative instruments are regulated by federal agencies, and new developments in this area may adversely impact Spire Marketing’s results of operations and financial condition.

As a participant in the natural gas market, Spire Marketing is subject to applicable statutes, rules, regulations and orders administered by FERC and the Commodity Futures Trading Commission ("CFTC"), including those directed generally to prevent fraud or manipulation involving natural gas transactions (physical or financial transactions). Spire Marketing could be subject to fines, penalties, business interruption or other enforcement actions by the FERC or CFTC, or both, for failure to comply with such rules. New regulatory and legislative actions may adversely impact Spire Marketing’s results of operations and financial condition by potentially reducing customer growth opportunities and/or increasing the costs of doing business.

Spire Marketing uses bilateral contracts and derivative instruments such as futures contracts, options and swaps to hedge or mitigate ongoing commercial risks. Most standardized swaps, under the Dodd-Frank Act and regulations from the CFTC, are required to be cleared through a registered clearing facility and traded on a designated exchange or swap execution facility, subject to certain exceptions. These regulations may also require compliance with certain margin requirements for over-the-counter derivative contracts with certain regulated entities, which could adversely affect liquidity and ability to use derivatives to hedge risks. In addition, the CFTC’s rules require companies, including Spire Marketing, to maintain regulatory records of swap transactions, and to report swaps to centralized swap data repositories, among other compliance obligations.

Although Spire Marketing may qualify for exceptions to certain of these CFTC rules, its derivatives counterparties are likely subject to capital, margin, documentation and business conduct requirements imposed as a result of the Dodd-Frank Act. These obligations may increase transaction costs and may make it more difficult for Spire Marketing to enter into hedging transactions on favorable terms or affect the number and/or creditworthiness of available swap counterparties. In that event, Spire Marketing’s inability to enter into derivatives instruments or other commercial risk hedging transactions on favorable terms, or at all, could increase operating expenses and expose it to unhedged commercial risks, including potential adverse changes in commodity prices.

RISKS THAT RELATE TO OPERATIONAL FACTORS

The Company’s ability to meet its customers’ natural gas requirements may be impaired if contracted gas supplies, interstate pipeline and/or storage services are not available or delivered in a timely manner.

In order to meet their customers’ annual and seasonal natural gas demands, the Utilities must obtain sufficient supplies, interstate pipeline capacity, and storage capacity. If they are unable to obtain these, either from their suppliers’ inability to deliver the contracted commodity or the inability to secure replacement quantities, to the extent not mitigated by tariffs, contractual indemnification or insurance, the Utilities’ financial condition and results of operations may be adversely impacted. If a substantial disruption in interstate natural gas pipelines’ transmission and storage capacity were to occur during periods of heavy demand, the Utilities’ financial results could be adversely impacted.

Spire Marketing’s ability to deliver natural gas to its customers is contingent upon the performance of its suppliers and capability of pipeline and storage operators to fulfill delivery obligations to Spire Marketing under firm contracts. To the extent that it is unable to obtain the necessary supplies, Spire Marketing’s financial position and results of operations may be adversely impacted.

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Midstream is dependent upon third-party pipelines and other facilities to provide delivery options to and from its facilities. If any pipeline connection were to become unavailable for volumes of natural gas due to repairs, damage to the facility, lack of capacity or any other reason, the ability to continue receiving or delivering natural gas could be restricted, and to the extent not mitigated by contractual indemnification, insurance or tariffs, would thereby reduce its revenues. Any permanent interruption that causes a material reduction in volumes could result in an impairment loss that could have a material adverse effect on the financial condition and results of operations.

Transporting, distributing, and storing natural gas and propane involves numerous risks that may result in accidents and other operational issues.

Natural gas transportation, distribution and storage activities inherently involve a variety of integrity issues, hazards and operations risks, such as leaks, accidental explosions, blowouts, damage caused by third parties, activities of contractors, and mechanical problems, which could cause substantial financial losses. In addition, these risks could result in serious injury to employees and non-employees, loss of human life, significant damage to property, environmental pollution, impairment of operations, and substantial losses to the Company and its subsidiaries. The location of pipelines and storage facilities near populated areas, including residential areas, commercial business centers, and industrial sites, could increase the level of damages resulting from these risks. Similar risks also exist for Spire Missouri’s propane storage, transmission and minor distribution operations. These activities may subject the Company to litigation or administrative proceedings. Such litigation or proceedings could result in substantial monetary judgments, fines, penalties, business interruption or other enforcement actions against the Company and its subsidiaries or be resolved on unfavorable terms. In accordance with customary industry practices, the Utilities and other Spire businesses maintain insurance against a significant portion, but not all, of these risks and losses. To the extent the occurrence of any of these events is self-insured or not fully covered by insurance, it could adversely affect the financial condition and results of operations of the Company and its subsidiaries.

Because of competition, the Company may not be able to retain existing customers or acquire new customers, or may be unsuccessful in retaining or acquiring contractual assets on favorable terms, which could have an adverse impact on its business, results of operations and financial condition.

The Utilities face the risk that larger commercial or industrial customers may bypass gas distribution services by directly connecting with interstate pipelines or, in the case of Spire Alabama and Spire Gulf, also from municipally or publicly owned gas distributors located adjacent to its service territory. The Utilities cannot provide any assurance that increased competition will not have a material adverse effect on their business, financial condition or results of operations.

The Utilities compete with distributors offering a broad range of services and prices, from full-service distributors to those offering delivery only. The Utilities also compete for retail customers with suppliers of alternative energy products, principally propane and electricity, and to a growing extent, distributed sources of renewable energy. If they are unable to compete effectively, the Utilities may lose existing customers and/or fail to acquire new customers, which in the aggregate could have a material adverse effect on their business, results of operations and financial condition. Along those lines, changes in wholesale natural gas prices compared with prices for electricity, fuel oil, coal, propane, or other energy sources can significantly impact the cost of delivered natural gas, which may affect the Utilities’ retention of natural gas customers and may adversely impact their financial condition and results of operations.

Spire Storage is subject to competition from similar services provided by pipelines and from competing independent storage providers capable of serving its customers. Natural gas storage is a competitive business, with competitors having the ability to expand storage capacity. Increased competition in the natural gas storage business could reduce the demand and drive rates down for the Company’s natural gas storage services. To a lesser extent, competition and the price differences between natural gas hubs can also impact the volumes and rates of our interstate pipelines.

Also, Spire Marketing profitability may be impacted by the effects of the expiration, in the normal course of business, of certain of its natural gas supply, sales, transportation and storage contracts if, because of competition or other reasons, those contracts cannot be replaced and/or renewed with arrangements with similar terms and pricing.

Significantly warmer-than-normal weather conditions and the effects of climate change may affect the Utilities’ sale of heating energy and adversely impact their financial position and results of operations.

The Utilities’ earnings are primarily generated by the sale of heating energy. Spire Missouri and Spire Mississippi each have a Weather Normalization Adjustment rider, Spire Alabama has a Temperature Adjustment Rider, and Spire Gulf has a Weather Impact Normalization Factor. These mechanisms, approved by the respective state regulatory body, provide better assurance of the recovery of fixed costs and margins during winter months despite variations in sales volumes due to the impacts of weather, while the annual rate designs of Alabama and Mississippi help adjust for other factors that affect customer usage. However, significantly warmer-than-normal weather conditions in the Utilities’ service areas and

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other factors, such as climate change, alternative energy sources and increased efficiency of gas furnaces and other appliances, may result in reduced profitability and decreased cash flows attributable to lower gas sales. Furthermore, these mechanisms do not fully mitigate the impact of warmer weather and continuation of these adjustment factors is subject to regulatory discretion.

To the extent climate change results in warmer temperatures, financial results could be adversely affected through lower gas volumes and revenues and reduced marketing opportunities. Management believes it is likely that any such resulting impacts would occur over a long period of time and thus would be difficult to quantify with any degree of specificity. Another possible impact of climate change may be more frequent and more severe weather events, such as significant wind or flooding events, which could increase costs to repair damaged facilities and restore service to customers or result in lost revenues if the Company were unable to deliver natural gas to customers. Such weather events could also disrupt our usual gas supplies and make it impossible or extremely costly to find replacement gas for our customers. To the extent such impacts are self-insured, or not covered by insurance or recovered in rates, the foregoing events could have a material adverse effect on the Company’s financial condition and results of operations.

The Company’s natural gas storage business includes inherent geologic and operational risks.

Any damage to the Spire Storage facilities or pipelines, or lack of integrity to its storage fields, including damages caused by a blow-out, to the extent such impacts are self-insured or not covered by insurance, could have a material adverse effect on the Company’s financial condition and results of operations.

The Company does not own all the land on which its storage facilities were constructed, and it is, therefore, subject to the possibility of more onerous terms or increased costs to retain necessary land use, if and when applicable property rights expire or are renewed. Changes in the terms of such land use could have an adverse impact on the financial condition and results of operations of the Company’s storage business.

Increased dependence on technology may hinder the Company’s business operations and adversely affect their financial condition and results of operations if such technologies fail.

The Company has implemented or acquired a variety of technological tools including both Company-owned information technology and technological services provided by outside parties. These tools and systems support critical functions including the Company’s integrated planning, scheduling and dispatching of field resources, its automated meter reading system, customer care and billing, procurement and accounts payable, operational plant logistics, management reporting, and external financial reporting. The failure of these or other similarly important technologies, or the Company’s inability to have these technologies supported, updated, expanded, or integrated into other technologies, could hinder its business operations and, to the extent such impacts are self-insured or not covered by insurance, could adversely impact its financial condition and results of operations.

Although the Company has, when possible, developed alternative sources of technology and built redundancy into its computer networks and tools, there can be no assurance these efforts to date would protect against all potential issues related to the loss of any such technologies or the Company’s use of such technologies. While the Company assesses the cyber protection of its vendors, the Company’s use of an outside party presents cyber exposure that must also be carefully managed.

A cyberattack may disrupt the Company’s operations or lead to a loss or misuse of confidential and proprietary information or potential liability.

The Company is subject to cybersecurity risks primarily related to breaches of security pertaining to sensitive customer, employee, and vendor information maintained by the Company, its subsidiaries, or its third-party vendors in the normal course of business, as well as breaches in the technology that manages natural gas supply and control operations and other business processes. A loss of confidential or proprietary data or security breaches of technology for operations or business processes could adversely affect the Company’s reputation, diminish customer confidence, disrupt operations, and subject the Company to possible financial liability, any of which could have a material effect on its financial condition and results of operations. Despite Company policy restrictions on artificial intelligence ("AI"), whitelisting of sites, and contractual limitations on vendors’ use of AI, there is also a risk of inadvertent sharing of confidential or proprietary data through the inappropriate use of open AI tools.

The Company acknowledges increased dependence on technology increases its exposure to cyberattack. The Company closely monitors both preventive and detective measures to manage these risks and maintain cyber risk insurance to mitigate a significant portion, but not all, of these risks and losses. To the extent that the occurrence of any of these cyber events is self-insured or not covered by insurance, it could adversely affect the Company’s financial condition and results of operations. In the event of a material cyber event, the Company is required to inform investors and to publicly disclose the nature of such an event to comply with SEC rules and regulations.

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The Company’s business activities are concentrated in a few states and regions.

The Utilities provide natural gas distribution services to customers in Alabama, Mississippi, and Missouri. On July 27, 2025 the Company entered into an agreement to purchase the Tennessee natural gas local distribution company business of Piedmont Natural Gas Company, Inc. ("Piedmont Natural Gas") from Duke Energy Corporation ("Duke Energy"). Midstream is focused on the Rocky Mountain/Western and Midcontinent regions. Changes in the regional economies, politics, regulations and weather patterns of these states could negatively impact growth opportunities and the usage patterns and financial condition of customers and could adversely affect earnings, cash flows, and financial position.

RISKS THAT RELATE TO FINANCIAL, ECONOMIC AND MARKET FACTORS

As a holding company, Spire depends on its operating subsidiaries to meet its financial obligations.

Spire is a holding company with no significant assets other than the stock of its operating subsidiaries and cash investments. Spire, and Spire Missouri prior to the holding company’s formation in 2000, has paid common stock dividends continuously since 1946. Spire’s ability to pay dividends to its shareholders is dependent on the ability of its subsidiaries to generate sufficient net income and cash flows to pay upstream dividends and make loans or loan repayments.

A downgrade in Spire’s and/or its subsidiaries’ credit ratings and/or reduced access to credit and capital markets may negatively affect its cost of capital or prevent it from executing operating strategies.

Currently, Spire, Spire Missouri, and Spire Alabama have investment-grade credit ratings. There is no assurance such credit ratings for any of these companies will remain in effect for any given period or such ratings will not be lowered, suspended or withdrawn entirely by the rating agencies, if, in each rating agency’s judgment, circumstances so warrant. Spire has a working capital line of credit to meet its short-term liquidity needs. Spire’s line of credit may be used to meet the liquidity needs of any of its subsidiaries, subject to sublimits. If the rating agencies lowered the credit rating at any of these entities, particularly below investment grade, it might significantly limit that entity’s ability to secure new or additional credit facilities and would increase its costs of borrowing. Spire’s and the Utilities’ ability to borrow under current or new credit facilities and costs of that borrowing have a direct impact on their ability to execute their operating strategies.

Spire Marketing relies on its cash flows, ability to effect net settlements with counterparties, parental guaranties, and access to Spire’s liquidity resources to satisfy its credit and working capital requirements. Spire Marketing’s ability to rely on parental guaranties is dependent upon Spire’s financial condition and credit ratings. If Spire’s credit ratings were lowered, particularly below investment grade, counterparty acceptance of parental guaranties may diminish, resulting in decreased availability of credit. Additionally, under such circumstances, certain counterparties may require Spire Marketing to provide prepayments or cash deposits, amounts of which would be dependent upon natural gas market conditions. Reduced access to credit or increased credit requirements, which may also be caused by factors such as higher overall natural gas prices, may limit Spire Marketing’s ability to enter into certain transactions. In addition, Spire Marketing has concentrations of counterparty credit risk in that a significant portion of its transactions are with (or are associated with) utility companies and their marketing affiliates. The concentration of counterparties has the potential to affect the Company’s overall exposure to credit risk, either positively or negatively, in that customers in this group may be affected similarly by changes in economic, industry, or other conditions. Spire Marketing also has concentrations of credit risk in certain individually significant counterparties. Spire Marketing closely monitors its credit exposure and, although uncollectible amounts have not been significant, increased counterparty defaults are possible and may result in financial losses and/or capital limitations.

Regional supply/demand imbalances, fluctuations in natural gas commodity prices, changes in the terms and rates charged by midstream facilities, and infrastructure projects may adversely impact the future profitability of the Company.

Competition in the marketplace and fluctuations in natural gas commodity prices have a direct impact on Spire Marketing. Changing market conditions and prices, the narrowing of regional and seasonal price differentials and limited future price volatility may adversely impact its sales margins or affect its ability to procure gas supplies and/or to serve certain customers, which may reduce sales profitability and/or increase certain credit requirements caused by reductions in netting capability. Although the FERC regulates the interstate transportation of natural gas and establishes the general terms and conditions under which Spire Marketing may use interstate gas pipeline capacity to purchase and transport natural gas, Spire Marketing must occasionally renegotiate its transportation agreements with a concentrated group of pipeline companies. Renegotiated terms of new agreements or increases in FERC-authorized rates of existing agreements may impact Spire Marketing’s future profitability. Profitability may also be adversely impacted if pipeline capacity or future storage capacity secured is not fully utilized.

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Storage businesses are affected by various gas market fundamentals which impact the level of demand for storage services and the rates that can be charged for these services. These market fundamentals include: seasonal price spread; monthly, daily and hourly price volatility; locational basis for pricing points on pipelines connected to a storage facility; seasonal, daily and hourly weather; and operational impacts in supply and market areas served by a storage facility and its connected pipelines. These fundamentals have varying and potentially material adverse impacts on the various services offered by storage facilities and the rates that can be charged for these services in the market. These services include long-term firm storage, short-term park and loan, wheeling, and optimization. Rates below the variable costs to operate a storage facility could result in a decision to not operate all the capacity in the facility or to operate the facility at a loss if required to fulfill firm customer contract obligations. A sustained decline in these rates or a shut-in of all or a portion of one or more facilities’ capacity could have an adverse impact on the Company’s financial condition and results of operations.

Spire Missouri’s and Spire Alabama’s income from off-system sales and capacity release is subject to fluctuations in market conditions and changing supply and demand conditions in areas the Utilities hold pipeline capacity rights. Specific factors impacting the Utilities’ income from off-system sales and capacity release include the availability of attractively priced natural gas supply, availability of pipeline capacity, and market demand. Income from off-system sales and capacity release is shared with customers. Spire Missouri and Spire Alabama are allowed to retain 25% of the net margins achieved as a result of such off-system sales and capacity release. The Utilities’ ability to retain such income in the future is also subject to regulatory discretion.

Rapid significant increases in natural gas prices may adversely affect the Utilities’ liquidity and, in certain circumstances, results of operations.

The tariff rate schedules of Spire Missouri, Spire Gulf and Spire Mississippi contain PGA clauses and Spire Alabama’s tariff rate schedule contains a GSA rider that permit the Utilities to file for rate adjustments to recover the cost of purchased gas. Changes in the cost of purchased gas are flowed through to customers and may affect uncollectible amounts and cash flows and can therefore impact the amount of capital resources.

Currently, Spire Missouri is allowed to adjust the gas cost component of rates up to four times each year while Spire Alabama and Spire Gulf (collectively, the “Alabama Utilities”) and Spire Mississippi may adjust the gas cost component of their rates on a monthly basis. Spire Missouri must make a mandatory gas cost adjustment at the beginning of the winter, in November, and during the next twelve months may make up to three additional discretionary gas cost adjustments, so long as each of these adjustments is separated by at least two months.

The MoPSC typically approves the Spire Missouri PGA changes on an interim basis, subject to refund and the outcome of a subsequent audit and prudence review. Due to such review process, there is a risk of a disallowance of full recovery of these costs. Any material disallowance of purchased gas costs would adversely affect results of operations. The Alabama Utilities’ gas supply charges are submitted for APSC review monthly, regardless of whether there is a request for a change, so prudence review occurs on an ongoing basis. Spire Mississippi’s PGA is adjusted monthly for the most recent charges and is filed at the MSPSC monthly.

Increases in the prices the Utilities charge for gas may also adversely affect revenues because they could lead customers to reduce usage and cause some customers to have trouble paying the resulting higher bills. These higher prices may increase bad debt expenses and ultimately reduce earnings. Rapid increases in the price of purchased gas may result in an increase in short-term debt.

To lower financial exposure to commodity price fluctuations, Spire Missouri enters into contracts to hedge the forward commodity price of its natural gas supplies. As part of this strategy, Spire Missouri may use fixed-price forward physical purchase contracts, swaps, futures, and option contracts. However, Spire Missouri does not hedge the entire exposure of energy assets or positions to market price volatility, and the coverage will vary over time. Any costs, gains, or losses experienced through hedging procedures, including carrying costs, generally flow through the PGA clause, thereby limiting Spire Missouri’s exposure to earnings volatility. However, variations in the timing of collections of such gas costs under the PGA clause and the effect of cash payments for margin deposits associated with Spire Missouri’s use of natural gas derivative instruments may cause short-term cash requirements to vary. These procedures remain subject to prudence review by the MoPSC.

Other than fixed-price forward physical purchase contracts, Spire Alabama, Spire Gulf, and Spire Mississippi currently do not utilize risk mitigation strategies that incorporate commodity hedge instruments, but Spire Alabama has the ability to do so through its GSA.

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Risk management policies, including the use of derivative instruments, may not fully protect Spire Marketing’s sales and results of operations from volatility and may result in financial losses.

In the course of its business, Spire Marketing enters into contracts to purchase and sell natural gas at fixed prices and index-based prices. Commodity price risk associated with these contracts has the potential to impact earnings and cash flows. To minimize this risk, Spire Marketing has a risk management policy that provides for daily monitoring of a number of business measures, including fixed price commitments.

Spire Marketing currently manages the commodity price risk associated with fixed-price commitments for the purchase or sale of natural gas by either closely matching the offsetting physical purchase or sale of natural gas at fixed prices or through the use of natural gas futures, options, and swap contracts traded on or cleared through the New York Mercantile Exchange, Inc. and/or the Intercontinental Exchange to lock in margins. These exchange-traded/cleared contracts may be designated as cash flow hedges of forecasted transactions. However, market conditions and regional price changes may cause ineffective portions of matched positions to result in financial losses. Additionally, to the extent that Spire Marketing’s natural gas contracts are classified as trading activities or do not otherwise qualify for the normal purchases or normal sales designation (or the designation is not elected), the contracts are recorded as derivatives at fair value each period. Accordingly, the associated gains and losses are reported directly in earnings and may cause volatility in results of operations. Gains or losses (realized and unrealized) on certain wholesale purchase and sale contracts, consisting of those classified as trading activities, are required to be presented on a net basis (instead of a gross basis) in the statements of consolidated income. Such presentation could result in volatility in the Company’s operating revenues.

Spire’s pension and other postretirement benefit plans are subject to investment and interest rate risk that could negatively impact its financial condition.

Spire and its subsidiaries have pensions and other postretirement benefit plans that provide benefits to many of their employees and retirees. Costs of providing benefits and related funding requirements of these plans are subject to changes in the market value of the assets that fund the plans. The funded status of the plans and the related costs reflected in the Company’s financial statements are affected by various factors, which are subject to an inherent degree of uncertainty, including economic conditions, financial market performance, interest rates, life expectancies and demographics. Recessions and volatility in the domestic and international financial markets have negatively affected the asset values of the Company’s pension plans at various times in the past. Poor investment returns or lower interest rates may necessitate accelerated funding of the plans to meet minimum federal government requirements, which could have an adverse impact on the Company’s financial condition and results of operations. For more information, including regulatory provisions affecting the Utilities’ plans, see Note 13, Pension Plans and Other Postretirement Benefits, of the Notes to Financial Statements in Item 8.

In connection with acquisitions, Spire and Spire Missouri recorded goodwill and long-lived assets that could become impaired and adversely affect its financial condition and results of operations.

Spire and Spire Missouri assess goodwill for impairment annually or more frequently if events or circumstances occur that would more likely than not reduce the fair value of a reporting unit below its carrying value. The Company and Spire Missouri assess their long-lived assets for impairment whenever events or circumstances indicate an asset’s carrying amount may not be recoverable. To the extent the value of goodwill or long-lived assets becomes impaired, the Company and Spire Missouri may be required to incur impairment charges that could have a material impact on their results of operations.

Since interest rates are a key component, among other assumptions, in the models used to estimate the fair values of the Company’s reporting units, rises in interest rates would generally decrease the calculated fair values and future impairments may occur. Due to the subjectivity of the assumptions and estimates underlying the impairment analysis, Spire and Spire Missouri cannot provide assurance that future analyses will not result in impairment. These assumptions and estimates include projected cash flows, current and future rates for contracted capacity, growth rates, weighted average cost of capital and market multiples.

GENERAL RISK FACTORS

Resources expended to pursue or integrate business acquisitions, investments, or other business arrangements may adversely affect Spire’s financial position and results of operations, and the return on such investments may not meet the Company’s expectations.

From time to time, Spire may seek to grow through strategic acquisitions, investments, or other business arrangements. Attractive opportunities may be difficult to complete on economically acceptable terms. Spire may expend considerable resources pursuing acquisitions or investments that, for various reasons, do not move forward. Similarly, investment opportunities may be hindered or halted by regulatory or legal actions. When acquisitions or investments are completed,

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these transactions involve a number of risks, including, but not limited to, the assumption of material liabilities, the diversion of management’s attention from daily operations, difficulties in assimilating and retaining employees, challenges in integrating information technology systems, securing adequate capital to support the transaction, the potential impact on credit ratings, and obtaining necessary regulatory approvals. Uncertainties also exist in assessing the value, risks, profitability, and liabilities associated with certain businesses or assets. There is a possibility that anticipated operating and financial efficiencies expected from an acquisition or investment may not materialize. Additionally, there are no assurances that resources expended will achieve their intended results. Failure to successfully complete or integrate an acquisition or investment could adversely affect Spire’s financial condition, results of operations, and the market’s perception of the Company’s ability to execute its strategy. Subsidiaries, including the Utilities, may face similar risks when engaging in these activities.

On July 27, 2025, the Company entered into an agreement to acquire Piedmont Natural Gas local distribution company business in Tennessee from Duke Energy for approximately $2.48 billion, subject to regulatory approvals and customary closing conditions. This transaction involves risks, including the possibility that required approvals may not be obtained or may be delayed, that the transaction may not close on the anticipated timeline or at all, that integration may be more difficult or costly than expected, and that anticipated benefits may not be realized. We may also assume unexpected liabilities and incur significant transaction costs, and the transaction could divert management attention or disrupt ongoing operations.

Unexpected losses may adversely affect Spire’s or its subsidiaries’ financial condition and results of operations.

As with most businesses, there are operations and business risks inherent in the activities of Spire’s subsidiaries or even the activities of its vendors. If, in the normal course of business, Spire or any of its subsidiaries becomes a party to litigation, such litigation could result in substantial monetary judgments, fines, penalties, business interruption or other enforcement actions or be resolved on unfavorable terms. In accordance with customary practice, Spire and its subsidiaries secure strong contractual indemnification requirements where available and maintain insurance against a significant portion of, but not all, risks and losses, though it does reinsure a portion of the risk from certain of Spire’s insurers through its captive insurance company. Spire and its operating companies employ many strategies to gain assurance such risks are appropriately managed, mitigated, or insured, as appropriate. To the extent a loss is self-insured or not fully covered by insurance or other risk mitigation strategies, that loss could adversely affect Spire’s and/or its subsidiaries’ financial condition and results of operations.

Catastrophic events may adversely affect the Company’s facilities and operations.

Catastrophic events such as fires, earthquakes, explosions, floods, tornadoes, hurricanes, tropical storms, winter storms, terrorist acts, acts of civil unrest, pandemic illnesses or other similar occurrences could adversely affect the Utilities’ facilities and operations, as well as those of Midstream. Emergency planning and training programs are in place to respond to events that could cause business interruptions; however, unanticipated events or a combination of events, failure in resources needed to respond to events, or slow or inadequate response to events may have an adverse impact. To the extent the impacts of such catastrophic events are not covered by insurance or recovered in rates, this could have a material adverse effect on the Company's financial condition and results of operations.

Workforce risks may affect the Company’s financial results.

The Company and its subsidiaries are subject to various workforce risks, including, but not limited to, the risk that it will be unable to attract and retain qualified personnel; that it will be unable to effectively transfer to new personnel the knowledge and expertise of an aging workforce as those workers retire; and that it will be unable to reach collective bargaining arrangements with the unions that represent certain of its workers, which could result in work stoppages.

The Company may be adversely affected by economic conditions.

Periods of slowed economic activity generally result in decreased energy consumption, particularly by industrial and large commercial companies, a loss of existing customers, and fewer new customers. As a consequence, national or regional recessions or other downturns in economic activity could adversely affect revenues and cash flows or restrict future growth. Economic conditions in the Utilities’ service territories may also adversely impact the Utilities’ ability to collect accounts receivable, resulting in an increase in bad debt expense.

Changes in accounting standards may adversely impact the Company’s financial condition and results of operations.

Spire and its subsidiaries are subject to changes in U.S. generally accepted accounting principles (“GAAP”), SEC regulations, and other interpretations of financial reporting requirements for public utilities. The Company and its

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subsidiaries have no control over the timing or impact of these changes on their financial condition or results of operations. Potential issues related to rate-regulated accounting, along with other changes under consideration, could be significant.

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Ite m 1B. Unresolved Staff Comments

None.

Ite m 1C. Cybersecurity

Managing risk related to cybersecurity is a top priority for Spire, and the Company remains focused on addressing threats that would jeopardize the confidentiality, integrity and availability of stakeholders’ information or the ability to continue providing safe and reliable service to customers. To date, Spire has not experienced any material cybersecurity breach that impacts the Company’s business strategy, results of operations, or financial condition.

Risk Management

Enterprise risk management ("ERM") at Spire oversees significant risks to the Company’s ability to successfully execute on strategy and achieve corporate objectives. Spire’s ERM is based on a structured, comprehensive process that leverages ISO 31000:2018, adopted and customized to the Company’s needs, utilizing an ongoing process of risk identification, evaluation, treatment, integration and monitoring. ERM helps assess priorities and facilitate decision-making for resource allocation as it relates to risk management. Two risks prioritized by our Enterprise Risk Oversight Committee related to cybersecurity are cyber threats and vendor management. Additionally, the ERM process is structured to integrate with operational levels, where risk is managed, such as the National Institute of Standards and Technology ("NIST") Cybersecurity Framework 2.0 utilized by the Company’s Information Security function for managing cybersecurity.

Governance

Spire’s Board of Directors (“Board”) recognizes the significance of cybersecurity risk and has therefore retained oversight of cybersecurity rather than delegating this risk to a committee of the Board. Every regular meeting of the Board includes a cybersecurity report provided by the Company’s Chief Information Officer and the Chief Information Security Officer. These reports focus on developments within the Company’s cybersecurity program and provide an update on any cybersecurity events or concerns. In 2024, the Board added a new director with expertise in cybersecurity to assist the Board to appropriately oversee the Company’s efforts.

Spire’s cybersecurity program is led by the Chief Information Officer and the Chief Information Security Officer, who together have over 40 years of experience in information technology and cybersecurity, along with a cross-functional team of technology, legal, physical security and risk leaders. Internal Audit provides assurances of risk management activities, including certain third-party cybersecurity activities, such as penetration testing.

Strategy/Approach

Spire’s cybersecurity team developed a five-year strategic roadmap in 2020, which is reviewed and updated annually. A NIST-based maturity assessment is also conducted annually to assess Spire’s current maturity level and is used to establish initiatives to drive capabilities in key focus areas. Such initiatives were updated to align with federal security directives issued in 2021, with a key focus on increasing overall visibility into the environment to better correlate potential security related items; completing segregation and dependency from the enterprise and industrial control systems environments; and establishing defined policies and procedures to enhance overall governance and risk management.

In addition to these strategic efforts, the Company works closely with federal agencies, including the U.S Department of Homeland Security, TSA and the local FBI chapter, and is actively involved in industry information sharing groups.

The Company’s cybersecurity function is staffed with dedicated professionals who continuously monitor risks and evaluate the resiliency and effectiveness of the architecture and defenses within Spire’s systems. The Company also maintains policies, procedures and standards to manage conduct within Spire and to be prepared for new cybersecurity threats and events. The cybersecurity program involves a variety of training and education to increase awareness of cybersecurity threats through mandatory annual security awareness training for all employees, quarterly phishing campaigns, and table-top exercises. The Company also engages third parties to evaluate potential risks through external penetration testing to assess the efficacy of systems.

Spire maintains business continuity plans to guide the Company’s response to a potential cybersecurity event. These plans are regularly reviewed, tested and updated to ensure they meet the evolving needs of the Company in this area. The Company also conducts annual disaster recovery exercises to test the efficacy of core systems in the event of a catastrophic incident.

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Ite m 2. Properties

Spire

Refer to the information below about the principal properties of Spire Missouri and Spire Alabama. The Spire EnergySouth utilities own more than 5,500 miles of pipelines. Other properties of Spire and its subsidiaries do not constitute a significant portion of its properties. For information on leases, see Note 17, Leases, of the Notes to Financial Statements in Item 8.

Spire Missouri

The principal properties of Spire Missouri consist of its gas distribution system, which includes more than 32,000 miles of main and related service lines, odorization and regulation facilities, and customer meters. The mains and service lines are located in municipal streets or alleys, public streets or highways, or on lands of others for which Spire Missouri has obtained the necessary legal rights to place and operate its facilities on such property. Spire Missouri has an underground natural gas storage facility, several operating centers, and other related properties. Substantially all of Spire Missouri’s utility plant is subject to the liens of its mortgage. All the properties of Spire Missouri are held in fee, by easement, or under lease agreements.

Spire Alabama

The properties of Spire Alabama consist primarily of its gas distribution system, which includes more than 24,000 miles of main and related service lines, odorization and regulation facilities, and customer meters. The mains and service lines are located in municipal streets or alleys, public streets or highways, or on lands of others for which Spire Alabama has obtained the necessary legal rights to place and operate its facilities on such property. Spire Alabama also has four LNG facilities, several operating centers, and other related properties. All the properties of Spire Alabama are held in fee, by easement, or under lease agreements.

Ite m 3. Legal Proceedings

For a description of pending regulatory matters of Spire, see Note 15, Regulatory Matters, of the Notes to Financial Statements in Item 8. For a description of environmental and other legal matters, see Contingencies in Note 16 of the Notes to Financial Statements in Item 8.

Ite m 4. Mine Safety Disclosures

Not applicable.

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INFOR MATION ABOUT OUR EXECUTIVE OFFICERS – Listed below are executive officers as defined by the SEC for Spire as of November 14, 2025, along with their ages (as of September 30, 2025), positions and business experience during the past five years.

Name |  | Age |  | Position with Company (1) |  | Appointed (2)
S. E. Doyle (3) |  | 54 |  | President and Chief Executive Officer |  | April 2025
|  |  |  | Executive Vice President, Chief Operating Officer (until April 2025) |  | January 2024
S. C. Greenley (4) |  | 50 |  | Executive Vice President, Chief Operating Officer |  | October 2025
A. W. Woodard |  | 53 |  | Executive Vice President, Chief Financial Officer |  | January 2025
|  |  |  | Chief Financial Officer and Treasurer, Spire Missouri and Spire Alabama (Until April 2025) |  | January 2020
|  |  |  | Vice President, Treasurer (until April 2025) |  | July 2018
M. J. Aplington |  | 44 |  | Senior Vice President, Chief Legal Officer |  | January 2025
|  |  |  | Vice President, Chief Legal Officer |  | January 2024
|  |  |  | General Counsel, Spire Alabama |  | October 2023
|  |  |  | General Counsel, Spire Missouri |  | January 2020
T. W. Krick |  | 50 |  | Vice President, Chief Accounting Officer |  | January 2025
|  |  |  | Vice President, Controller |  | February 2017
J. B. Hampton |  | 51 |  | Vice President |  | December 2018
|  |  |  | President, Spire Alabama |  | December 2018
R. L. Hyman |  | 48 |  | Senior Vice President, Chief Customer and Information Officer |  | July 2024
|  |  |  | Senior Vice President, Chief Information and Innovation Officer (until July 2024) |  | December 2018
S. M. Mills |  | 57 |  | Senior Vice President |  | July 2023
|  |  |  | President, Spire Missouri |  | July 2023
|  |  |  | Vice President and General Manager, Spire Missouri (until July 2023) |  | March 2020
C. M. Vomund |  | 44 |  | Senior Vice President, Chief Administrative Officer and Corporate Secretary |  | January 2025
|  |  |  | Vice President, Chief Administrative Officer and Corporate Secretary |  | July 2024
|  |  |  | Vice President, Corporate Secretary (until July 2024) |  | June 2022
|  |  |  | Managing Director, Associate General Counsel (until June 2022) |  | November 2020
|  |  |  | Corporate Secretary, Spire Missouri and Spire Alabama |  | January 2022

(1)
The information provided relates to the Company and its principal subsidiaries. Many of the executive officers have served or currently serve as officers or directors for other subsidiaries of the Company.
(2)
Officers are normally reappointed by the respective board of directors in January of each year.
(3)
Prior to joining Spire in 2024, Mr. Doyle served as executive vice president of utility operations at CenterPoint Energy Inc. ("CenterPoint") in Houston, Texas, leading electric and natural gas businesses serving seven million customers across multiple states. Prior to this role, he was CenterPoint's executive vice president of natural gas from April 2019 to January 2022, and he held numerous executive leadership positions of increasing responsibility at CenterPoint in natural gas operations and regulatory and public affairs.
(4)
Mr. Greenley worked for Enbridge Inc. (NYSE: ENB) as Senior Vice President – Commercial Services, Gas Distribution and Storage. Prior to this role, he worked at CenterPoint for over twenty-five years, serving in numerous executive leadership positions, including Senior Vice President - Utility Operations Support, Senior Vice President - Generation Development (Indiana Electric), Senior Vice President - Gas Operations, Natural Gas Distribution, Vice President - Distribution Power Delivery (Houston Electric)

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PA RT II

Ite m 5. Market for Registrant’s Common Equity, Related Stockholder Matters, and Issuer Purchases of Equity Securities

Spire

Spire’s common stock trades on The New York Stock Exchange ("NYSE") under the symbol “SR”. The number of holders of record as of November 10, 2025 was 2,274.

Dividends are payable on the Company’s common stock at the discretion of its Board. Spire, and Spire Missouri prior to the holding company’s formation in 2000, has paid common stock dividends continuously since 1946, with 2025 marking the 22nd consecutive year of increasing dividends on an annualized basis. Although the Board expects to continue paying dividends on the common stock for the foreseeable future, the declaration of dividends is not guaranteed. The amount of dividends on the common stock, if any, will depend upon the Company’s financial condition, results of operations, capital requirements, and other factors.

Performance Graph

COMPARISON OF FIVE-YEAR CUMULATIVE TOTAL RETURN*

September 30 |  | 2020 |  | 2021 |  | 2022 |  | 2023 |  | 2024 |  | 2025 |
Spire Inc. |  | $ | 100.00 |  | $ | 119.64 |  | $ | 126.81 |  | $ | 120.05 |  | $ | 150.00 |  | $ | 190.57 |
S&P 500 Utilities Index |  |  | 100.00 |  |  | 111.01 |  |  | 117.20 |  |  | 108.98 |  |  | 154.55 |  |  | 171.86 |
S&P 500 Index |  |  | 100.00 |  |  | 130.01 |  |  | 109.89 |  |  | 133.65 |  |  | 182.23 |  |  | 214.30 |

* Cumulative total return is based on a $100 investment on September 30, 2020, assuming reinvestment of dividends.

The S&P 500 Utilities Index is comprised of approximately 30 utilities heavily weighted to large capitalization (median market cap of $31.3 billion) electric utilities. In recent years, stocks of small- and mid-cap electric utilities and gas utility companies (like Spire) in general traded lower relative to the large-cap electric sector.

For disclosures related to securities authorized for issuance under equity compensation plans, see Note 3, Stock-Based Compensation, of the Notes to Financial Statements in Item 8.

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During the three months ended September 30, 2025, there were no repurchases of the Company’s common stock.

Spire Missouri

Spire Missouri common stock is owned by its parent, Spire Inc., and is not traded on any stock exchange.

Spire Missouri’s outstanding first mortgage bonds contain restrictions on its ability to pay cash dividends on its common stock, as described in further detail in Note 5, Shareholders’ Equity, of the Notes to Financial Statements in Item 8. As of September 30, 2025 and 2024, the amount under the mortgage’s formula that was available to pay dividends was $1,999.8 million and $1,797.0 million, respectively, so all of Spire Missouri’s retained earnings were free from such restrictions.

Spire Alabama

Spire Alabama common stock is owned by its parent, Spire Inc., and is not traded on any stock exchange.

Ite m 6. (Reserved)

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Ite m 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations

(Dollars in millions, except per share and per unit amounts)

INTRODUCTION

This section analyzes the financial condition and results of operations of Spire, Spire Missouri, and Spire Alabama. Refer to Item 1, Business, for descriptions of the businesses and the Company’s reportable segments. This Item 7 includes management’s discussion and analysis of financial results including changes in earnings and costs from the prior periods, as well as their financial condition and liquidity. Unless otherwise indicated, references to years herein are references to the fiscal years ending September 30 for the Company and its subsidiaries.

Reference is made to “Forward-Looking Statements” and Item 1A, Risk Factors, in Part I, which describe important factors that could cause actual results to differ from expectations and non-historical information contained herein. In addition, the following discussion should be read in conjunction with the audited financial statements and accompanying notes thereto of Spire, Spire Missouri and Spire Alabama included in Item 8, Financial Statements and Supplementary Data.

NON-GAAP MEASURES

Net income, earnings per share and operating income reported by Spire, Spire Missouri and Spire Alabama are determined in accordance with GAAP. Spire, Spire Missouri and Spire Alabama also provide the non-GAAP financial measures of adjusted earnings, adjusted earnings per share and contribution margin. Management and the Board of Directors use non-GAAP financial measures, in addition to GAAP financial measures, to understand and compare operating results across accounting periods, for financial and operational decision making, for planning and forecasting, to determine incentive compensation and to evaluate financial performance. These non-GAAP operating metrics should not be considered as alternatives to, or more meaningful than, the related GAAP measures. Reconciliations of non-GAAP financial measures to the most directly comparable GAAP measures are provided on the following pages.

Adjusted Earnings and Adjusted Earnings Per Share

Adjusted earnings and adjusted earnings per share are non-GAAP measures that exclude from net income, as applicable, the impacts of fair value accounting and timing adjustments associated with energy-related transactions, the impacts of acquisition, divestiture and restructuring activities, and the largely non-cash impacts of impairments and other non-recurring or unusual items such as certain regulatory, legislative or GAAP standard-setting actions. In addition, adjusted earnings per share would exclude the impact, in the fiscal year of issuance, of any shares issued to finance acquisitions that have yet to be included in adjusted earnings.

The fair value and timing adjustments are made in instances where the accounting treatment differs from what management considers the economic substance of the underlying transaction, including the following:

•
Net unrealized gains and losses on energy-related derivatives that are required by GAAP fair value accounting associated with current changes in the fair value of financial and physical transactions prior to their completion and settlement. These unrealized gains and losses result primarily from two sources:
1)
changes in the fair values of physical and/or financial derivatives prior to the period of settlement; and
2)
ineffective portions of accounting hedges, required to be recorded in earnings prior to settlement, due to differences in commodity price changes between the locations of the forecasted physical purchase or sale transactions and the locations of the underlying hedge instruments;
•
Lower of cost or market adjustments to the carrying value of commodity inventories resulting when the net realizable value of the commodity falls below its original cost, to the extent that those commodities are economically hedged; and
•
Realized gains and losses resulting from the settlement of economic hedges prior to the sale of the physical commodity.

These adjustments eliminate the impact of timing differences and the impact of current changes in the fair value of financial and physical transactions prior to their completion and settlement. Unrealized gains or losses are recorded in each period until being replaced with the actual gains or losses realized when the associated physical transactions occur. Management believes that excluding the earnings volatility caused by recognizing changes in fair value prior to settlement and other timing differences associated with related purchase and sale transactions provides a useful representation of the economic effects of only the actual settled transactions and their effects on results of operations. While management uses these non-GAAP measures to evaluate all of its businesses, the net effect of these fair value and timing adjustments on the Utilities’ earnings is minimal because gains or losses on their natural gas derivative instruments are deferred pursuant to state regulation.

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Contribution Margin

In addition to operating revenues and operating expenses, management also uses the non-GAAP measure of contribution margin when evaluating results of operations. Contribution margin is defined as operating revenues less natural gas costs and gross receipts tax expense. The Utilities pass to their customers (subject to prudence review by, as applicable, the MoPSC, APSC or MSPSC) increases and decreases in the wholesale cost of natural gas in accordance with their PGA clauses or GSA riders. The volatility of the wholesale natural gas market results in fluctuations from period to period in the recorded levels of, among other items, revenues and natural gas cost expense. Nevertheless, increases and decreases in the cost of gas associated with system gas sales volumes and gross receipts tax expense (which are calculated as a percentage of revenues), with the same amount (excluding immaterial timing differences) included in revenues, have no direct effect on operating income. Therefore, management believes that contribution margin is a useful supplemental measure, along with the remaining operating expenses, for assessing the Company’s and the Utilities’ performance.

PENDING ACQUISITION

On July 27, 2025, Spire entered into an agreement with Piedmont Natural Gas, a wholly-owned Subsidiary of Duke Energy, to acquire its Tennessee natural gas business that serves more than 200,000 customers in the Nashville area (the “Transaction”). The strategic rationale for the Company is described below:

•
We expect the Transaction to allow Spire to significantly expand its regulated utility footprint in high-quality jurisdictions and significantly increase the scale of its regulated business while delivering on Spire’s commitment to growth and creating long-term shareholder value.
•
We expect the Transaction to provide robust growth driven by customer additions and system integrity and reliability investments, aligned with Spire’s investment strategy. These long-term investments are expected to be supported by Tennessee’s constructive regulatory environment support of natural gas.
•
We expect the Transaction to support Spire’s long-term adjusted earnings per share growth expectations and provide meaningful investment opportunities. The acquisition is expected to generate incremental cash flow to support investment in the business, shareholder returns and dividend growth.

The stated purchase price of the Transaction is $2.48 billion subject to adjustment, including adjustments based on net working capital, regulatory assets and liabilities and capital expenditures at closing. The Transaction is supported by a fully committed bridge facility with Bank of Montreal ("BMO") Capital Markets Corp. for the entire purchase price.

We expect permanent financing for the acquisition to be provided through a balanced mix of debt, equity, and hybrid securities. As part of the financing plan, Spire is considering the sale of its natural gas storage facilities, Spire Storage West LLC and Spire Storage Salt Plains LLC, to help fund the acquisition. The sale would be subject to board approval and customary closing conditions, including regulatory approval.

The transaction is expected to close in the first quarter of calendar 2026, subject to customary closing conditions, including approval by the Tennessee Public Utility Commission ("TPUC"). On October 31, 2025, FERC approved the transfer of gas supply contracts to Spire. The applicable waiting period under the Hart-Scott-Rodino Antitrust Improvements Act expired without objection, satisfying one of the key regulatory requirements for the transaction.

EARNINGS

This section contains discussion and analysis of the results for the year ended September 30, 2025 compared to the results for the year ended September 30, 2024. The discussion and analysis of the results for the year ended September 30, 2024 compared to the results of the year ended September 30, 2023 can be found in Part II, Item 7 of Spire Inc.’s fiscal 2024 Annual Report on Form 10-K, filed with the SEC on November 20, 2024.

The following sections present and discuss the financial metrics in total and by registrant and segment.

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Spire

The following tables reconcile the Company’s adjusted earnings to net income.

|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | Per |
|  | Gas |  |  | Gas |  |  |  |  |  |  |  |  | Consol- |  |  | Diluted |
|  | Utility |  |  | Marketing |  |  | Midstream |  |  | Other |  |  | idated |  |  | Share** |
Year Ended September 30, 2025 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net Income (Loss) [GAAP] |  | $ | 231.4 |  |  | $ | 33.7 |  |  | $ | 56.3 |  |  | $ | (49.7 | ) |  | $ | 271.7 |  |  | $ | 4.37 |
Adjustments, pre-tax: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value and timing adjustments |  |  | — |  |  |  | (10.4 | ) |  |  | — |  |  |  | — |  |  |  | (10.4 | ) |  |  | (0.17 | )
Acquisition activities |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 15.2 |  |  |  | 15.2 |  |  |  | 0.26 |
Income tax effect of adjustments* |  |  | — |  |  |  | 2.6 |  |  |  | — |  |  |  | (3.6 | ) |  |  | (1.0 | ) |  |  | (0.02 | )
Adjusted Earnings (Loss) [Non-GAAP] |  | $ | 231.4 |  |  | $ | 25.9 |  |  | $ | 56.3 |  |  | $ | (38.1 | ) |  | $ | 275.5 |  |  | $ | 4.44 |
Year Ended September 30, 2024 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net Income (Loss) [GAAP] |  | $ | 217.0 |  |  | $ | 32.7 |  |  | $ | 31.7 |  |  | $ | (30.5 | ) |  | $ | 250.9 |  |  | $ | 4.19 |
Adjustments, pre-tax: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value and timing adjustments |  |  | — |  |  |  | (12.4 | ) |  |  | — |  |  |  | — |  |  |  | (12.4 | ) |  |  | (0.22 | )
Acquisition and restructuring activities activities |  |  | 5.0 |  |  |  | — |  |  |  | 2.3 |  |  |  | 0.3 |  |  |  | 7.6 |  |  |  | 0.14 |
Income tax effect of adjustments* |  |  | (1.2 | ) |  |  | 3.1 |  |  |  | (0.5 | ) |  |  | (0.1 | ) |  |  | 1.3 |  |  |  | 0.02 |
Adjusted Earnings (Loss) [Non-GAAP] |  | $ | 220.8 |  |  | $ | 23.4 |  |  | $ | 33.5 |  |  | $ | (30.3 | ) |  | $ | 247.4 |  |  | $ | 4.13 |
Year Ended September 30, 2023 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net Income (Loss) [GAAP] |  | $ | 200.5 |  |  | $ | 39.1 |  |  | $ | 12.0 |  |  | $ | (34.1 | ) |  | $ | 217.5 |  |  | $ | 3.85 |
Adjustments, pre-tax: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value and timing adjustments |  |  | — |  |  |  | 11.4 |  |  |  | — |  |  |  | — |  |  |  | 11.4 |  |  |  | 0.21 |
Acquisition activities |  |  | — |  |  |  | — |  |  |  | 2.5 |  |  |  | — |  |  |  | 2.5 |  |  |  | 0.05 |
Income tax effect of adjustments* |  |  | — |  |  |  | (2.9 | ) |  |  | (0.4 | ) |  |  | — |  |  |  | (3.3 | ) |  |  | (0.06 | )
Adjusted Earnings (Loss) [Non-GAAP] |  | $ | 200.5 |  |  | $ | 47.6 |  |  | $ | 14.1 |  |  | $ | (34.1 | ) |  | $ | 228.1 |  |  | $ | 4.05 |

*Income tax adjustments include amounts calculated by applying federal, state, and local income tax rates applicable to ordinary income to the amounts of the pre-tax reconciling items.

** Adjusted earnings per share is calculated by replacing consolidated net income with consolidated adjusted earnings in the diluted earnings per share calculation, which includes reductions for cumulative preferred dividends and participating shares.

Reconciliations of contribution margin to the most directly comparable GAAP measure are shown below.

|  | Gas |  |  | Gas |  |  |  |  |  |  |  |  |  |  |  |  |
|  | Utility |  |  | Marketing |  |  | Midstream |  |  | Other |  |  | Eliminations |  |  | Consolidated |
Year Ended September 30, 2025 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating Income (Loss) |  | $ | 406.2 |  |  | $ | 42.1 |  |  | $ | 83.8 |  |  | $ | (8.2 | ) |  | $ | — |  |  | $ | 523.9 |
Operation and maintenance expenses |  |  | 467.1 |  |  |  | 19.4 |  |  |  | 45.3 |  |  |  | 28.3 |  |  |  | (18.0 | ) |  |  | 542.1 |
Depreciation and amortization |  |  | 277.6 |  |  |  | 1.0 |  |  |  | 19.2 |  |  |  | 0.4 |  |  |  | — |  |  |  | 298.2 |
Taxes, other than income taxes |  |  | 201.3 |  |  |  | 1.2 |  |  |  | 4.2 |  |  |  | 0.1 |  |  |  | (0.1 | ) |  |  | 206.7 |
Less: Gross receipts tax expense |  |  | (115.5 | ) |  |  | (0.2 | ) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (115.7 | )
Contribution Margin [Non-GAAP] |  |  | 1,236.7 |  |  |  | 63.5 |  |  |  | 152.5 |  |  |  | 20.6 |  |  |  | (18.1 | ) |  |  | 1,455.2 |
Natural gas costs |  |  | 855.4 |  |  |  | 93.5 |  |  |  | 3.0 |  |  |  | — |  |  |  | (46.4 | ) |  |  | 905.5 |
Gross receipts tax expense |  |  | 115.5 |  |  |  | 0.2 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 115.7 |
Operating Revenues |  | $ | 2,207.6 |  |  | $ | 157.2 |  |  | $ | 155.5 |  |  | $ | 20.6 |  |  | $ | (64.5 | ) |  | $ | 2,476.4 |

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|  | Gas |  |  | Gas |  |  |  |  |  |  |  |  |  |  |  |  |
|  | Utility |  |  | Marketing |  |  | Midstream |  |  | Other |  |  | Eliminations |  |  | Consolidated |
Year Ended September 30, 2024 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating Income (Loss) [GAAP] |  | $ | 400.6 |  |  | $ | 41.2 |  |  | $ | 48.2 |  |  | $ | (1.7 | ) |  | $ | — |  |  | $ | 488.3 |
Operation and maintenance expenses |  |  | 452.8 |  |  |  | 18.2 |  |  |  | 34.7 |  |  |  | 18.7 |  |  |  | (17.0 | ) |  |  | 507.4 |
Depreciation and amortization |  |  | 263.6 |  |  |  | 1.5 |  |  |  | 12.8 |  |  |  | 0.5 |  |  |  | — |  |  |  | 278.4 |
Taxes, other than income taxes |  |  | 210.2 |  |  |  | 1.4 |  |  |  | 3.9 |  |  |  | 0.1 |  |  |  | — |  |  |  | 215.6 |
Less: Gross receipts tax expense |  |  | (128.0 | ) |  |  | (0.2 | ) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (128.2 | )
Contribution Margin [Non-GAAP] |  |  | 1,199.2 |  |  |  | 62.1 |  |  |  | 99.6 |  |  |  | 17.6 |  |  |  | (17.0 | ) |  |  | 1,361.5 |
Natural gas costs |  |  | 1,110.7 |  |  |  | 36.9 |  |  |  | 1.1 |  |  |  | — |  |  |  | (45.4 | ) |  |  | 1,103.3 |
Gross receipts tax expense |  |  | 128.0 |  |  |  | 0.2 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 128.2 |
Operating Revenues |  | $ | 2,437.9 |  |  | $ | 99.2 |  |  | $ | 100.7 |  |  | $ | 17.6 |  |  | $ | (62.4 | ) |  | $ | 2,593.0 |

|  | Gas |  |  | Gas |  |  |  |  |  |  |  |  |  |  |  |  |
|  | Utility |  |  | Marketing |  |  | Midstream |  |  | Other |  |  | Eliminations |  |  | Consolidated |
Year Ended September 30, 2023 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating Income (Loss) [GAAP] |  | $ | 350.8 |  |  | $ | 49.3 |  |  | $ | 24.3 |  |  | $ | (5.8 | ) |  | $ | — |  |  | $ | 418.6 |
Operation and maintenance expenses |  |  | 461.8 |  |  |  | 19.4 |  |  |  | 30.5 |  |  |  | 21.9 |  |  |  | (16.0 | ) |  |  | 517.6 |
Depreciation and amortization |  |  | 244.4 |  |  |  | 1.5 |  |  |  | 8.4 |  |  |  | 0.5 |  |  |  | — |  |  |  | 254.8 |
Taxes, other than income taxes |  |  | 210.3 |  |  |  | 1.2 |  |  |  | 2.9 |  |  |  | 0.1 |  |  |  | — |  |  |  | 214.5 |
Less: Gross receipts tax expense |  |  | (131.5 | ) |  |  | (0.3 | ) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (131.8 | )
Contribution Margin [Non-GAAP] |  |  | 1,135.8 |  |  |  | 71.1 |  |  |  | 66.1 |  |  |  | 16.7 |  |  |  | (16.0 | ) |  |  | 1,273.7 |
Natural gas costs |  |  | 1,189.6 |  |  |  | 107.7 |  |  |  | — |  |  |  | — |  |  |  | (36.5 | ) |  |  | 1,260.8 |
Gross receipts tax expense |  |  | 131.5 |  |  |  | 0.3 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 131.8 |
Operating Revenues |  | $ | 2,456.9 |  |  | $ | 179.1 |  |  | $ | 66.1 |  |  | $ | 16.7 |  |  | $ | (52.5 | ) |  | $ | 2,666.3 |

Select changes from the year ended September 30, 2024 to the year ended September 30, 2025 are summarized in the following table and discussed below.

|  | Gas |  |  | Gas |  |  |  |  |  | Other, Net of |  |  |  |
Changes FY25 from FY24 |  | Utility |  |  | Marketing |  |  | Midstream |  |  | Eliminations |  |  | Consolidated |
Net Income |  | $ | 14.4 |  |  | $ | 1.0 |  |  | $ | 24.6 |  |  | $ | (19.2 | ) |  | $ | 20.8 |
Adjusted Earnings [Non-GAAP] |  |  | 10.6 |  |  |  | 2.5 |  |  |  | 22.8 |  |  |  | (7.8 | ) |  |  | 28.1 |
Operating Revenues |  |  | (230.3 | ) |  |  | 58.0 |  |  |  | 54.8 |  |  |  | 0.9 |  |  |  | (116.6 | )
Contribution Margin [Non-GAAP] |  |  | 37.5 |  |  |  | 1.4 |  |  |  | 52.9 |  |  |  | 1.9 |  |  |  | 93.7 |
Operation and Maintenance Expenses |  |  | 14.3 |  |  |  | 1.2 |  |  |  | 10.6 |  |  |  | 8.6 |  |  |  | 34.7 |
Other Income (Expense) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (10.8 | )
Interest Expense |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3.0 |
Income Tax |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1.0 |

Interest expense reflects the impact of $5.4 in costs associated with the bridge facility backing the Piedmont Tennessee acquisition. Excluding this amount, interest expense declined $2.4 year-over-year. The decrease in interest expense reflects lower effective interest rates partially offset by higher average levels of debt in the current year. Weighted-average short-term interest rates were 4.5% in the current-year period versus 5.7% in the prior-year period, while weighted average interest rate on long-term debt decreased slightly from the prior year.

Other income decreased $10.8 versus the prior-year period, $20.2 excluding the impact of the Postretirement Non-Service Costs Transfer (“NSC Transfer”), which has no impact on net income. The principal drivers of the decline was a one-time $8.2 pre-tax hedging gain recognized in the prior year period, and a decline of gas-carrying cost credits at Spire Missouri of $9.4.

The increase in income taxes primarily reflects the higher current-year pre-tax book income.

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Gas Utility

For the twelve months ended September 30, 2025, Gas Utility net income and adjusted earnings were higher than the corresponding prior-year period by $14.4 and $10.6, respectively. Adjusted earnings growth was lower than net income growth primarily due to excluding the $3.8 after-tax charge relating to the customer affordability initiative that was recorded in the prior year. The year-to-date change in net income was driven by growth at both Spire Missouri and Spire Alabama totaling $9.9 and $4.8, respectively.

The decrease in Gas Utility operating revenues for fiscal 2025 was attributable to the following factors:

Spire Missouri and Spire Alabama – Lower PGA/GSA gas cost recoveries |  | $ | (285.5 | )
Spire Missouri and Spire Alabama – Lower gross receipt taxes |  |  | (12.4 | )
Spire Missouri – Infrastructure System Replacement Surcharge (ISRS) |  |  | 33.5 |
Spire Missouri and Spire Alabama– Off-system sales and capacity release |  |  | 28.4 |
Spire Missouri and Spire Alabama – Volumetric usage, including weather mitigation impact |  |  | 6.4 |
Spire Alabama – RSE adjustments |  |  | 5.2 |
All other factors |  |  | (5.9 | )
Total Variation |  | $ | (230.3 | )

The primary driver of the current year decrease in revenue was the $285.5 impact of lower gas cost recoveries across all utilities, driven principally by lower PGA rates at Spire Missouri. This was only partly offset by higher current year ISRS billings and higher off-system sales, impacts of Spire Missouri's and Spire Alabama’s volumetric usage, and favorable Spire Alabama RSE adjustments.

The year-over-year increase in Gas Utility contribution margin was attributable to the following factors:

Spire Missouri – ISRS |  | $ | 33.5 |
Spire Alabama – RSE adjustments |  |  | 5.0 |
Spire Missouri and Spire Alabama– Off-system sales and capacity release |  |  | 4.1 |
Spire Alabama – Volumetric usage including weather mitigation impact |  |  | (3.0 | )
All other factors |  |  | (2.1 | )
Total Variation |  | $ | 37.5 |

Contribution margin increased $37.5 versus the comparable prior-year period. Contribution margin benefited from the $33.5 Spire Missouri ISRS growth, $5.0 of growth from Spire Alabama’s RSE adjustments, and higher off-system sales. These favorable impacts more than offset the $3.0 negative impact of Spire Alabama’s volume usage net of weather mitigation adjustments and lower net other factors.

Reported operation and maintenance (“O&M”) expenses for the twelve months ended September 30, 2025 were $14.3 higher than the twelve months ended September 30, 2024. Removing the impact of the NSC Transfer, O&M expenses were $4.7 higher than the prior-year period. After excluding the $5.0 prior year charge relating to the Company’s customer affordability initiative, O&M expenses were $9.7 higher than the corresponding prior-year period. Higher employee-related costs in the current year, combined with higher field operations costs, were only partly mitigated by lower bad debts expense, and lower support costs.

Taxes, other than income taxes, decreased $8.9, as the $12.5 lower gross receipt taxes resulting from lower revenues more than offset higher property taxes. Depreciation and amortization expenses for the year ended September 30, 2025 were $14.0 higher than the same period in the prior year primarily driven by continued infrastructure capital expenditures across all the Utilities.

Interest expense decreased $10.2, with both Spire Missouri and Spire Alabama benefiting from lower average short-term interest rates in the current year.

The benefit of carrying cost credits at Spire Missouri, included in other income, decreased $9.4 versus the corresponding prior-year period.

Gas Marketing

Including $1.5 (after-tax) unfavorable mark-to-market activity, net income increased $1.0. The $2.5 year-over-year increase in adjusted earnings reflects realized business portfolio optimization opportunities that more than offset lower regional basis differentials, and higher storage and transportation fees in the current year.

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Contribution margin increased $1.4 versus the prior-year period, reflecting the $2.0 (pre-tax) unfavorable mark-to-market activity. Excluding this impact, contribution margin increased $3.4, reflecting realized business portfolio optimization opportunities that more than offset lower regional basis differentials, and higher storage and transportation fees in the current year.

O&M expenses were $1.2 higher than prior-year levels, the result of higher spend on outside services and higher employee costs in the current year.

Midstream

Our Midstream segment includes storage and pipeline operations which currently consist of an approximate year-to-date net income mix of 73% and 27%, respectively. Net income and adjusted earnings for the Company’s Midstream segment for the twelve months ended September 30, 2025 versus the comparable prior-year period increased $24.6 and $22.8, respectively. Approximately 96% of the adjusted earnings increase was attributable to our storage operations. The increase was driven by higher storage earnings, reflecting increased asset optimization, additional storage capacity and contract renewals at higher rates, combined with the acquisition of MoGas in the second quarter of the prior year.

Revenues in the current year increased $54.8 versus the prior-year period, reflecting the higher rates and activity with storage. O&M expenses were up $10.6 year-over-year, due primarily to costs associated with the higher storage activity in the current year, combined with non-recurring Spire MoGas acquisition costs of $2.3 in the prior year.

Other

The Company’s other activities generated a $49.7 loss in the twelve months ended September 30, 2025, $19.2 higher than the prior year. The major contributor to this variance was the $14.9 pre-tax ($11.4 after-tax) increase in acquisition and restructuring activities due to our recently announced Piedmont Tennessee acquisition, combined with the $8.2 ($6.3 after-tax) interest rate swap gain in the prior year that did not repeat. The remaining variance was mostly a result of higher interest expense in the current year that was only partly offset by lower corporate expenses.

Spire Missouri

|  | Year Ended September 30, |
|  | 2025 |  |  | 2024 |
Operating Income |  | $ | 234.5 |  |  | $ | 232.1 |
Operation and maintenance expenses |  |  | 300.7 |  |  |  | 287.4 |
Depreciation and amortization |  |  | 188.4 |  |  |  | 174.0 |
Taxes, other than income taxes |  |  | 151.1 |  |  |  | 157.7 |
Less: Gross receipts tax expense |  |  | (82.9 | ) |  |  | (93.1 | )
Contribution Margin [Non-GAAP] |  |  | 791.8 |  |  |  | 758.1 |
Natural gas costs |  |  | 669.4 |  |  |  | 886.2 |
Gross receipts tax expense |  |  | 82.9 |  |  |  | 93.1 |
Operating Revenues |  | $ | 1,544.1 |  |  | $ | 1,737.4 |
Net Income |  | $ | 128.3 |  |  | $ | 118.4 |

Revenues for the twelve months ended September 30, 2025 were $193.3 lower than the comparable prior-year period. Lower PGA rates reduced gas cost recoveries by $239.8. This reduced revenue driver also resulted in reduced gross receipts taxes of $10.2. These negative impacts were only partly offset by $33.5 incremental ISRS revenues, $23.2 attributable to higher off-system sales in the current-year, and increased weather-mitigated customer usage versus the prior-year period.

Contribution margin for the twelve months ended September 30, 2025 increased $33.7 from the same period in the prior year, primarily due to the $33.5 incremental ISRS billings and favorable $1.2 off-system sales impact.

Degree days in Spire Missouri’s service areas during the twelve months ended September 30, 2025 were 8.7% warmer than normal (normal currently defined as past 30-year average), though 11.8% colder than the same period last year. Spire Missouri’s total system volume sold and transported were 1,570.0 million centum (Latin for “hundred”) cubic feet (CCF) for the current year, compared with 1,469.2 million CCF for the same period in the prior year. Total off-system volume sold and transported were 77.7 million CCF for the current-year, compared with 38.2 million CCF a year ago.

Reported O&M expenses for the twelve months ended September 30, 2025 increased $13.3 versus the corresponding prior-year period. Removing the NSC Transfer impact, O&M expense increased $1.5. After excluding the $3.6 prior-year charge relating to the Company’s customer affordability initiative, O&M expenses were $5.1 higher than the corresponding

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prior year period. Higher field operations and employee-related costs were only partly mitigated by lower bad debt expense costs and lower Administrative and General (“A&G”) and support function costs resulting from customer affordability initiatives implemented last year.

Depreciation and amortization expenses increased $14.4 versus the comparable prior-year period due to ongoing capital investments. Taxes, other than income taxes decreased $6.6, as $10.2 lower pass-through gross receipts taxes more than offset the increase in property tax.

Other income declined by $0.6 versus the prior-year period, $12.4 after excluding the impact of the NSC Transfer. The decrease was primarily driven by the decrease in carrying cost credits of $9.4 and unfavorable mark-to-market unrealized losses on non-qualified benefit trusts.

Interest expense decreased $6.2, primarily reflecting lower average short-term interest rates in the current year that offset the impact of higher average debt levels.

Resulting net income for the twelve months ended September 30, 2025 increased $9.9 versus the twelve months ended September 30, 2024.

Spire Alabama

|  | Year Ended September 30, |
|  | 2025 |  |  | 2024 |
Operating Income |  | $ | 142.5 |  |  | $ | 138.3 |
Operation and maintenance expenses |  |  | 137.1 |  |  |  | 135.6 |
Depreciation and amortization |  |  | 71.0 |  |  |  | 72.8 |
Taxes, other than income taxes |  |  | 40.2 |  |  |  | 42.7 |
Less: Gross receipts tax expense |  |  | (27.9 | ) |  |  | (30.1 | )
Contribution Margin [Non-GAAP] |  |  | 362.9 |  |  |  | 359.3 |
Natural gas costs |  |  | 154.4 |  |  |  | 189.5 |
Gross receipts tax expense |  |  | 27.9 |  |  |  | 30.1 |
Operating Revenues |  | $ | 545.2 |  |  | $ | 578.9 |
Net Income |  | $ | 84.9 |  |  | $ | 80.1 |

Operating revenues for the twelve months ended September 30, 2025 decreased $33.7 from the same period in the prior year. The decrease in operating revenue was principally due to a $45.7 decrease in gas cost recovery, combined with lower gross receipts taxes totaling $2.2. These negative impacts were only partly offset by volumetric usage totaling $5.2, and favorable RSE renewal of $5.2.

Contribution margin was $3.6 higher versus the prior-year period, driven primarily by a net favorable $5.0 RSE update and higher off-system sales, partially offset by net unfavorable volume usage and weather mitigation adjustments of $3.0 and $0.5 lower CCM benefit.

As measured in degree days, temperatures in Spire Alabama’s service area during the twelve months ended September 30, 2025, were 4.2% warmer than normal, but 2.9% colder than a year ago. Spire Alabama’s total system volume sold and transported were 1,080.8 million CCF for the twelve months ended September 30, 2025, compared with 1,036.7 million CCF for the same period in the prior year. Total off-system volume sold and transported were 83.7 million CCF for the current-year period, compared with 90.9 million CCF off-system volume sold and transported in the prior-year period.

Reported O&M expenses for the twelve months ended September 30, 2025 declined $1.5 versus the comparable prior-year period. After excluding the impact of the NSC Transfer and the prior-year restructuring charge of $1.0, O&M expenses in the current year were $4.5 higher than the corresponding prior-year period. Higher payroll costs and bad debt expense were only partially offset by A&G and support function costs resulting from customer affordability initiatives implemented over the last year.

Depreciation and amortization expenses decreased $1.8 versus the comparable prior-year period as changes in rates offset the impact of ongoing capital investments. Taxes, other than income taxes decreased $2.5, driven by lower pass-through gross receipts taxes.

Interest expense for the current-year decreased $3.5 versus the prior year, primarily the result of lower short-term borrowings combined with lower short-term interest rates.

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For the twelve months ended September 30, 2025, resulting net income increased $4.8 versus the twelve months ended September 30, 2024.

LIQUIDITY AND CAPITAL RESOURCES

Recent Cash Flows

|  | 2025 |  |  | 2024 |  |  | 2023 |
Net cash provided by operating activities |  | $ | 578.0 |  |  | $ | 912.4 |  |  | $ | 440.2 |
Net cash used in investing activities |  |  | (916.4 | ) |  |  | (1,027.2 | ) |  |  | (695.5 | )
Net cash provided by financing activities |  |  | 344.7 |  |  |  | 123.9 |  |  |  | 260.6 |

Net cash provided by operating activities decreased $334.4 from 2024 to 2025 after increasing $472.2 from 2023 to 2024. In addition to the changes in net income between the respective periods (discussed in the “Earnings” section above), the remaining changes were related to regulatory timing and fluctuations in working capital items, as discussed below in the Future Cash Requirements section.

In 2025, the Company’s net cash used in investing activities was $110.8 less than the same period in the prior year due to payments for business acquisitions (net of cash acquired) of $175.9 for MoGas in the prior year. However, total capital expenditures were $61.1 higher than last year, with a $125.7 spending increase in the Utilities driven by infrastructure upgrades, advanced meter installations, and new business offset by a $64.5 spending decrease for Midstream.

In 2024, the Company's net cash used in investing activities was $331.7 more than in 2023, primarily driven by a $198.8 increase in capital expenditures and a $138.9 increase in business acquisitions (MoGas in 2024 relative to Spire Storage Salt Plains in 2024). Capital expenditures increased $102.5 in the Gas Utility segment (primarily due to continued meter and other infrastructure upgrades) and $97.7 in the Midstream segment (primarily due to the ongoing Wyoming storage facility expansion).

In 2025, net cash provided by financing activities increased $220.8 versus the same period in the prior year. For the fiscal year ended fiscal 2025, there was a $478.0 increase of debt, while debt increased $29.9 for 2024. The relative cash inflow of those changes was partially offset by a $210.8 decrease in cash from issuance of common stock and a relative net increase in cash outflow from dividends paid on common stock of $15.1 this year.

Net cash provided by financing activities was down $136.7 in 2024 compared to 2023 as a result of lower net debt issuances and higher dividends, partially offset by higher common stock issuances.

Future Cash Requirements

The Company’s short-term borrowing requirements typically peak during colder months when the Utilities borrow money to cover the lag between when they purchase natural gas and when their customers pay for that gas. Changes in the wholesale cost of natural gas (including cash payments for margin deposits associated with Spire Missouri’s use of natural gas derivative instruments), variations in the timing of collections of gas cost under the Utilities’ PGA clauses and GSA riders, the seasonality of accounts receivable balances, and the utilization of stored gas inventories cause short-term cash requirements to vary during the year and from year to year, and may cause significant variations in the Company’s cash provided by or used in operating activities.

Spire’s material cash requirements as of September 30, 2025, are related to the proposed acquisition of the Tennessee natural gas business from Piedmont Natural Gas, capital expenditures, principal and interest payments on long-term debt, natural gas purchase obligations, and common and preferred stock dividends.

The pending acquisition will require financing of $2.48 billion, expected to be funded through a balanced mix of debt, equity and hybrid securities. In connection with the financing plan, Spire is considering selling its natural gas storage facilities, Spire Storage West LLC and Spire Storage Salt Plains LLC, to help fund the acquisition. The sale is subject to board approval.

Total Company capital expenditures are planned to be $809 for fiscal 2026, though Spire had purchase commitments for only a fraction of these as of September 30, 2025.

As detailed in Note 6, Long-Term Debt, of the Notes to Financial Statements in Item 8, $487.5 of the total $3,879.1 principal amount is due in fiscal 2026. Using each long-term debt instrument’s stated maturity and fixed rates or variable rates as of September 30, 2025, interest payments are projected to total $1,731.7, of which $161.6 is due in fiscal 2026.

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Spire’s natural gas purchase obligations totaled $1,762.8, including $526.0 for fiscal 2026, representing the minimum payments required under existing natural gas transportation and storage contracts and natural gas supply agreements. The amounts reflect fixed obligations as well as obligations to purchase natural gas at future market prices, calculated using forward market prices as of September 30, 2025. Each of the Utilities generally recovers costs related to its purchases, transportation and storage of natural gas through the operation of its PGA clause or GSA rider, subject to prudence review by the appropriate regional public service commission. Additional contractual commitments are generally entered into prior to or during the heating season.

Spire dividends declared and payable as of September 30, 2025, totaled $51.1, while annualized dividends based on the shares outstanding and regular quarterly amounts declared on November 13, 2025 are estimated at $209.6.

Source of Funds

The Utilities rely on short-term credit and long-term capital markets, as well as cash flows from operations, to satisfy their seasonal cash requirements and fund their capital expenditures. The Utilities access the commercial paper market through a program administered by the holding company, which then loans borrowed funds to the Utilities. The Utilities directly access the long-term bond market. In addition to its own operating cash flows, Spire Marketing relies on Spire’s parental guaranties to secure its purchase and sales obligations of natural gas, and it also has access to Spire’s liquidity resources.

It is management’s view that the Company, Spire Missouri and Spire Alabama have adequate access to credit and capital markets and will have sufficient liquidity and capital resources, both internal and external, to meet anticipated requirements. Spire Missouri’s and Spire Alabama’s access to capital markets, including the commercial paper market, and their respective financing costs, may depend not only on current conditions in the credit and capital markets but also on the credit rating of the entity that is accessing the capital markets. Their debt is rated by two rating agencies: Standard & Poor’s Corporation (“S&P”) and Moody’s Investors Service (“Moody’s”). The debt ratings of the Company, Spire Missouri and Spire Alabama (shown in the following table) remain at investment grade with a stable outlook for Moody’s. S&P ratings also remain at investment grade with a negative outlook.

|  | S&P |  | Moody’s
Spire Inc. senior unsecured long-term debt |  | BBB |  | Baa2
Spire Inc. preferred stock |  | BBB- |  | Ba1
Spire Inc. short-term debt |  | A-2 |  | P-2
Spire Missouri senior secured long-term debt |  | A |  | A1
Spire Alabama senior unsecured long-term debt |  | BBB+ |  | A2

Management focuses on maintaining a strong balance sheet and believes the Company, Spire Missouri and Spire Alabama have adequate access to credit and capital markets and will have sufficient liquidity and capital resources, both internal and external, to meet anticipated requirements.

Cash and Cash Equivalents

Bank deposits were used to support working capital needs of the business. Spire had no temporary cash investments as of September 30, 2025 or 2024.

Short-term Debt

The Company’s short-term cash requirements can be met through the sale of up to $1,500.0 of commercial paper or through the use of Spire's $1,500.0 revolving credit facility. For information about these resources, see Note 7, Notes Payable and Credit Agreements, of the Notes to Financial Statements in Item 8 and “Interest Rate Risk” under “Market Risk” below.

In addition to the commercial paper program and revolving credit facility, the Company has access to a fully committed bridge financing facility in connection with the pending acquisition of Piedmont Natural Gas local distribution company business in Tennessee from Duke Energy. The facility provides up to $2.48 billion in short-term financing, including a $1.88 billion bridge term loan and a $600 million delayed draw term loan. For information about these resources, see Note 18, Business Combinations.

Long-term Debt and Equity

Factoring in the current portion of long-term debt, the Company’s long-term consolidated capitalization consisted of 47% equity at September 30, 2025 and 46% equity at September 30, 2024. At September 30, 2025, Spire had outstanding principal of long-term debt totaling $3,879.1, of which $1,968.0 was issued by Spire Missouri, $715.0 was issued by Spire Alabama, and $1,196.1 was issued by Spire and other subsidiaries.

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On October 23, 2025, Spire Missouri issued an aggregate principal amount of $200.0 of First Mortgage Bonds. The first tranche consisted of an aggregate principal amount of $150.0, bearing interest at 4.60% per annum and maturing on September 15, 2030. The second tranche consisted of an aggregate principal amount of $50.0, bears interest at 4.65% per annum and maturing on January 15, 2031. Interest is payable semi-annually on March 15 and September 15 of each year. The bonds are senior secured indebtedness of Spire Missouri and rank equally with all other existing and future senior secured indebtedness issued by Spire Missouri under its Mortgage and Deed of Trust. The bonds are secured by a first mortgage lien on substantially all the real properties of Spire Missouri, subject to limited exceptions. Spire Missouri used the proceeds for general corporate purposes.

Effective October 27, 2024, Spire Missouri was authorized by the MoPSC to issue conventional term loans, first mortgage bonds, unsecured debt, preferred stock and common stock in an aggregate amount not to exceed $850.0 any time from that date through December 31, 2027. Under this authorization, through October 23, 2025, Spire Missouri has issued $74.4 of common stock and $350 of first mortgage bonds. Approximately $426.0 remains available for issuance under this authorization. Spire Alabama has no standing authority to issue long-term debt and must petition the APSC for each planned issuance.

In February 2021, Spire issued 3.5 million equity units, initially in the form of Corporate Units. Each Corporate Unit was comprised of (i) a purchase contract for a certain number of shares of the Company's common stock and (ii) an interest in the Company's 2021 Series A 0.75% Remarketable Senior Notes due 2026 with an aggregate principal amount of $175.0. In February 2024, Spire successfully remarketed those notes on behalf of the selling securityholders. As a result, the interest rate on that original $175.0 obligation was reset to 5.300%. Also in February 2024, Spire sold an additional $175.0 aggregate principal amount of the 5.300% Senior Notes due March 1, 2026, with interest payable semiannually, and Spire received net proceeds of $173.5 from this offering. The Corporate Unit holders purchased an aggregate of 2,745,733 shares of common stock (net of fractional shares) for $175.0, settled on March 5, 2024.

Under Spire’s “at-the-market” (ATM) equity distribution agreement and as authorized by its board of directors, the Company may offer and sell, from time to time, shares of its common stock (including shares of common stock that may be sold pursuant to forward sale agreements entered into in connection with the ATM equity distribution agreement). Settled sales under this ATM program are included in “Common stock issued” in the Consolidated Statements of Shareholders’ Equity. In the second and third quarters of fiscal 2024, Spire executed forward sale agreements for a total of 542,515 shares of its common stock, which were settled in December 2024, generating $32.4 of net proceeds. In the fourth quarter of fiscal 2024, Spire executed forward sale agreements for 663,619 shares of its common stock, which were settled in March 2025, generating proceeds of $42.4. As of September 30, 2025, there were no outstanding forward sales agreements. As of September 30, 2025, under the ATM program, Spire may sell additional shares with an aggregate offering price of up to $123.6 through January 2027. The Company suspended activity under the ATM program beginning August 7, 2025, and such suspension will remain in effect until two business days after the Company files its Annual Report on Form 10-K for the fiscal year ended September 30, 2025.

For more information about equity, including the ATM program and the equity units, see Note 5 of the Notes to Financial Statements in Item 8. For more information about long-term debt, see Note 6 of the Notes to Financial Statements in Item 8 and “Interest Rate Risk” under “Market Risk” later in this Item 7.

ENVIRONMENTAL MATTERS

The Utilities and other Spire subsidiaries own and operate natural gas distribution, transmission and storage facilities, the operations of which are subject to various environmental laws, regulations and interpretations. While environmental issues resulting from such operations arise in the ordinary course of business, such issues have not materially affected the Company’s, Spire Missouri’s or Spire Alabama’s financial position and results of operations. As environmental laws, regulations and their interpretations change, however, the Company and the Utilities may be required to incur additional costs. For information relative to environmental matters, see Contingencies in Note 16 of the Notes to Financial Statements in Item 8.

REGULATORY MATTERS

For discussions of regulatory matters for Spire, Spire Missouri, and Spire Alabama, see Note 15, Regulatory Matters, of the Notes to Financial Statements in Item 8.

ACCOUNTING PRONOUNCEMENTS

The Company, Spire Missouri and Spire Alabama are evaluating the impact of recently issued accounting standards on their respective consolidated financial statements.

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CRITICAL ACCOUNTING ESTIMATES

Our discussion and analysis of our financial condition, results of operations, liquidity and capital resources are based upon our financial statements, which have been prepared in accordance with GAAP, which requires that we make estimates and judgments that affect the reported amounts of assets, liabilities, revenues and expenses, and related disclosure of contingent assets and liabilities. We evaluate our estimates on an ongoing basis. We base our estimates on historical experience and on various other assumptions that we believe are reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these estimates. We believe the following represent the more significant items requiring the use of judgment and estimates in preparing our financial statements:

Regulatory Accounting – The Utilities account for their regulated operations in accordance with FASB Accounting Standards Codification Topic 980, Regulated Operations. The provisions of this accounting guidance require, among other things, that financial statements of a rate-regulated enterprise reflect the actions of regulators, where appropriate. These actions may result in the recognition of revenues and expenses in time periods that are different than non-rate-regulated enterprises. When this occurs, costs are deferred as assets in the balance sheet (regulatory assets) and recorded as expenses when those amounts are reflected in rates. Also, regulators can impose liabilities upon a regulated company for amounts previously collected from customers and for recovery of costs that are expected to be incurred in the future (regulatory liabilities). Management believes that the current regulatory environment supports the continued use of these regulatory accounting principles and that all regulatory assets and regulatory liabilities are recoverable or refundable through the regulatory process. For Spire Missouri and Spire Alabama, management believes the following represent the more significant items recorded through the application of this accounting guidance:

PGA Clause – Spire Missouri’s PGA clauses allows it to flow through to customers, subject to a prudence review by the MoPSC, the cost of purchased gas supplies, including the costs, cost reductions and related carrying costs associated with the use of natural gas derivative instruments to hedge the purchase price of natural gas. The difference between actual costs incurred and costs recovered through the application of the PGA clauses are recorded as regulatory assets and regulatory liabilities that are recovered or refunded in a subsequent period. The PGA clauses also permit the application of carrying costs to all over- or under-recoveries of gas costs, including costs and cost reductions associated with the use of derivative instruments, and also provide for a portion of income from off-system sales and capacity release revenues to be flowed through to customers.

GSA Rider – Spire Alabama’s rate schedules for natural gas distribution charges contain a GSA rider, established in 1993, which permits the pass-through to customers of changes in the cost of gas supply. Spire Alabama’s tariff provides a temperature adjustment mechanism, also included in the GSA, that is designed to moderate the impact of departures from normal temperatures on Spire Alabama’s earnings. The temperature adjustment applies primarily to residential, small commercial and small industrial customers. Other non-temperature weather related conditions that may affect customer usage are not included in the temperature adjustment. In prior years, Spire Alabama entered into cash flow derivative commodity instruments to hedge its exposure to price fluctuations on its gas supply. Spire Alabama recognizes all derivatives at fair value as either assets or liabilities on the balance sheet. Any realized gains or losses are passed through to customers using the mechanisms of the GSA rider in accordance with Spire Alabama’s APSC approved tariff and are recognized as a regulatory asset or regulatory liability. All derivative commodity instruments in a gain position are valued on a discounted basis incorporating an estimate of performance risk specific to each related counterparty. Derivative commodity instruments in a loss position are valued on a discounted basis incorporating an estimate of performance risk specific to Spire Alabama. Spire Alabama currently has no active gas supply derivative positions.

ISRS – The ISRS allows Spire Missouri expedited recovery for its investment to upgrade its infrastructure and enhance its safety and reliability without the necessity of a formal rate case. Spire Missouri records ISRS revenues as authorized by the MoPSC and estimates the probability and amount of any refunds based on commission precedent, current legal rulings, the opinion of legal counsel, and other considerations.

For more information, see Note 15, Regulatory Matters, of the Notes to Financial Statements in Item 8.

Employee Benefits and Postretirement Obligations – Pension and postretirement obligations are calculated by actuarial consultants that utilize several statistical factors and other assumptions provided by management related to future events, such as discount rates, returns on plan assets, compensation increases, medical cost trends, and mortality rates. For the Utilities, the amount of expense recognized and the amounts reflected in other comprehensive income are dependent upon the regulatory treatment provided for such costs, as discussed further below.

The amount of net periodic pension and other postretirement benefit costs recognized in the financial statements related to the Utilities’ qualified pension plans and other postretirement benefit plans is based upon allowances, as approved by the MoPSC (for Spire Missouri) and as approved by the APSC (for Spire Alabama). The allowances have been established

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in the rate-making process for the recovery of these costs from customers. The differences between these amounts and actual pension and other postretirement benefit costs incurred for financial reporting purposes are deferred as regulatory assets or regulatory liabilities. GAAP also requires that changes that affect the funded status of pension and other postretirement benefit plans, but that are not yet required to be recognized as components of pension and other postretirement benefit costs, be reflected in other comprehensive income. For the Utilities’ qualified pension plans and other postretirement benefit plans, amounts that would otherwise be reflected in other comprehensive income are deferred with entries to regulatory assets or regulatory liabilities.

For more information, see Note 13, Pension Plans and Other Postretirement Benefits, of the Notes to Financial Statements in Item 8.

The tables below reflect the sensitivity of Spire’s plans to potential changes in key assumptions:

Pension Plan Benefits: |  |  |  | Estimated Increase/ |  |  |  |  |
|  |  |  | (Decrease) to |  | Estimated Increase/
|  | Increase/ |  | Projected |  | (Decrease) to Annual
Actuarial Assumptions |  | (Decrease) |  | Benefit Obligation |  | Net Pension Cost*
Discount Rate |  |  |  | 0.25 | % |  |  |  | $ | (10.1 | ) |  |  |  | $ | 0.1 |  |
|  |  |  | (0.25 | )% |  |  |  |  | 10.6 |  |  |  |  |  | (0.1 | ) |
Expected Return on Plan Assets |  |  |  | 0.25 | % |  |  |  |  | — |  |  |  |  |  | (1.0 | ) |
|  |  |  | (0.25 | )% |  |  |  |  | — |  |  |  |  |  | 1.0 |  |
Rate of Future Compensation Increase |  |  |  | 0.25 | % |  |  |  |  | 0.6 |  |  |  |  |  | 0.1 |  |
|  |  |  | (0.25 | )% |  |  |  |  | (0.6 | ) |  |  |  |  | (0.1 | ) |

Postretirement Benefits: |  |  |  | Estimated Increase/ |  |
|  |  |  | (Decrease) to |  | Estimated Increase/
|  |  |  | Projected |  | (Decrease) to Annual
|  | Increase/ |  | Postretirement |  | Net Postretirement
Actuarial Assumptions |  | (Decrease) |  | Benefit Obligation |  | Benefit Cost*
Discount Rate |  |  |  | 0.25 | % |  |  |  | $ | (2.6 | ) |  |  |  | $ | 0.1 |  |
|  |  |  | (0.25 | )% |  |  |  |  | 2.7 |  |  |  |  |  | (0.1 | ) |
Expected Return on Plan Assets |  |  |  | 0.25 | % |  |  |  |  | — |  |  |  |  |  | (0.8 | ) |
|  |  |  | (0.25 | )% |  |  |  |  | — |  |  |  |  |  | 0.8 |  |

* Excludes the impact of regulatory deferral mechanism. See Note 13, Pension Plans and Other Postretirement Benefits, of the Notes to Financial Statements in Item 8 for information regarding the regulatory treatment of these costs.

Income Taxes – Income tax calculations require estimates due to book-tax differences, estimates with respect to regulatory treatment of certain items, and uncertainty in the interpretation of tax laws and regulations. Critical assumptions and judgments also include projections of future taxable income to determine the ability to utilize net operating losses and credit carryforwards prior to their expiration. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. Management regularly assesses financial statement tax provisions to identify any change in regulatory treatment or tax related estimates and assumptions that could have a material impact on cash flows, financial position and/or results of operations. For more information, see Note 12, Income Taxes, of the Notes to Financial Statements in Item 8.

For further discussion of significant accounting policies, see Note 1, Summary of Significant Accounting Policies, of the Notes to Financial Statements in Item 8.

MARKET RISK

Commodity Price Risk

Gas Utility

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The Utilities’ commodity price risk, which arises from market fluctuations in the price of natural gas, is primarily managed through the operation of Spire Missouri’s PGA clauses and Spire Alabama’s GSA rider. The PGA clauses and GSA rider allows the Utilities to flow through to customers, subject to prudence review by the MoPSC and APSC, the cost of purchased gas supplies. Spire Missouri is allowed the flexibility to make up to three discretionary PGA changes during each year, in addition to its mandatory November PGA change, so long as such changes are separated by at least two months. Spire Missouri is able to mitigate, to some extent, changes in commodity prices through the use of physical storage supplies and regional supply diversity. Spire Alabama is allowed to make monthly changes to the GSA rate, but increases cannot exceed a 5% increase over the prior effective residential billing rate. The Utilities also have risk management policies that allow for the purchase of natural gas derivative instruments with the goal of managing its price risk associated with purchasing natural gas on behalf of its customers. These policies prohibit speculation. As of September 30, 2025, Spire Missouri had active natural gas derivative positions, but Spire Alabama did not. Costs and cost reduction, including carrying costs, associated with the use of natural gas derivative instruments are allowed to be passed on to customers through the operation of the PGA clauses or GSA rider. Accordingly, the Utilities do not expect any adverse earnings impact as a result of the use of these derivative instruments. However, the timing of recovery for cash payments related to margin requirements may cause short-term cash requirements to vary. For more information about the Utilities’ natural gas derivative instruments, see Note 10, Derivative Instruments and Hedging Activities, of the Notes to Financial Statements in Item 8.

Gas Marketing

In the course of its business, Spire’s non-regulated gas marketing subsidiary, Spire Marketing, enters into contracts to purchase and sell natural gas at fixed prices and natural gas index-based prices. Commodity price risk associated with these contracts has the potential to impact earnings and cash flows. To minimize this risk, Spire Marketing has a risk management policy that provides for daily monitoring of a number of business measures, including fixed price commitments. In accordance with the risk management policy, Spire Marketing manages the price risk associated with its fixed price commitments. This risk is currently managed either by closely matching the offsetting physical purchase or sale of natural gas at fixed-prices or through the use of natural gas futures, options and swap contracts traded on or cleared through the New York Mercantile Exchange (NYMEX) and Intercontinental Exchange ("ICE") to lock in margins. At September 30, 2025 and 202 4, Spire Marketing’s unmatched fixed-price positions were not material to Spire’s financial position or results of operations.

As mentioned above, Spire Marketing uses natural gas futures, options and swap contracts traded on or cleared through the NYMEX and ICE to manage the commodity price risk associated with its fixed-price natural gas purchase and sale commitments. These derivative instruments may be designated as cash flow hedges of forecasted purchases or sales. Such accounting treatment, if elected, generally permits a substantial portion of the gain or loss to be deferred from recognition in earnings until the period that the associated forecasted purchase or sale is recognized in earnings. To the extent a hedge is effective, gains or losses on the derivatives will be offset by changes in the value of the hedged forecasted transactions. At September 30, 2025 and 2024, Spire Marketing had no designated cash flow hedges. Information about the fair values of Spire Marketing’s exchange-traded/cleared natural gas derivative instruments is presented below:

|  | Derivative |  |  |  |  |  | Derivatives |
|  | Fair |  |  | Cash |  |  | and Cash |
|  | Values |  |  | Margin |  |  | Margin |
Net balance of derivative assets at September 30, 2024 |  | $ | (10.8 | ) |  | $ | 13.5 |  |  | $ | 2.7 |
Changes in fair value |  |  | 3.1 |  |  |  | — |  |  |  | 3.1 |
Settlements/purchases - net |  |  | (0.1 | ) |  |  | — |  |  |  | (0.1 | )
Changes in cash margin |  |  | — |  |  |  | (3.1 | ) |  |  | (3.1 | )
Net balance of derivative assets at September 30, 2025 |  | $ | (7.8 | ) |  | $ | 10.4 |  |  | $ | 2.6 |

|  | As of September 30, 2025 |
Maturity by Fiscal Year |  | Total |  |  | 2026 |  |  | 2027 |  |  | 2028 |
Fair values of exchange-traded/cleared natural gas derivatives - net |  | $ | (3.3 | ) |  | $ | (4.0 | ) |  | $ | 0.6 |  |  | $ | 0.1 |
Fair values of basis swaps - net |  |  | (1.2 | ) |  |  | (0.6 | ) |  |  | (0.5 | ) |  |  | (0.1 | )
Fair values of puts and calls - net |  |  | (3.0 | ) |  |  | (1.0 | ) |  |  | (2.0 | ) |  |  | — |
Position volumes [millions of MMBtu, long or (short)]: |  |  |  |  |  |  |  |  |  |  |  |
Net futures/swap/option positions |  |  | 10.9 |  |  |  | 5.0 |  |  |  | 5.2 |  |  |  | 0.7 |
Net basis swap positions |  |  | 10.8 |  |  |  | 7.0 |  |  |  | 3.5 |  |  |  | 0.3 |
Net puts and calls positions |  |  | (9.1 | ) |  |  | (5.6 | ) |  |  | (3.5 | ) |  |  | — |

Certain of Spire Marketing’s physical natural gas derivative contracts are designated as normal purchases or normal sales, as permitted by GAAP. This election permits the Company to account for the contract in the period the natural gas is

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delivered. Contracts not designated as normal purchases or normal sales, including those designated as trading activities, are accounted for as derivatives with changes in fair value recognized in earnings in the periods prior to settlement.

Below is a reconciliation of the beginning and ending balances for physical natural gas contracts accounted for as derivatives, none of which will settle beyond fiscal 2026:

Net balance of derivative liabilities at September 30, 2024 |  | $ | 21.5 |
Changes in fair value |  |  | (15.8 | )
Settlements |  |  | 22.4 |
Net balance of derivative liabilities at September 30, 2025 |  | $ | 28.1 |

For further details related to Spire Marketing’s derivatives and hedging activities, see Note 10, Derivative Instruments and Hedging Activities, of the Notes to Financial Statements in Item 8.

Counterparty Credit Risk

Spire Marketing has concentrations of counterparty credit risk in that a significant portion of its transactions are with energy producers, utility companies and pipelines. These concentrations of counterparties have the potential to affect the Company’s overall exposure to credit risk, either positively or negatively, in that each of these three groups may be affected similarly by changes in economic, industry or other conditions. Spire Marketing also has concentrations of credit risk with certain individually significant counterparties. To the extent possible, Spire Marketing enters into netting arrangements with its counterparties to mitigate exposure to credit risk. It is also exposed to credit risk associated with its derivative contracts designated as normal purchases and normal sales. Spire Marketing closely monitors its credit exposure and, although uncollectible amounts have not been significant, increased counterparty defaults are possible and may result in financial losses and/or capital limitations. For more information on these and other concentrations of credit risk, including how Spire Marketing manages these risks, see Note 11, Concentrations of Credit Risk, of the Notes to Financial Statements in Item 8.

Interest Rate Risk

The Company is subject to interest rate risk associated with its short-term debt issuances. Based on average short-term borrowings during fiscal 2025, an increase of 100 basis points in the underlying average interest rate for short-term debt would have caused an increase in interest expense (and a decrease in pre-tax earnings and cash flows) of approximately $10.9 on an annual basis. Portions of such an increase may be offset through the Utilities’ application of PGA and GSA carrying costs. At September 30, 2025, Spire had outstanding principal of long-term debt totaling $3,879.1, of which $1,968.0 was issued by Spire Missouri, $715.0 was issued by Spire Alabama, and $1,196.1 was issued by Spire and other subsidiaries. While the long-term debt issues are fixed-rate, they are subject to changes in fair value as market interest rates change. However, increases or decreases in fair value would impact earnings and cash flows only if the Company were to reacquire any of these issues in the open market prior to maturity. Under GAAP applicable to the Utilities’ regulated operations, losses or gains on early redemptions of long-term debt would typically be deferred as regulatory assets or regulatory liabilities and amortized over a future period.

Refer to Note 10, Derivative Instruments and Hedging Activities, of the Notes to Financial Statements in Item 8 for details on the Company’s interest rate swap transactions.

Ite m 7A. Quantitative and Qualitative Disclosures About Market Risk

For this discussion, see “Market Risk” in Item 7, Management’s Discussion and Analysis of Financial Condition and Results of Operations.

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Ite m 8. Financial Statements and Supplementary Data

| Page
Reports of Independent Registered Public Accounting Firm (PCAOB ID 34) | 41
Financial Statements (for years ended September 30, 2025, 2024, and 2023): |
Spire Inc. |
Consolidated Statements of Income | 48
Consolidated Statements of Comprehensive Income | 49
Consolidated Balance Sheets | 50
Consolidated Statements of Shareholders’ Equity | 52
Consolidated Statements of Cash Flows | 53
Spire Missouri Inc. |
Statements of Comprehensive Income | 54
Balance Sheets | 55
Statements of Shareholder’s Equity | 57
Statements of Cash Flows | 58
Spire Alabama Inc. |
Statements of Income | 59
Balance Sheets | 60
Statements of Shareholder’s Equity | 62
Statements of Cash Flows | 63
Notes to Financial Statements |
Note 1. Summary of Significant Accounting Policies | 64
Note 2. Revenue | 69
Note 3. Stock-Based Compensation | 71
Note 4. Earnings Per Common Share | 74
Note 5. Shareholders’ Equity | 74
Note 6. Long-Term Debt | 77
Note 7. Notes Payable and Credit Agreements | 79
Note 8. Fair Value of Financial Instruments | 80
Note 9. Fair Value Measurements | 80
Note 10. Derivative Instruments and Hedging Activities | 82
Note 11. Concentrations of Credit Risk | 87
Note 12. Income Taxes | 87
Note 13. Pension Plans and Other Postretirement Benefits | 89
Note 14. Segment Information | 97
Note 15. Regulatory Matters | 100
Note 16. Commitments and Contingencies | 103
Note 17. Leases | 106
Note 18. Business Combinations | 107

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REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the shareholders and the Board of Directors of Spire Inc.

Opinion on Internal Control over Financial Reporting

We have audited the internal control over financial reporting of Spire Inc. and subsidiaries (the "Company") as of September 30, 2025, based on criteria established in Internal Control — Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO). In our opinion, the Company maintained, in all material respects, effective internal control over financial reporting as of September 30, 2025, based on criteria established in Internal Control — Integrated Framework (2013) issued by COSO.

We have also audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the consolidated financial statements as of and for the year ended September 30, 2025, of the Company and our report dated November 14, 2025, expressed an unqualified opinion on those financial statements.

Basis for Opinion

The Company's management is responsible for maintaining effective internal control over financial reporting and for its assessment of the effectiveness of internal control over financial reporting, included in the accompanying Management Reports on Internal Control Over Financial Reporting. Our responsibility is to express an opinion on the Company's internal control over financial reporting based on our audit. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audit in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all material respects. Our audit included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, testing and evaluating the design and operating effectiveness of internal control based on the assessed risk, and performing such other procedures as we considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinion.

Definition and Limitations of Internal Control over Financial Reporting

A company's internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company's internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company's assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

/s/ Deloitte & Touche LLP

St. Louis, Missouri

November 14, 2025

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REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the shareholders and the Board of Directors of Spire Inc.

Opinion on the Financial Statements

We have audited the accompanying consolidated balance sheets of Spire Inc. and subsidiaries (the "Company") as of September 30, 2025 and 2024, the related consolidated statements of income, comprehensive income, shareholders' equity, and cash flows, for each of the three years in the period ended September 30, 2025, and the related notes (collectively referred to as the "financial statements"). In our opinion, the financial statements present fairly, in all material respects, the financial position of the Company as of September 30, 2025 and 2024, and the results of its operations and its cash flows for each of the three years in the period ended September 30, 2025, in conformity with accounting principles generally accepted in the United States of America.

We have also audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the Company's internal control over financial reporting as of September 30, 2025, based on criteria established in Internal Control — Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission and our report dated November 14, 2025, expressed an unqualified opinion on the Company's internal control over financial reporting.

Basis for Opinion

These financial statements are the responsibility of the Company's management. Our responsibility is to express an opinion on the Company's financial statements based on our audits. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud. Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. We believe that our audits provide a reasonable basis for our opinion.

Critical Audit Matter

The critical audit matter communicated below is a matter arising from the current-period audit of the financial statements that was communicated or required to be communicated to the audit committee and that (1) relates to accounts or disclosures that are material to the financial statements and (2) involved our especially challenging, subjective, or complex judgments. The communication of critical audit matters does not alter in any way our opinion on the financial statements, taken as a whole, and we are not, by communicating the critical audit matter below, providing separate opinions on the critical audit matter or on the accounts or disclosures to which it relates.

Regulatory Matters – Impact of Rate Regulation on the Financial Statements – Refer to Note 15 to the financial statements

Critical Audit Matter Description

The Company accounts for their regulated operations in accordance with Financial Accounting Standards Board Accounting Standards Codification Topic 980, Regulated Operations. The provisions of this accounting guidance require, among other things, that financial statements of a rate-regulated enterprise reflect the actions of regulators, where appropriate. These actions may result in the recognition of revenues and expenses in time periods that are different than non-rate-regulated enterprises. When this occurs, costs are deferred as assets in the balance sheet (regulatory assets) and recorded as expenses when those amounts are reflected in rates. Also, regulators can impose liabilities upon a regulated company for amounts previously collected from customers and for recovery of costs that are expected to be incurred in the future (regulatory liabilities).

The Company is subject to rate regulation by the Missouri and Alabama Public Service Commissions (the “Commissions”), which have jurisdiction with respect to the rates of natural gas companies within their respective geographies. The

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Company has stated that all regulatory assets and regulatory liabilities are recoverable or refundable through the regulatory process.

Accounting for the economics of rate regulation affects multiple financial statement line items, including property, plant, and equipment; regulatory assets and liabilities; operating revenues; and depreciation expense, and affects multiple disclosures in the Company’s financial statements. There is a risk that the Commissions will not approve full recovery of the costs of providing utility service or recovery of all amounts invested in the utility business and a reasonable return on that investment. As a result, we identified the impact of rate regulation as a critical audit matter due to the high degree of subjectivity involved in assessing the impact of current and future regulatory orders on events that have occurred as of September 30, 2025, and the judgments made by management to support its assertions about impacted account balances and disclosures. Management judgments included assessing the likelihood of (1) recovery in future rates of incurred costs or (2) refunds to customers or future reduction in rates. Given that management’s accounting judgments are based on assumptions about the outcome of future decisions by the Commissions, auditing these rate-impacted account balances and disclosures, and the related judgments, requires specialized knowledge of accounting for rate regulation due to the inherent complexities associated with the specialized rules related to accounting for the effects of cost-based regulation.

How the Critical Audit Matter Was Addressed in the Audit

Our audit procedures related to the impact of rate regulation include the following, among others:

• We tested the effectiveness of management’s controls over evaluating the likelihood of (1) the recovery in future rates of costs incurred as property, plant, and equipment or deferred as regulatory assets, and (2) a refund or a future reduction in rates that should be reported as regulatory liabilities. We tested the effectiveness of management’s controls over the initial recognition of amounts as property, plant, and equipment; regulatory assets or liabilities; and the monitoring and evaluation of regulatory developments that may affect the likelihood of recovering costs in future rates or of a future reduction in rates.

• We evaluated the Company’s disclosures related to the impacts of rate regulation, including the balances recorded and regulatory developments, in the financial statements.

• We read relevant regulatory orders issued by the Commissions for the Company in Missouri and Alabama; regulatory statutes, interpretations, procedural memorandums, and filings made by interveners; and other publicly available information to assess the likelihood of recovery in future rates or of a future reduction in rates based on precedents of the Commissions’ treatment of similar costs under similar circumstances.

• We obtained management’s analysis of the regulatory orders that support the probability of recovery, refund, and/or future reduction in rates for regulatory assets and liabilities and evaluated the basis of management’s assertion that amounts are probable of recovery, refund, or a future reduction in rates.

/s/ Deloitte & Touche LLP

St. Louis, Missouri

November 14, 2025

We have served as the Company’s auditor since 1953.

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REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the shareholder and the Board of Directors of Spire Missouri Inc.

Opinion on the Financial Statements

We have audited the accompanying balance sheets of Spire Missouri Inc. (a wholly owned subsidiary of Spire Inc.) (the "Company") as of September 30, 2025 and 2024, the related statements of comprehensive income, shareholders' equity, and cash flows, for each of the three years in the period ended September 30, 2025, and the related notes (collectively referred to as the "financial statements"). In our opinion, the financial statements present fairly, in all material respects, the financial position of the Company as of September 30, 2025 and 2024, and the results of its operations and its cash flows for each of the three years in the period ended September 30, 2025, in conformity with accounting principles generally accepted in the United States of America.

Basis for Opinion

These financial statements are the responsibility of the Company's management. Our responsibility is to express an opinion on the Company's financial statements based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (PCAOB) and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud. The Company is not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. As part of our audits, we are required to obtain an understanding of internal control over financial reporting but not for the purpose of expressing an opinion on the effectiveness of the Company's internal control over financial reporting. Accordingly, we express no such opinion.

Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. We believe that our audits provide a reasonable basis for our opinion.

Critical Audit Matter

The critical audit matter communicated below is a matter arising from the current-period audit of the financial statements that was communicated or required to be communicated to the audit committee and that (1) relates to accounts or disclosures that are material to the financial statements and (2) involved our especially challenging, subjective, or complex judgments. The communication of critical audit matters does not alter in any way our opinion on the financial statements, taken as a whole, and we are not, by communicating the critical audit matter below, providing separate opinions on the critical audit matter or on the accounts or disclosures to which it relates.

Regulatory Matters – Impact of Rate Regulation on the Financial Statements – Refer to Note 15 to the financial statements

Critical Audit Matter Description

The Company accounts for their regulated operations in accordance with Financial Accounting Standards Board Accounting Standards Codification Topic 980, Regulated Operations. The provisions of this accounting guidance require, among other things, that financial statements of a rate-regulated enterprise reflect the actions of regulators, where appropriate. These actions may result in the recognition of revenues and expenses in time periods that are different than non-rate-regulated enterprises. When this occurs, costs are deferred as assets in the balance sheet (regulatory assets) and recorded as expenses when those amounts are reflected in rates. Also, regulators can impose liabilities upon a regulated company for amounts previously collected from customers and for recovery of costs that are expected to be incurred in the future (regulatory liabilities).

The Company is subject to rate regulation by the Missouri Public Service Commission (the “Commission”), which has jurisdiction with respect to the rates of natural gas companies within Missouri’s geography. The Company has stated that all regulatory assets and regulatory liabilities are recoverable or refundable through the regulatory process.

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Accounting for the economics of rate regulation affects multiple financial statement line items, including property, plant, and equipment; regulatory assets and liabilities; operating revenues; and depreciation expense, and affects multiple disclosures in the Company’s financial statements. There is a risk that the Commission will not approve full recovery of the costs of providing utility service or recovery of all amounts invested in the utility business and a reasonable return on that investment. As a result, we identified the impact of rate regulation as a critical audit matter due to the high degree of subjectivity involved in assessing the impact of current and future regulatory orders on events that have occurred as of September 30, 2025, and the judgments made by management to support their assertions about impacted account balances and disclosures. Management judgments included assessing the likelihood of (1) recovery in future rates of incurred costs or (2) refunds to customers or future reduction in rates. Given that management’s accounting judgments are based on assumptions about the outcome of future decisions by the Commission, auditing these rate-impacted account balances and disclosures, and the related judgments, requires specialized knowledge of accounting for rate regulation due to the inherent complexities associated with the specialized rules related to accounting for the effects of cost-based regulation.

How the Critical Audit Matter Was Addressed in the Audit

Our audit procedures related to the impact of rate regulation include the following, among others:

•
We tested the effectiveness of management’s controls over evaluating the likelihood of (1) the recovery in future rates of costs incurred as property, plant, and equipment or deferred as regulatory assets, and (2) a refund or a future reduction in rates that should be reported as regulatory liabilities. We tested the effectiveness of management’s controls over the initial recognition of amounts as property, plant, and equipment; regulatory assets or liabilities; and the monitoring and evaluation of regulatory developments that may affect the likelihood of recovering costs in future rates or of a future reduction in rates.
•
We evaluated the Company’s disclosures related to the impacts of rate regulation, including the balances recorded and regulatory developments, in the financial statements.
•
We read relevant regulatory orders issued by the Commission for the Company in Missouri; regulatory statutes, interpretations, procedural memorandums, and filings made by interveners; and other publicly available information to assess the likelihood of recovery in future rates or of a future reduction in rates based on precedents of the Commission’s treatment of similar costs under similar circumstances.
•
We obtained management’s analysis of the regulatory orders that support the probability of recovery, refund, and/or future reduction in rates for regulatory assets and liabilities and evaluated the basis of management’s assertion that amounts are probable of recovery, refund, or a future reduction in rates.

/s/ Deloitte & Touche LLP

St. Louis, Missouri

November 14, 2025

We have served as the Company’s auditor since 1953.

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REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the shareholder and the Board of Directors of Spire Alabama Inc.

Opinion on the Financial Statements

We have audited the accompanying balance sheets of Spire Alabama Inc. (a wholly owned subsidiary of Spire Inc.) (the "Company") as of September 30, 2025 and 2024, the related statements of comprehensive income, shareholders' equity, and cash flows, for each of the three years in the period ended September 30, 2025, and the related notes (collectively referred to as the "financial statements"). In our opinion, the financial statements present fairly, in all material respects, the financial position of the Company as of September 30, 2025 and 2024, and the results of its operations and its cash flows for each of the three years in the period ended September 30, 2025, in conformity with accounting principles generally accepted in the United States of America.

Basis for Opinion

These financial statements are the responsibility of the Company's management. Our responsibility is to express an opinion on the Company's financial statements based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (PCAOB) and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud. The Company is not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. As part of our audits, we are required to obtain an understanding of internal control over financial reporting but not for the purpose of expressing an opinion on the effectiveness of the Company's internal control over financial reporting. Accordingly, we express no such opinion.

Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. We believe that our audits provide a reasonable basis for our opinion.

Critical Audit Matter

The critical audit matter communicated below is a matter arising from the current-period audit of the financial statements that was communicated or required to be communicated to the audit committee and that (1) relates to accounts or disclosures that are material to the financial statements and (2) involved our especially challenging, subjective, or complex judgments. The communication of critical audit matters does not alter in any way our opinion on the financial statements, taken as a whole, and we are not, by communicating the critical audit matter below, providing separate opinions on the critical audit matter or on the accounts or disclosures to which it relates.

Regulatory Matters – Impact of Rate Regulation on the Financial Statements – Refer to Note 15 to the financial statements

Critical Audit Matter Description

The Company accounts for their regulated operations in accordance with Financial Accounting Standards Board Accounting Standards Codification Topic 980, Regulated Operations. The provisions of this accounting guidance require, among other things, that financial statements of a rate-regulated enterprise reflect the actions of regulators, where appropriate. These actions may result in the recognition of revenues and expenses in time periods that are different than non-rate-regulated enterprises. When this occurs, costs are deferred as assets in the balance sheet (regulatory assets) and recorded as expenses when those amounts are reflected in rates. Also, regulators can impose liabilities upon a regulated company for amounts previously collected from customers and for recovery of costs that are expected to be incurred in the future (regulatory liabilities).

The Company is subject to rate regulation by the Alabama Public Service Commission (the “Commission”), which has jurisdiction with respect to the rates of natural gas companies within Alabama’s geography. The Company has stated that all regulatory assets and regulatory liabilities are recoverable or refundable through the regulatory process.

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Accounting for the economics of rate regulation affects multiple financial statement line items, including property, plant, and equipment; regulatory assets and liabilities; operating revenues; and depreciation expense, and affects multiple disclosures in the Company’s financial statements. There is a risk that the Commission will not approve full recovery of the costs of providing utility service or recovery of all amounts invested in the utility business and a reasonable return on that investment. As a result, we identified the impact of rate regulation as a critical audit matter due to the high degree of subjectivity involved in assessing the impact of current and future regulatory orders on events that have occurred as of September 30, 2025, and the judgments made by management to support their assertions about impacted account balances and disclosures. Management judgments included assessing the likelihood of (1) recovery in future rates of incurred costs or (2) refunds to customers or future reduction in rates. Given that management’s accounting judgments are based on assumptions about the outcome of future decisions by the Commission, auditing these rate-impacted account balances and disclosures, and the related judgments, requires specialized knowledge of accounting for rate regulation due to the inherent complexities associated with the specialized rules related to accounting for the effects of cost-based regulation.

How the Critical Audit Matter Was Addressed in the Audit

Our audit procedures related to the impact of rate regulation include the following, among others:

•
We tested the effectiveness of management’s controls over evaluating the likelihood of (1) the recovery in future rates of costs incurred as property, plant, and equipment or deferred as regulatory assets, and (2) a refund or a future reduction in rates that should be reported as regulatory liabilities. We tested the effectiveness of management’s controls over the initial recognition of amounts as property, plant, and equipment; regulatory assets or liabilities; and the monitoring and evaluation of regulatory developments that may affect the likelihood of recovering costs in future rates or of a future reduction in rates.
•
We evaluated the Company’s disclosures related to the impacts of rate regulation, including the balances recorded and regulatory developments, in the financial statements.
•
We read relevant regulatory orders issued by the Commission for the Company in Alabama, regulatory statutes, interpretations, procedural memorandums, and filings made by interveners; and other publicly available information to assess the likelihood of recovery in future rates or of a future reduction in rates based on precedents of the Commission’s treatment of similar costs under similar circumstances.
•
We obtained management’s analysis of the regulatory orders that support the probability of recovery, refund, and/or future reduction in rates for regulatory assets and liabilities and evaluated the basis of management’s assertion that amounts are probable of recovery, refund, or a future reduction in rates.

/s/ Deloitte & Touche LLP

St. Louis, Missouri

November 14, 2025

We have served as the Company’s auditor since 2014.

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SPIRE INC.

CONSOLIDATED STATEMENTS OF INCOME

|  | Years Ended September 30 |
(In millions, except per share amounts) |  | 2025 |  |  | 2024 |  |  | 2023 |
Operating Revenues |  | $ | 2,476.4 |  |  | $ | 2,593.0 |  |  | $ | 2,666.3 |
Operating Expenses: |  |  |  |  |  |  |  |  |
Natural gas |  |  | 905.5 |  |  |  | 1,103.3 |  |  |  | 1,260.8 |
Operation and maintenance |  |  | 542.1 |  |  |  | 507.4 |  |  |  | 517.6 |
Depreciation and amortization |  |  | 298.2 |  |  |  | 278.4 |  |  |  | 254.8 |
Taxes, other than income taxes |  |  | 206.7 |  |  |  | 215.6 |  |  |  | 214.5 |
Total Operating Expenses |  |  | 1,952.5 |  |  |  | 2,104.7 |  |  |  | 2,247.7 |
Operating Income |  |  | 523.9 |  |  |  | 488.3 |  |  |  | 418.6 |
Interest Expense |  |  | 204.1 |  |  |  | 201.1 |  |  |  | 185.7 |
Other Income, Net |  |  | 11.6 |  |  |  | 22.4 |  |  |  | 23.4 |
Income Before Income Taxes |  |  | 331.4 |  |  |  | 309.6 |  |  |  | 256.3 |
Income Tax Expense |  |  | 59.7 |  |  |  | 58.7 |  |  |  | 38.8 |
Net Income |  |  | 271.7 |  |  |  | 250.9 |  |  |  | 217.5 |
Provision for preferred dividends |  |  | 14.8 |  |  |  | 14.8 |  |  |  | 14.8 |
Income allocated to participating securities |  |  | 0.3 |  |  |  | 0.3 |  |  |  | 0.3 |
Net Income Available to Common Shareholders |  | $ | 256.6 |  |  | $ | 235.8 |  |  | $ | 202.4 |
Weighted Average Number of Common Shares Outstanding: |  |  |  |  |  |  |  |  |
Basic |  |  | 58.5 |  |  |  | 56.1 |  |  |  | 52.5 |
Diluted |  |  | 58.7 |  |  |  | 56.3 |  |  |  | 52.6 |
Basic Earnings Per Share of Common Stock |  | $ | 4.39 |  |  | $ | 4.20 |  |  | $ | 3.86 |
Diluted Earnings Per Share of Common Stock |  | $ | 4.37 |  |  | $ | 4.19 |  |  | $ | 3.85 |

See the accompanying Notes to Financial Statements.

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SPIRE INC.

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

|  | Years Ended September 30 |
(In millions) |  | 2025 |  |  | 2024 |  |  | 2023 |
Net Income |  | $ | 271.7 |  |  | $ | 250.9 |  |  | $ | 217.5 |
Other Comprehensive Income (Loss), Before Tax: |  |  |  |  |  |  |  |  |
Cash flow hedging derivative instruments: |  |  |  |  |  |  |  |  |
Net hedging gain (loss) arising during the period |  |  | 12.8 |  |  |  | (15.9 | ) |  |  | 20.1 |
Amounts reclassified into regulatory liabilities |  |  | — |  |  |  | (20.1 | ) |  |  | (17.5 | )
Amounts reclassified into net income |  |  | (5.1 | ) |  |  | (11.1 | ) |  |  | (2.4 | )
Net gain (loss) on cash flow hedging derivative instruments |  |  | 7.7 |  |  |  | (47.1 | ) |  |  | 0.2 |
Net gain on defined benefit pension and other postretirement plans |  |  | 1.3 |  |  |  | 0.6 |  |  |  | 0.2 |
Net unrealized gain on available-for-sale debt securities |  |  | 0.1 |  |  |  | 0.2 |  |  |  | 0.1 |
Other Comprehensive Income (Loss), Before Tax |  |  | 9.1 |  |  |  | (46.3 | ) |  |  | 0.5 |
Income Tax Expense (Benefit) Related to Items of Other Comprehensive Income |  |  | 1.8 |  |  |  | (10.8 | ) |  |  | 0.1 |
Other Comprehensive Income (Loss), Net of Tax |  |  | 7.3 |  |  |  | (35.5 | ) |  |  | 0.4 |
Comprehensive Income |  | $ | 279.0 |  |  | $ | 215.4 |  |  | $ | 217.9 |

See the accompanying Notes to Financial Statements.

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SPIRE INC.

CONSOLIDATED BALANCE SHEETS

|  | September 30 |
(Dollars in millions, except per share amounts) |  | 2025 |  |  | 2024 |
ASSETS |  |  |  |  |  |
Utility Plant |  | $ | 9,333.9 |  |  | $ | 8,779.1 |
Less: Accumulated depreciation and amortization |  |  | 2,577.4 |  |  |  | 2,535.8 |
Net Utility Plant |  |  | 6,756.5 |  |  |  | 6,243.3 |
Non-utility Property (net of accumulated depreciation and amortization of $129.4 and $96.8 at September 30, 2025 and 2024, respectively) |  |  | 1,007.2 |  |  |  | 955.3 |
Other Investments |  |  | 128.0 |  |  |  | 115.3 |
Total Other Property and Investments |  |  | 1,135.2 |  |  |  | 1,070.6 |
Current Assets: |  |  |  |  |  |
Cash and cash equivalents |  |  | 5.7 |  |  |  | 4.5 |
Accounts receivable: |  |  |  |  |  |
Utility |  |  | 191.9 |  |  |  | 196.3 |
Other |  |  | 152.7 |  |  |  | 112.5 |
Allowance for credit losses |  |  | (28.8 | ) |  |  | (31.4 | )
Delayed customer billings |  |  | 13.6 |  |  |  | 12.0 |
Inventories: |  |  |  |  |  |
Natural gas |  |  | 226.9 |  |  |  | 208.6 |
Propane gas |  |  | 8.6 |  |  |  | 8.6 |
Materials and supplies |  |  | 47.0 |  |  |  | 46.7 |
Regulatory assets |  |  | 78.3 |  |  |  | 115.4 |
Prepayments |  |  | 47.8 |  |  |  | 47.6 |
Other |  |  | 64.0 |  |  |  | 50.5 |
Total Current Assets |  |  | 807.7 |  |  |  | 771.3 |
Deferred Charges and Other Assets: |  |  |  |  |  |
Goodwill |  |  | 1,171.6 |  |  |  | 1,171.6 |
Regulatory assets |  |  | 1,323.5 |  |  |  | 1,251.8 |
Other |  |  | 380.8 |  |  |  | 352.1 |
Total Deferred Charges and Other Assets |  |  | 2,875.9 |  |  |  | 2,775.5 |
Total Assets |  | $ | 11,575.3 |  |  | $ | 10,860.7 |

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SPIRE INC.

CONSOLIDATED BALANCE SHEETS (Continued)

|  | September 30 |
|  | 2025 |  |  | 2024 |
CAPITALIZATION AND LIABILITIES |  |  |  |  |  |
Capitalization: |  |  |  |  |  |
Preferred stock ($25.00 par value per share; 10.0 million depositary shares authorized, issued and outstanding at September 30, 2025 and 2024) |  | $ | 242.0 |  |  | $ | 242.0 |
Common stock (par value $1.00 per share; 70.0 million shares authorized; 59.0 million shares and 57.7 million shares issued and outstanding at September 30, 2025, and 2024, respectively) |  |  | 59.0 |  |  |  | 57.7 |
Paid-in capital |  |  | 1,981.4 |  |  |  | 1,902.2 |
Retained earnings |  |  | 1,087.6 |  |  |  | 1,018.7 |
Accumulated other comprehensive income |  |  | 19.4 |  |  |  | 12.1 |
Total Shareholders' Equity |  |  | 3,389.4 |  |  |  | 3,232.7 |
Temporary equity |  |  | 6.1 |  |  |  | 8.6 |
Long-term debt (less current portion) |  |  | 3,369.4 |  |  |  | 3,704.4 |
Total Capitalization |  |  | 6,764.9 |  |  |  | 6,945.7 |
Current Liabilities: |  |  |  |  |  |
Current portion of long-term debt |  |  | 487.5 |  |  |  | 42.0 |
Notes payable |  |  | 1,317.0 |  |  |  | 947.0 |
Accounts payable |  |  | 248.3 |  |  |  | 237.2 |
Advance customer billings |  |  | 58.1 |  |  |  | 48.4 |
Wages and compensation accrued |  |  | 54.1 |  |  |  | 51.5 |
Customer deposits |  |  | 32.8 |  |  |  | 29.9 |
Taxes accrued |  |  | 109.1 |  |  |  | 105.2 |
Regulatory liabilities |  |  | 39.4 |  |  |  | 49.5 |
Other |  |  | 202.3 |  |  |  | 193.2 |
Total Current Liabilities |  |  | 2,548.6 |  |  |  | 1,703.9 |
Deferred Credits and Other Liabilities: |  |  |  |  |  |
Deferred income taxes |  |  | 887.4 |  |  |  | 808.4 |
Pension and postretirement benefit costs |  |  | 74.7 |  |  |  | 146.7 |
Asset retirement obligations |  |  | 583.2 |  |  |  | 579.9 |
Regulatory liabilities |  |  | 578.0 |  |  |  | 535.5 |
Other |  |  | 138.5 |  |  |  | 140.6 |
Total Deferred Credits and Other Liabilities |  |  | 2,261.8 |  |  |  | 2,211.1 |
Commitments and Contingencies (Note 16) |  |  |  |  |  |
Total Capitalization and Liabilities |  | $ | 11,575.3 |  |  | $ | 10,860.7 |

See the accompanying Notes to Financial Statements.

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SPIRE INC.

CONSOLIDATED STATEMENTS OF SHAREHOLDERS’ EQUITY

(Dollars in millions, |  | Common Stock |  |  | Preferred |  |  | Paid-in |  |  | Retained |  |  |  |  |  |  |
except per share amounts) |  | Shares |  |  | Par |  |  | Stock |  |  | Capital |  |  | Earnings |  |  | AOCI* |  |  | Total |
Balance at September 30, 2022 |  |  | 52,494,543 |  |  | $ | 52.5 |  |  | $ | 242.0 |  |  | $ | 1,571.3 |  |  | $ | 905.5 |  |  | $ | 47.2 |  |  | $ | 2,818.5 |
Net income |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 217.5 |  |  |  | — |  |  |  | 217.5 |
Common stock issued |  |  | 611,872 |  |  |  | 0.6 |  |  |  | — |  |  |  | 39.9 |  |  |  | — |  |  |  | — |  |  |  | 40.5 |
Dividend reinvestment plan |  |  | 22,230 |  |  |  | — |  |  |  | — |  |  |  | 1.5 |  |  |  | — |  |  |  | — |  |  |  | 1.5 |
Stock-based compensation costs |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 5.3 |  |  |  | — |  |  |  | — |  |  |  | 5.3 |
Stock issued under stock-based compensation plans |  |  | 60,007 |  |  |  | 0.1 |  |  |  | — |  |  |  | (0.1 | ) |  |  | — |  |  |  | — |  |  |  | — |
Employees’ tax withholding for stock-based compensation |  |  | (18,428 | ) |  |  | — |  |  |  | — |  |  |  | (1.4 | ) |  |  | — |  |  |  | — |  |  |  | (1.4 | )
Temporary equity adjustment to redemption value |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 2.3 |  |  |  | — |  |  |  | 2.3 |
Dividends declared: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock ($2.88 per share) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (152.5 | ) |  |  | — |  |  |  | (152.5 | )
Preferred stock ($1.475 per depositary share) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (14.8 | ) |  |  | — |  |  |  | (14.8 | )
Other comprehensive income, net of tax |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.4 |  |  |  | 0.4 |
Balance at September 30, 2023 |  |  | 53,170,224 |  |  | $ | 53.2 |  |  | $ | 242.0 |  |  | $ | 1,616.5 |  |  | $ | 958.0 |  |  | $ | 47.6 |  |  | $ | 2,917.3 |
Net income |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 250.9 |  |  |  | — |  |  |  | 250.9 |
Common stock issued |  |  | 4,490,282 |  |  |  | 4.4 |  |  |  | — |  |  |  | 280.9 |  |  |  | — |  |  |  | — |  |  |  | 285.3 |
Dividend reinvestment plan |  |  | 26,041 |  |  |  | — |  |  |  | — |  |  |  | 1.5 |  |  |  | — |  |  |  | — |  |  |  | 1.5 |
Stock-based compensation costs |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 4.8 |  |  |  | — |  |  |  | — |  |  |  | 4.8 |
Stock issued under stock-based compensation plans |  |  | 87,844 |  |  |  | 0.1 |  |  |  | — |  |  |  | (0.1 | ) |  |  | — |  |  |  | — |  |  |  | — |
Employees’ tax withholding for stock-based compensation |  |  | (24,724 | ) |  |  | — |  |  |  | — |  |  |  | (1.4 | ) |  |  | — |  |  |  | — |  |  |  | (1.4 | )
Temporary equity adjustment to redemption value |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (2.5 | ) |  |  | — |  |  |  | (2.5 | )
Dividends declared: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock ($3.02 per share) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (172.9 | ) |  |  | — |  |  |  | (172.9 | )
Preferred stock ($1.475 per depositary share) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (14.8 | ) |  |  | — |  |  |  | (14.8 | )
Other comprehensive loss, net of tax |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (35.5 | ) |  |  | (35.5 | )
Balance at September 30, 2024 |  |  | 57,749,667 |  |  | $ | 57.7 |  |  | $ | 242.0 |  |  | $ | 1,902.2 |  |  | $ | 1,018.7 |  |  | $ | 12.1 |  |  | $ | 3,232.7 |
Net income |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 271.7 |  |  |  | — |  |  |  | 271.7 |
Common stock issued |  |  | 1,206,134 |  |  |  | 1.2 |  |  |  | — |  |  |  | 73.5 |  |  |  | — |  |  |  | — |  |  |  | 74.7 |
Dividend reinvestment plan |  |  | 22,006 |  |  |  | — |  |  |  | — |  |  |  | 1.5 |  |  |  | — |  |  |  | — |  |  |  | 1.5 |
Stock-based compensation costs |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 6.1 |  |  |  | — |  |  |  | — |  |  |  | 6.1 |
Stock issued under stock-based compensation plans |  |  | 73,471 |  |  |  | 0.1 |  |  |  | — |  |  |  | (0.1 | ) |  |  | — |  |  |  | — |  |  |  | — |
Employees’ tax withholding for stock-based compensation |  |  | (25,317 | ) |  |  | — |  |  |  | — |  |  |  | (1.8 | ) |  |  | — |  |  |  | — |  |  |  | (1.8 | )
Temporary equity adjustment to redemption value |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (2.8 | ) |  |  | — |  |  |  | (2.8 | )
Dividends declared: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock ($3.14 per share) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (185.2 | ) |  |  | — |  |  |  | (185.2 | )
Preferred stock ($1.475 per depositary share) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (14.8 | ) |  |  | — |  |  |  | (14.8 | )
Other comprehensive income, net of tax |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 7.3 |  |  |  | 7.3 |
Balance at September 30, 2025 |  |  | 59,025,961 |  |  | $ | 59.0 |  |  | $ | 242.0 |  |  | $ | 1,981.4 |  |  | $ | 1,087.6 |  |  | $ | 19.4 |  |  | $ | 3,389.4 |

* Accumulated other comprehensive income (loss)

See the accompanying Notes to Financial Statements.

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SPIRE INC.

CONSOLIDATED STATEMENTS OF CASH FLOWS

|  | Years Ended September 30 |
(In millions) |  | 2025 |  |  | 2024 |  |  | 2023 |
Operating Activities: |  |  |  |  |  |  |  |  |
Net Income |  | $ | 271.7 |  |  | $ | 250.9 |  |  | $ | 217.5 |
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |  |  |  |  |  |  |
Depreciation and amortization |  |  | 298.2 |  |  |  | 278.4 |  |  |  | 254.8 |
Deferred income taxes and investment tax credits |  |  | 57.3 |  |  |  | 57.0 |  |  |  | 36.9 |
Changes in assets and liabilities: |  |  |  |  |  |  |  |  |
Accounts receivable |  |  | (38.4 | ) |  |  | 12.7 |  |  |  | 334.2 |
Inventories |  |  | (18.6 | ) |  |  | 15.8 |  |  |  | 142.8 |
Regulatory assets and liabilities |  |  | 26.5 |  |  |  | 341.4 |  |  |  | (68.7 | )
Accounts payable |  |  | 47.5 |  |  |  | (25.1 | ) |  |  | (389.2 | )
Delayed/advance customer billings, net |  |  | 8.1 |  |  |  | 37.5 |  |  |  | 1.5 |
Taxes accrued |  |  | 6.0 |  |  |  | 1.1 |  |  |  | 15.0 |
Other assets and liabilities |  |  | (93.4 | ) |  |  | (65.6 | ) |  |  | (117.6 | )
Other |  |  | 13.1 |  |  |  | 8.3 |  |  |  | 13.0 |
Net cash provided by operating activities |  |  | 578.0 |  |  |  | 912.4 |  |  |  | 440.2 |
Investing Activities: |  |  |  |  |  |  |  |  |
Capital expenditures |  |  | (922.4 | ) |  |  | (861.3 | ) |  |  | (662.5 | )
Business acquisition, net of cash acquired |  |  | — |  |  |  | (175.9 | ) |  |  | (37.0 | )
Other |  |  | 6.0 |  |  |  | 10.0 |  |  |  | 4.0 |
Net cash used in investing activities |  |  | (916.4 | ) |  |  | (1,027.2 | ) |  |  | (695.5 | )
Financing Activities: |  |  |  |  |  |  |  |  |
Issuance of long-term debt |  |  | 150.0 |  |  |  | 495.0 |  |  |  | 755.0 |
Repayment of long-term debt |  |  | (42.0 | ) |  |  | (456.6 | ) |  |  | (281.2 | )
Issuance (repayment) of short-term debt, net |  |  | 370.0 |  |  |  | (8.5 | ) |  |  | (82.0 | )
Issuance of common stock |  |  | 76.2 |  |  |  | 287.0 |  |  |  | 41.9 |
Dividends paid on common stock |  |  | (182.2 | ) |  |  | (167.1 | ) |  |  | (150.7 | )
Dividends paid on preferred stock |  |  | (14.8 | ) |  |  | (14.8 | ) |  |  | (14.8 | )
Other |  |  | (12.5 | ) |  |  | (11.1 | ) |  |  | (7.6 | )
Net cash provided by financing activities |  |  | 344.7 |  |  |  | 123.9 |  |  |  | 260.6 |
Net Increase in Cash, Cash Equivalents, and Restricted Cash |  |  | 6.3 |  |  |  | 9.1 |  |  |  | 5.3 |
Cash, Cash Equivalents, and Restricted Cash at Beginning of Year |  |  | 34.9 |  |  |  | 25.8 |  |  |  | 20.5 |
Cash, Cash Equivalents, and Restricted Cash at End of Year |  | $ | 41.2 |  |  | $ | 34.9 |  |  | $ | 25.8 |
Supplemental disclosure of cash paid for: |  |  |  |  |  |  |  |  |
Interest, net of amounts capitalized |  | $ | (207.1 | ) |  | $ | (205.6 | ) |  | $ | (177.5 | )
Income taxes |  |  | (2.9 | ) |  |  | (0.9 | ) |  |  | (2.0 | )

See the accompanying Notes to Financial Statements.

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SPIRE MISSOURI INC.

STATEMENTS OF COMPREHENSIVE INCOME

|  | Years Ended September 30 |
(In millions) |  | 2025 |  |  | 2024 |  |  | 2023 |
Operating Revenues |  | $ | 1,544.1 |  |  | $ | 1,737.4 |  |  | $ | 1,762.9 |
Operating Expenses: |  |  |  |  |  |  |  |  |
Natural gas |  |  | 669.4 |  |  |  | 886.2 |  |  |  | 943.4 |
Operation and maintenance |  |  | 300.7 |  |  |  | 287.4 |  |  |  | 296.2 |
Depreciation and amortization |  |  | 188.4 |  |  |  | 174.0 |  |  |  | 158.7 |
Taxes, other than income taxes |  |  | 151.1 |  |  |  | 157.7 |  |  |  | 157.5 |
Total Operating Expenses |  |  | 1,309.6 |  |  |  | 1,505.3 |  |  |  | 1,555.8 |
Operating Income |  |  | 234.5 |  |  |  | 232.1 |  |  |  | 207.1 |
Interest Expense |  |  | 100.2 |  |  |  | 106.4 |  |  |  | 97.4 |
Other Income, Net |  |  | 7.8 |  |  |  | 8.4 |  |  |  | 19.4 |
Income Before Income Taxes |  |  | 142.1 |  |  |  | 134.1 |  |  |  | 129.1 |
Income Tax Expense |  |  | 13.8 |  |  |  | 15.7 |  |  |  | 11.6 |
Net Income |  |  | 128.3 |  |  |  | 118.4 |  |  |  | 117.5 |
Other Comprehensive Income, Net of Tax |  |  | 1.3 |  |  |  | 0.5 |  |  |  | 0.2 |
Comprehensive Income |  | $ | 129.6 |  |  | $ | 118.9 |  |  | $ | 117.7 |

See the accompanying Notes to Financial Statements.

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SPIRE MISSOURI INC.

BALANCE SHEETS

|  | September 30 |
(Dollars in millions, except per share amounts) |  | 2025 |  |  | 2024 |
ASSETS |  |  |  |  |  |
Utility Plant |  | $ | 5,864.3 |  |  | $ | 5,420.2 |
Less: Accumulated depreciation and amortization |  |  | 1,104.6 |  |  |  | 1,086.0 |
Net Utility Plant |  |  | 4,759.7 |  |  |  | 4,334.2 |
Other Property and Investments |  |  | 75.8 |  |  |  | 70.1 |
Current Assets: |  |  |  |  |  |
Accounts receivable: |  |  |  |  |  |
Utility |  |  | 149.1 |  |  |  | 152.9 |
Associated companies |  |  | 2.2 |  |  |  | 2.8 |
Other |  |  | 34.0 |  |  |  | 22.2 |
Allowance for credit losses |  |  | (23.0 | ) |  |  | (24.9 | )
Delayed customer billings |  |  | 4.2 |  |  |  | 5.7 |
Inventories: |  |  |  |  |  |
Natural gas |  |  | 150.0 |  |  |  | 129.6 |
Propane gas |  |  | 8.6 |  |  |  | 8.6 |
Materials and supplies |  |  | 24.5 |  |  |  | 24.4 |
Regulatory assets |  |  | 48.9 |  |  |  | 84.0 |
Prepayments |  |  | 28.2 |  |  |  | 27.2 |
Total Current Assets |  |  | 426.7 |  |  |  | 432.5 |
Deferred Charges and Other Assets: |  |  |  |  |  |
Goodwill |  |  | 210.2 |  |  |  | 210.2 |
Regulatory assets |  |  | 653.2 |  |  |  | 588.0 |
Other |  |  | 224.2 |  |  |  | 193.6 |
Total Deferred Charges and Other Assets |  |  | 1,087.6 |  |  |  | 991.8 |
Total Assets |  | $ | 6,349.8 |  |  | $ | 5,828.6 |

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SPIRE MISSOURI INC.

BALANCE SHEETS (continued)

|  | September 30 |
|  | 2025 |  |  | 2024 |
CAPITALIZATION AND LIABILITIES |  |  |  |  |  |
Capitalization: |  |  |  |  |  |
Common stock (par value $1.00 per share; 50.0 million shares authorized; 26,822 and 25,855 issued and outstanding at September 30, 2025 and 2024, respectively) |  | $ | 0.1 |  |  | $ | 0.1 |
Paid-in capital |  |  | 929.2 |  |  |  | 854.8 |
Retained earnings |  |  | 1,239.1 |  |  |  | 1,110.8 |
Accumulated other comprehensive loss |  |  | (0.7 | ) |  |  | (2.0 | )
Total Shareholder's Equity |  |  | 2,167.7 |  |  |  | 1,963.7 |
Long-term debt |  |  | 1,953.6 |  |  |  | 1,803.4 |
Total Capitalization |  |  | 4,121.3 |  |  |  | 3,767.1 |
Current Liabilities: |  |  |  |  |  |
Notes payable – associated companies |  |  | 566.3 |  |  |  | 495.3 |
Accounts payable |  |  | 98.9 |  |  |  | 92.0 |
Accounts payable – associated companies |  |  | 21.4 |  |  |  | 7.6 |
Advance customer billings |  |  | 43.2 |  |  |  | 35.5 |
Wages and compensation accrued |  |  | 27.0 |  |  |  | 24.2 |
Customer deposits |  |  | 7.2 |  |  |  | 6.1 |
Taxes accrued |  |  | 65.8 |  |  |  | 60.2 |
Regulatory liabilities |  |  | 13.9 |  |  |  | 10.2 |
Other |  |  | 64.3 |  |  |  | 50.6 |
Total Current Liabilities |  |  | 908.0 |  |  |  | 781.7 |
Deferred Credits and Other Liabilities: |  |  |  |  |  |
Deferred income taxes |  |  | 598.7 |  |  |  | 567.6 |
Pension and postretirement benefit costs |  |  | 72.4 |  |  |  | 110.0 |
Asset retirement obligations |  |  | 95.5 |  |  |  | 95.7 |
Regulatory liabilities |  |  | 481.3 |  |  |  | 443.3 |
Other |  |  | 72.6 |  |  |  | 63.2 |
Total Deferred Credits and Other Liabilities |  |  | 1,320.5 |  |  |  | 1,279.8 |
Commitments and Contingencies (Note 16) |  |  |  |  |  |
Total Capitalization and Liabilities |  | $ | 6,349.8 |  |  | $ | 5,828.6 |

See the accompanying Notes to Financial Statements.

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SPIRE MISSOURI INC.

STATEMENTS OF SHAREHOLDER’S EQUITY

|  | Common Stock |  |  | Paid-in |  |  | Retained |  |  |  |  |  |  |
(Dollars in millions) |  | Shares |  |  | Par |  |  | Capital |  |  | Earnings |  |  | AOCI* |  |  | Total |
Balance at September 30, 2022 |  |  | 25,325 |  |  | $ | 0.1 |  |  | $ | 816.1 |  |  | $ | 931.9 |  |  | $ | (2.7 | ) |  | $ | 1,745.4 |
Net income |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 117.5 |  |  |  | — |  |  |  | 117.5 |
Common stock issued to Spire Inc. |  |  | 530 |  |  |  | — |  |  |  | 38.7 |  |  |  | — |  |  |  | — |  |  |  | 38.7 |
Dividends declared |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (57.0 | ) |  |  | — |  |  |  | (57.0 | )
Other comprehensive income, net of tax |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.2 |  |  |  | 0.2 |
Balance at September 30, 2023 |  |  | 25,855 |  |  |  | 0.1 |  |  |  | 854.8 |  |  |  | 992.4 |  |  |  | (2.5 | ) |  |  | 1,844.8 |
Net income |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 118.4 |  |  |  | — |  |  |  | 118.4 |
Other comprehensive income, net of tax |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 0.5 |  |  |  | 0.5 |
Balance at September 30, 2024 |  |  | 25,855 |  |  |  | 0.1 |  |  |  | 854.8 |  |  |  | 1,110.8 |  |  |  | (2.0 | ) |  |  | 1,963.7 |
Net income |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 128.3 |  |  |  | — |  |  |  | 128.3 |
Common stock issued to Spire Inc. |  |  | 967 |  |  |  | — |  |  |  | 74.4 |  |  |  | — |  |  |  | — |  |  |  | 74.4 |
Other comprehensive income, net of tax |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 1.3 |  |  |  | 1.3 |
Balance at September 30, 2025 |  |  | 26,822 |  |  | $ | 0.1 |  |  | $ | 929.2 |  |  | $ | 1,239.1 |  |  | $ | (0.7 | ) |  | $ | 2,167.7 |

* Accumulated other comprehensive income (loss)

See the accompanying Notes to Financial Statements.

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SPIRE MISSOURI INC.

STATEMENTS OF CASH FLOWS

|  | Years Ended September 30 |
(In millions) |  | 2025 |  |  | 2024 |  |  | 2023 |
Operating Activities: |  |  |  |  |  |  |  |  |
Net Income |  | $ | 128.3 |  |  | $ | 118.4 |  |  | $ | 117.5 |
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |  |  |  |  |  |  |
Depreciation and amortization |  |  | 188.4 |  |  |  | 174.0 |  |  |  | 158.7 |
Deferred income taxes and investment tax credits |  |  | 13.6 |  |  |  | 14.8 |  |  |  | 11.6 |
Changes in assets and liabilities: |  |  |  |  |  |  |  |  |
Accounts receivable |  |  | (9.3 | ) |  |  | (14.2 | ) |  |  | 16.0 |
Inventories |  |  | (20.5 | ) |  |  | 3.0 |  |  |  | 80.2 |
Regulatory assets and liabilities |  |  | 22.0 |  |  |  | 310.8 |  |  |  | (22.4 | )
Accounts payable |  |  | 28.6 |  |  |  | (5.3 | ) |  |  | (45.7 | )
Delayed/advance customer billings, net |  |  | 9.2 |  |  |  | 36.7 |  |  |  | 2.2 |
Taxes accrued |  |  | 5.9 |  |  |  | 0.1 |  |  |  | 9.7 |
Other assets and liabilities |  |  | (25.2 | ) |  |  | (65.2 | ) |  |  | (108.4 | )
Other |  |  | 2.7 |  |  |  | 1.4 |  |  |  | 1.7 |
Net cash provided by operating activities |  |  | 343.7 |  |  |  | 574.5 |  |  |  | 221.1 |
Investing Activities: |  |  |  |  |  |  |  |  |
Capital expenditures |  |  | (641.2 | ) |  |  | (553.0 | ) |  |  | (447.5 | )
Other |  |  | 4.5 |  |  |  | 6.7 |  |  |  | 4.1 |
Net cash used in investing activities |  |  | (636.7 | ) |  |  | (546.3 | ) |  |  | (443.4 | )
Financing Activities: |  |  |  |  |  |  |  |  |
Issuance of long-term debt |  |  | 150.0 |  |  |  | 320.0 |  |  |  | 400.0 |
Repayment of long-term debt |  |  | — |  |  |  | (300.0 | ) |  |  | (250.0 | )
Borrowings (repayments to) from Spire, net |  |  | 71.0 |  |  |  | (45.3 | ) |  |  | 95.3 |
Issuance of common stock |  |  | 74.4 |  |  |  | — |  |  |  | 38.7 |
Dividends paid |  |  | — |  |  |  | — |  |  |  | (57.0 | )
Other |  |  | (2.4 | ) |  |  | (3.7 | ) |  |  | (3.9 | )
Net cash provided by (used in) financing activities |  |  | 293.0 |  |  |  | (29.0 | ) |  |  | 223.1 |
Net Increase (Decrease) in Cash and Cash Equivalents |  |  | — |  |  |  | (0.8 | ) |  |  | 0.8 |
Cash and Cash Equivalents at Beginning of Year |  |  | — |  |  |  | 0.8 |  |  |  | — |
Cash and Cash Equivalents at End of Year |  | $ | — |  |  | $ | — |  |  | $ | 0.8 |
Supplemental disclosure of cash paid for: |  |  |  |  |  |  |  |  |
Interest, net of amounts capitalized |  | $ | (102.9 | ) |  | $ | (111.6 | ) |  | $ | (93.8 | )
Income taxes |  |  | (0.9 | ) |  |  | (0.4 | ) |  |  | (0.2 | )

See the accompanying Notes to Financial Statements.

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SPIRE ALABAMA INC.

STATEMENTS OF INCOME

|  | Years Ended September 30 |
(In millions) |  | 2025 |  |  | 2024 |  |  | 2023 |
Operating Revenues |  | $ | 545.2 |  |  | $ | 578.9 |  |  | $ | 571.1 |
Operating Expenses: |  |  |  |  |  |  |  |  |
Natural gas |  |  | 154.4 |  |  |  | 189.5 |  |  |  | 202.7 |
Operation and maintenance |  |  | 137.1 |  |  |  | 135.6 |  |  |  | 136.4 |
Depreciation and amortization |  |  | 71.0 |  |  |  | 72.8 |  |  |  | 69.3 |
Taxes, other than income taxes |  |  | 40.2 |  |  |  | 42.7 |  |  |  | 43.0 |
Total Operating Expenses |  |  | 402.7 |  |  |  | 440.6 |  |  |  | 451.4 |
Operating Income |  |  | 142.5 |  |  |  | 138.3 |  |  |  | 119.7 |
Interest Expense |  |  | 29.6 |  |  |  | 33.1 |  |  |  | 34.9 |
Other Income, Net |  |  | 0.4 |  |  |  | 1.8 |  |  |  | 1.5 |
Income Before Income Taxes |  |  | 113.3 |  |  |  | 107.0 |  |  |  | 86.3 |
Income Tax Expense |  |  | 28.4 |  |  |  | 26.9 |  |  |  | 20.3 |
Net Income |  | $ | 84.9 |  |  | $ | 80.1 |  |  | $ | 66.0 |

See the accompanying Notes to Financial Statements.

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SPIRE ALABAMA INC.

BALANCE SHEETS

|  | September 30 |
(Dollars in millions, except per share amounts) |  | 2025 |  |  | 2024 |
ASSETS |  |  |  |  |  |
Utility Plant |  | $ | 3,052.9 |  |  | $ | 2,966.6 |
Less: Accumulated depreciation and amortization |  |  | 1,362.4 |  |  |  | 1,336.6 |
Net Utility Plant |  |  | 1,690.5 |  |  |  | 1,630.0 |
Other Property and Investments |  |  | 0.1 |  |  |  | 0.1 |
Current Assets: |  |  |  |  |  |
Cash and cash equivalents |  |  | 1.9 |  |  |  | 1.5 |
Accounts receivable: |  |  |  |  |  |
Utility |  |  | 34.8 |  |  |  | 35.5 |
Associated companies |  |  | — |  |  |  | 0.4 |
Other |  |  | 6.9 |  |  |  | 6.1 |
Allowance for credit losses |  |  | (4.9 | ) |  |  | (5.7 | )
Delayed customer billings |  |  | 9.0 |  |  |  | 5.7 |
Inventories: |  |  |  |  |  |
Natural gas |  |  | 39.4 |  |  |  | 37.3 |
Materials and supplies |  |  | 19.0 |  |  |  | 18.7 |
Regulatory assets |  |  | 16.1 |  |  |  | 19.2 |
Prepayments |  |  | 7.7 |  |  |  | 10.7 |
Total Current Assets |  |  | 129.9 |  |  |  | 129.4 |
Deferred Charges and Other Assets: |  |  |  |  |  |
Regulatory assets |  |  | 650.6 |  |  |  | 642.0 |
Other |  |  | 99.2 |  |  |  | 94.8 |
Total Deferred Charges and Other Assets |  |  | 749.8 |  |  |  | 736.8 |
Total Assets |  | $ | 2,570.3 |  |  | $ | 2,496.3 |

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SPIRE ALABAMA INC.

BALANCE SHEETS (continued)

|  | September 30 |
|  | 2025 |  |  | 2024 |
CAPITALIZATION AND LIABILITIES |  |  |  |  |  |
Capitalization: |  |  |  |  |  |
Common stock and paid-in capital (par value $0.01 per share; 3,000,000 shares authorized; 1,972,052 issued and outstanding at September 30, 2025 and 2024) |  | $ | 242.9 |  |  | $ | 279.4 |
Retained earnings |  |  | 735.2 |  |  |  | 668.9 |
Total Shareholder's Equity |  |  | 978.1 |  |  |  | 948.3 |
Long-term debt (less current portion) |  |  | 711.7 |  |  |  | 711.3 |
Total Capitalization |  |  | 1,689.8 |  |  |  | 1,659.6 |
Current Liabilities: |  |  |  |  |  |
Current portion of long-term debt |  |  | — |  |  |  | 35.0 |
Notes payable – associated companies |  |  | 130.1 |  |  |  | 48.4 |
Accounts payable |  |  | 43.3 |  |  |  | 38.0 |
Accounts payable – associated companies |  |  | 5.4 |  |  |  | 6.7 |
Advance customer billings |  |  | 13.1 |  |  |  | 10.9 |
Wages and compensation accrued |  |  | 7.8 |  |  |  | 7.2 |
Customer deposits |  |  | 22.3 |  |  |  | 20.8 |
Taxes accrued |  |  | 33.1 |  |  |  | 34.8 |
Regulatory liabilities |  |  | 20.3 |  |  |  | 33.8 |
Other |  |  | 14.6 |  |  |  | 13.8 |
Total Current Liabilities |  |  | 290.0 |  |  |  | 249.4 |
Deferred Credits and Other Liabilities: |  |  |  |  |  |
Deferred income taxes |  |  | 64.1 |  |  |  | 35.9 |
Pension and postretirement benefit costs |  |  | 2.4 |  |  |  | 28.0 |
Asset retirement obligations |  |  | 470.0 |  |  |  | 468.6 |
Regulatory liabilities |  |  | 29.2 |  |  |  | 28.3 |
Other |  |  | 24.8 |  |  |  | 26.5 |
Total Deferred Credits and Other Liabilities |  |  | 590.5 |  |  |  | 587.3 |
Commitments and Contingencies (Note 16) |  |  |  |  |  |
Total Capitalization and Liabilities |  | $ | 2,570.3 |  |  | $ | 2,496.3 |

See the accompanying Notes to Financial Statements.

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SPIRE ALABAMA INC.

STATEMENTS OF SHAREHOLDER’S EQUITY

|  | Common Stock |  |  | Paid-in |  |  | Retained |  |  |  |
(Dollars in millions) |  | Shares |  |  | Par |  |  | Capital |  |  | Earnings |  |  | Total |
Balance at September 30, 2022 |  |  | 1,972,052 |  |  | $ | — |  |  | $ | 316.9 |  |  | $ | 589.1 |  |  | $ | 906.0 |
Net income |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 66.0 |  |  |  | 66.0 |
Dividends declared |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (13.0 | ) |  |  | (13.0 | )
Return of capital to Spire |  |  | — |  |  |  | — |  |  |  | (31.0 | ) |  |  | — |  |  |  | (31.0 | )
Balance at September 30, 2023 |  |  | 1,972,052 |  |  |  | — |  |  |  | 285.9 |  |  |  | 642.1 |  |  |  | 928.0 |
Net income |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 80.1 |  |  |  | 80.1 |
Dividends declared |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (53.3 | ) |  |  | (53.3 | )
Return of capital to Spire |  |  | — |  |  |  | — |  |  |  | (6.5 | ) |  |  | — |  |  |  | (6.5 | )
Balance at September 30, 2024 |  |  | 1,972,052 |  |  |  | — |  |  |  | 279.4 |  |  |  | 668.9 |  |  |  | 948.3 |
Net income |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 84.9 |  |  |  | 84.9 |
Dividends declared |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (18.6 | ) |  |  | (18.6 | )
Return of capital to Spire |  |  | — |  |  |  | — |  |  |  | (36.5 | ) |  |  | — |  |  |  | (36.5 | )
Balance at September 30, 2025 |  |  | 1,972,052 |  |  | $ | — |  |  | $ | 242.9 |  |  | $ | 735.2 |  |  | $ | 978.1 |

See the accompanying Notes to Financial Statements.

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SPIRE ALABAMA INC.

STATEMENTS OF CASH FLOWS

|  | Years Ended September 30 |
(In millions) |  | 2025 |  |  | 2024 |  |  | 2023 |
Operating Activities: |  |  |  |  |  |  |  |  |
Net Income |  | $ | 84.9 |  |  | $ | 80.1 |  |  | $ | 66.0 |
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |  |  |  |  |  |  |
Depreciation and amortization |  |  | 71.0 |  |  |  | 72.8 |  |  |  | 69.3 |
Deferred income taxes |  |  | 28.4 |  |  |  | 26.9 |  |  |  | 20.3 |
Changes in assets and liabilities: |  |  |  |  |  |  |  |  |
Accounts receivable |  |  | (0.5 | ) |  |  | 8.0 |  |  |  | 27.1 |
Inventories |  |  | (2.4 | ) |  |  | 15.6 |  |  |  | 17.2 |
Regulatory assets and liabilities |  |  | 2.7 |  |  |  | 49.3 |  |  |  | (49.5 | )
Accounts payable |  |  | 8.8 |  |  |  | 2.4 |  |  |  | (42.3 | )
Delayed/advance customer billings |  |  | (1.1 | ) |  |  | 0.7 |  |  |  | (0.6 | )
Taxes accrued |  |  | (1.7 | ) |  |  | 0.3 |  |  |  | 3.3 |
Other assets and liabilities |  |  | (38.5 | ) |  |  | (8.6 | ) |  |  | 18.7 |
Other |  |  | 0.9 |  |  |  | 0.4 |  |  |  | 0.4 |
Net cash provided by operating activities |  |  | 152.5 |  |  |  | 247.9 |  |  |  | 129.9 |
Investing Activities: |  |  |  |  |  |  |  |  |
Capital expenditures |  |  | (144.2 | ) |  |  | (112.8 | ) |  |  | (117.6 | )
Other |  |  | 0.9 |  |  |  | 0.8 |  |  |  | 1.3 |
Net cash used in investing activities |  |  | (143.3 | ) |  |  | (112.0 | ) |  |  | (116.3 | )
Financing Activities: |  |  |  |  |  |  |  |  |
Issuance of long-term debt |  |  | — |  |  |  | — |  |  |  | 175.0 |
Repayment of long-term debt |  |  | (35.0 | ) |  |  | — |  |  |  | — |
Borrowings (Repayments to) from Spire, net |  |  | 81.7 |  |  |  | (75.7 | ) |  |  | (136.8 | )
Return of capital to Spire |  |  | (36.5 | ) |  |  | (6.5 | ) |  |  | (31.0 | )
Dividends paid |  |  | (18.6 | ) |  |  | (53.4 | ) |  |  | (21.0 | )
Other |  |  | (0.4 | ) |  |  | — |  |  |  | (1.0 | )
Net cash used in financing activities |  |  | (8.8 | ) |  |  | (135.6 | ) |  |  | (14.8 | )
Net Increase (Decrease) in Cash and Cash Equivalents |  |  | 0.4 |  |  |  | 0.3 |  |  |  | (1.2 | )
Cash and Cash Equivalents at Beginning of Year |  |  | 1.5 |  |  |  | 1.2 |  |  |  | 2.4 |
Cash and Cash Equivalents at End of Year |  | $ | 1.9 |  |  | $ | 1.5 |  |  | $ | 1.2 |
Supplemental disclosure of cash paid for: |  |  |  |  |  |  |  |  |
Interest, net of amounts capitalized |  | $ | (28.9 | ) |  | $ | (32.9 | ) |  | $ | (30.1 | )
Income taxes |  |  | — |  |  |  | — |  |  |  | — |

See the accompanying Notes to Financial Statements.

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SPIRE INC., SPIRE MISSOURI INC., AND SPIRE ALABAMA INC.

NOTES TO FINANCIAL STATEMENTS

(Dollars in millions, except per share, per unit and per gallon amounts)

1. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

BASIS OF PRESENTATION – These notes are an integral part of the accompanying audited financial statements of Spire Inc. (“Spire” or the “Company”) presented on a consolidated basis, Spire Missouri Inc. (“Spire Missouri”) and Spire Alabama Inc. (“Spire Alabama”). Spire Missouri, Spire Alabama and Spire EnergySouth Inc. (“Spire EnergySouth”) are wholly owned subsidiaries of Spire. Spire Missouri, Spire Alabama and the subsidiaries of Spire EnergySouth (Spire Gulf Inc. and Spire Mississippi Inc.) are collectively referred to as the “Utilities.” Unless otherwise indicated, references to years herein are references to the fiscal years ending September 30 for the Company and its subsidiaries.

The accompanying audited financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (GAAP). The consolidated financial position, results of operations and cash flows of Spire include the accounts of the Company and all its subsidiaries. Transactions and balances between consolidated entities have been eliminated from the consolidated financial statements of Spire. In compliance with GAAP, transactions between Spire Missouri and Spire Alabama and their affiliates, as well as intercompany balances on their balance sheets, have not been eliminated from their separate financial statements.

NATURE OF OPERATIONS – Spire has three reportable segments: Gas Utility, Gas Marketing, and Midstream. The Gas Utility segment consists of the regulated natural gas distribution operations of the Company and is the core business segment of Spire in terms of revenue and earnings. The Gas Utility segment is comprised of the operations of: Spire Missouri, serving St. Louis, Kansas City, and other areas in Missouri; Spire Alabama, serving central and northern Alabama; and the subsidiaries of Spire EnergySouth, serving the Mobile, Alabama area and south-central Mississippi. The Gas Marketing segment includes Spire’s largest gas-related business, Spire Marketing Inc. (“Spire Marketing”), which provides non-regulated natural gas services throughout the United States (U.S.). The Midstream segment includes Spire Storage, Spire STL Pipeline and Spire MoGas Pipeline, which are subsidiaries engaged in the storage and transportation of natural gas. The activities of the Company’s other subsidiaries are reported as Other and are described in Note 14, Segment Information. Spire Missouri and Spire Alabama each have a single reportable segment.

USE OF ESTIMATES – The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting periods. Actual results could differ from those estimates.

SYSTEM OF ACCOUNTS – The accounts of the Utilities are maintained in accordance with the Uniform System of Accounts prescribed by the applicable state public service commissions, which systems substantially conform to those prescribed by FERC.

REGULATED OPERATIONS – The Utilities account for their regulated operations in accordance with Financial Accounting Standards Board (FASB) Accounting Standards Codification (ASC) Topic 980, Regulated Operations. This topic sets forth the application of GAAP for those companies whose rates are established by or are subject to approval by an independent third-party regulator. The provisions of this accounting guidance require, among other things, that financial statements of a regulated enterprise reflect the actions of regulators, where appropriate. These actions may result in the recognition of revenues and expenses in time periods that are different than non-regulated enterprises. When this occurs, costs are deferred as assets in the balance sheet (regulatory assets) and recorded as expenses when those amounts are reflected in rates. In addition, regulators can impose liabilities upon a regulated company for amounts previously collected from customers and for recovery of costs that are expected to be incurred in the future (regulatory liabilities). Management believes that the current regulatory environment supports the continued use of these regulatory accounting principles and that all regulatory assets and regulatory liabilities are recoverable or refundable through the regulatory process. See additional discussion of regulated operations in Note 15, Regulatory Matters.

PROPERTY, PLANT, AND EQUIPMENT –

Utility Plant – Utility plant is comprised primarily of our utility distribution assets and amounts are stated at original cost. The cost of additions to utility plant includes contracted work, direct labor and materials, allocable overheads and an allowance for funds used during construction. The costs of units of property retired, replaced or renewed are removed from utility plant and are charged to accumulated depreciation. Maintenance and repairs of property and replacement and renewal of items determined to be less than units of property are charged to maintenance expenses. Utility plant includes $268.3 and $143.2 of construction work-in-process ("CWIP") for 2025 and 2024, respectively.

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Utility plant is depreciated using the composite method on a straight-line basis over the estimated service lives of the various classes of property at rates approved by the applicable regulatory commission. For Spire Missouri and for Spire Alabama, the annual depreciation and amortization expense in fiscal years 2025, 2024 and 2023 averaged approximately 3% of the original cost of depreciable and amortizable property.

Non-utility Property – Non-utility property is comprised primarily of our storage facilities, transportation pipelines and other assets. These assets are recorded at the original cost of acquisition or construction, which includes material, labor, contractor services and, for FERC-regulated projects, an allowance for funds used during construction. Repairs, replacements and renewals of items of property determined to be less than a unit of property or that do not increase the property’s life or functionality are charged to maintenance expense. Upon retirement or sale of non-utility property, the original cost and related accumulated depreciation are removed from the accounts and any gain or loss is included in the income statements. Costs related to software developed or obtained for internal use are capitalized and amortized on a straight-line basis over the estimated useful life of the related software. If software is retired prior to being fully amortized, the difference is recorded as a loss in the income statements unless the unamortized balance is expected to be recovered through a regulatory deferral mechanism. Depreciation expense for non-utility property is recorded straight-line over the life of the asset. Depreciation expense for non-utility property was $32.7, $25.8, and $20.6 for 2025, 2024, and 2023, respectively. Non-utility property is as follows:

|  | 2025 |  |  | 2024 |
Storage |  | $ | 453.8 |  |  | $ | 382.0 |
Pipeline |  |  | 498.3 |  |  |  | 492.4 |
All Other Property* |  |  | 184.5 |  |  |  | 177.7 |
Total property, plant and equipment |  | $ | 1,136.6 |  |  | $ | 1,052.1 |
Accumulated depreciation |  |  | (129.4 | ) |  |  | (96.8 | )
Property, plant and equipment, net |  | $ | 1,007.2 |  |  | $ | 955.3 |
* Primarily consisting of computer software and hardware |  |  |  |  |  |

Accrued Capital Expenditures – Accrued capital expenditures, shown in the following table, are excluded from capital expenditures in the statements of cash flows until paid.

September 30 |  | 2025 |  |  | 2024 |  |  | 2023 |
Spire |  | $ | 82.5 |  |  | $ | 116.5 |  |  | $ | 104.3 |
Spire Missouri |  |  | 61.8 |  |  |  | 67.4 |  |  |  | 56.5 |
Spire Alabama |  |  | 9.5 |  |  |  | 14.1 |  |  |  | 4.6 |

ASSET RETIREMENT OBLIGATIONS – Spire, Spire Missouri and Spire Alabama record legal obligations associated with the retirement of long-lived assets in the period in which the obligations are incurred, if sufficient information exists to reasonably estimate the fair value of the obligations. Obligations are recorded as both a cost of the related long-lived asset and as a corresponding liability. Subsequently, the asset retirement costs are depreciated over the life of the asset and the asset retirement obligations are accreted to the expected settlement amounts. Spire, Spire Missouri and Spire Alabama record asset retirement obligations associated with certain safety requirements to purge and seal gas distribution mains upon retirement, the plugging and abandonment of storage wells and other storage facilities, specific service line obligations, and certain removal and disposal obligations related to components of Spire Missouri’s, Spire Alabama’s and Spire Gulf’s distribution systems and general plant. Asset retirement obligations recorded by Spire’s other subsidiaries are not material. As authorized by the MoPSC and the APSC, Spire Missouri, Spire Alabama and Spire Gulf accrue future asset removal costs associated with their property, plant and equipment even if a legal obligation does not exist. Such accruals are provided for through depreciation expense and are recorded with corresponding credits to regulatory liabilities or regulatory assets. When those utilities retire depreciable utility plant and equipment, they charge the associated original costs to accumulated depreciation and amortization, and any related removal costs incurred are charged to regulatory liabilities or regulatory assets. The difference between removal costs recognized in depreciation rates and the accretion expense and depreciation expense recognized for financial reporting purposes is a timing difference between recovery of these costs in rates and their recognition for financial reporting purposes. Accordingly, these differences are deferred as regulatory liabilities or regulatory assets. In the rate setting process, the regulatory liabilities or regulatory assets are excluded from the rate base upon which those utilities have the opportunity to earn their allowed rates of return.

The following table presents a reconciliation of the beginning and ending balances of asset retirement obligations at September 30, as reported in the balance sheets.

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|  | Spire |  |  | Spire Missouri |  |  | Spire Alabama |
|  | 2025 |  |  | 2024 |  |  | 2025 |  |  | 2024 |  |  | 2025 |  |  | 2024 |
Asset retirement obligations, beginning of year |  | $ | 579.9 |  |  | $ | 577.4 |  |  | $ | 95.7 |  |  | $ | 111.1 |  |  | $ | 468.6 |  |  | $ | 451.0 |
Liabilities incurred during the period |  |  | 3.1 |  |  |  | 2.5 |  |  |  | 0.4 |  |  |  | 0.4 |  |  |  | 2.2 |  |  |  | 1.4 |
Liabilities settled during the period |  |  | (5.1 | ) |  |  | (6.5 | ) |  |  | (2.8 | ) |  |  | (2.9 | ) |  |  | (0.9 | ) |  |  | (1.3 | )
Accretion |  |  | 25.0 |  |  |  | 24.8 |  |  |  | 3.9 |  |  |  | 4.5 |  |  |  | 20.4 |  |  |  | 19.6 |
Revisions in estimated cash flows |  |  | (19.7 | ) |  |  | (18.3 | ) |  |  | (1.7 | ) |  |  | (17.4 | ) |  |  | (20.3 | ) |  |  | (2.1 | )
Asset retirement obligations, end of year |  | $ | 583.2 |  |  | $ | 579.9 |  |  | $ | 95.5 |  |  | $ | 95.7 |  |  | $ | 470.0 |  |  | $ | 468.6 |

NATURAL GAS AND PROPANE GAS – For Spire Missouri’s eastern region, inventory of natural gas in storage is priced on a last in, first out (LIFO) basis and inventory of propane gas in storage is priced on a first in, first out (FIFO) basis. For the rest of the Gas Utility segment, inventory of natural gas in storage is priced on the weighted average cost basis. The replacement cost of Spire Missouri’s natural gas for current use in eastern Missouri at September 30, 2025 and 2024 was less than the LIFO cost by $21.3 and $27.3, respectively. The carrying value of the Utilities’ inventory is never adjusted to a lower net realizable value or market value because, pursuant to PGA clauses or a GSA rider, actual gas costs are recovered in customer rates. Natural gas and propane gas storage inventory in Spire’s other segments is recorded at the lower of average cost or net realizable value.

GOODWILL – Spire’s acquisitions were accounted for using business combination accounting. Under this method, the purchase price paid by the acquirer is allocated to the assets acquired and liabilities assumed as of the acquisition date based on their fair value. Goodwill is measured as the excess of the acquisition-date fair value of the consideration transferred over the amount of acquisition-date identifiable assets acquired net of assumed liabilities. At September 30, 2025, goodwill included in Spire’s Gas Utility, Gas Marketing, and Midstream segments was $210.2, zero, and zero, respectively, with the remainder held at the corporate level. Goodwill amounts have not changed since fiscal 2017, and there are no accumulated impairment losses. Spire and Spire Missouri evaluate goodwill for impairment as of July 1 of each year, or more frequently if events and circumstances indicate that goodwill might be impaired. At each test date, the assessments concluded that goodwill was not impaired. The Company updated the assessments as of September 30, 2025, determining that it remained more likely than not that the fair value of each reporting unit exceeded its carrying value.

IMPAIRMENT OF LONG-LIVED ASSETS – Long-lived assets classified as held and used are evaluated for impairment when events or changes in circumstances indicate that the carrying value of such assets may not be recoverable. Whether impairment has occurred is determined by comparing the estimated undiscounted cash flows attributable to the assets with the carrying value of the assets. If the carrying value exceeds the undiscounted cash flows, the Company recognizes an impairment charge equal to the amount of the carrying value that exceeds the estimated fair value of the assets. In the period in which the Company determines an asset meets held-for-sale criteria, an impairment charge is recorded to the extent the book value exceeds its fair value less cost to sell.

DERIVATIVES – In the course of their business, certain subsidiaries of Spire enter into commitments associated with the purchase or sale of natural gas. Certain of their derivative natural gas contracts are designated as normal purchases or normal sales and, as such, are excluded from the scope of FASB ASC Topic 815, Derivatives and Hedging. Those contracts are accounted for as executory contracts and recorded on an accrual basis. Revenues and expenses from such contracts are recorded gross. Contracts not designated as normal purchases or normal sales are recorded as derivatives with changes in fair value recognized in earnings in the periods prior to physical delivery. Certain of Spire Marketing’s wholesale purchase and sale transactions are classified as trading activities for financial reporting purposes, with income and expenses presented on a net basis in natural gas expenses in the Consolidated Statements of Income. Spire also enters into cash flow hedges through execution of interest rate swap contracts to protect itself against adverse movements in interest rates. In the first quarter of fiscal 2024, considering changes in debt issuance strategy due to the interest rate environment, Spire management determined it was probable the anticipated issuance of certain debt, and therefore the hedged forecasted interest payments, would not occur. The related swap was settled, hedge accounting was discontinued, and amounts previously deferred in “Accumulated other comprehensive income” were reclassified to earnings, such that the entire realized gain of $8.2 was included in “Other income” for Spire Inc. in the quarter ended December 31, 2023. Refer to Note 10, Derivative Instruments and Hedging Activities, for more information about derivatives.

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INCOME TAXES – Spire and its subsidiaries account for income taxes under the asset and liability method. Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amount of existing assets and liabilities and the respective tax basis and for tax credit carryforwards. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be realized or settled. The effects on deferred tax assets and liabilities of a change in enacted tax rates is recognized in income or loss for non-regulated operations, and in a regulatory asset or regulatory liability for regulated operations. A valuation allowance is established when it is more likely than not that some portion or all of the deferred tax assets will not be realized.

The Company accounts for uncertain tax positions in accordance with authoritative guidance. The authoritative guidance addresses the determination of whether tax benefits claimed, or expected to be claimed, on a tax return should be recorded in the financial statements. Spire may recognize the tax benefit from an uncertain tax position only if it is more likely than not that the position will be sustained upon examination by the taxing authority, based on the technical merits of the position. Tax-related interest and penalties, if any, are classified as a liability on the balance sheets. For additional information on the accounting for income taxes, refer to Note 12, Income Taxes.

CASH, CASH EQUIVALENTS, AND RESTRICTED CASH – All highly liquid debt instruments purchased with original maturities of three months or less are considered to be cash equivalents. Such instruments are carried at cost, which approximates market value. Outstanding checks on the Company’s and Utilities’ bank accounts in excess of funds on deposit create book overdrafts (which are funded at the time checks are presented for payment) and are classified as Other in the Current Liabilities section of the balance sheets. Changes in book overdrafts are reflected as Operating Activities in the statements of cash flows.

In Spire’s statements of cash flows, total Cash, Cash Equivalents, and Restricted Cash included $35.5 and $30.4 of restricted cash reported in “Other Investments” on the Company’s balance sheet as of September 30, 2025 and 2024, respectively (in addition to amounts shown as “Cash and cash equivalents”). This restricted cash has been segregated and invested in debt securities in trust accounts based on collateral requirements for reinsurance at Spire’s risk management company.

NATURAL GAS RECEIVABLE – Spire Marketing enters into natural gas transactions with natural gas pipeline and storage companies known as park and loan arrangements. Under the terms of the arrangements, Spire Marketing purchases natural gas from a third party and delivers that natural gas to the pipeline or storage company for the right to receive the same quantity of natural gas from that company at the same location in a future period. These arrangements are accounted for as non-monetary transactions under GAAP and are recorded at the carrying amount. As such, natural gas receivables are reflected in “Other” current assets on the Consolidated Balance Sheets at cost, which includes related fees associated with the transactions. In the period that the natural gas is returned to Spire Marketing, concurrent with the sale of the natural gas to a third party, the related natural gas receivable is expensed in the Consolidated Statements of Income. In conjunction with these transactions, Spire Marketing usually enters into New York Mercantile Exchange (NYMEX) and Intercontinental Exchange (ICE) natural gas futures, options, and swap contracts or fixed price sales agreements to protect against market changes in future sales prices.

EARNINGS PER COMMON SHARE – GAAP requires dual presentation of basic and diluted earnings per share (EPS). EPS is computed using the two-class method, which is an earnings allocation method for computing EPS that treats a participating security as having rights to earnings that would otherwise have been available to common shareholders. Certain of the Company’s stock-based compensation awards pay non-forfeitable dividends to the participants during the vesting period and, as such, are deemed participating securities. Basic EPS is computed by dividing net income available to common shareholders by the weighted average number of common shares outstanding during the period. Diluted EPS is computed by dividing net income available to common shareholders by the weighted average number of common shares outstanding that are increased for additional shares that would be outstanding if potentially dilutive securities were converted to common shares, pursuant to the treasury stock method. Shares attributable to equity units, common stock forward purchase contracts, non-participating performance-contingent restricted stock awards, and time-vested restricted stock/units are excluded from the calculation of diluted earnings per share if the effect would be antidilutive. Shares attributable to non-participating performance-contingent restricted stock awards are only included in the calculation of diluted earnings per share to the extent the underlying performance and/or market conditions are satisfied (a) prior to the end of the reporting period or (b) would be satisfied if the end of the reporting period were the end of the related contingency period and the result would be dilutive. The Company’s EPS computations are presented in Note 4, Earnings Per Common Share.

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TRANSACTIONS WITH AFFILIATES – Transactions between affiliates of the Company have been eliminated from the consolidated financial statements of Spire. Spire Missouri and Spire Alabama borrowed funds from the Company and incurred related interest, as reflected in their separate financial statements, and they participated in normal intercompany shared services transactions. In addition, Spire Missouri’s and Spire Alabama’s other transactions with affiliates included:

|  | Spire Missouri |  |  | Spire Alabama |
|  | 2025 |  |  | 2024 |  |  | 2023 |  |  | 2025 |  |  | 2024 |  |  | 2023 |
Natural gas purchases from Spire Marketing |  | $ | 23.8 |  |  | $ | 13.9 |  |  | $ | 57.4 |  |  | $ | 13.9 |  |  | $ | 6.7 |  |  | $ | 4.7 |
Natural gas sales to Spire Marketing |  |  | 0.1 |  |  |  | 1.7 |  |  |  | 0.4 |  |  |  | — |  |  |  | — |  |  |  | — |
Transportation services from Spire STL Pipeline LLC |  |  | 32.0 |  |  |  | 32.5 |  |  |  | 32.0 |  |  |  | — |  |  |  | — |  |  |  | — |
Natural gas storage services from Spire Storage Salt Plains LLC |  |  | — |  |  |  | 0.7 |  |  |  | 0.7 |  |  |  | — |  |  |  | — |  |  |  | — |
Transportation services from Spire MoGas Pipeline LLC |  |  | 7.0 |  |  |  | 4.8 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |

ACCOUNTS RECEIVABLE AND ALLOWANCE FOR CREDIT LOSSES – Trade accounts receivable are recorded at the amounts due from customers, including unbilled amounts. Accounts receivable are written off when they are deemed to be uncollectible. An allowance for expected credit losses is estimated and updated based on relevant data and trends such as accounts receivable aging, historical write-off experience, current write-off trends, economic conditions, and the impact of weather and availability of customer payment assistance on collection trends. For the Utilities, net write-offs as a percentage of revenue has historically been the best predictor of base net write-off experience over time. Management judgment is applied in the development of the allowance due to the complexity of variables and subjective nature of certain relevant factors. The accounts receivable of Spire’s non-utility businesses are evaluated separately from those of the Utilities. The allowance for credit losses for those other businesses is based on a continuous evaluation of the individual counterparty risk and is not significant for the periods presented. Activity in the allowance for credit losses is shown in the following table.

|  | Spire |  |  | Spire Missouri |  |  | Spire Alabama |
|  | 2025 |  |  | 2024 |  |  | 2023 |  |  | 2025 |  |  | 2024 |  |  | 2023 |  |  | 2025 |  |  | 2024 |  |  | 2023 |
Allowance at beginning of year |  | $ | 31.4 |  |  | $ | 32.5 |  |  | $ | 31.9 |  |  | $ | 24.9 |  |  | $ | 26.2 |  |  | $ | 24.9 |  |  | $ | 5.7 |  |  | $ | 5.7 |  |  | $ | 6.3 |
Provision for expected credit losses |  |  | 19.6 |  |  |  | 23.0 |  |  |  | 16.6 |  |  |  | 14.8 |  |  |  | 19.0 |  |  |  | 13.3 |  |  |  | 4.0 |  |  |  | 3.2 |  |  |  | 2.6 |
Write-offs, net of recoveries |  |  | (22.2 | ) |  |  | (24.1 | ) |  |  | (16.0 | ) |  |  | (16.7 | ) |  |  | (20.3 | ) |  |  | (12.0 | ) |  |  | (4.8 | ) |  |  | (3.2 | ) |  |  | (3.2 | )
Allowance at end of year |  | $ | 28.8 |  |  | $ | 31.4 |  |  | $ | 32.5 |  |  | $ | 23.0 |  |  | $ | 24.9 |  |  | $ | 26.2 |  |  | $ | 4.9 |  |  | $ | 5.7 |  |  | $ | 5.7 |

FINANCE RECEIVABLES – Spire Alabama finances third party contractor sales of merchandise including gas furnaces and appliances. At September 30, 2025 and 2024, Spire Alabama’s finance receivable totaled approximately $5.4 and $5.9, respectively. Financing is available only to qualified customers who meet creditworthiness thresholds for customer payment history and external agency credit reports. Spire Alabama relies upon ongoing payments as the primary indicator of credit quality during the term of each contract. The allowance for credit losses is recognized using an estimate of write-off percentages based on historical experience. Delinquent accounts are evaluated on a case-by-case basis and, absent evidence of debt repayment, after 90 days are due in full and assigned to a third-party collection agency. The remaining finance receivable is written off approximately 12 months after being assigned to the third-party collection agency. Spire Alabama had finance receivables past due 90 days or more of $0.4 and $0.4 at September 30, 2025 and 2024, respectively.

GROUP MEDICAL AND WORKERS’ COMPENSATION RESERVES – The Company self-insures its group medical and workers’ compensation costs and carries stop-loss coverage in relation to medical claims and workers’ compensation claims. Reserves for amounts incurred but not reported are established based on historical cost levels and lags between occurrences and reporting.

FAIR VALUE MEASUREMENTS – Certain assets and liabilities are recognized or disclosed at fair value, which is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date (exit price). GAAP establishes a fair value hierarchy that prioritizes the inputs used to measure fair value.

The levels of the hierarchy are described below:

•
Level 1 – Unadjusted quoted prices in active markets for identical assets or liabilities.

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•
Level 2 – Pricing inputs other than quoted prices included within Level 1, which are either directly or indirectly observable for the asset or liability as of the reporting date. These inputs are derived principally from, or corroborated by, observable market data.
•
Level 3 – Pricing that is based upon inputs that are generally unobservable that are based on the best information available and reflect management’s assumptions about how market participants would price the asset or liability.

Assessment of the significance of a particular input to the fair value measurements may require judgment and may affect the valuation of the asset or liability and its placement within the fair value hierarchy. Additional information about fair value measurements is provided in Note 8, Fair Value of Financial Instruments, Note 9, Fair Value Measurements, and Note 13, Pension Plans and Other Postretirement Benefits.

STOCK-BASED COMPENSATION – The Company accounts for share-based compensation arrangements in accordance with ASC Topic 718, Compensation – Stock Compensation. The Company measures stock-based compensation awards at fair value at the date of grant and recognizes the compensation cost of the awards over the requisite service period. Forfeitures are recognized in the period they occur. Refer to Note 3, Stock-Based Compensation, for further discussion of the accounting for the Company’s stock-based compensation plans.

NEW ACCOUNTING PRONOUNCEMENTS - On September 30, 2025, the Companies adopted ASU 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures (“ASU 2023-07”), which updates segment disclosure requirements through enhanced disclosures around significant segment expenses. The Companies applied the provision retrospectively to all periods presented for each reportable segment as further described. Refer to Note 14, for further discussion of segment reporting.

In November 2024, the FASB issued ASU 2024-03, Income Statement—Reporting Comprehensive Income (Topic 220): Expense Disaggregation Disclosures (“ASU 2024-03”). This ASU improves disclosure of a public business entity’s expense by requiring disaggregated disclosure of expenses in commonly presented expense captions. ASU 2024-03 is effective for annual periods beginning after December 15, 2026, and for interim periods beginning after December 15, 2027. Early adoption is permitted. The Companies are currently evaluating the impact of this ASU on their respective consolidated financial statements.

In December 2023, the FASB issued ASU 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures (“ASU 2023-09”). This ASU enhances the transparency of income tax disclosures related to rate reconciliation and income taxes. ASU 2023-09 is effective for annual periods beginning after December 15, 2024. Early adoption is permitted. The Companies are currently evaluating the impact of this ASU on their respective consolidated financial statements.

Management believes that all other recently adopted and recently issued accounting standards that are not yet effective will not have a material impact on the Companies financial position, results of operations or cash flows upon adoption.

2. REVENUE

The following tables show revenue disaggregated by source and customer type.

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|  | 2025 |  |  | 2024 |  |  | 2023 |
Spire |  |  |  |  |  |  |  |  |
Gas Utility: |  |  |  |  |  |  |  |  |
Residential |  | $ | 1,462.6 |  |  | $ | 1,617.4 |  |  | $ | 1,648.5 |
Commercial & industrial |  |  | 501.3 |  |  |  | 581.0 |  |  |  | 606.0 |
Transportation |  |  | 133.6 |  |  |  | 130.0 |  |  |  | 121.6 |
Off-system & other incentive |  |  | 65.3 |  |  |  | 37.0 |  |  |  | 30.0 |
Other customer revenue |  |  | 24.4 |  |  |  | 21.2 |  |  |  | 16.1 |
Total revenue from contracts with customers |  |  | 2,187.2 |  |  |  | 2,386.6 |  |  |  | 2,422.2 |
Changes in accrued revenue under alternative revenue programs |  |  | 20.3 |  |  |  | 51.3 |  |  |  | 34.7 |
Total Gas Utility operating revenues |  |  | 2,207.5 |  |  |  | 2,437.9 |  |  |  | 2,456.9 |
Gas Marketing |  |  | 157.2 |  |  |  | 99.2 |  |  |  | 179.1 |
Midstream |  |  | 155.5 |  |  |  | 100.7 |  |  |  | 66.1 |
Other |  |  | 20.6 |  |  |  | 17.6 |  |  |  | 16.7 |
Total before eliminations |  |  | 2,540.8 |  |  |  | 2,655.4 |  |  |  | 2,718.8 |
Intercompany eliminations |  |  | (64.4 | ) |  |  | (62.4 | ) |  |  | (52.5 | )
Total Operating Revenues |  | $ | 2,476.4 |  |  | $ | 2,593.0 |  |  | $ | 2,666.3 |
Spire Missouri |  |  |  |  |  |  |  |  |
Residential |  | $ | 1,092.1 |  |  | $ | 1,217.7 |  |  | $ | 1,261.3 |
Commercial & industrial |  |  | 326.0 |  |  |  | 390.9 |  |  |  | 411.9 |
Transportation |  |  | 35.9 |  |  |  | 34.1 |  |  |  | 33.2 |
Off-system & other incentive |  |  | 51.9 |  |  |  | 28.8 |  |  |  | 20.1 |
Other customer revenue |  |  | 14.0 |  |  |  | 14.9 |  |  |  | 12.5 |
Total revenue from contracts with customers |  |  | 1,519.9 |  |  |  | 1,686.4 |  |  |  | 1,739.0 |
Changes in accrued revenue under alternative revenue programs |  |  | 24.2 |  |  |  | 51.0 |  |  |  | 23.9 |
Total Operating Revenues |  | $ | 1,544.1 |  |  | $ | 1,737.4 |  |  | $ | 1,762.9 |
Spire Alabama |  |  |  |  |  |  |  |  |
Residential |  | $ | 307.5 |  |  | $ | 336.4 |  |  | $ | 322.9 |
Commercial & industrial |  |  | 134.5 |  |  |  | 149.5 |  |  |  | 150.4 |
Transportation |  |  | 87.3 |  |  |  | 85.1 |  |  |  | 77.6 |
Off-system & other incentive |  |  | 13.4 |  |  |  | 8.1 |  |  |  | 9.9 |
Other customer revenue |  |  | 6.3 |  |  |  | (0.4 | ) |  |  | 3.6 |
Total revenue from contracts with customers |  |  | 549.0 |  |  |  | 578.7 |  |  |  | 564.4 |
Changes in accrued revenue under alternative revenue programs |  |  | (3.8 | ) |  |  | 0.2 |  |  |  | 6.7 |
Total Operating Revenues |  | $ | 545.2 |  |  | $ | 578.9 |  |  | $ | 571.1 |

The Utilities sell natural gas to residential and other customers. The sale of natural gas is governed by the various state utility commissions, which set rates, charges, and terms and conditions of service, collectively included in a “tariff.” The performance obligation, which relates to the promise to provide natural gas, is satisfied over time as the customer simultaneously receives and consumes the natural gas, and revenue is recognized accordingly.

From time to time, the Utilities will sell natural gas to other customers outside its normal customer base or designated service territory. Off-system sales agreements with customers are entered into on an ad-hoc basis for the sale of a specific volume of gas at a specific delivery point at an agreed upon rate. Performance obligations associated with off-system sales are satisfied, and revenue is recognized, at the point in time when the agreed upon volume of natural gas is delivered, and title is transferred, in accordance with the contract terms.

The Utilities’ transportation revenue relates to the promise to transport the specified quantities of natural gas at tariff rates. This performance obligation is satisfied over time as the gas is transported, and revenue is recognized as invoiced monthly.

The Utilities have alternative revenue programs (ARPs), which represent an agreement between the utility and its regulator, currently consisting of decoupling mechanisms (also known as weather normalization adjustments) and incentive programs (primarily Alabama’s Cost Control Measure). When the criteria to recognize additional (or reduced) revenue from ARPs have been met, the Utilities establish a regulatory asset (or liability). When amounts previously recognized for ARPs are billed, the Utilities reduce the regulatory asset (or liability) and increase (or decrease) accounts receivable. Billed amounts, which are part of the overall tariff paid by customers, are included in revenue from contracts with customers, while the change in the related regulatory asset or liability is presented as revenue from ARPs. Depending on whether the beginning accrued ARP balance was a regulatory asset or liability and depending on the size and direction of the current period accrual, the amount presented as revenue from ARPs could be negative.

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The Utilities read meters and bill customers on monthly cycles. Spire Missouri, Spire Gulf and Spire Mississippi record their gas utility revenues from gas sales and transportation services on an accrual basis that includes estimated amounts for gas delivered but not yet billed. The accruals for unbilled revenues are reversed in the subsequent accounting period when meters are actually read and customers are billed. Spire Alabama records natural gas distribution revenues in accordance with the tariff established by the APSC. Unbilled revenue is accrued in an amount equal to the related gas cost, as profit margin is not considered earned until billed. The Utilities, including Spire Missouri and Spire Alabama, have elected to apply the “right to invoice” practical expedient, recognizing revenue for volumes delivered for which they have a right to invoice as that amount corresponds with the value to the customer.

Gas Marketing’s contracts are derivatives. Wholesale contracts (with producers, municipalities, and utility companies) are subject to derivative accounting. Retail contracts (with large commercial and industrial customers) are designated as “normal purchase, normal sale” arrangements and are therefore accounted for as revenue from contracts with customers. The performance obligation is satisfied upon the transfer of control of natural gas to the customer, and revenue is recognized as invoiced monthly. Revenue is recognized monthly based on amounts invoiced using the “right to invoice” practical expedient.

Midstream revenues are primarily derived from firm transportation or storage service agreements, which provide customers with guaranteed access to natural gas transportation capacity to transport gas between receipt and delivery points or storage capacity and related injection and withdrawal rights. These agreements include a single performance obligation—the stand-ready service to provide firm transportation or storage capacity throughout the contract term, which is satisfied over time. The transaction price consists of fixed fees, which represents the customer’s access to transportation or storage capacity, and variable charges, which are based on volumes that are shipped, injected or withdrawn. Revenue is recognized using the right to invoice practical expedient based on amounts invoiced to the customer each month.

Payments are generally required within 30 days of billing, and contracts generally do not have a significant financing component. Spire’s revenues are not subject to significant returns, refunds, or warranty obligations.

Disclosures about remaining performance obligations are not required because either contracts have an original expected duration of one year or less, or revenue is recognized under the right to invoice practical expedient, or both.

Sales taxes imposed on applicable Spire Alabama and Spire Missouri sales are billed to customers. These amounts are not recorded in the statements of income but are recorded as tax collections payable and included in the “Other” line of the Current Liabilities section of the balance sheets.

Gross receipts taxes associated with the Company’s natural gas utility services are imposed on the Company, Spire Missouri, and Spire Alabama and billed to its customers. The expense amounts (shown in the table below) are reported gross in the “Taxes, other than income taxes” line in the statements of income, and corresponding revenues are reported in “Operating Revenues.”

|  | 2025 |  |  | 2024 |  |  | 2023 |
Spire |  | $ | 115.7 |  |  | $ | 128.2 |  |  | $ | 131.8 |
Spire Missouri |  |  | 82.9 |  |  |  | 93.1 |  |  |  | 96.7 |
Spire Alabama |  |  | 27.9 |  |  |  | 30.1 |  |  |  | 29.9 |

3. STOCK-BASED COMPENSATION

The Spire 2015 Equity Incentive Plan (EIP) was approved by shareholders of Spire on January 29, 2015 and amended on November 9, 2018. The 2015 EIP was replaced by the 2025 Equity Incentive Plan (EIP), which was approved by shareholders on January 30, 2025. The purpose of the EIP is to encourage directors, officers, and key employees of the Company and its subsidiaries to contribute to the Company’s success and align their interests with that of shareholders. To accomplish this purpose, the Compensation and Human Resources Committee (“Committee”) of Spire’s Board of Directors (the “Board”) may grant awards under the EIP that may be earned by achieving performance objectives and/or other criteria as determined by the Committee. Under the terms of the EIP, officers and employees of the Company and its subsidiaries, as determined by the Committee, are eligible to be selected for awards. The EIP provides for restricted stock, restricted stock units, qualified and non-qualified stock options, stock appreciation rights, and performance shares payable in stock, cash, or a combination of both. The EIP generally provides a minimum vesting period of at least three years for each type of award, with pro rata vesting permitted during the minimum three-year vesting period. The maximum number of shares reserved for issuance under the EIP is 1,500,000.

The Company allows participants in the EIP the ability to defer a portion or all of their award. As of September 30, 2025, a total of 79,815 share equivalents (at target payout) have been deferred by participants. Such units are included in the data presented below. After the required holding period, deferred awards are ultimately paid in cash rather than in shares of

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stock. Upon vesting, the Company issues new shares to satisfy awards that are not deferred. Effective with the fiscal 2026 grants, deferral of awards will no longer be an option available to grantees.

Restricted Stock Awards

During fiscal 2025, the Company granted 103,780 performance-contingent restricted share units to executive officers and key employees at a weighted average grant date fair value of $76.52 per share. This number represents the target shares that can be earned pursuant to the terms of the awards. The share units have a performance period ending September 30, 2027. While the participants have no interim voting rights on these share units, dividends accrue during the performance period and are paid to the participants upon vesting but are subject to forfeiture if the underlying share units do not vest.

The number of share units that will ultimately vest is dependent upon the attainment of certain levels of earnings, as well as the Company’s level of total shareholder return (TSR) during the performance period relative to a comparator group of peer companies. This TSR provision is considered a market condition under GAAP and is discussed further below. The maximum amount of shares or share equivalents that can be earned pursuant to the terms of the awards is 200% of the target units granted.

The weighted average grant date fair value of performance-contingent restricted share units granted during fiscal years 2024 and 2023 was $74.23 and $79.88 per share, respectively.

Fiscal 2025 activity of restricted stock units subject to performance and/or market conditions is presented below:

|  | Units |  |  | Weighted Average Grant Date Fair Value Per Unit |
Non-vested at September 30, 2024 |  |  | 289,205 |  |  | $ | 73.36 |
Granted |  |  | 103,780 |  |  | $ | 76.52 |
Adjusted for performance |  |  | 21,469 |  |  | $ | 65.02 |
Vested |  |  | (100,784 | ) |  | $ | 65.02 |
Forfeited |  |  | (69,166 | ) |  | $ | 74.67 |
Non-vested at September 30, 2025 |  |  | 244,504 |  |  | $ | 75.62 |

For the year ended September 30, 2025, the total number of shares or share equivalents that could be issued if all outstanding award grants attain maximum performance payout is 564,862.

During fiscal 2025, the Company granted 57,030 shares of time-vested restricted stock to executive officers and key employees at a weighted average grant date fair value of $72.00 per share. Unless forfeited based on terms of the agreements, these shares will vest in fiscal 2028. In the interim, participants receive full voting rights and dividends, which are not subject to forfeiture. The weighted average grant date fair value of time-vested restricted stock and restricted stock units awarded to employees during fiscal years 2024 and 2023 was $60.68 and $71.91 per share, respectively.

During fiscal 2025, the Company granted 15,750 shares of time-vested restricted stock to non-employee directors at a weighted average grant date fair value of $71.38 per share. These shares vested in fiscal 2025, six months after the grant date. The weighted average grant date fair value of restricted stock awarded to non-employee directors during fiscal years 2024 and 2023 was $58.03 and $75.59 per share, respectively.

Time-vested restricted stock and stock unit activity for fiscal 2025 is presented below:

|  | Shares/ Units |  |  | Weighted Average Grant Date Fair Value Per Share |
Non-vested at September 30, 2024 |  |  | 85,559 |  |  | $ | 64.13 |
Granted |  |  | 57,030 |  |  | $ | 72.00 |
Vested |  |  | (42,677 | ) |  | $ | 66.36 |
Forfeited |  |  | (23,348 | ) |  | $ | 67.61 |
Non-vested at September 30, 2025 |  |  | 76,564 |  |  | $ | 67.20 |

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For restricted stock and stock units (performance-contingent and time-vested) that vested during fiscal years 2025, 2024, and 2023, the Company withheld 26,892 shares, 24,724 shares, and 18,428 shares, respectively, at weighted average prices of $73.45, $60.73 and $72.03 per share, respectively, pursuant to elections by employees to satisfy tax withholding obligations. The total fair value of restricted stock (performance-contingent and time-vested) that vested during fiscal years 2025, 2024, and 2023 was $8.0, $11.9, and $8.6, respectively, and the related tax benefit was $4.0, $3.7, and $3.2, respectively. None of the tax benefits have been realized.

Equity Compensation Costs

Compensation cost for performance-contingent restricted stock and stock unit awards is based upon the probable outcome of the performance conditions. For shares or units that do not vest or that are not expected to vest due to the outcome of the performance conditions (excluding market conditions), no compensation cost is recognized and any previously recognized compensation cost is reversed.

The fair value of awards of performance-contingent and time-vested restricted stock and restricted stock units, not subject to the TSR provision, are estimated using the closing price of the Company’s stock on the grant date. For those awards that do not pay dividends during the vesting period, the estimate of fair value is reduced by the present value of the dividends expected to be paid on the Company’s common stock during the performance period, discounted using an appropriate U.S. Treasury yield. For shares subject to the TSR provision, the estimated impact of this market condition is reflected in the grant date fair value per share of the awards. Accordingly, compensation cost is not reversed to reflect any actual reductions in the awards that may result from the TSR provision. The grant date fair value of the awards subject to the TSR provision awarded during fiscal years 2024, 2023 and 2022 was valued by a Monte Carlo simulation model that assessed the probabilities of various TSR outcomes. The significant assumptions used in the Monte Carlo simulations are as follows:

|  | 2025 |  | 2024 |  | 2023
Risk-free interest rate |  | 4.33% |  | 4.66% |  | 4.26%
Expected dividend yield of stock |  | — |  | — |  | —
Expected volatility of stock |  | 22.2% |  | 23.3% |  | 33.8%
Performance period (in years) |  | 3.0 |  | 3.0 |  | 3.0

The risk-free interest rate was based on the yield on U.S. Treasury securities matching the vesting period. A zero-percent dividend yield was used, which is mathematically equivalent to the assumption that dividends are reinvested as they are paid. The expected volatility is based on the historical volatility of the Company’s stock. Volatility assumptions were also made for each of the companies included in the comparator group. The vesting period is equal to the performance period set forth in the terms of the award.

The amounts of compensation cost recognized for share-based compensation arrangements are presented below:

|  | 2025 |  |  | 2024 |  |  | 2023 |
Total compensation cost |  | $ | 7.8 |  |  | $ | 6.6 |  |  | $ | 11.2 |
Compensation cost capitalized |  |  | (1.1 | ) |  |  | (0.8 | ) |  |  | (1.4 | )
Compensation cost recognized in net income |  |  | 6.7 |  |  |  | 5.8 |  |  |  | 9.8 |
Income tax benefit recognized in net income |  |  | (1.5 | ) |  |  | (1.3 | ) |  |  | (2.2 | )
Compensation cost recognized in net income, net of income tax |  | $ | 5.2 |  |  | $ | 4.5 |  |  | $ | 7.6 |

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As of September 30, 2025, there was $8.7 of total unrecognized compensation cost related to non-vested share-based compensation arrangements, which is expected to be recognized over a weighted average period of 1.8 years.

4. EARNINGS PER COMMON SHARE

|  | 2025 |  |  | 2024 |  |  | 2023 |
Basic Earnings Per Common Share: |  |  |  |  |  |  |  |  |
Net Income |  | $ | 271.7 |  |  | $ | 250.9 |  |  | $ | 217.5 |
Less: Provision for preferred dividends |  |  | 14.8 |  |  |  | 14.8 |  |  |  | 14.8 |
Income allocated to participating securities |  |  | 0.3 |  |  |  | 0.3 |  |  |  | 0.3 |
Net Income Available to Common Shareholders |  | $ | 256.6 |  |  | $ | 235.8 |  |  | $ | 202.4 |
Weighted Average Common Shares Outstanding (in millions) |  |  | 58.5 |  |  |  | 56.1 |  |  |  | 52.5 |
Basic Earnings Per Share of Common Stock |  | $ | 4.39 |  |  | $ | 4.20 |  |  | $ | 3.86 |
Diluted Earnings per Common Share: |  |  |  |  |  |  |  |  |
Net Income |  | $ | 271.7 |  |  | $ | 250.9 |  |  | $ | 217.5 |
Less: Provision for preferred dividends |  |  | 14.8 |  |  |  | 14.8 |  |  |  | 14.8 |
Income allocated to participating securities |  |  | 0.3 |  |  |  | 0.3 |  |  |  | 0.3 |
Net Income Available to Common Shareholders |  | $ | 256.6 |  |  | $ | 235.8 |  |  | $ | 202.4 |
Weighted Average Common Shares Outstanding (in millions) |  |  | 58.5 |  |  |  | 56.1 |  |  |  | 52.5 |
Dilutive Effect of Restricted Stock and Restricted Stock Units (in millions)* |  |  | 0.2 |  |  |  | 0.2 |  |  |  | 0.1 |
Weighted Average Diluted Common Shares (in millions) |  |  | 58.7 |  |  |  | 56.3 |  |  |  | 52.6 |
Diluted Earnings Per Share of Common Stock |  | $ | 4.37 |  |  | $ | 4.19 |  |  | $ | 3.85 |
* Calculation excludes certain outstanding common shares (shown in millions by period at the right) attributable to common stock forward contracts, stock units subject to performance or market conditions, and restricted stock, which could have a dilutive effect in the future |  |  | 0.2 |  |  |  | 0.1 |  |  |  | 1.9 |

5. SHAREHOLDERS’ EQUITY

Spire

Preferred Stock

At September 30, 2025 and 2024, Spire had authorized 5,000,000 shares of preferred stock.

On May 21, 2019, Spire completed the public offering of 10,000,000 depositary shares (the “Depositary Shares”), each representing a 1/1,000th interest in a share of the Company’s 5.90% Series A Cumulative Redeemable Perpetual Preferred Stock, par value $25.00 per share, with a liquidation preference of $25,000 per share (the “Preferred Stock”). The transaction resulted in the issuance of 10,000 shares of preferred stock for $242.0 of net proceeds.

Dividends on the Preferred Stock, when declared by the Board, are payable on the liquidation preference amount, on a cumulative basis, quarterly in arrears on the 15th day of February, May, August and November of each year. Dividends are payable out of amounts legally available for the payment of dividends at an annual rate equal to 5.90% of the liquidation preference per share of Preferred Stock (equivalent to $25.00 per Depositary Share). Under the terms of the Preferred Stock, the Company’s ability to declare or pay dividends on, or purchase or redeem, shares of its common stock or any class or series of capital stock of the Company that rank junior to the Preferred Stock are subject to certain restrictions in the event that the Company does not declare and pay the full cumulative dividends on the Preferred Stock through the most recently completed quarterly dividend period.

Spire may, at its option, redeem the Preferred Stock in whole or in part, from time to time, at a redemption price in cash equal to $25,000 per share, plus all accumulated and unpaid dividends (whether declared or not) up to the redemption date.

Shareholders of the Preferred Stock generally have no voting rights with respect to matters that generally require the approval of voting stockholders. The limited voting rights of holders of the Preferred Stock include the right to vote on certain matters that may affect the preference or special rights of the Preferred Stock. In addition, if and whenever dividends on any shares of Preferred Stock have not been declared and paid for at least six dividend periods, whether or not consecutive, the number of directors then constituting the Board shall automatically be increased by two (to be elected by the holders of the Preferred Stock) until all accumulated and unpaid dividends on the Preferred Stock have been paid in full.

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Equity Units

In February 2021, Spire issued 3.5 million equity units, initially in the form of Corporate Units (as defined in the Underwriting Agreement, dated February 9, 2021, filed as Exhibit 1.1 to the Company’s Current Report on Form 8-K filed on February 16, 2021). Each Corporate Unit was comprised of (i) a purchase contract obligating the holder to purchase from the Company for a price in cash of fifty dollars, on the purchase contract settlement date (March 1, 2024, subject to earlier termination or settlement), a certain number of shares of the Company’s common stock and (ii) a 1/20th, or 5%, undivided beneficial ownership interest in one thousand dollars principal amount of the Company’s 2021 Series A 0.75% Remarketable Senior Notes due 2026. Each Corporate Unit purchase contract obligated holders to purchase a variable number of shares of common stock of the Company based on the applicable market value, subject to anti-dilution adjustments. As of March 1, 2024, the applicable market value was calculated to be $58.6809 per share, and after adjustment the holders were obligated to purchase 0.7845 shares of common stock. The Corporate Unit holders purchased an aggregate of 2,745,733 shares of common stock (net of fractional shares) for $175.0, settled on March 5, 2024.

ATM Program

Under Spire’s “at-the-market” (ATM) equity distribution agreement and as authorized by its board of directors, the Company may offer and sell, from time to time, shares of its common stock (including shares of common stock that may be sold pursuant to forward sale agreements entered into in connection with the ATM equity distribution agreement). Settled sales under this ATM program are included in “Common stock issued” in the Consolidated Statements of Shareholders’ Equity. Specifically in the first quarter of fiscal 2024, on December 11, 2023, 1,744,549 shares were settled, generating $112.2 of net proceeds. On January 25, 2024, Spire’s board approved a new authorization for the sale of additional shares with an aggregate offering price of up to $200.0 through January 2027.

In the second and third quarters of fiscal 2024, Spire executed forward sale agreements for a total of 542,515 shares of its common stock, which were settled in December 2024, generating $32.4 of net proceeds. In the fourth quarter of fiscal 2024, Spire executed forward sale agreements for 663,619 shares of its common stock, which were settled in March 2025, generating proceeds of $42.4. As of September 30, 2025, there were no outstanding forward sales agreements.

As of September 30, 2025, under the ATM program, Spire may sell additional shares with an aggregate offering price of up to $123.6. The Company suspended activity under the ATM program beginning August 7, 2025, and such suspension will remain in effect until two business days after the Company files its Annual Report on Form 10-K for the fiscal year ended September 30, 2025.

Other Equity Information

Spire has a shelf registration statement on Form S-3 on file with the SEC for the issuance and sale of up to 250,000 shares of common stock under its Dividend Reinvestment and Direct Stock Purchase Plan. There were 196,135 and 218,141 shares at September 30, 2025 and 2024, respectively, remaining available for issuance under this Form S-3. Spire also has a universal shelf registration statement on Form S-3 on file with the SEC for the issuance of various equity and debt securities, which expires on May 6, 2028.

Spire Missouri

Substantially all of Spire Missouri’s plant is subject to the liens of its first mortgage bonds. The mortgage contains several restrictions on Spire Missouri’s ability to pay cash dividends on its common stock or to make loans to its parent company. These mortgage restrictions are applicable regardless of whether the stock is publicly held or held solely by Spire Missouri’s parent company. Under the most restrictive of these provisions, no cash dividend may be declared or paid if, after the dividend, the aggregate net amount spent for all dividends after September 30, 1953 would exceed a maximum amount determined by a formula set out in the mortgage. Under that formula, the maximum amount is the sum of $8.0 plus earnings applicable to common stock (adjusted for stock repurchases and issuances) for the period from September 30, 1953 to the last day of the quarter before the declaration or payment date for the dividends. As of September 30, 2025 and 2024, the amount under the mortgage’s formula that was available to pay dividends was $1,999.4 and $1,797.0, respectively, so all of Spire Missouri’s retained earnings were free from such restrictions.

Spire Missouri has a universal shelf registration statement on Form S-3 on file with the SEC for the issuance of various equity and debt securities, which expires on May 6, 2028. Effective October 27, 2024, Spire Missouri was authorized by the MoPSC to issue conventional term loans, first mortgage bonds, unsecured debt, preferred stock and common stock in an aggregate amount not to exceed $850.0 any time from that date through December 31, 2027. Under this authorization, through October 23, 2025, Spire Missouri has issued $74.4 of common stock and $350 of first mortgage bonds. Approximately $426.0 remains available for issuance under this authorization.

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As of September 30, 2025 and 2024, Spire Missouri had authorized 1,480,000 shares of preferred stock, but none had been issued.

Spire Alabama

As of September 30, 2025 and 2024, Spire Alabama had authorized 120,000 shares of preferred stock, but none had been issued.

Accumulated Other Comprehensive Income

The components of accumulated other comprehensive income ("AOCI"), net of income taxes, recognized in the balance sheets at September 30 were as follows:

|  | Net |  |  | Defined Benefit |  |  | Net Unrealized |  |  |  |
|  | Unrealized |  |  | Pension and |  |  | Gain (Loss) on |  |  |  |
|  | Gain (Loss) |  |  | Other |  |  | Available-for- |  |  |  |
|  | on Cash Flow |  |  | Postretirement |  |  | Sale Debt |  |  |  |
|  | Hedges |  |  | Benefit Plans |  |  | Securities |  |  | Total |
Spire |  |  |  |  |  |  |  |  |  |  |  |
Balance at September 30, 2023 |  | $ | 50.5 |  |  | $ | (2.5 | ) |  | $ | (0.4 | ) |  | $ | 47.6 |
Other comprehensive (loss) income |  |  | (36.3 | ) |  |  | 0.5 |  |  |  | 0.3 |  |  |  | (35.5 | )
Balance at September 30, 2024 |  |  | 14.2 |  |  |  | (2.0 | ) |  |  | (0.1 | ) |  |  | 12.1 |
Other comprehensive income |  |  | 5.9 |  |  |  | 1.3 |  |  |  | 0.1 |  |  |  | 7.3 |
Balance at September 30, 2025 |  | $ | 20.1 |  |  | $ | (0.7 | ) |  | $ | — |  |  | $ | 19.4 |
Spire Missouri |  |  |  |  |  |  |  |  |  |  |  |
Balance at September 30, 2023 |  | $ | — |  |  | $ | (2.5 | ) |  | $ | — |  |  | $ | (2.5 | )
Other comprehensive income |  |  | — |  |  |  | 0.5 |  |  |  | — |  |  |  | 0.5 |
Balance at September 30, 2024 |  |  | — |  |  |  | (2.0 | ) |  |  | — |  |  |  | (2.0 | )
Other comprehensive income |  |  | — |  |  |  | 1.3 |  |  |  | — |  |  |  | 1.3 |
Balance at September 30, 2025 |  | $ | — |  |  | $ | (0.7 | ) |  | $ | — |  |  | $ | (0.7 | )

Income tax expense (benefit) recorded for items of other comprehensive income (loss) reported in the statements of comprehensive income is calculated by applying statutory federal, state, and local income tax rates applicable to ordinary income. The tax rates applied to individual items of other comprehensive income (loss) are similar within each reporting period. For the periods presented, Spire Alabama had no AOCI balances.

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6. LONG-TERM DEBT

The composition of long-term debt as of September 30 is shown in the following tables.

|  | 2025 |  |  | 2024 |
Spire |  |  |  |  |  |
5.30% Senior Notes, due March 1, 2026 |  | $ | 350.0 |  |  | $ | 350.0 |
3.13% Senior Notes, due September 1, 2026 |  |  | 130.0 |  |  |  | 130.0 |
3.93% Senior Notes, due March 15, 2027 |  |  | 100.0 |  |  |  | 100.0 |
5.80% Senior Notes, due March 15, 2033 |  |  | 150.0 |  |  |  | 150.0 |
4.70% Senior Notes, due August 15, 2044 |  |  | 250.0 |  |  |  | 250.0 |
Total principal of Spire Missouri long-term debt (see below) |  |  | 1,968.0 |  |  |  | 1,818.0 |
Total principal of Spire Alabama long-term debt (see below) |  |  | 715.0 |  |  |  | 750.0 |
Other subsidiaries' long-term debt: |  |  |  |  |  |
5.00% First Mortgage Bonds, due September 30, 2031 |  |  | 42.0 |  |  |  | 42.0 |
2.95% Notes, with annual principal payments through December 2034 |  |  | 104.1 |  |  |  | 111.1 |
5.61% First Mortgage Bonds, due October 15, 2037 |  |  | 30.0 |  |  |  | 30.0 |
3.52% First Mortgage Bonds, due September 30, 2049 |  |  | 40.0 |  |  |  | 40.0 |
Total principal of long-term debt |  |  | 3,879.1 |  |  |  | 3,771.1 |
Less: Unamortized discounts and debt issuance costs |  |  | (22.2 | ) |  |  | (24.7 | )
Less: Current portion |  |  | (487.5 | ) |  |  | (42.0 | )
Long-term debt, excluding current portion |  | $ | 3,369.4 |  |  | $ | 3,704.4 |
Spire Missouri |  |  |  |  |  |
First Mortgage Bonds: |  |  |  |  |  |
3.40% Series, due March 15, 2028 |  | $ | 45.0 |  |  | $ | 45.0 |
7.00% Series, due June 1, 2029 |  |  | 19.3 |  |  |  | 19.3 |
2.84% Series, due November 15, 2029 |  |  | 275.0 |  |  |  | 275.0 |
4.88% Series, due September 15, 2030 |  |  | 90.0 |  |  |  | — |
7.90% Series, due September 15, 2030 |  |  | 30.0 |  |  |  | 30.0 |
5.12% Series, due September 15, 2032 |  |  | 60.0 |  |  |  | — |
3.68% Series, due September 15, 2032 |  |  | 50.0 |  |  |  | 50.0 |
4.80% Series, due February 15, 2033 |  |  | 400.0 |  |  |  | 400.0 |
6.00% Series, due May 1, 2034 |  |  | 99.3 |  |  |  | 99.3 |
5.15% Series, due August 15, 2034 |  |  | 320.0 |  |  |  | 320.0 |
6.15% Series, due June 1, 2036 |  |  | 54.5 |  |  |  | 54.5 |
4.63% Series, due August 15, 2043 |  |  | 99.9 |  |  |  | 99.9 |
4.23% Series, due September 15, 2047 |  |  | 70.0 |  |  |  | 70.0 |
3.30% Series, due June 1, 2051 |  |  | 305.0 |  |  |  | 305.0 |
4.38% Series, due September 15, 2057 |  |  | 50.0 |  |  |  | 50.0 |
Total principal of Spire Missouri long-term debt |  |  | 1,968.0 |  |  |  | 1,818.0 |
Less: Unamortized discounts and debt issuance costs |  |  | (14.4 | ) |  |  | (14.6 | )
Spire Missouri long-term debt, excluding current portion |  | $ | 1,953.6 |  |  | $ | 1,803.4 |
Spire Alabama |  |  |  |  |  |
3.21% Notes, due September 15, 2025 |  | $ | — |  |  | $ | 35.0 |
5.32% Notes, due October 15, 2029 |  |  | 90.0 |  |  |  | 90.0 |
2.88% Notes, due December 1, 2029 |  |  | 100.0 |  |  |  | 100.0 |
2.04% Notes, due December 15, 2030 |  |  | 150.0 |  |  |  | 150.0 |
5.41% Notes, due October 15, 2032 |  |  | 85.0 |  |  |  | 85.0 |
5.90% Notes, due January 15, 2037 |  |  | 45.0 |  |  |  | 45.0 |
4.31% Notes, due December 1, 2045 |  |  | 80.0 |  |  |  | 80.0 |
3.92% Notes, due January 15, 2048 |  |  | 45.0 |  |  |  | 45.0 |
4.64% Notes, due January 15, 2049 |  |  | 90.0 |  |  |  | 90.0 |
4.02% Notes, due January 15, 2058 |  |  | 30.0 |  |  |  | 30.0 |
Total principal of Spire Alabama long-term debt |  |  | 715.0 |  |  |  | 750.0 |
Less: Unamortized discounts and debt issuance costs |  |  | (3.3 | ) |  |  | (3.7 | )
Less: Current portion |  |  | — |  |  |  | (35.0 | )
Spire Alabama long-term debt, excluding current portion |  | $ | 711.7 |  |  | $ | 711.3 |

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Maturities of long-term debt for Spire on a consolidated basis, Spire Missouri and Spire Alabama for the five fiscal years after September 30, 2025 are as follows:

|  | 2026 |  |  | 2027 |  |  | 2028 |  |  | 2029 |  |  | 2030 |
Spire |  | $ | 487.5 |  |  | $ | 108.1 |  |  | $ | 53.6 |  |  | $ | 28.5 |  |  | $ | 594.9 |
Spire Missouri |  |  | — |  |  |  | — |  |  |  | 45.0 |  |  |  | 19.3 |  |  |  | 395.0 |
Spire Alabama |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 190.0 |

The long-term debt agreements of Spire, Spire Missouri and Spire Alabama contain customary financial covenants and default provisions. As of September 30, 2025, there were no events of default under these financial covenants.

Spire

At September 30, 2025, Spire had outstanding principal of long-term debt totaling $3,879.1, of which $1,968.0 was issued by Spire Missouri, $715.0 was issued by Spire Alabama and $1,196.1 was issued by Spire and other subsidiaries. All long-term debt bears fixed rates and is subject to changes in fair value as market interest rates change. However, increases and decreases in fair value would impact earnings and cash flows only if the Company were to reacquire any of these issues in the open market prior to maturity. Under GAAP applicable to the Utilities’ regulated operations, losses or gains on early redemption of long-term debt would typically be deferred as regulatory assets or regulatory liabilities and amortized over a future period. Interest expense shown on Spire’s consolidated statement of income is net of capitalized interest totaling $19.5, $17.0 and $8.6 for the years ended September 30, 2025, 2024 and 2023, respectively.

As indicated in Note 5, Shareholders’ Equity, Spire has a shelf registration statement on Form S-3 on file with the SEC for the issuance of equity and debt securities.

Spire Missouri

At September 30, 2025, Spire Missouri had outstanding principal of long-term debt totaling $1,968.0. All long-term debt bears fixed rates and is subject to changes in fair value as market interest rates change. Interest expense shown on Spire Missouri’s statement of comprehensive income is net of capitalized interest totaling $4.8, $4.6 and $3.1 for the years ended September 30, 2025, 2024 and 2023, respectively.

On October 23, 2025, Spire Missouri issued an aggregate principal amount of $200.0 of First Mortgage Bonds. The first tranche consiste d of an aggregate principal amount of $150.0, bearing interest at 4.60% per annum and maturing on September 15, 2030. The second tranche consisted of an aggregate principal amount of $50.0, bears interest at 4.65% per annum and maturing on January 15, 2031. Intere st is payable semi-annually on March 15 and September 15 of each year. The bonds are senior secured indebtedness of Spire Missouri and rank equally with all other existing and future senior secured indebtedness issued by Spire Missouri under its Mortgage and Deed of Trust. The bonds are secured by a first mortgage lien on substantially all the real properties of Spire Missouri, subject to limited exceptions. Spire Missouri used the proceeds for general corporate purposes.

As indicated in Note 5, Shareholders’ Equity, Spire Missouri has a shelf registration on Form S-3 on file with the SEC for issuance of equity and debt securities, which expires on May 7, 2028. Effective October 27, 2024, Spire Missouri was authorized by the MoPSC to issue conventional term loans, first mortgage bonds, unsecured debt, preferred stock and common stock in an aggregate amount not to exceed $850.0 any time from that date through December 31, 2027. Under this authorization, through October 23, 2025, Spire Missouri has issued $74.4 of common stock and $350 of first mortgage bonds. Approximately $426.0 remains available for issuance under this authorization.

Substantially all of Spire Missouri’s plant is subject to the liens of its first mortgage bonds. The mortgage contains several restrictions on Spire Missouri’s ability to pay cash dividends on its common stock, which are described in Note 5, Shareholders’ Equity.

Spire Alabama

At September 30, 2025, Spire Alabama had outstanding principal of fixed-rate long-term debt totaling $715.0. All long-term debt bears fixed rates and is subject to changes in fair value as market interest rates change. Interest expense shown on Spire Alabama’s statement of income is net of capitalized interest totaling $4.5, $1.8 and $2.3 for the years ended September 30, 2025, 202 4 and 2023, respectively.

Spire Alabama has no standing authority to issue long-term debt and must petition the APSC for each planned issuance.

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7. NOTES PAYABLE AND CREDIT AGREEMENTS

Spire, Spire Missouri and Spire Alabama have a syndicated revolving credit facility pursuant to a loan agreement with 12 banks through October 11, 2029. The loan agreement has an aggregate credit commitment of $1,500.0, including sublimits of $525.0 for the Spire holding company, $700.0 for Spire Missouri and $275.0 for Spire Alabama. These sublimits may be reallocated from time to time among the three borrowers within the $1,500.0 aggregate commitment, with commitment fees and interest margins applied for each borrower relative to its credit rating. The Spire holding company may use its line to provide for the funding needs of various subsidiaries. The agreement also contains financial covenants limiting each borrower’s consolidated total debt, including short-term debt, to no more than 70% of its total capitalization. As defined in the line of credit, on September 30, 2025, total debt was less than 65% of total capitalization for each borrower. There were no borrowings against this credit facility as of September 30, 2025 and 2024.

Spire has a commercial paper program (“CP Program”) pursuant to which it may issue short-term, unsecured commercial paper notes. Amounts available under the CP Program may be borrowed, repaid and re-borrowed from time to time, with the aggregate face or principal amount of the notes outstanding under the CP Program at any time not to exceed $1,500.0. The notes may have maturities of up to 365 days from date of issue.

On January 3, 2024, Spire Missouri entered into a short-term loan agreement with several banks for a $200.0 unsecured term loan. Interest accrued at the one-month term secured overnight financing rate (“SOFR”) plus a SOFR adjustment of 0.10% per annum plus a margin of 0.90% per annum. Spire Missouri repaid $50.0 of this loan on April 5, 2024 and the remaining $150.0 balance on May 6, 2024.

Information about short-term borrowings, including Spire Missouri’s and Spire Alabama’s borrowings from Spire, is presented in the following table. As of September 30, 2025, $741.0 of Spire’s short-term borrowings were used to support lending to the Utilities.

|  | Spire |  |  | Spire |  |  | Spire |  |  |  |
|  | (Parent Only) |  |  | Missouri |  |  | Alabama |  |  | Spire |
|  | CP |  |  |  | Spire |  |  | Spire |  |  | Consol- |
|  | Program |  |  |  | Note |  |  | Note |  |  | idated |
Year Ended September 30, 2025 |  |  |  |  |  |  |  |  |  |  |  |  |
Highest borrowings outstanding |  | $ | 1,348.0 |  |  |  | $ | 615.0 |  |  | $ | 130.6 |  |  | $ | 1,348.0 |
Lowest borrowings outstanding |  |  | 896.0 |  |  |  |  | 299.5 |  |  |  | 1.2 |  |  |  | 896.0 |
Weighted average borrowings |  |  | 1,085.7 |  |  |  |  | 482.6 |  |  |  | 50.8 |  |  |  | 1,085.7 |
Weighted average interest rate |  |  | 4.5 | % |  |  |  | 4.7 | % |  |  | 4.7 | % |  |  | 4.5 | %
As of September 30, 2025 |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings outstanding |  | $ | 1,317.0 |  |  |  | $ | 566.3 |  |  | $ | 130.1 |  |  | $ | 1,317.0 |
Weighted average interest rate |  |  | 4.4 | % |  |  |  | 4.4 | % |  |  | 4.4 | % |  |  | 4.4 | %
As of September 30, 2024 |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings outstanding |  | $ | 947.0 |  |  |  | $ | 495.3 |  |  | $ | 48.4 |  |  | $ | 947.0 |
Weighted average interest rate |  |  | 5.2 | % |  |  |  | 5.2 | % |  |  | 5.2 | % |  |  | 5.2 | %

For additional information regarding the pending acquisition of Tennessee natural gas business from Piedmont Natural Gas, see Note 18 – Business Combinations, which is supported by a fully committed bridge financing facility discussed therein.

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8. FAIR VALUE OF FINANCIAL INSTRUMENTS

The carrying amounts and estimated fair values of financial instruments not measured at fair value on a recurring basis were as follows:

|  |  |  |  |  |  |  | Classification of |
|  |  |  |  |  |  |  | Estimated Fair Value |
|  |  |  |  |  |  |  | Quoted |  |  |  |
|  |  |  |  |  |  |  | Prices in |  |  | Significant |
|  |  |  |  |  |  |  | Active |  |  | Observable |
|  | Carrying |  |  | Fair |  |  | Markets |  |  | Inputs |
|  | Amount |  |  | Value |  |  | (Level 1) |  |  | (Level 2) |
Spire |  |  |  |  |  |  |  |  |  |  |  |
As of September 30, 2025 |  |  |  |  |  |  |  |  |  |  |  |
Cash and cash equivalents |  | $ | 5.7 |  |  | $ | 5.7 |  |  | $ | 5.7 |  |  | $ | — |
Notes payable |  |  | 1,317.0 |  |  |  | 1,317.0 |  |  |  | — |  |  |  | 1,317.0 |
Long-term debt, including current portion |  |  | 3,856.9 |  |  |  | 3,691.5 |  |  |  | — |  |  |  | 3,691.5 |
As of September 30, 2024 |  |  |  |  |  |  |  |  |  |  |  |
Cash and cash equivalents |  | $ | 4.5 |  |  | $ | 4.5 |  |  | $ | 4.5 |  |  | $ | — |
Notes payable |  |  | 947.0 |  |  |  | 947.0 |  |  |  | — |  |  |  | 947.0 |
Long-term debt, including current portion |  |  | 3,746.4 |  |  |  | 3,600.3 |  |  |  | — |  |  |  | 3,600.3 |
Spire Missouri |  |  |  |  |  |  |  |  |  |  |  |
As of September 30, 2025 |  |  |  |  |  |  |  |  |  |  |  |
Notes payable - associated companies |  | $ | 566.3 |  |  | $ | 566.3 |  |  | $ | — |  |  | $ | 566.3 |
Long-term debt |  |  | 1,953.6 |  |  |  | 1,874.0 |  |  |  | — |  |  |  | 1,874.0 |
As of September 30, 2024 |  |  |  |  |  |  |  |  |  |  |  |
Notes payable - associated companies |  | $ | 495.3 |  |  | $ | 495.3 |  |  | $ | — |  |  | $ | 495.3 |
Long-term debt |  |  | 1,803.4 |  |  |  | 1,736.9 |  |  |  | — |  |  |  | 1,736.9 |
Spire Alabama |  |  |  |  |  |  |  |  |  |  |  |
As of September 30, 2025 |  |  |  |  |  |  |  |  |  |  |  |
Cash and cash equivalents |  | $ | 1.9 |  |  | $ | 1.9 |  |  | $ | 1.9 |  |  | $ | — |
Notes payable - associated companies |  |  | 130.1 |  |  |  | 130.1 |  |  |  | — |  |  |  | 130.1 |
Long-term debt |  |  | 711.7 |  |  |  | 675.9 |  |  |  | — |  |  |  | 675.9 |
As of September 30, 2024 |  |  |  |  |  |  |  |  |  |  |  |
Cash and cash equivalents |  | $ | 1.5 |  |  | $ | 1.5 |  |  | $ | 1.5 |  |  | $ | — |
Notes payable - associated companies |  |  | 48.4 |  |  |  | 48.4 |  |  |  | — |  |  |  | 48.4 |
Long-term debt, including current portion |  |  | 746.3 |  |  |  | 711.8 |  |  |  | — |  |  |  | 711.8 |

9. FAIR VALUE MEASUREMENTS

The information presented below categorizes the assets and liabilities in the balance sheets that are accounted for at fair value on a recurring basis in periods subsequent to initial recognition.

The mutual funds and bonds included in Level 1 are valued based on exchange-quoted market prices of individual securities.

Derivative instruments included in Level 1 are valued using quoted market prices on the NYMEX or the ICE and also certain natural gas commodity contracts. Derivative instruments classified in Level 2 include physical commodity derivatives and interest rate swaps that are valued using broker or dealer quotation services whose prices are derived principally from, or are corroborated by, observable market inputs. Also included in Level 2 are certain derivative instruments that have values that are similar to, and correlate with, quoted prices for exchange-traded instruments in active markets. Derivative instruments included in Level 3 are valued using generally unobservable inputs that are based upon the best information available and reflect management’s assumptions about how market participants would price the asset or liability. There were no Level 3 balances as of September 30, 2025 or 202 4. The Company’s and the Utilities’ policy is to recognize transfers between the levels of the fair value hierarchy, if any, as of the beginning of the interim reporting period in which circumstances change or events occur to cause the transfer.

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The mutual funds are included in “Other investments” on the Company’s balance sheets and in “Other Property and Investments” on Spire Missouri’s balance sheets. Changes in their recurring valuations are recorded as unrealized investment gains or losses in the corresponding periodic income statement. Derivative assets and liabilities, including receivables and payables associated with cash margin requirements, are presented net on the balance sheets when a legally enforceable netting agreement exist between the Company, Spire Missouri or Spire Alabama and the counterparty to the derivative contract. For additional information on derivative instruments, see Note 10, Derivative Instruments and Hedging Activities.

Spire

|  |  |  |  |  |  |  |  |  |  | Effects of |  |  |  |
|  | Quoted |  |  |  |  |  |  |  |  | Netting |  |  |  |
|  | Prices |  |  | Significant |  |  | Significant |  |  | and Cash |  |  |  |
|  | in Active |  |  | Observable |  |  | Unobservable |  |  | Margin |  |  |  |
|  | Markets |  |  | Inputs |  |  | Inputs |  |  | Receivables |  |  |  |
|  | (Level 1) |  |  | (Level 2) |  |  | (Level 3) |  |  | /Payables |  |  | Total |
As of September 30, 2025 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
ASSETS |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gas Utility: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. stock/bond mutual funds |  | $ | 27.5 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 27.5 |
NYMEX/ICE natural gas contracts |  |  | 2.9 |  |  |  | — |  |  |  | — |  |  |  | (2.9 | ) |  |  | — |
Gas Marketing: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
NYMEX/ICE natural gas contracts |  |  | 11.4 |  |  |  | — |  |  |  | — |  |  |  | (11.4 | ) |  |  | — |
Natural gas commodity contracts |  |  | — |  |  |  | 44.8 |  |  |  | — |  |  |  | (2.7 | ) |  |  | 42.1 |
Other: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. stock/bond mutual funds |  |  | 27.0 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 27.0 |
U.S. bonds |  |  | 23.5 |  |  |  | — |  |  |  | — |  |  |  |  |  |  | 23.5 |
Global Bonds |  |  | 1.5 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 1.5 |
Interest rate swaps |  |  | — |  |  |  | 10.0 |  |  |  | — |  |  |  | — |  |  |  | 10.0 |
Total |  | $ | 93.8 |  |  | $ | 54.8 |  |  | $ | — |  |  | $ | (17.0 | ) |  | $ | 131.6 |
LIABILITIES |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gas Utility: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
NYMEX/ICE natural gas contracts |  | $ | 25.9 |  |  | $ | — |  |  | $ | — |  |  | $ | (1.3 | ) |  | $ | 24.6 |
Gas Marketing: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
NYMEX/ICE natural gas contracts |  |  | 19.0 |  |  |  | — |  |  |  | — |  |  |  | (19.0 | ) |  |  | — |
Natural gas commodity contracts |  |  | — |  |  |  | 16.7 |  |  |  | — |  |  |  | (2.7 | ) |  |  | 14.0 |
Total |  | $ | 44.9 |  |  | $ | 16.7 |  |  | $ | — |  |  | $ | (23.0 | ) |  | $ | 38.6 |
As of September 30, 2024 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
ASSETS |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gas Utility: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. stock/bond mutual funds |  | $ | 24.3 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 24.3 |
NYMEX/ICE natural gas contracts |  |  | 3.4 |  |  |  | — |  |  |  | — |  |  |  | (3.4 | ) |  |  | — |
Gas Marketing: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
NYMEX/ICE natural gas contracts |  |  | 7.0 |  |  |  | — |  |  |  | — |  |  |  | (7.0 | ) |  |  | — |
Natural gas commodity contracts |  |  | — |  |  |  | 46.0 |  |  |  | — |  |  |  | (3.5 | ) |  |  | 42.5 |
Other: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. stock/bond mutual funds |  |  | 17.9 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 17.9 |
U.S. bonds |  |  | 21.9 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 21.9 |
Global Bonds |  |  | 5.9 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 5.9 |
Interest rate swaps |  |  | — |  |  |  | 0.8 |  |  |  | — |  |  |  | — |  |  |  | 0.8 |
Total |  | $ | 80.4 |  |  | $ | 46.8 |  |  | $ | — |  |  | $ | (13.9 | ) |  | $ | 113.3 |
LIABILITIES |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gas Utility: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
NYMEX/ICE natural gas contracts |  | $ | 13.6 |  |  | $ | — |  |  | $ | — |  |  | $ | (3.8 | ) |  | $ | 9.8 |
Gas Marketing: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
NYMEX/ICE natural gas contracts |  |  | 17.7 |  |  |  | — |  |  |  | — |  |  |  | (17.7 | ) |  |  | — |
Natural gas commodity contracts |  |  | — |  |  |  | 24.5 |  |  |  | — |  |  |  | (3.5 | ) |  |  | 21.0 |
Other: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate swaps |  |  | — |  |  |  | 1.5 |  |  |  | — |  |  |  | — |  |  |  | 1.5 |
Total |  | $ | 31.3 |  |  | $ | 26.0 |  |  | $ | — |  |  | $ | (25.0 | ) |  | $ | 32.3 |

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Spire Missouri

|  |  |  |  |  |  |  |  |  |  | Effects of |  |  |  |
|  | Quoted |  |  |  |  |  |  |  |  | Netting |  |  |  |
|  | Prices |  |  | Significant |  |  | Significant |  |  | and Cash |  |  |  |
|  | in Active |  |  | Observable |  |  | Unobservable |  |  | Margin |  |  |  |
|  | Markets |  |  | Inputs |  |  | Inputs |  |  | Receivables |  |  |  |
|  | (Level 1) |  |  | (Level 2) |  |  | (Level 3) |  |  | /Payables |  |  | Total |
As of September 30, 2025 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
ASSETS |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. stock/bond mutual funds |  | $ | 27.5 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 27.5 |
NYMEX/ICE natural gas contracts |  |  | 2.9 |  |  |  | — |  |  |  | — |  |  |  | (2.9 | ) |  |  | — |
Total |  | $ | 30.4 |  |  | $ | — |  |  | $ | — |  |  | $ | (2.9 | ) |  | $ | 27.5 |
LIABILITIES |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
NYMEX/ICE natural gas contracts |  | $ | 25.9 |  |  | $ | — |  |  | $ | — |  |  | $ | (1.3 | ) |  | $ | 24.6 |
As of September 30, 2024 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
ASSETS |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. stock/bond mutual funds |  | $ | 24.3 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 24.3 |
NYMEX/ICE natural gas contracts |  |  | 3.4 |  |  |  | — |  |  |  | — |  |  |  | (3.4 | ) |  |  | — |
Total |  | $ | 27.7 |  |  | $ | — |  |  | $ | — |  |  | $ | (3.4 | ) |  | $ | 24.3 |
LIABILITIES |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
NYMEX/ICE natural gas contracts |  | $ | 13.6 |  |  | $ | — |  |  | $ | — |  |  | $ | (3.8 | ) |  | $ | 9.8 |

Spire Alabama

Spire Alabama occasionally utilizes a gasoline derivative program to stabilize the cost of fuel used in operations. As of September 30, 2025 and September 30, 2024, there were no gasoline derivatives outstanding.

10. DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES

Spire

Spire Missouri has a risk management policy to utilize various derivatives, including futures contracts, exchange-traded options and swaps for the explicit purpose of managing price risk associated with purchasing and delivering natural gas on a regular basis to customers in accordance with its tariffs. The objective of this policy is to limit Spire Missouri’s exposure to natural gas price volatility and to manage, hedge and mitigate substantial price risk. Further discussion of this policy can be found in the Spire Missouri section.

From time to time Spire Missouri and Spire Alabama purchase NYMEX futures and options contracts to help stabilize operating costs associated with forecasted purchases of gasoline and diesel fuels used to power vehicles and equipment. Further information on these derivatives can be found in the Spire Missouri and Spire Alabama sections, respectively.

In the course of its business, Spire’s gas marketing subsidiary, Spire Marketing enters into commitments associated with the purchase or sale of natural gas. Certain of Spire Marketing’s derivative natural gas contracts are designated as normal purchases or normal sales and, as such, are excluded from the scope of ASC Topic 815 and are accounted for as executory contracts on an accrual basis. Any of Spire Marketing’s derivative natural gas contracts that are not designated as normal purchases or normal sales are accounted for at fair value. At September 30, 2025, the fair values of 278.2 million MMBtu of non-exchange-traded natural gas commodity contracts were reflected in the Consolidated Balance Sheet. Of these contracts, 236.7 million MMBtu will settle during fiscal 2026, and 29.7 million MMBtu, 8.2 million MMBtu, and 3.4 million MMBtu, will settle during fiscal years 2027, 2028, and 2029, respectively. A total of 0.2 million MMBtu will settle in the years 2029-2031. These contracts have not been designated as hedges; therefore, changes in the fair value of these contracts are reported in earnings each period.

Furthermore, Spire Marketing manages the price risk associated with its fixed-priced commitments by either closely matching the offsetting physical purchase or sale of natural gas at fixed prices or through the use of NYMEX or ICE futures, swap, and option contracts to lock in margins.

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At September 30, 2025, Spire Marketing’s unmatched fixed-price positions were not material to Spire’s financial position or results of operations. Spire Marketing’s NYMEX and ICE natural gas futures, swap and option contracts used to lock in margins may be designated as cash flow hedges of forecasted transactions for financial reporting purposes.

Spire enters into cash flow hedges through the execution of interest rate swap contracts to protect itself against adverse movements in interest rates. At September 30, 2025, the following swaps were outstanding:

Period Originated |  | Contract Hedge Term (Years) |  |  | Notional Amount |  |  | Fixed Interest Rate |  |  | Fiscal 2025 Mark-to- Market Gain |
Quarter 3, fiscal 2023 |  |  | 10 |  |  | $ | 25.0 |  |  |  | 3.018 | % |  |  | 0.8 |
Quarter 1, fiscal 2024 |  |  | 10 |  |  |  | 25.0 |  |  |  | 3.400 | % |  |  | 0.8 |
Quarter 1, fiscal 2024 |  |  | 10 |  |  |  | 25.0 |  |  |  | 3.525 | % |  |  | 0.8 |
Quarter 1, fiscal 2024 |  | 10 |  |  |  | 25.0 |  |  |  | 3.535 | % |  |  | 0.8 |
Quarter 1, fiscal 2024 |  |  | 10 |  |  |  | 25.0 |  |  |  | 3.450 | % |  |  | 0.8 |
Quarter 4, fiscal 2024 |  |  | 10 |  |  |  | 25.0 |  |  |  | 3.541 | % |  |  | 0.7 |
Quarter 4, fiscal 2024 |  |  | 10 |  |  |  | 25.0 |  |  |  | 3.552 | % |  |  | 0.8 |
Quarter 4, fiscal 2024 |  |  | 10 |  |  |  | 25.0 |  |  |  | 3.426 | % |  |  | 0.8 |
Quarter 4, fiscal 2024 |  | 10 |  |  |  | 25.0 |  |  |  | 3.577 | % |  |  | 0.8 |
Quarter 4, fiscal 2024 |  | 10 |  |  |  | 25.0 |  |  |  | 3.450 | % |  |  | 0.8 |
Quarter 4, fiscal 2024 |  | 10 |  |  |  | 25.0 |  |  |  | 3.350 | % |  |  | 0.8 |
Quarter 1, fiscal 2025 |  | 1.5 |  |  |  | 125.0 |  |  |  | 3.567 | % |  |  | 0.2 |
Quarter 1, fiscal 2025 |  | 1.5 |  |  |  | 225.0 |  |  |  | 3.567 | % |  |  | 0.4 |
Quarter 3, fiscal 2025 |  | 10 |  |  |  | 25.0 |  |  |  | 3.580 | % |  |  | 0.3 |
Quarter 3, fiscal 2025 |  | 10 |  |  |  | 25.0 |  |  |  | 3.611 | % |  |  | 0.3 |
Quarter 3, fiscal 2025 |  | 10 |  |  |  | 25.0 |  |  |  | 3.657 | % |  |  | 0.3 |
Quarter 3, fiscal 2025 |  | 10 |  |  |  | 25.0 |  |  |  | 3.763 | % |  |  | 0.5 |
|  |  |  |  | $ | 725.0 |  |  |  |  |  | $ | 10.7 |

As of September 30, 2025, the Company has recorded through other comprehensive income a cumulative mark-to-market net asset of $10.0 on open swaps.

The Company’s and Spire Missouri’s exchange-traded/cleared derivative instruments consist primarily of NYMEX and ICE positions. The NYMEX is the primary national commodities exchange on which natural gas derivatives are traded. Open NYMEX and ICE natural gas futures and swap positions at September 30, 2025 and 2024 were as follows:

|  | September 30, 2025 |  |  | September 30, 2024 |
Gas Marketing |  | Notional (MMBtu millions) |  |  | Maximum Term (Months) |  |  | Notional (MMBtu millions) |  |  | Maximum Term (Months) |
Natural gas futures purchased |  |  | 48.0 |  |  |  | 48 |  |  |  | 56.0 |  |  |  | 48 |
Natural gas options purchased, net |  |  | 9.9 |  |  |  | 15 |  |  |  | 3.8 |  |  |  | 15 |
Natural gas basis swaps purchased |  |  | 24.7 |  |  |  | 39 |  |  |  | 32.4 |  |  |  | 39 |
Gas Utility |  |  |  |  |  |  |  |  |  |  |  |
Natural gas futures purchased |  |  | 32.3 |  |  |  | 12.0 |  |  |  | 34.6 |  |  |  | 12 |

At September 30, 2025, Spire Missouri also had 9.78 million MMBtu of other price mitigation in place through the use of NYMEX natural gas option-based strategies.

Derivative instruments designated as cash flow hedges of forecasted transactions are recognized on the balance sheets of the Company at fair value, and the change in fair value of the effective portion of these hedge instruments is recorded, net of income tax, in other comprehensive income or loss ("OCI"). AOCI is a component of Total Common Stock Equity. Amounts are reclassified from AOCI into earnings when the hedged items affect net income, using the same revenue or expense category that the hedged item impacts. Based on market prices at September 30, 2025, it is expected that $2.6 of net gains will be reclassified into the Consolidated Statements of Income of the Company during the next twelve months.

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Cash flows from hedging transactions are classified in the same category as the cash flows from the items that are being hedged in the Consolidated Statements of Cash Flows.

Effect of Derivative Instruments on the Consolidated Statements of Income and Comprehensive Income |
|  | Location of Gain (Loss) |  |  |  |  |  |  |  |  |
|  | Recorded in Income |  | 2025 |  |  | 2024 |  |  | 2023 |
Derivatives in Cash Flow Hedging Relationships |  |  |  |  |  |  |  |  |
Portion of gain (loss) recognized in OCI on derivatives: |  |  |  |  |  |  |  |  |
Interest rate swaps |  |  |  | $ | 12.8 |  |  | $ | (15.9 | ) |  | $ | 20.1 |
Portion of gain reclassified from AOCI to income: |  |  |  |  |  |  |  |  |
Interest rate swaps |  | Interest Expense |  | $ | 5.1 |  |  | $ | 11.1 |  |  | $ | 2.4 |
Derivatives Not Designated as Hedging Instruments* |  |  |  |  |  |  |  |  |
(Loss) gain recognized in income on derivatives: |  |  |  |  |  |  |  |  |
Gas / diesel futures |  | Other Income (Expense), Net |  | $ | — |  |  | $ | (0.3 | ) |  | $ | 0.3 |
Natural gas commodity contracts |  | Operating Expenses: Natural Gas |  |  | (6.5 | ) |  |  | 12.5 |  |  |  | 18.0 |
NYMEX / ICE natural gas contracts |  | Operating Expenses: Natural Gas |  |  | (3.1 | ) |  |  | (16.3 | ) |  |  | (35.0 | )
Total |  |  |  | $ | (9.6 | ) |  | $ | (4.1 | ) |  | $ | (16.7 | )

* Gains and losses on Spire Missouri’s natural gas derivative instruments, which are not designated as hedging instruments for financial reporting purposes, are deferred pursuant to the Missouri Utilities’ PGA clauses and initially recorded as regulatory assets or regulatory liabilities. These gains and losses are excluded from the table above because they have no direct impact on the statements of income. Such amounts are recognized in the statements of income as a component of natural gas operating expenses when they are recovered through the PGA clause and reflected in customer billings.

Fair Value of Derivative Instruments in the Consolidated Balance Sheets |
|  | Derivative Assets* |  |  | Derivative Liabilities* |
September 30, 2025 |  | Balance Sheet Location |  | Fair Value |  |  | Balance Sheet Location |  | Fair Value |
Derivatives designated as hedging instruments |  |  |  |  |  |  |  |
Other: Interest rate swaps |  | Current Assets: Other |  | $ | 10.0 |  |  | Current Liabilities: Other |  | $ | — |
Subtotal |  |  |  |  | 10.0 |  |  |  |  |  | — |
Derivatives not designated as hedging instruments |  |  |  |  |  |  |  |
Gas Utility: |  |  |  |  |  |  |  |  |  |
Natural gas contracts |  | Current Assets: Other |  |  | 2.9 |  |  | Current Liabilities: Other |  |  | 25.9 |
Gas Marketing: |  |  |  |  |  |  |  |  |  |
NYMEX / ICE natural gas contracts |  | Current Assets: Other |  |  | 11.3 |  |  | Current Liabilities: Other |  |  | 17.7 |
|  | Deferred Charges and Other Assets: Other |  |  | 0.1 |  |  | Deferred Credits and Other Liabilities: Other |  |  | 1.3 |
Natural gas commodity |  | Current Assets: Other |  |  | 42.8 |  |  | Current Liabilities: Other |  |  | 15.6 |
|  | Deferred Charges and Other Assets: Other |  |  | 2.0 |  |  | Deferred Credits and Other Liabilities: Other |  |  | 1.1 |
Subtotal |  |  |  |  | 59.1 |  |  |  |  |  | 61.6 |
Total derivatives |  |  |  | $ | 69.1 |  |  |  |  | $ | 61.6 |
September 30, 2024 |  |  |  |  |  |  |  |  |  |
Derivatives designated as hedging instruments |  |  |  |  |  |  |  |
Other: Interest rate swaps |  | Current Assets: Other |  | $ | 0.8 |  |  | Current Liabilities: Other |  | $ | 1.5 |
Subtotal |  |  |  |  | 0.8 |  |  |  |  |  | 1.5 |
Derivatives not designated as hedging instruments |  |  |  |  |  |  |  |
Gas Utility: |  |  |  |  |  |  |  |  |  |
Natural gas contracts |  | Current Assets: Other |  |  | 3.4 |  |  | Current Liabilities: Other |  |  | 13.6 |
Gasoline and heating oil contracts |  | Current Assets: Other |  |  | — |  |  |  |  |  | — |
Gas Marketing: |  |  |  |  |  |  |  |  |  |
NYMEX / ICE natural gas contracts |  | Current Assets: Other |  |  | 6.2 |  |  | Current Liabilities: Other |  |  | 13.7 |
|  | Deferred Charges and Other Assets: Other |  |  | 0.8 |  |  | Deferred Credits and Other Liabilities: Other |  |  | 4.0 |
Natural gas commodity |  | Current Assets: Other |  |  | 42.1 |  |  | Current Liabilities: Other |  |  | 19.8 |
|  | Deferred Charges and Other Assets: Other |  |  | 3.9 |  |  | Deferred Credits and Other Liabilities: Other |  |  | 4.7 |
Subtotal |  |  |  |  | 56.4 |  |  |  |  |  | 55.8 |
Total derivatives |  |  |  | $ | 57.2 |  |  |  |  | $ | 57.3 |

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* The fair values of Derivative Assets and Derivative Liabilities exclude the fair value of cash margin receivables or payables with counterparties subject to netting arrangements. Fair value amounts of derivative contracts (including the fair value amounts of cash margin receivables and payables) for which there is a legal right to set off are presented net on the balance sheets. As such, the gross balances presented in the table above are not indicative of the Company’s net economic exposure. Refer to Note 9, Fair Value Measurements, for information on the valuation of derivative instruments.

Following is a reconciliation of the amounts in the tables above to the amounts presented in the consolidated balance sheets:

|  | 2025 |  |  | 2024 |
Fair value of derivative assets presented above |  | $ | 69.1 |  |  | $ | 57.2 |
Fair value of cash margin receivable offset with derivatives |  |  | 6.0 |  |  |  | 11.1 |
Netting of assets and liabilities with the same counterparty |  |  | (23.0 | ) |  |  | (25.0 | )
Total |  | $ | 52.1 |  |  | $ | 43.3 |
Derivative Instrument Assets, per Consolidated Balance Sheets: |  |  |  |  |  |
Current Assets: Othe r |  | $ | 50.1 |  |  | $ | 39.5 |
Deferred Charges and Other Assets: Other |  |  | 2.0 |  |  |  | 3.8 |
Total |  | $ | 52.1 |  |  | $ | 43.3 |
Fair value of derivative liabilities presented above |  | $ | 61.6 |  |  | $ | 57.3 |
Netting of assets and liabilities with the same counterparty |  |  | (23.0 | ) |  |  | (25.0 | )
Total |  | $ | 38.6 |  |  | $ | 32.3 |
Derivative Instrument Liabilities, per Consolidated Balance Sheets: |  |  |  |  |  |
Current Liabilities: Other |  | $ | 37.5 |  |  | $ | 27.6 |
Deferred Credits and Other Liabilities: Other |  |  | 1.1 |  |  |  | 4.7 |
Total |  | $ | 38.6 |  |  | $ | 32.3 |

Spire Missouri

Spire Missouri has a risk management policy to utilize various derivatives, including futures contracts, exchange-traded options, swaps and over-the-counter instruments for the explicit purpose of managing price risk associated with purchasing and delivering natural gas on a regular basis to customers in accordance with its tariffs. The objective of this policy is to limit Spire Missouri’s exposure to natural gas price volatility and to manage, hedge and mitigate substantial price risk. This policy strictly prohibits speculation and permits Spire Missouri to hedge current physical natural gas purchase commitments or forecasted or anticipated future peak (maximum) physical need for natural gas delivered. Costs and cost reductions, including carrying costs, associated with Spire Missouri’s use of natural gas derivative instruments are allowed to be passed on to Spire Missouri customers through the operation of its PGA clause, through which the MoPSC allows Spire Missouri to recover gas supply costs, subject to prudence review by the MoPSC. Accordingly, Spire Missouri does not expect any adverse earnings impact as a result of the use of these derivative instruments.

Spire Missouri does not designate these instruments as hedging instruments for financial reporting purposes because gains or losses associated with the use of these derivative instruments are deferred and recorded as regulatory assets or regulatory liabilities pursuant to ASC Topic 980, Regulated Operations, and, as a result, have no direct impact on the statements of income.

The timing of the operation of the PGA clause may cause interim variations in short-term cash flows, because Spire Missouri is subject to cash margin requirements associated with changes in the values of these instruments. Nevertheless, carrying costs associated with such requirements are recovered through the PGA clause.

From time to time, Spire Missouri purchases NYMEX futures and options contracts to help stabilize operating costs associated with forecasted purchases of gasoline and diesel fuels used to power vehicles and equipment used in the course of its business. The gains and losses on these contracts are not subject to Spire Missouri’s PGA clause. At September 30, 2025, Spire Missouri did not have a material amount of gasoline futures contracts outstanding.

Derivative instruments designated as cash flow hedges of forecasted transactions are recognized on the balance sheets at fair value and the change in the fair value of the effective portion of these hedge instruments is recorded, net of income tax, in OCI. AOCI is a component of Total Common Stock Equity. Amounts are reclassified from AOCI into earnings when the hedged items affect net income, using the same revenue or expense category that the hedged item impacts. As in both 2024 and 2023, there will be no reclassifications into the statements of income during fiscal 20 26. Cash flows from hedging transactions are classified in the same category as the cash flows from the items that are being hedged in the statements of cash flows.

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Spire Missouri’s derivative instruments consist primarily of NYMEX positions. The NYMEX is the primary national commodities exchange on which natural gas derivatives are traded. Open NYMEX natural gas futures positions at September 30, 2025 and 2024 were as follows:

|  | September 30, 2025 |  |  | September 30, 2024 |
|  | Notional (MMBtu millions) |  |  | Maximum Term (Months) |  |  | Notional (MMBtu millions) |  |  | Maximum Term (Months) |
Natural gas futures purchased |  |  | 32.3 |  |  |  | 12 |  |  |  | 34.6 |  |  |  | 12 |

At September 30, 2025, Spire Missouri had also had 9.78 million MMBtu of other price mitigation in place through the use of NYMEX natural gas option-based strategies.

Gains and losses on Spire Missouri’s natural gas derivative instruments, which are not designated as hedging instruments for financial reporting purposes, are deferred pursuant to the Spire Missouri’s PGA clauses and initially recorded as regulatory assets or regulatory liabilities. Such amounts are recognized in the statements of income as a component of natural gas operating expenses when they are recovered through the PGA clause and reflected in customer billings.

Fair Value of Derivative Instruments in the Balance Sheets |
|  | Derivative Assets* |  |  | Derivative Liabilities* |
September 30, 2025 |  | Balance Sheet Location |  | Fair Value |  |  | Balance Sheet Location |  | Fair Value |
Derivatives not designated as hedging instruments |  |  |  |  |  |  |  |
Natural gas contracts |  | Current Assets: Other |  | $ | 2.9 |  |  | Current Liabilities: Other |  | $ | 25.9 |
Total derivatives |  |  |  | $ | 2.9 |  |  |  |  | $ | 25.9 |
September 30, 2024 |  |  |  |  |  |  |  |  |  |
Derivatives not designated as hedging instruments |  |  |  |  |  |  |  |
Natural gas contracts |  | Current Assets: Other |  | $ | 3.4 |  |  | Current Liabilities: Other |  | $ | 13.6 |
Gasoline and heating oil contracts |  | Current Assets: Other |  |  | — |  |  |  |  |  | — |
Total derivatives |  |  |  | $ | 3.4 |  |  |  |  | $ | 13.6 |

* The fair values of Derivative Assets and Derivative Liabilities exclude the fair value of cash margin receivables or payables with counterparties subject to netting arrangements. Fair value amounts of derivative contracts (including the fair value amounts of cash margin receivables and payables) for which there is a legal right to set off are presented net on the balance sheets. As such, the gross balances presented in the table above are not indicative of Spire Missouri’s net economic exposure. Refer to Note 9, Fair Value Measurements, for information on the valuation of derivative instruments.

Following is a reconciliation of the amounts in the tables above to the amounts presented in Spire Missouri’s balance sheets:

|  | 2025 |  |  | 2024 |
Fair value of derivative assets presented above |  | $ | 2.9 |  |  | $ | 3.4 |
Fair value of cash margin receivable offset with derivatives |  |  | (1.6 | ) |  |  | 0.4 |
Netting of assets and liabilities with the same counterparty |  |  | (1.3 | ) |  |  | (3.8 | )
Total |  | $ | — |  |  | $ | — |
Fair value of derivative liabilities presented above |  | $ | 25.9 |  |  | $ | 13.6 |
Netting of assets and liabilities with the same counterparty |  |  | (1.3 | ) |  |  | (3.8 | )
Total |  |  | 24.6 |  |  |  | 9.8 |
Derivative Instrument Liabilities, per Balance Sheets: |  |  |  |  |  |
Current Liabilities: Other |  | $ | 24.6 |  |  | $ | 9.8 |
Deferred Credits and Other Liabilities: Other |  |  | - |  |  |  | — |
Total |  | $ | 24.6 |  |  | $ | 9.8 |

Spire Alabama

Spire Alabama periodically employs a gasoline derivative program to help stabilize operating costs associated with forecasted purchases of gasoline and diesel fuels used to power vehicles and equipment used in the course of its business. The gains or losses on these derivative instruments are not subject to Spire Alabama’s GSA rider. There were no such contracts outstanding as of September 30, 2025 and 2024.

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11. CONCENTRATIONS OF CREDIT RISK

Spire’s Gas Utility segment serves 1.7 million customers in three states across multiple rate classes resulting in a significant amount of revenue diversity. Credit risk is mitigated by the high percentage of residential customers as well as the geographic diversity of the Utilities, though customers for each of the Utilities are concentrated in a single state.

Spire Marketing’s accounts receivable attributable to utility companies and their marketing affiliates totaled $52.3 at September 30, 2025. The concentration of transactions with these counterparties has the potential to affect the Company’s overall exposure to credit risk, either positively or negatively, in that customers in this group may be affected similarly by changes in economic, industry, or other conditions. Spire Marketing also has concentrations of credit risk with certain individually significant counterparties. At September 30, 2025, the amounts included in accounts receivable from its five largest counterparties (in terms of net accounts receivable exposure) totaled $25.6. Three of these five counterparties are investment-grade-rated integrated utilities, one is a liquefied natural gas project facility with a senior debt issue rating one notch below investment-grade with a positive outlook, and one is a utility marketing affiliate which is not rated but whose owners are all investment-grade public power companies.

To manage these risks, Spire Marketing has established procedures to determine the creditworthiness of its counterparties. These procedures include obtaining credit ratings and credit reports, analyzing counterparty financial statements to assess financial condition, and considering the industry environment in which the counterparty operates. This information is monitored on an ongoing basis. In some instances, Spire Marketing may require credit assurances such as prepayments, letters of credit, or parental guaranties. In addition, Spire Marketing may enter into netting arrangements to mitigate credit risk with counterparties in the energy industry with whom it conducts both sales and purchases of natural gas. Where there is no netting arrangement, Spire Marketing records accounts receivable, accounts payable, and prepayments for physical sales and purchases of natural gas on a gross basis. Sales are typically made on an unsecured credit basis with payment due the month following delivery. Accounts receivable amounts are closely monitored and provisions for uncollectible amounts are accrued when losses are probable.

12. INCOME TAXES

The Company, Spire Missouri, and Spire Alabama are subject to federal income tax as well as income tax in various state and local jurisdictions. Spire files a consolidated federal income tax return and various state income tax returns and allocates income taxes to Spire Missouri, Spire Alabama and its other subsidiaries as if each entity were a separate taxpayer.

The provision for income taxes during the fiscal years ended September 30, 2025, 2024, and 2023 was as follows:

|  | Spire |  |  | Spire Missouri |  |  | Spire Alabama |
|  | 2025 |  |  | 2024 |  |  | 2023 |  |  | 2025 |  |  | 2024 |  |  | 2023 |  |  | 2025 |  |  | 2024 |  |  | 2023 |
Federal: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Current |  | $ | 1.7 |  |  | $ | 0.2 |  |  | $ | 0.7 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |
Deferred |  |  | 46.3 |  |  |  | 46.1 |  |  |  | 30.4 |  |  |  | 12.4 |  |  |  | 13.5 |  |  |  | 10.1 |  |  |  | 22.9 |  |  |  | 21.7 |  |  |  | 15.8 |
Investment tax credits |  |  | (0.2 | ) |  |  | (0.2 | ) |  |  | (0.2 | ) |  |  | (0.2 | ) |  |  | (0.2 | ) |  |  | (0.2 | ) |  |  | — |  |  |  | — |  |  |  | — |
State and local: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Current |  |  | 0.7 |  |  |  | 1.5 |  |  |  | 1.2 |  |  |  | 0.2 |  |  |  | 0.9 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Deferred |  |  | 11.2 |  |  |  | 11.1 |  |  |  | 6.7 |  |  |  | 1.4 |  |  |  | 1.5 |  |  |  | 1.7 |  |  |  | 5.5 |  |  |  | 5.2 |  |  |  | 4.5 |
Total income tax expense |  | $ | 59.7 |  |  | $ | 58.7 |  |  | $ | 38.8 |  |  | $ | 13.8 |  |  | $ | 15.7 |  |  | $ | 11.6 |  |  | $ | 28.4 |  |  | $ | 26.9 |  |  | $ | 20.3 |

The effective income tax rate varied from the federal statutory income tax rate for each year due to the following:

|  | Spire |  |  | Spire Missouri |  |  | Spire Alabama |
|  | 2025 |  |  | 2024 |  |  | 2023 |  |  | 2025 |  |  | 2024 |  |  | 2023 |  |  | 2025 |  |  | 2024 |  |  | 2023 |
Federal income tax statutory rate |  |  | 21.0 | % |  |  | 21.0 | % |  |  | 21.0 | % |  |  | 21.0 | % |  |  | 21.0 | % |  |  | 21.0 | % |  |  | 21.0 | % |  |  | 21.0 | % |  |  | 21.0 | %
State and local income taxes, net of federal income tax benefits |  |  | 3.7 |  |  |  | 3.7 |  |  |  | 3.7 |  |  |  | 2.6 |  |  |  | 2.6 |  |  |  | 2.6 |  |  |  | 4.1 |  |  |  | 4.1 |  |  |  | 4.1 |
Certain expenses capitalized on books and deducted on tax return |  |  | (1.1 | ) |  |  | (1.2 | ) |  |  | (1.4 | ) |  |  | (2.5 | ) |  |  | (2.7 | ) |  |  | (2.7 | ) |  |  | — |  |  |  | — |  |  |  | — |
Tax credits * |  |  | (0.8 | ) |  |  | (0.9 | ) |  |  | (3.3 | ) |  |  | (1.1 | ) |  |  | (1.1 | ) |  |  | (4.2 | ) |  |  | (0.3 | ) |  |  | (0.3 | ) |  |  | (1.9 | )
Amortization of excess deferred taxes |  |  | (3.1 | ) |  |  | (3.3 | ) |  |  | (5.1 | ) |  |  | (7.0 | ) |  |  | (7.4 | ) |  |  | (7.7 | ) |  |  | 0.1 |  |  |  | 0.2 |  |  |  | 0.2 |
Taxes related to prior years |  |  | (1.3 | ) |  |  | — |  |  |  | — |  |  |  | (2.9 | ) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Other items – net |  |  | (0.4 | ) |  |  | (0.3 | ) |  |  | 0.2 |  |  |  | (0.4 | ) |  |  | (0.7 | ) |  |  | — |  |  |  | 0.1 |  |  |  | 0.1 |  |  |  | 0.1 |
Effective income tax rate |  |  | 18.0 | % |  |  | 19.0 | % |  |  | 15.1 | % |  |  | 9.7 | % |  |  | 11.7 | % |  |  | 9.0 | % |  |  | 25.0 | % |  |  | 25.1 | % |  |  | 23.5 | %

* In 2023, the Company completed a research and development study which encompassed fiscal years 2014 to 2022.

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The significant items comprising the net deferred tax liability or asset as of September 30 were as follows:

|  | Spire |  |  | Spire Missouri |  |  | Spire Alabama |
|  | 2025 |  |  | 2024 |  |  | 2025 |  |  | 2024 |  |  | 2025 |  |  | 2024 |
Deferred tax assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating losses |  | $ | 150.1 |  |  | $ | 182.2 |  |  | $ | 1.5 |  |  | $ | 24.7 |  |  | $ | 146.1 |  |  | $ | 153.0 |
Goodwill |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 29.7 |  |  |  | 44.4 |
Pension and other postretirement benefits |  |  | 52.6 |  |  |  | 58.6 |  |  |  | 36.0 |  |  |  | 39.3 |  |  |  | 14.8 |  |  |  | 17.1 |
Regulatory amount due to customers, net |  |  | 23.9 |  |  |  | 27.1 |  |  |  | 21.4 |  |  |  | 24.5 |  |  |  | — |  |  |  | 2.3 |
Reserves not currently deductible |  |  | 24.9 |  |  |  | 0.5 |  |  |  | — |  |  |  | — |  |  |  | 3.4 |  |  |  | 2.9 |
Other |  |  | 73.5 |  |  |  | 43.3 |  |  |  | 16.7 |  |  |  | 12.3 |  |  |  | 6.0 |  |  |  | 2.1 |
Total deferred tax assets |  |  | 325.0 |  |  |  | 311.7 |  |  |  | 75.6 |  |  |  | 100.8 |  |  |  | 200.0 |  |  |  | 221.8 |
Deferred tax liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Relating to property |  |  | (912.3 | ) |  |  | (842.2 | ) |  |  | (572.6 | ) |  |  | (531.2 | ) |  |  | (238.1 | ) |  |  | (230.0 | )
Regulatory pension and other postretirement benefits |  |  | (54.4 | ) |  |  | (60.8 | ) |  |  | (27.2 | ) |  |  | (33.8 | ) |  |  | (24.0 | ) |  |  | (25.6 | )
Deferred gas costs |  |  | (10.7 | ) |  |  | (19.9 | ) |  |  | (8.2 | ) |  |  | (17.7 | ) |  |  | — |  |  |  | — |
Other *** |  |  | (235.0 | ) |  |  | (197.2 | ) |  |  | (66.3 | ) |  |  | (85.7 | ) |  |  | (2.0 | ) |  |  | (2.1 | )
Total deferred tax liabilities |  |  | (1,212.4 | ) |  |  | (1,120.1 | ) |  |  | (674.3 | ) |  |  | (668.4 | ) |  |  | (264.1 | ) |  |  | (257.7 | )
Net deferred tax (liability) asset |  | $ | (887.4 | ) |  | $ | (808.4 | ) |  | $ | (598.7 | ) |  | $ | (567.6 | ) |  | $ | (64.1 | ) |  | $ | (35.9 | )

*** For Spire, Other consists primarily of goodwill-related liabilities.

As indicated in Note 1, Summary of Significant Accounting Policies, the Company’s regulated operations accounting for income taxes is impacted by ASC Topic 980, Regulated Operations.

On April 14, 2023, the IRS issued Revenue Procedure 2023-15 that provides a safe harbor method of accounting that taxpayers may use to determine whether to deduct or capitalize expenditures to repair, maintain, replace, or improve natural gas transmission and distribution property. Under the revenue procedure, the method of accounting will depend on the property’s classification as linear transmission property, linear distribution property, or non-linear property. The revenue procedure may be adopted in tax years ending after May 1, 2023. The Company adopted the revenue procedure for Spire Alabama, Spire Gulf, and Spire Mississippi, with the filing of its tax return for the year ended September 30, 2024. The Company is still evaluating the revenue procedure for Spire Missouri.

In assessing whether deferred tax assets are realizable, management considers whether it is more likely than not that some portion or all of the deferred tax assets will not be realized. Management considers all significant available positive and negative evidence, including the existence of losses in recent years, the timing of deferred tax liability reversals, projected future taxable income, taxable income in carryback years, and tax planning strategies to assess the need for a valuation allowance. Based upon this evidence, management believes it is more likely than not the Company, Spire Missouri and Spire Alabama will realize the benefits of these deferred tax assets.

As of September 30, 2025, Spire, and on a separate company basis, Spire Missouri and Spire Alabama, had carryforwards as shown below.

|  | Spire |  |  | Spire Missouri |  |  | Spire Alabama |
Federal and state loss carryforwards |  | $ | 646.1 |  |  | $ | 9.7 |  |  | $ | 583.3 |
Tax credit carryforwards |  |  | 18.9 |  |  |  | 8.8 |  |  |  | 2.7 |

For federal tax purposes, Spire Missouri’s and Spire Alabama’s loss carryforwards may be utilized against income from another member of the consolidated group. The loss carryforwards begin to expire in fiscal 2030 for certain state purposes and fiscal 2037 for federal and other state purposes. The tax credit carryforwards are expected to be utilized prior to their expiration.

The Company, Spire Missouri and Spire Alabama recognize the tax benefit from a tax position only if it is at least more likely than not that the tax position will be sustained on examination by the taxing authorities, based on the technical merits of the position. Unrecognized tax benefits are reported as a reduction of a deferred tax asset for an operating loss carryforward to the extent the recognition of the benefit would impact the operating loss carryforward, pursuant to ASU 2013-11. The following table presents a reconciliation of the beginning and ending balances of unrecognized tax benefits.

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|  | Spire |  |  | Spire Missouri |  |  | Spire Alabama |
|  | 2025 |  |  | 2024 |  |  | 2023 |  |  | 2025 |  |  | 2024 |  |  | 2023 |  |  | 2025 |  |  | 2024 |  |  | 2023 |
Unrecognized tax benefits, beginning of year |  | $ | 26.3 |  |  | $ | 23.8 |  |  | $ | 19.6 |  |  | $ | 25.3 |  |  | $ | 22.9 |  |  | $ | 19.3 |  |  | $ | 0.3 |  |  | $ | 0.3 |  |  | $ | — |
Increases related to tax positions taken in current year |  |  | 0.6 |  |  |  | 2.6 |  |  |  | 4.2 |  |  |  | 0.2 |  |  |  | 2.4 |  |  |  | 3.6 |  |  |  | — |  |  |  | — |  |  |  | 0.3 |
Decreases related to tax positions taken in prior years |  |  | (24.2 | ) |  |  | — |  |  |  | — |  |  |  | (24.2 | ) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Reductions due to lapse of applicable statute of limitations |  |  | — |  |  |  | (0.1 | ) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Unrecognized tax benefits, end of year |  | $ | 2.7 |  |  | $ | 26.3 |  |  | $ | 23.8 |  |  | $ | 1.3 |  |  | $ | 25.3 |  |  | $ | 22.9 |  |  | $ | 0.3 |  |  | $ | 0.3 |  |  | $ | 0.3 |

As of September 30, 2025 and 2024, the amounts of unrecognized tax benefits which, if recognized, would affect the effective tax rate were $2.7 and $6.2, respectively, for the Company, $1.3 and $5.3, respectively, for Spire Missouri, and $0.3 and $0.3, respectively, for Spire Alabama. It is reasonably possible that events will occur in the next 12 months that could increase or decrease the amount of the unrecognized tax benefits. The Company, Spire Missouri, and Spire Alabama do not expect that any such change will be significant to the balance sheets and results of operations.

The Company, Spire Missouri, and Spire Alabama record potential interest and penalties related to uncertain tax positions as interest expense and other income deductions, respectively. As of September 30, 2025 and 2024, interest accrued associated with uncertain tax positions was de minimis, and no penalties were accrued.

The Company, Spire Missouri, and Spire Alabama are no longer subject to examination for fiscal years prior to 2022, except to the extent the net operating losses from prior years are reviewed.

On July 4, 2025, the One Big Beautiful Bill Act (the Act) was signed into law. The Company is evaluating the impact of the Act and believes it will not have a material impact on the Company’s financial position, results of operations or cash flow. For fiscal 2025, the impact was not material.

13. PENSION PLANS AND OTHER POSTRETIREMENT BENEFITS

Pension Plans

Spire and the Utilities maintain pension plans for their employees. Spire Missouri and Spire Alabama have non-contributory, defined benefit, trusteed forms of pension plans covering the majority of their employees. Qualified plan assets are comprised of mutual and commingled funds consisting of U.S. equities with varying strategies, global equities, alternative investments, and fixed income investments.

The net periodic pension cost includes components shown in the following table. The components other than the service costs and regulatory adjustment are presented in “Other Income, Net” in the income statement, except for Spire Alabama’s losses on lump-sum settlements. Such losses are capitalized in regulatory balances and amortized over the remaining actuarial life of individuals in the plan, and that amortization is presented in “Other Income, Net.”

|  | Spire |  |  | Spire Missouri |  |  | Spire Alabama |
|  | 2025 |  |  | 2024 |  |  | 2023 |  |  | 2025 |  |  | 2024 |  |  | 2023 |  |  | 2025 |  |  | 2024 |  |  | 2023 |
Service cost – benefits earned during the period |  | $ | 17.6 |  |  | $ | 15.7 |  |  | $ | 16.3 |  |  | $ | 11.4 |  |  | $ | 10.4 |  |  | $ | 11.4 |  |  | $ | 5.5 |  |  | $ | 4.6 |  |  | $ | 4.2 |
Interest cost on projected benefit obligation |  |  | 23.5 |  |  |  | 26.7 |  |  |  | 25.1 |  |  |  | 15.8 |  |  |  | 18.9 |  |  |  | 17.8 |  |  |  | 5.1 |  |  |  | 5.1 |  |  |  | 4.8 |
Expected return on plan assets |  |  | (25.9 | ) |  |  | (24.8 | ) |  |  | (24.5 | ) |  |  | (17.6 | ) |  |  | (17.0 | ) |  |  | (18.0 | ) |  |  | (5.3 | ) |  |  | (4.8 | ) |  |  | (3.5 | )
Amortization of prior service credit |  |  | (4.5 | ) |  |  | (4.5 | ) |  |  | (4.5 | ) |  |  | (1.9 | ) |  |  | (1.9 | ) |  |  | (1.9 | ) |  |  | (2.4 | ) |  |  | (2.4 | ) |  |  | (2.4 | )
Amortization of actuarial loss |  |  | 6.5 |  |  |  | 6.4 |  |  |  | 6.6 |  |  |  | 4.1 |  |  |  | 5.9 |  |  |  | 6.1 |  |  |  | 2.4 |  |  |  | 1.0 |  |  |  | 0.9 |
Special termination benefits |  |  | — |  |  |  | 2.6 |  |  |  | — |  |  |  | — |  |  |  | 2.6 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Loss on lump-sum settlements and curtailments |  |  | 0.4 |  |  |  | 12.9 |  |  |  | 9.7 |  |  |  | 0.4 |  |  |  | 12.9 |  |  |  | 0.6 |  |  |  | — |  |  |  | — |  |  |  | 9.1 |
Subtotal |  |  | 17.6 |  |  |  | 35.0 |  |  |  | 28.7 |  |  |  | 12.2 |  |  |  | 31.8 |  |  |  | 16.0 |  |  |  | 5.3 |  |  |  | 3.5 |  |  |  | 13.1 |
Regulatory adjustment |  |  | 36.3 |  |  |  | 18.4 |  |  |  | 26.3 |  |  |  | 29.6 |  |  |  | 10.8 |  |  |  | 27.1 |  |  |  | 5.8 |  |  |  | 6.7 |  |  |  | (1.7 | )
Net pension cost |  | $ | 53.9 |  |  | $ | 53.4 |  |  | $ | 55.0 |  |  | $ | 41.8 |  |  | $ | 42.6 |  |  | $ | 43.1 |  |  | $ | 11.1 |  |  | $ | 10.2 |  |  | $ | 11.4 |

Other changes in plan assets and pension benefit obligations recognized in other comprehensive income or loss include the following:

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|  | Spire |  |  | Spire Missouri |  |  | Spire Alabama |
|  | 2025 |  |  | 2024 |  |  | 2023 |  |  | 2025 |  |  | 2024 |  |  | 2023 |  |  | 2025 |  |  | 2024 |  |  | 2023 |
Current year actuarial (gain) loss |  | $ | (11.9 | ) |  | $ | 8.8 |  |  | $ | 14.5 |  |  | $ | (9.9 | ) |  | $ | (0.9 | ) |  | $ | 5.7 |  |  | $ | (0.8 | ) |  | $ | 8.5 |  |  | $ | 9.0 |
Amortization of actuarial loss |  |  | (6.5 | ) |  |  | (6.4 | ) |  |  | (6.6 | ) |  |  | (4.1 | ) |  |  | (5.9 | ) |  |  | (6.1 | ) |  |  | (2.4 | ) |  |  | (1.0 | ) |  |  | (0.9 | )
Acceleration of loss recognized due to settlement |  |  | (0.4 | ) |  |  | (12.9 | ) |  |  | (9.7 | ) |  |  | (0.4 | ) |  |  | (12.9 | ) |  |  | (0.6 | ) |  |  | — |  |  |  | — |  |  |  | (9.1 | )
Current year service credit |  |  | — |  |  |  | 0.2 |  |  |  | — |  |  |  | — |  |  |  | 0.2 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Amortization of prior service credit |  |  | 4.5 |  |  |  | 4.5 |  |  |  | 4.5 |  |  |  | 1.9 |  |  |  | 1.9 |  |  |  | 1.9 |  |  |  | 2.4 |  |  |  | 2.4 |  |  |  | 2.4 |
Subtotal |  |  | (14.3 | ) |  |  | (5.8 | ) |  |  | 2.7 |  |  |  | (12.5 | ) |  |  | (17.6 | ) |  |  | 0.9 |  |  |  | (0.8 | ) |  |  | 9.9 |  |  |  | 1.4 |
Regulatory adjustment |  |  | 13.0 |  |  |  | 5.2 |  |  |  | (2.8 | ) |  |  | 11.2 |  |  |  | 17.0 |  |  |  | (1.0 | ) |  |  | 0.8 |  |  |  | (9.9 | ) |  |  | (1.4 | )
Total recognized in OCI |  | $ | (1.3 | ) |  | $ | (0.6 | ) |  | $ | (0.1 | ) |  | $ | (1.3 | ) |  | $ | (0.6 | ) |  | $ | (0.1 | ) |  | $ | — |  |  | $ | — |  |  | $ | — |

Spire pension obligations are driven by separate plan and regulatory provisions governing Spire Missouri, Spire Alabama and Spire EnergySouth pension plans.

Pursuant to the provisions of Spire Missouri’s and Spire Alabama’s pension plans, pension obligations may be satisfied by monthly annuities, lump-sum cash payments, or special termination benefits. Lump-sum payments are recognized as settlements (which can result in gains or losses) only if the total of such payments exceeds the sum of service and interest costs in a specific year. Special termination benefits, when offered, are also recognized as settlements which can result in gains or losses.

In the fiscal year ended September 30, 2025 one Spire Missouri plan met the criteria for settlement recognition for lump sum payments, requiring re-measurement of the obligation under that plan using updated census data and assumptions for discount rate and mortality. For the remeasurements, the discount rate for the Missouri plan was updated to 5.55% at September 30, 2025 (from 5.1% at September 30, 2024). Total Spire Missouri lump sum payments recognized as settlements during fiscal 2025 were $1.5.

In the fiscal year ended September 30, 2024 two Spire Missouri plans met the criteria for settlement recognition for lump sum payments, with one of the plans also offering special termination benefits, requiring re-measurement of the obligation under those plans using updated census data and assumptions for discount rate and mortality. For the remeasurements, the discount rate for the Missouri plans were updated to 5.1% at September 30, 2024 (from 6.25% at September 30, 2023). Total Spire Missouri lump sum payments recognized as settlements during fiscal 2024 were $37.3.

Effective December 26, 2021, the pension cost for Spire Missouri’s western territory (Missouri West) included in customer rates was reduced from $5.5 to $4.4 per year. Effective December 26, 2022, the pension cost included in Spire Missouri’s eastern territory (Missouri East) customer rates was decreased from $32.4 to $29.9. The difference between these amounts and pension expense as calculated pursuant to the above and that otherwise would be included in the statements of income and statements of comprehensive income is deferred as a regulatory asset or regulatory liability.

Also effective December 26, 2022, Missouri East prepaid pension assets and other postretirement benefits that were included in rates at $11.0 per year for eight years were reduced to $6.9 per year, with the amortization period being reset for another eight years. Missouri West net liability for pension and other postretirement benefits that were previously reducing rates by $1.1 per year for eight years were reduced to a $0.8 reduction in rates per year, with the amortization period being reset for another eight years.

The following table shows the reconciliation of the beginning and ending balances of the pension benefit obligation at September 30:

|  | Spire |  |  | Spire Missouri |  |  | Spire Alabama |
|  | 2025 |  |  | 2024 |  |  | 2025 |  |  | 2024 |  |  | 2025 |  |  | 2024 |
Benefit obligation, beginning of year |  | $ | 469.7 |  |  | $ | 438.7 |  |  | $ | 319.7 |  |  | $ | 313.2 |  |  | $ | 97.9 |  |  | $ | 80.6 |
Service cost |  |  | 17.6 |  |  |  | 15.7 |  |  |  | 11.4 |  |  |  | 10.4 |  |  |  | 5.5 |  |  |  | 4.6 |
Interest cost |  |  | 23.5 |  |  |  | 26.7 |  |  |  | 15.8 |  |  |  | 18.9 |  |  |  | 5.1 |  |  |  | 5.1 |
Actuarial loss (gain) |  |  | (15.3 | ) |  |  | 46.0 |  |  |  | (8.5 | ) |  |  | 25.2 |  |  |  | (4.3 | ) |  |  | 14.3 |
Plan amendments |  |  | — |  |  |  | 0.2 |  |  |  | — |  |  |  | 0.2 |  |  |  | — |  |  |  | — |
Special termination benefits |  |  | — |  |  |  | 2.6 |  |  |  | — |  |  |  | 2.6 |  |  |  | — |  |  |  | — |
Settlement benefits paid |  |  | (1.5 | ) |  |  | (37.3 | ) |  |  | (1.5 | ) |  |  | (37.3 | ) |  |  | — |  |  |  | — |
Regular benefits paid |  |  | (43.8 | ) |  |  | (22.9 | ) |  |  | (29.7 | ) |  |  | (13.5 | ) |  |  | (11.2 | ) |  |  | (6.7 | )
Benefit obligation, end of year |  | $ | 450.2 |  |  | $ | 469.7 |  |  | $ | 307.2 |  |  | $ | 319.7 |  |  | $ | 93.0 |  |  | $ | 97.9 |
Accumulated benefit obligation, end of year |  | $ | 439.6 |  |  | $ | 459.4 |  |  | $ | 302.8 |  |  | $ | 314.7 |  |  | $ | 87.3 |  |  | $ | 92.9 |

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In 2025, all of the qualified plans experienced decreases to their respective benefit obligations. The Spire Qualified Missouri Plans experienced actuarial asset gains while Alabama plan experienced actuarial asset losses. Spire Missouri’s returns exceeded expectations while Alabama’s returns lagged expectations. The discount rates increased between 40 and 45 basis points compared to the prior fiscal year-end which led to liability gains. Assumed lump sum rates increased since the prior fiscal year end which decreased the liability for each pension plan and contributed to liability gains.

The following table sets forth the reconciliation of the beginning and ending balances of the fair value of plan assets at September 30:

|  | Spire |  |  | Spire Missouri |  |  | Spire Alabama |
|  | 2025 |  |  | 2024 |  |  | 2025 |  |  | 2024 |  |  | 2025 |  |  | 2024 |
Fair value of plan assets, beginning of year |  | $ | 374.8 |  |  | $ | 334.7 |  |  | $ | 259.8 |  |  | $ | 242.0 |  |  | $ | 69.9 |  |  | $ | 53.6 |
Actual return on plan assets |  |  | 22.4 |  |  |  | 61.8 |  |  |  | 19.0 |  |  |  | 43.2 |  |  |  | 1.8 |  |  |  | 10.4 |
Employer contributions |  |  | 75.8 |  |  |  | 38.5 |  |  |  | 37.2 |  |  |  | 25.4 |  |  |  | 30.1 |  |  |  | 12.6 |
Settlement benefits paid |  |  | (1.5 | ) |  |  | (37.3 | ) |  |  | (1.5 | ) |  |  | (37.3 | ) |  |  | — |  |  |  | — |
Regular benefits paid |  |  | (43.8 | ) |  |  | (22.9 | ) |  |  | (29.7 | ) |  |  | (13.5 | ) |  |  | (11.2 | ) |  |  | (6.7 | )
Fair value of plan assets, end of year |  | $ | 427.7 |  |  | $ | 374.8 |  |  | $ | 284.8 |  |  | $ | 259.8 |  |  | $ | 90.6 |  |  | $ | 69.9 |
Funded status of plans, end of year |  | $ | (22.5 | ) |  | $ | (94.9 | ) |  | $ | (22.4 | ) |  | $ | (59.9 | ) |  | $ | (2.4 | ) |  | $ | (28.0 | )

The following table sets forth the amounts recognized in the balance sheets at September 30:

|  | Spire |  |  | Spire Missouri |  |  | Spire Alabama |
|  | 2025 |  |  | 2024 |  |  | 2025 |  |  | 2024 |  |  | 2025 |  |  | 2024 |
Noncurrent assets |  | $ | 6.2 |  |  | $ | — |  |  | $ | 3.9 |  |  | $ | — |  |  | $ | — |  |  | $ | — |
Current liabilities |  |  | (0.6 | ) |  |  | (1.0 | ) |  |  | (0.6 | ) |  |  | (1.0 | ) |  |  | — |  |  |  | — |
Noncurrent liabilities |  |  | (28.1 | ) |  |  | (93.9 | ) |  |  | (25.7 | ) |  |  | (58.9 | ) |  |  | (2.4 | ) |  |  | (28.0 | )
Total |  | $ | (22.5 | ) |  | $ | (94.9 | ) |  | $ | (22.4 | ) |  | $ | (59.9 | ) |  | $ | (2.4 | ) |  | $ | (28.0 | )

Pre-tax amounts recognized in accumulated other comprehensive loss no t yet recognized as components of net periodic pension cost consist of:

|  | Spire |  |  | Spire Missouri |  |  | Spire Alabama |
|  | 2025 |  |  | 2024 |  |  | 2025 |  |  | 2024 |  |  | 2025 |  |  | 2024 |
Net actuarial loss |  | $ | 100.9 |  |  | $ | 119.7 |  |  | $ | 58.5 |  |  | $ | 72.9 |  |  | $ | 44.5 |  |  | $ | 47.7 |
Prior service credit |  |  | (22.0 | ) |  |  | (26.4 | ) |  |  | (12.1 | ) |  |  | (14.0 | ) |  |  | (9.1 | ) |  |  | (11.5 | )
Subtotal |  |  | 78.9 |  |  |  | 93.3 |  |  |  | 46.4 |  |  |  | 58.9 |  |  |  | 35.4 |  |  |  | 36.2 |
Adjustments for amounts included in regulatory assets |  |  | (77.8 | ) |  |  | (90.8 | ) |  |  | (45.3 | ) |  |  | (56.4 | ) |  |  | (35.4 | ) |  |  | (36.2 | )
Total |  | $ | 1.1 |  |  | $ | 2.5 |  |  | $ | 1.1 |  |  | $ | 2.5 |  |  | $ | — |  |  | $ | — |

The assumptions used to calculate net periodic pension costs for Spire Missouri are as follows:

|  | 2025 |  | 2024 |  | 2023
Weighted average discount rate - Spire Missouri East plan |  | 5.10% |  | 6.25% |  | 5.70%
Weighted average discount rate - Spire Missouri West plan |  | 5.05% |  | 6.30% |  | 5.80%
Weighted average rate of future compensation increase |  | 3.50% |  | 3.00% |  | 3.00%
Expected long-term rate of return on plan assets |  | 6.50% |  | 6.50% |  | 6.50%

The assumptions used to calculate net periodic pension costs for Spire Alabama are as follows:

|  | 2025 |  | 2024 |  | 2023
Weighted average discount rate |  | 5.10% |  | 6.20%/6.25% |  | 5.65%/5.70%
Weighted average rate of future compensation increase |  | 3.50% |  | 3.00% |  | 3.00%
Expected long-term rate of return on plan assets |  | 6.75% |  | 6.75% |  | 6.50%

The discount rate is based on long-term, high quality bond indices at the measurement date. The expected long-term rate of return on plan assets is based on historical and projected rates of return for current and planned asset classes in the investment portfolio. Assumed projected rates of return for each asset class were selected after analyzing historical experience and future expectations of the returns. The overall expected rate of return for the portfolio was developed based on the target allocation for each class.

The assumptions used to calculate the benefit obligations are as follows:

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|  | 2025 |  | 2024
Weighted average discount rate - Spire Missouri East plan |  | 5.55% |  | 5.10%
Weighted average discount rate - Spire Missouri West plan |  | 5.45% |  | 5.05%
Weighted average discount rate - Spire Alabama plans |  | 5.55% |  | 5.10%
Weighted average rate of future compensation increase (all plans) |  | 3.50% |  | 3.50%
Cash balance interest crediting rate - Spire Alabama / Spire Missouri |  | 4.25% |  | 4.25%

The following table sets forth the year-end projected benefit obligation, accumulated benefit obligation, and fair value of plan assets for plans that have a projected benefit obligation and an accumulated benefit obligation in excess of plan assets:

|  | Spire |  |  | Spire Missouri |  |  | Spire Alabama |
|  | 2025 |  |  | 2024 |  |  | 2025 |  |  | 2024 |  |  | 2025 |  |  | 2024 |
Projected benefit obligation |  | $ | 450.2 |  |  | $ | 469.7 |  |  | $ | 307.2 |  |  | $ | 319.7 |  |  | $ | 93.0 |  |  | $ | 97.9 |
Accumulated benefit obligation |  |  | 439.6 |  |  |  | 459.4 |  |  |  | 302.8 |  |  |  | 314.7 |  |  |  | 87.3 |  |  |  | 92.9 |
Fair value of plan assets |  |  | 427.7 |  |  |  | 374.8 |  |  |  | 284.8 |  |  |  | 259.8 |  |  |  | 90.6 |  |  |  | 69.9 |

The following tables set forth the targeted and actual plan assets by category as of September 30 of each year for Spire Missouri and Spire Alabama:

Spire Missouri |  | 2025 Target |  |  | 2025 Actual |  |  | 2024 Target |  |  | 2024 Actual |
Return seeking assets |  |  | 70.0 | % |  |  | 56.6 | % |  |  | 70.0 | % |  |  | 71.3 | %
Liability hedging assets |  |  | 30.0 | % |  |  | 40.4 | % |  |  | 30.0 | % |  |  | 24.3 | %
Cash and cash equivalents |  |  | — | % |  |  | 3.0 | % |  |  | — | % |  |  | 4.4 | %
Total |  |  | 100.0 | % |  |  | 100.0 | % |  |  | 100.0 | % |  |  | 100.0 | %

Spire Alabama |  | 2025 Target |  |  | 2025 Actual |  |  | 2024 Target |  |  | 2024 Actual |
Return seeking assets |  |  | 75.0 | % |  |  | 72.0 | % |  |  | 75.0 | % |  |  | 74.9 | %
Liability hedging assets |  |  | 25.0 | % |  |  | 16.8 | % |  |  | 25.0 | % |  |  | 22.6 | %
Cash and cash equivalents |  |  | — | % |  |  | 11.2 | % |  |  | — | % |  |  | 2.5 | %
Total |  |  | 100.0 | % |  |  | 100.0 | % |  |  | 100.0 | % |  |  | 100.0 | %

The Spire Inc. Retirement Plans Committee is responsible for the administration of the various plans, and all payments under the plans require direction of that committee. The Spire Inc. Defined Benefit Plan Investment Review Committee utilizes an Outsourced Chief Investment Officer (OCIO) model where investment decisions are outsourced to investment consultants (Willis Towers Watson), who in turn become co-fiduciaries with the committee.

For all plans, the Company employs a total return investment approach whereby a mix of equities and fixed income investments are used to maximize the long-term return of plan assets with a prudent level of risk. Risk tolerance is established through consideration of plan liabilities, plan funded status, corporate financial condition and market conditions. The Company has developed an investment strategy that focuses on asset allocation, diversification and quality guidelines. The investment goals are to obtain an adequate level of return to meet future obligations of the plan by providing above average risk-adjusted returns with a risk exposure in the mid-range of comparable funds. Comparative market and peer group benchmarks are utilized to ensure that investment managers are performing satisfactorily. The Company seeks to maintain an appropriate level of diversification to minimize the risk of large losses in a single asset class. Accordingly, plan assets for the pension plans do not have a concentration of assets in a single entity, industry, country, commodity or class of investment fund.

The following table sets forth expected pension benefit payments for the succeeding five fiscal years, and in aggregate for the five fiscal years thereafter, for Spire, Spire Missouri, and Spire Alabama:

|  | 2026 |  |  | 2027 |  |  | 2028 |  |  | 2029 |  |  | 2030 |  |  | 2031 – 2035 |
Spire |  | $ | 51.2 |  |  | $ | 46.0 |  |  | $ | 45.3 |  |  | $ | 42.9 |  |  | $ | 41.7 |  |  | $ | 196.2 |
Spire Missouri |  |  | 38.5 |  |  |  | 33.4 |  |  |  | 32.6 |  |  |  | 30.5 |  |  |  | 29.1 |  |  |  | 133.5 |
Spire Alabama |  |  | 8.8 |  |  |  | 8.8 |  |  |  | 8.5 |  |  |  | 8.4 |  |  |  | 8.5 |  |  |  | 42.8 |

The funding policy of Spire Missouri and Spire Alabama is to contribute an amount not less than the minimum required by government funding standards nor more than the maximum deductible amount for federal income tax purposes. Spire

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Missouri’s contributions to the pension plans in fiscal 2026 are anticipated to be $22.1 into the qualified trusts, and $0.6 into the non-qualified plans. Spire Alabama’s contributions to the pension plans in fiscal 2026 are anticipated to be $7.0 into the qualified trusts.

Other Postretirement Benefits

Spire and the Utilities provide certain life insurance benefits at retirement. Spire Missouri plans provide for medical insurance after early retirement until age 65. For retirements prior to January 1, 2015, the Missouri West plans provided medical insurance after retirement until death. The Spire Alabama plans provide medical insurance upon retirement until death for certain retirees depending on the type of employee and the date the employee was originally hired.

Net periodic postretirement benefit costs consist of the following components:

|  | Spire |  |  | Spire Missouri |  |  | Spire Alabama |
|  | 2025 |  |  | 2024 |  |  | 2023 |  |  | 2025 |  |  | 2024 |  |  | 2023 |  |  | 2025 |  |  | 2024 |  |  | 2023 |
Service cost – benefits earned during the period |  | $ | 4.2 |  |  | $ | 4.3 |  |  | $ | 4.8 |  |  | $ | 3.5 |  |  | $ | 3.5 |  |  | $ | 4.0 |  |  | $ | 0.7 |  |  | $ | 0.7 |  |  | $ | 0.7 |
Interest cost on accumulated postretirement benefit obligation |  |  | 7.3 |  |  |  | 8.9 |  |  |  | 8.5 |  |  |  | 5.2 |  |  |  | 6.6 |  |  |  | 6.5 |  |  |  | 2.0 |  |  |  | 2.1 |  |  |  | 1.8 |
Expected return on plan assets |  |  | (16.9 | ) |  |  | (16.0 | ) |  |  | (15.8 | ) |  |  | (11.1 | ) |  |  | (10.6 | ) |  |  | (10.5 | ) |  |  | (5.4 | ) |  |  | (5.1 | ) |  |  | (5.0 | )
Amortization of prior service cost (credit) |  |  | 0.2 |  |  |  | 0.3 |  |  |  | 0.3 |  |  |  | 0.3 |  |  |  | 0.6 |  |  |  | 0.6 |  |  |  | (0.1 | ) |  |  | (0.3 | ) |  |  | (0.3 | )
Amortization of actuarial gain |  |  | (5.8 | ) |  |  | (5.8 | ) |  |  | (4.0 | ) |  |  | (5.1 | ) |  |  | (5.2 | ) |  |  | (3.2 | ) |  |  | (0.1 | ) |  |  | (0.1 | ) |  |  | (0.5 | )
Special termination benefits |  |  | — |  |  |  | 6.1 |  |  |  | — |  |  |  | — |  |  |  | 6.1 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Subtotal |  |  | (11.0 | ) |  |  | (2.2 | ) |  |  | (6.2 | ) |  |  | (7.2 | ) |  |  | 1.0 |  |  |  | (2.6 | ) |  |  | (2.9 | ) |  |  | (2.7 | ) |  |  | (3.3 | )
Regulatory adjustment |  |  | 4.5 |  |  |  | (3.6 | ) |  |  | 0.6 |  |  |  | 6.2 |  |  |  | (1.9 | ) |  |  | 1.8 |  |  |  | (1.8 | ) |  |  | (1.8 | ) |  |  | (1.3 | )
Net postretirement benefit income |  | $ | (6.5 | ) |  | $ | (5.8 | ) |  | $ | (5.6 | ) |  | $ | (1.0 | ) |  | $ | (0.9 | ) |  | $ | (0.8 | ) |  | $ | (4.7 | ) |  | $ | (4.5 | ) |  | $ | (4.6 | )

Other changes in plan assets and postretirement benefit obligations recognized in OCI include the following:

|  | Spire |  |  | Spire Missouri |  |  | Spire Alabama |
|  | 2025 |  |  | 2024 |  |  | 2023 |  |  | 2025 |  |  | 2024 |  |  | 2023 |  |  | 2025 |  |  | 2024 |  |  | 2023 |
Current year actuarial (gain) loss |  | $ | (36.5 | ) |  | $ | (52.4 | ) |  | $ | (24.4 | ) |  | $ | (31.9 | ) |  | $ | (40.4 | ) |  | $ | (21.5 | ) |  | $ | (4.0 | ) |  | $ | (9.3 | ) |  | $ | (1.1 | )
Amortization of actuarial gain |  |  | 5.8 |  |  |  | 5.8 |  |  |  | 4.0 |  |  |  | 5.1 |  |  |  | 5.2 |  |  |  | 3.2 |  |  |  | 0.1 |  |  |  | 0.1 |  |  |  | 0.5 |
Current year prior service cost |  |  | — |  |  |  | (4.7 | ) |  |  | — |  |  |  | — |  |  |  | (4.7 | ) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Amortization of prior service (cost) credit |  |  | (0.2 | ) |  |  | (0.3 | ) |  |  | (0.3 | ) |  |  | (0.3 | ) |  |  | (0.6 | ) |  |  | (0.6 | ) |  |  | 0.1 |  |  |  | 0.3 |  |  |  | 0.3 |
Subtotal |  |  | (30.9 | ) |  |  | (51.6 | ) |  |  | (20.7 | ) |  |  | (27.1 | ) |  |  | (40.5 | ) |  |  | (18.9 | ) |  |  | (3.8 | ) |  |  | (8.9 | ) |  |  | (0.3 | )
Regulatory adjustment |  |  | 30.9 |  |  |  | 51.6 |  |  |  | 20.7 |  |  |  | 27.1 |  |  |  | 40.5 |  |  |  | 18.9 |  |  |  | 3.8 |  |  |  | 8.9 |  |  |  | 0.3 |
Total recognized in OCI |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |

Pursuant to a MoPSC Order, the return on plan assets is based on the market-related value of plan assets implemented prospectively over a four-year period. Gains and losses not yet includible in postretirement benefit cost are amortized only to the extent that such gain or loss exceeds 10% of the greater of the accumulated postretirement benefit obligation or the market-related value of plan assets. Such excess is amortized over the average remaining service life of active participants. Effective December 23, 2021, the $8.6 allowance for recovery in rates for Spire Missouri’s postretirement benefit plans was discontinued. The difference between no recovery in rates and postretirement expense as calculated pursuant to the above and that otherwise would be included in the statements of income and statements of comprehensive income is deferred as a regulatory asset or regulatory liability. Effective with the resolution of the 2022 Missouri rate case in December 2022, net liabilities for postretirement benefits reduced rates $0.9 and $0.1 per year for Missouri East and Missouri West, respectively.

In fiscal 2024, Spire Missouri offered an early retirement incentive to select employees, which resulted in a $6.1 increase in the postretirement obligation.

The following table sets forth the reconciliation of the beginning and ending balances of the postretirement benefit obligation at September 30:

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|  | Spire |  |  | Spire Missouri |  |  | Spire Alabama |
|  | 2025 |  |  | 2024 |  |  | 2025 |  |  | 2024 |  |  | 2025 |  |  | 2024 |
Benefit obligation, beginning of year |  | $ | 142.5 |  |  | $ | 142.6 |  |  | $ | 102.4 |  |  | $ | 105.3 |  |  | $ | 39.0 |  |  | $ | 35.1 |
Service cost |  |  | 4.2 |  |  |  | 4.3 |  |  |  | 3.5 |  |  |  | 3.5 |  |  |  | 0.7 |  |  |  | 0.7 |
Interest cost |  |  | 7.3 |  |  |  | 8.9 |  |  |  | 5.2 |  |  |  | 6.6 |  |  |  | 2.0 |  |  |  | 2.1 |
Actuarial (gain) loss |  |  | (18.4 | ) |  |  | (1.5 | ) |  |  | (17.1 | ) |  |  | (3.2 | ) |  |  | (1.2 | ) |  |  | 3.1 |
Plan amendments |  |  | — |  |  |  | (4.7 | ) |  |  | — |  |  |  | (4.7 | ) |  |  | — |  |  |  | — |
Retiree drug subsidy program |  |  | — |  |  |  | 0.2 |  |  |  | — |  |  |  | 0.2 |  |  |  | — |  |  |  | — |
Special termination benefits |  |  | — |  |  |  | 6.1 |  |  |  | — |  |  |  | 6.1 |  |  |  | — |  |  |  | — |
Benefits paid |  |  | (4.1 | ) |  |  | (13.4 | ) |  |  | (1.9 | ) |  |  | (11.4 | ) |  |  | (2.2 | ) |  |  | (2.0 | )
Benefit obligation, end of year |  | $ | 131.5 |  |  | $ | 142.5 |  |  | $ | 92.1 |  |  | $ | 102.4 |  |  | $ | 38.3 |  |  | $ | 39.0 |

In fiscal 2025, all the Spire funded plans experienced actuarial asset gains. Each plan’s returns exceeded expectations. The discount rate increased 45 basis points compared to the prior fiscal year-end which led to liability gains.

The following table sets forth the reconciliation of the beginning and ending balances of the fair value of plan assets at September 30:

|  | Spire |  |  | Spire Missouri |  |  | Spire Alabama |
|  | 2025 |  |  | 2024 |  |  | 2025 |  |  | 2024 |  |  | 2025 |  |  | 2024 |
Fair value of plan assets at beginning of year |  | $ | 339.4 |  |  | $ | 286.3 |  |  | $ | 224.9 |  |  | $ | 188.8 |  |  | $ | 107.5 |  |  | $ | 92.0 |
Actual return on plan assets |  |  | 34.9 |  |  |  | 66.3 |  |  |  | 25.7 |  |  |  | 47.3 |  |  |  | 8.2 |  |  |  | 17.5 |
Employer contributions |  |  | 2.7 |  |  |  | 0.2 |  |  |  | 2.7 |  |  |  | 0.2 |  |  |  | — |  |  |  | — |
Benefits paid |  |  | (4.1 | ) |  |  | (13.4 | ) |  |  | (1.9 | ) |  |  | (11.4 | ) |  |  | (2.2 | ) |  |  | (2.0 | )
Fair value of plan assets, end of year |  | $ | 372.9 |  |  | $ | 339.4 |  |  | $ | 251.4 |  |  | $ | 224.9 |  |  | $ | 113.5 |  |  | $ | 107.5 |
Funded status of plans, end of year |  | $ | 241.4 |  |  | $ | 196.9 |  |  | $ | 159.3 |  |  | $ | 122.5 |  |  | $ | 75.2 |  |  | $ | 68.5 |

The following table sets forth the amounts recognized in the balance sheets at September 30:

|  | Spire |  |  | Spire Missouri |  |  | Spire Alabama |
|  | 2025 |  |  | 2024 |  |  | 2025 |  |  | 2024 |  |  | 2025 |  |  | 2024 |
Noncurrent assets |  | $ | 288.2 |  |  | $ | 248.3 |  |  | $ | 206.1 |  |  | $ | 173.9 |  |  | $ | 75.2 |  |  | $ | 68.5 |
Current liabilities |  |  | (0.4 | ) |  |  | (0.4 | ) |  |  | (0.4 | ) |  |  | (0.4 | ) |  |  | — |  |  |  | — |
Noncurrent liabilities |  |  | (46.4 | ) |  |  | (51.0 | ) |  |  | (46.4 | ) |  |  | (51.0 | ) |  |  | — |  |  |  | — |
Total |  | $ | 241.4 |  |  | $ | 196.9 |  |  | $ | 159.3 |  |  | $ | 122.5 |  |  | $ | 75.2 |  |  | $ | 68.5 |

Pre-tax amounts recognized in accumulated other comprehensive loss no t yet recognized as components of net periodic postretirement benefit cost consist of:

|  | Spire |  |  | Spire Missouri |  |  | Spire Alabama |
|  | 2025 |  |  | 2024 |  |  | 2025 |  |  | 2024 |  |  | 2025 |  |  | 2024 |
Net actuarial gain |  | $ | (180.6 | ) |  | $ | (150.0 | ) |  | $ | (154.2 | ) |  | $ | (127.5 | ) |  | $ | (19.3 | ) |  | $ | (15.4 | )
Prior service cost (credit) |  |  | 2.0 |  |  |  | 2.0 |  |  |  | 2.0 |  |  |  | 2.1 |  |  |  | — |  |  |  | (0.1 | )
Subtotal |  |  | (178.6 | ) |  |  | (148.0 | ) |  |  | (152.2 | ) |  |  | (125.4 | ) |  |  | (19.3 | ) |  |  | (15.5 | )
Adjustments for amounts included in regulatory assets |  |  | 178.6 |  |  |  | 148.0 |  |  |  | 152.2 |  |  |  | 125.4 |  |  |  | 19.3 |  |  |  | 15.5 |
Total |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |

The assumptions used to calculate net periodic postretirement benefit costs for Spire Missouri are as follows:

|  | 2025 |  | 2024 |  | 2023
Weighted average discount rate – Spire Missouri plans |  | 5.05% |  | 6.30% |  | 5.80%
Expected long-term rate of return on plan assets – Spire Missouri plans |  | 5.50% |  | 5.50% |  | 5.50%

The assumptions used to calculate net periodic postretirement benefit costs for Spire Alabama are as follows:

|  | 2025 |  | 2024 |  | 2023
Weighted average discount rate |  | 5.05% |  | 6.30% |  | 5.80%
Expected long-term rate of return on plan assets |  | 4.75%/6.00% |  | 4.75%/6.00% |  | 4.75%/6.00%

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The discount rate is based on long-term, high quality bond indices at the measurement date. The expected long-term rate of return on plan assets is based on historical and projected rates of return for current and planned asset classes in the investment portfolio. Assumed projected rates of return for each asset class were selected after analyzing historical experience and future expectations of the returns. The overall expected rate of return for the portfolio was developed based on the target allocation for each class.

The weighted average discount rate used to calculate the accumulated postretirement benefit obligations for the Spire Alabama and Spire Missouri plans was 5.50% for 2025 and 5.05% for 2024.

The assumed medical cost trend rates at September 30 are as follows:

|  | 2025 |  | 2024
Medical cost trend assumed for next year – Spire Alabama and Spire Missouri |  | 7.00% |  | 6.50%
Rate to which the medical cost trend rate is assumed to decline (the ultimate medical cost trend rate) |  | 5.00% |  | 5.00%
Year the rate reaches the ultimate trend |  | 2034 |  | 2031

The following tables set forth the targeted and actual plan assets by category as of September 30 of each year for Spire Missouri and Spire Alabama:

Spire Missouri |  | Target |  |  | 2025 Actual |  |  | 2024 Actual |
Equity securities |  |  | 60.0 | % |  |  | 58.6 | % |  |  | 60.8 | %
Debt securities |  |  | 40.0 | % |  |  | 36.0 | % |  |  | 38.2 | %
Cash and cash equivalents |  |  | — | % |  |  | 5.4 | % |  |  | 1.0 | %
Total |  |  | 100.0 | % |  |  | 100.0 | % |  |  | 100.0 | %

Spire Alabama |  | Target |  |  | 2025 Actual |  |  | 2024 Actual |
Equity securities |  |  | 60.5 | % |  |  | 60.9 | % |  |  | 60.7 | %
Debt securities |  |  | 39.5 | % |  |  | 39.1 | % |  |  | 39.3 | %
Total |  |  | 100.0 | % |  |  | 100.0 | % |  |  | 100.0 | %

Missouri and Alabama state laws provide for the recovery in rates of costs accrued pursuant to GAAP provided that such costs are funded through an independent, external funding mechanism. The Utilities have established Voluntary Employees’ Beneficiary Association and Rabbi Trusts as external funding mechanisms. Their investment policies seek to maximize investment returns consistent with their tolerance for risk. Outside investment management specialists are utilized in each asset class. Such specialists are provided with guidelines, where appropriate, designed to ensure that the investment portfolio is managed in accordance with policy. Performance and compliance with the guidelines is regularly monitored. Spire Missouri and Spire Alabama currently invest in mutual funds which are rebalanced periodically to the target allocation. The mutual funds are diversified across U.S. stock and bond markets, and for Spire Alabama, international stock markets.

The following table sets forth expected postretirement benefit payments for the succeeding five fiscal years, and in aggregate for the five fiscal years thereafter for Spire, Spire Missouri, and Spire Alabama:

|  | 2026 |  |  | 2027 |  |  | 2028 |  |  | 2029 |  |  | 2030 |  |  | 2031 – 2035 |
Spire |  | $ | 13.4 |  |  | $ | 13.0 |  |  | $ | 12.5 |  |  | $ | 12.0 |  |  | $ | 11.6 |  |  | $ | 54.0 |
Spire Missouri |  |  | 10.1 |  |  |  | 9.7 |  |  |  | 9.3 |  |  |  | 8.9 |  |  |  | 8.5 |  |  |  | 38.3 |
Spire Alabama |  |  | 3.2 |  |  |  | 3.2 |  |  |  | 3.1 |  |  |  | 3.0 |  |  |  | 3.0 |  |  |  | 15.2 |

The Utilities’ funding policy is to contribute amounts to the trusts equal to the periodic benefit cost calculated pursuant to GAAP as recovered in rates. For both Spire Missouri and Spire Alabama there are no anticipated contributions to the postretirement plans in fiscal 2026.

Other Plans

Spire Services Inc. sponsors a 401(k) plan that cover substantially all employees of Spire Inc. and its subsidiaries. The plan allows employees to contribute a portion of their base pay in accordance with specific guidelines. The cost of the defined contribution plan for Spire Inc. totaled $16.5 for fiscal years 2025, and $16.6 for 2024, and $15.5 for 2023, respectively. Spire Missouri provides a match of such contributions within specific limits. The cost of the defined contribution plan for

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Spire Missouri amounted to $9.3, $9.3, and $9.1 for fiscal years 2025, 2024, and 2023, respectively. Spire Alabama also provides a match of employee contributions within specific limits. The cost of the defined contribution plan for Spire Alabama amounted to $3.0, $2.9, and $3.1 for fiscal years 2025, 2024, and 2023, respectively.

Fair Value Measurements of Pension and Other Postretirement Plan Assets

For registrants, cash and cash equivalents include money market mutual funds, are valued based on quoted market prices and are recorded as level 1 assets. Debt securities, other than global funds, are valued based on broker/dealer quotations or by using observable market inputs and are recorded as level 1 assets. The US stock/bond mutual funds that are valued at the quoted market price of the identical securities are recorded as level 1 assets. Debt global funds, real asset funds, international funds, and certain US stock/bond mutual funds and equity funds are recorded as level 2 as they have observable inputs other than level 1 prices, such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities.

Spire

The table below categorizes the fair value measurements of the Spire pension plan assets:

|  | As of September 30, 2025 |  |  | As of September 30, 2024 |
|  | Quoted Prices |  |  | Significant |  |  |  |  |  | Quoted Prices |  |  | Significant |  |  |  |
|  | in Active |  |  | Observable |  |  |  |  |  | in Active |  |  | Observable |  |  |  |
|  | Markets |  |  | Inputs |  |  |  |  |  | Markets |  |  | Inputs |  |  |  |
|  | (Level 1) |  |  | (Level 2) |  |  | Total |  |  | (Level 1) |  |  | (Level 2) |  |  | Total |
Cash and cash equivalents |  | $ | 27.4 |  |  | $ | — |  |  | $ | 27.4 |  |  | $ | 12.7 |  |  | $ | — |  |  | $ | 12.7 |
Equity funds - global (including U.S.) |  |  | — |  |  |  | 181.5 |  |  |  | 181.5 |  |  |  | — |  |  |  | 152.4 |  |  |  | 152.4 |
Real asset funds |  |  | — |  |  |  | 61.4 |  |  |  | 61.4 |  |  |  | — |  |  |  | 57.7 |  |  |  | 57.7 |
Debt securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. bond funds |  |  | 50.7 |  |  |  | — |  |  |  | 50.7 |  |  |  | 55.6 |  |  |  | — |  |  |  | 55.6 |
U.S. government index funds |  |  | 38.3 |  |  |  | — |  |  |  | 38.3 |  |  |  | 33.9 |  |  |  | — |  |  |  | 33.9 |
Global funds (including U.S.) |  |  | — |  |  |  | 68.4 |  |  |  | 68.4 |  |  |  | — |  |  |  | 62.5 |  |  |  | 62.5 |
Total |  | $ | 116.4 |  |  | $ | 311.3 |  |  | $ | 427.7 |  |  | $ | 102.2 |  |  | $ | 272.6 |  |  | $ | 374.8 |

The table below categorizes the fair value measurements of Spire’s postretirement plan assets:

|  | As of September 30, 2025 |  |  | As of September 30, 2024 |
|  | Quoted Prices |  |  | Significant |  |  |  |  |  | Quoted Prices |  |  | Significant |  |  |  |
|  | in Active |  |  | Observable |  |  |  |  |  | in Active |  |  | Observable |  |  |  |
|  | Markets |  |  | Inputs |  |  |  |  |  | Markets |  |  | Inputs |  |  |  |
|  | (Level 1) |  |  | (Level 2) |  |  | Total |  |  | (Level 1) |  |  | (Level 2) |  |  | Total |
Cash and cash equivalents |  | $ | 13.1 |  |  | $ | — |  |  | $ | 13.1 |  |  | $ | 1.6 |  |  | $ | — |  |  | $ | 1.6 |
U.S. stock/bond mutual funds |  |  | 294.5 |  |  |  | 44.4 |  |  |  | 338.9 |  |  |  | 229.1 |  |  |  | 89.0 |  |  |  | 318.1 |
International fund |  |  | 1.4 |  |  |  | 19.5 |  |  |  | 20.9 |  |  |  | — |  |  |  | 19.7 |  |  |  | 19.7 |
Total |  | $ | 309.0 |  |  | $ | 63.9 |  |  | $ | 372.9 |  |  | $ | 230.7 |  |  | $ | 108.7 |  |  | $ | 339.4 |

Spire Missouri

The table below categorizes the fair value measurements of Spire Missouri’s pension plan assets:

|  | As of September 30, 2025 |  |  | As of September 30, 2024 |
|  | Quoted Prices |  |  | Significant |  |  |  |  |  | Quoted Prices |  |  | Significant |  |  |  |
|  | in Active |  |  | Observable |  |  |  |  |  | in Active |  |  | Observable |  |  |  |
|  | Markets |  |  | Inputs |  |  |  |  |  | Markets |  |  | Inputs |  |  |  |
|  | (Level 1) |  |  | (Level 2) |  |  | Total |  |  | (Level 1) |  |  | (Level 2) |  |  | Total |
Cash and cash equivalents |  | $ | 10.1 |  |  | $ | — |  |  | $ | 10.1 |  |  | $ | 9.9 |  |  | $ | — |  |  | $ | 9.9 |
Equity funds - global (including U.S.) |  |  | — |  |  |  | 117.1 |  |  |  | 117.1 |  |  |  | — |  |  |  | 102.2 |  |  |  | 102.2 |
Real asset funds |  |  | — |  |  |  | 43.1 |  |  |  | 43.1 |  |  |  | — |  |  |  | 40.2 |  |  |  | 40.2 |
Debt securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. bond funds |  |  | 35.1 |  |  |  | — |  |  |  | 35.1 |  |  |  | 38.2 |  |  |  | — |  |  |  | 38.2 |
U.S. government index funds |  |  | 30.2 |  |  |  | — |  |  |  | 30.2 |  |  |  | 25.2 |  |  |  | — |  |  |  | 25.2 |
Global funds (including U.S.) |  |  | — |  |  |  | 49.2 |  |  |  | 49.2 |  |  |  | — |  |  |  | 44.1 |  |  |  | 44.1 |
Total |  | $ | 75.4 |  |  | $ | 209.4 |  |  | $ | 284.8 |  |  | $ | 73.3 |  |  | $ | 186.5 |  |  | $ | 259.8 |

The table below categorizes the fair value measurements of Spire Missouri’s postretirement plan assets:

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|  | As of September 30, 2025 |  |  | As of September 30, 2024 |
|  | Quoted Prices |  |  | Significant |  |  |  |  |  | Quoted Prices |  |  | Significant |  |  |  |
|  | in Active |  |  | Observable |  |  |  |  |  | in Active |  |  | Observable |  |  |  |
|  | Markets |  |  | Inputs |  |  |  |  |  | Markets |  |  | Inputs |  |  |  |
|  | (Level 1) |  |  | (Level 2) |  |  | Total |  |  | (Level 1) |  |  | (Level 2) |  |  | Total |
Cash and cash equivalents |  | $ | 12.1 |  |  | $ | — |  |  | $ | 12.1 |  |  | $ | 0.7 |  |  | $ | — |  |  | $ | 0.7 |
U.S. stock/bond mutual funds |  |  | 239.3 |  |  |  | — |  |  |  | 239.3 |  |  |  | 224.2 |  |  |  | — |  |  | $ | 224.2 |
Total |  | $ | 251.4 |  |  | $ | — |  |  | $ | 251.4 |  |  | $ | 224.9 |  |  | $ | — |  |  | $ | 224.9 |

Spire Alabama

The table below categorizes the fair value measurements of Spire Alabama’s pension plan assets:

|  | As of September 30, 2025 |  |  | As of September 30, 2024 |
|  | Quoted Prices |  |  | Significant |  |  |  |  |  | Quoted Prices |  |  | Significant |  |  |  |
|  | in Active |  |  | Observable |  |  |  |  |  | in Active |  |  | Observable |  |  |  |
|  | Markets |  |  | Inputs |  |  |  |  |  | Markets |  |  | Inputs |  |  |  |
|  | (Level 1) |  |  | (Level 2) |  |  | Total |  |  | (Level 1) |  |  | (Level 2) |  |  | Total |
Cash and cash equivalents |  | $ | 10.2 |  |  | $ | — |  |  | $ | 10.2 |  |  | $ | 1.7 |  |  | $ | — |  |  | $ | 1.7 |
Equity funds - global (including U.S.) |  |  | — |  |  |  | 41.3 |  |  |  | 41.3 |  |  |  | — |  |  |  | 30.6 |  |  |  | 30.6 |
Real asset funds |  |  | — |  |  |  | 11.7 |  |  |  | 11.7 |  |  |  | — |  |  |  | 10.6 |  |  |  | 10.6 |
Debt securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. bond funds |  |  | 9.9 |  |  |  | — |  |  |  | 9.9 |  |  |  | 10.6 |  |  |  | — |  |  |  | 10.6 |
U.S. government index funds |  |  | 5.2 |  |  |  | — |  |  |  | 5.2 |  |  |  | 5.2 |  |  |  | — |  |  |  | 5.2 |
Global funds (including U.S.) |  |  | — |  |  |  | 12.3 |  |  |  | 12.3 |  |  |  | — |  |  |  | 11.2 |  |  |  | 11.2 |
Total |  | $ | 25.3 |  |  | $ | 65.3 |  |  | $ | 90.6 |  |  | $ | 17.5 |  |  | $ | 52.4 |  |  | $ | 69.9 |

The table below categorizes the fair value measurements of Spire Alabama’s postretirement plan assets:

|  | As of September 30, 2025 |  |  | As of September 30, 2024 |
|  | Quoted Prices |  |  | Significant |  |  |  |  |  | Quoted Prices |  |  | Significant |  |  |  |
|  | in Active |  |  | Observable |  |  |  |  |  | in Active |  |  | Observable |  |  |  |
|  | Markets |  |  | Inputs |  |  |  |  |  | Markets |  |  | Inputs |  |  |  |
|  | (Level 1) |  |  | (Level 2) |  |  | Total |  |  | (Level 1) |  |  | (Level 2) |  |  | Total |
U.S. stock/bond mutual funds |  | $ | 49.6 |  |  | $ | 44.4 |  |  | $ | 94.0 |  |  | $ | — |  |  | $ | 89.0 |  |  | $ | 89.0 |
International fund |  |  | — |  |  |  | 19.5 |  |  |  | 19.5 |  |  |  | — |  |  |  | 18.5 |  |  |  | 18.5 |
Total |  | $ | 49.6 |  |  | $ | 63.9 |  |  | $ | 113.5 |  |  | $ | — |  |  | $ | 107.5 |  |  | $ | 107.5 |

14. SEGMENT INFORMATION

The Company has three reportable segments: Gas Utility, Gas Marketing, and Midstream. The Gas Utility segment is the aggregation of the operations of the Utilities. The Gas Utility segment consists of our natural gas utilities: Spire Missouri Inc. (“Spire Missouri”) (serving areas of Missouri, including the St. Louis and Kansas City regions), Spire Alabama Inc. (serving central and northern Alabama, including Birmingham and Montgomery), Spire Gulf Inc. (serving southwestern Alabama, including Mobile) and Spire Mississippi Inc. (serving south-central Mississippi, including Hattiesburg). The Gas Marketing segment includes the results of Spire Marketing, a subsidiary engaged in the non-regulated marketing of natural gas and related activities, including utilizing natural gas storage contracts for providing natural gas sales. The Midstream segment includes Spire Storage, Spire STL Pipeline and Spire MoGas Pipeline, which are subsidiaries engaged in the storage and transportation of natural gas. All other components of the Company’s consolidated information include Spire’s subsidiaries engaged in the operation of a propane pipeline and risk management, among other activities, and unallocated corporate items, including certain debt and associated interest costs.

Spire

Spire’s chief operating decision maker ("CODM") is the chief executive officer. The CODM and management evaluate the performance of the segments based on the computation of adjusted earnings. Adjusted earnings excludes from reported net income, as applicable, the after-tax impacts of fair value accounting and timing adjustments associated with energy-related transactions, the impacts of acquisition, divestiture and restructuring activities, and the largely non-cash impacts of other non-recurring or unusual items such as certain regulatory, legislative or GAAP standard-setting actions. For each of the Company’s segments, the CODM uses adjusted earnings to allocate resources and determine reinvestment for each segment, predominantly in the annual budget and forecasting process. Adjusted earnings is also used to monitor budget versus actual results to assess performance of the segment and establish management compensation. The CODM does not receive asset information for the individual reportable segments.

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Spire Missouri

As a separate public gas utility company operating in a single state, Spire Missouri is a single reportable segment. The chief executive officer is the CODM, who assesses performance and decides how to allocate resources based on net income. The CODM uses comparisons of actual results with budgeted and prior year results to assess performance of Spire Missouri and in establishing management’s compensation. The CODM does not receive asset information other than asset information reported on the Spire Missouri Balance Sheets. Financial data related to income and expenses, including gross receipt taxes which are disclosed separately, for the single reportable segment are reported on Spire Missouri’s Statements of Comprehensive Income.

Financial data related to gross receipt taxes and capital expenditures are as follows:

|  | 2025 |  |  | 2024 |  |  | 2023 |
Gross Receipt Taxes |  | $ | 82.9 |  |  | $ | 93.1 |  |  | $ | 96.7 |
Capital Expenditures |  |  | 641.2 |  |  |  | 553.0 |  |  |  | 447.5 |

Spire Alabama

As a separate public gas utility company operating in a single state, Spire Alabama is a single reportable segment. The chief executive officer is the CODM, who assesses performance and decides how to allocate resources based on net income. The CODM uses comparisons of actual results with budgeted and prior year results to assess performance of each company and in establishing management’s compensation. The CODM does not receive asset information other than asset information reported on the Spire Alabama Balance Sheets. Financial data related to income and expenses, including gross receipts taxes which are disclosed separately, for the single reportable segment are reported on Spire Alabama’s Statements of Income.

Financial data related to gross receipt taxes and capital expenditures are as follows:

|  | 2025 |  |  | 2024 |  |  | 2023 |
Gross Receipt Taxes |  |  | 27.9 |  |  |  | 30.1 |  |  |  | 29.9 |
Capital Expenditures |  |  | 144.2 |  |  |  | 112.8 |  |  |  | 117.6 |

Spire

The accounting policies of the segments are the same as those described in Note 1, Summary of Significant Accounting Policies. Spire’s intersegment transactions include sales of natural gas from Spire Marketing to Spire Missouri, Spire Alabama and Spire Storage; sales of natural gas from Spire Missouri to Spire Marketing; storage services from Spire Storage to Spire Missouri and Spire Marketing; and natural gas transportation services provided by Spire STL Pipeline and Spire MoGas Pipeline to Spire Missouri and Spire Marketing. The basis of accounting for intersegment transactions is the same as that for third party transactions. For more information about segment revenue, see Note 2, Revenue.

The following tables present information about Spire’s segment revenue, segment expenses, and Adjusted Earnings.

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2025 |  | Gas Utility |  |  | Gas Marketing |  |  | Midstream |  |  | Total Reportable Segments |  |  | Other(b) |  |  | Intersegment Eliminations |  |  | Consolidated |
Revenues from external customers |  | $ | 2,207.5 |  |  | $ | 157.2 |  |  | $ | 109.2 |  |  | $ | 2,473.9 |  |  | $ | 2.5 |  |  | $ | — |  |  | $ | 2,476.4 |
Intersegment revenues |  |  | 0.1 |  |  |  | - |  |  |  | 46.3 |  |  |  | 46.4 |  |  |  | — |  |  |  | (46.4 | ) |  |  | - |
Total Operating Revenues |  |  | 2,207.6 |  |  |  | 157.2 |  |  |  | 155.5 |  |  |  | 2,520.3 |  |  |  | 2.5 |  |  |  | (46.4 | ) |  |  | 2,476.4 |
Less: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant segment expenses: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cost of gas sold, incl. gross receipts taxes |  |  | 970.9 |  |  |  | 93.7 |  |  |  | 3.0 |  |  |  | 1,067.6 |  |  |  | — |  |  |  | (46.4 | ) |  |  | 1,021.2 |
Operation and maintenance expense |  |  | 467.1 |  |  |  | 19.4 |  |  |  | 45.3 |  |  |  | 531.8 |  |  |  | 10.3 |  |  |  | — |  |  |  | 542.1 |
Depreciation and amortization expense |  |  | 277.6 |  |  |  | 1.0 |  |  |  | 19.2 |  |  |  | 297.8 |  |  |  | 0.4 |  |  |  | — |  |  |  | 298.2 |
Interest expense |  |  | 137.1 |  |  |  | — |  |  |  | 11.6 |  |  |  | 148.7 |  |  |  | 55.4 |  |  |  | — |  |  |  | 204.1 |
Income tax expense (benefit) |  |  | 47.4 |  |  |  | 11.1 |  |  |  | 15.7 |  |  |  | 74.2 |  |  |  | (14.5 | ) |  |  | — |  |  |  | 59.7 |
Other segment items (a) |  |  | 76.1 |  |  |  | 6.1 |  |  |  | 4.4 |  |  |  | 86.6 |  |  |  | (11.0 | ) |  |  | — |  |  |  | 75.6 |
Adjusted earnings (loss) [Non-GAAP] |  | $ | 231.4 |  |  | $ | 25.9 |  |  | $ | 56.3 |  |  | $ | 313.6 |  |  | $ | (38.1 | ) |  | $ | - |  |  | $ | 275.5 |
Capital expenditures |  |  | 816.8 |  |  |  | 0.1 |  |  |  | 106.8 |  |  |  | 923.7 |  |  |  | (1.3 | ) |  |  | — |  |  |  | 922.4 |

2024 |  | Gas Utility |  |  | Gas Marketing |  |  | Midstream |  |  | Total Reportable Segments |  |  | Other(b) |  |  | Intersegment Eliminations |  |  | Consolidated |
Revenues from external customers |  | $ | 2,436.2 |  |  | $ | 99.2 |  |  | $ | 56.9 |  |  | $ | 2,592.3 |  |  | $ | 0.7 |  |  | $ | — |  |  | $ | 2,593.0 |
Intersegment revenues |  |  | 1.7 |  |  |  | — |  |  |  | 43.8 |  |  |  | 45.5 |  |  |  | - |  |  |  | (45.5 | ) |  |  | - |
Total Operating Revenues |  |  | 2,437.9 |  |  |  | 99.2 |  |  |  | 100.7 |  |  |  | 2,637.8 |  |  |  | 0.7 |  |  |  | (45.5 | ) |  |  | 2,593.0 |
Less: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant segment expenses: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cost of gas sold, incl. gross receipts taxes |  |  | 1,238.7 |  |  |  | 37.1 |  |  |  | 1.1 |  |  |  | 1,276.9 |  |  |  | 0.1 |  |  |  | (45.5 | ) |  |  | 1,231.5 |
Operation and maintenance expense |  |  | 452.8 |  |  |  | 18.2 |  |  |  | 34.7 |  |  |  | 505.7 |  |  |  | 1.7 |  |  |  | — |  |  |  | 507.4 |
Depreciation and amortization expense |  |  | 263.6 |  |  |  | 1.5 |  |  |  | 12.8 |  |  |  | 277.9 |  |  |  | 0.5 |  |  |  | — |  |  |  | 278.4 |
Interest expense |  |  | 147.3 |  |  |  | — |  |  |  | 7.0 |  |  |  | 154.3 |  |  |  | 46.8 |  |  |  | — |  |  |  | 201.1 |
Income tax expense (benefit) |  |  | 48.0 |  |  |  | 10.8 |  |  |  | 9.6 |  |  |  | 68.4 |  |  |  | (9.7 | ) |  |  | — |  |  |  | 58.7 |
Other segment items (a) |  |  | 66.7 |  |  |  | 8.2 |  |  |  | 2.0 |  |  |  | 76.9 |  |  |  | (8.4 | ) |  |  | — |  |  |  | 68.5 |
Adjusted earnings (loss) [Non-GAAP] |  | $ | 220.8 |  |  | $ | 23.4 |  |  | $ | 33.5 |  |  | $ | 277.7 |  |  | $ | (30.3 | ) |  | $ | - |  |  | $ | 247.4 |
Capital expenditures |  |  | 691.1 |  |  |  | 0.1 |  |  |  | 171.3 |  |  |  | 862.5 |  |  |  | (1.2 | ) |  |  | — |  |  |  | 861.3 |

2023 |  | Gas Utility |  |  | Gas Marketing |  |  | Midstream |  |  | Total Reportable Segments |  |  | Other(b) |  |  | Intersegment Eliminations |  |  | Consolidated |
Revenues from external customers |  | $ | 2,456.6 |  |  | $ | 179.1 |  |  | $ | 29.9 |  |  | $ | 2,665.6 |  |  | $ | 0.7 |  |  | $ | — |  |  | $ | 2,666.3 |
Intersegment revenues |  |  | 0.3 |  |  |  | — |  |  |  | 36.2 |  |  |  | 36.5 |  |  |  | — |  |  |  | (36.5 | ) |  |  | - |
Total Operating Revenues |  |  | 2,456.9 |  |  |  | 179.1 |  |  |  | 66.1 |  |  |  | 2,702.1 |  |  |  | 0.7 |  |  |  | (36.5 | ) |  |  | 2,666.3 |
Less: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant segment expenses: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cost of gas sold, incl. gross receipts taxes |  |  | 1,321.1 |  |  |  | 108.0 |  |  |  | — |  |  |  | 1,429.1 |  |  |  | — |  |  |  | (36.5 | ) |  |  | 1,392.6 |
Operation and maintenance expense |  |  | 461.8 |  |  |  | 19.4 |  |  |  | 30.5 |  |  |  | 511.7 |  |  |  | 5.9 |  |  |  | — |  |  |  | 517.6 |
Depreciation and amortization expense |  |  | 244.4 |  |  |  | 1.5 |  |  |  | 8.4 |  |  |  | 254.3 |  |  |  | 0.5 |  |  |  | — |  |  |  | 254.8 |
Interest expense |  |  | 139.9 |  |  |  | — |  |  |  | 8.6 |  |  |  | 148.5 |  |  |  | 37.2 |  |  |  | — |  |  |  | 185.7 |
Income tax expense (benefit) |  |  | 32.7 |  |  |  | 12.8 |  |  |  | 3.8 |  |  |  | 49.3 |  |  |  | (10.5 | ) |  |  | — |  |  |  | 38.8 |
Other segment items (a) |  |  | 56.5 |  |  |  | (10.2 | ) |  |  | 0.7 |  |  |  | 47.0 |  |  |  | 1.7 |  |  |  | — |  |  |  | 48.7 |
Adjusted earnings (loss) |  | $ | 200.5 |  |  | $ | 47.6 |  |  | $ | 14.1 |  |  | $ | 262.2 |  |  | $ | (34.1 | ) |  | — |  |  | $ | 228.1 |
Capital expenditures |  |  | 588.6 |  |  |  | 0.4 |  |  |  | 73.6 |  |  |  | 662.6 |  |  |  | (0.1 | ) |  |  | — |  |  |  | 662.5 |

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(a) Other segment items for each reportable segment include fair value and timing adjustments, acquisition and restructuring activities, taxes other than income and gross receipt taxes, and miscellaneous income and deductions.

(b) All other components of the Company's consolidated information include Spire's subsidiaries engaged in the operation of a propane pipeline and risk management, among other activities, and unallocated corporate items, including certain debt and associated interest costs.

Reconciliation of Consolidated Net Income to Consolidated Adjusted Earnings |  | 2025 |  |  | 2024 |  |  | 2023 |
Net Income |  | $ | 271.7 |  |  | $ | 250.9 |  |  | $ | 217.5 |
Adjustments, pre-tax: |  |  |  |  |  |  |  |  |
Fair value and timing adjustments |  |  | (10.4 | ) |  |  | (12.4 | ) |  |  | 11.4 |
Acquisition and restructuring activities |  |  | 15.2 |  |  |  | 7.6 |  |  |  | 2.5 |
Income tax adjustments |  |  | (1.0 | ) |  |  | 1.3 |  |  |  | (3.3 | )
Adjusted Earnings |  | $ | 275.5 |  |  | $ | 247.4 |  |  | $ | 228.1 |

15. REGULATORY MATTERS

As discussed below for Spire Missouri and Spire Alabama, the PGA clauses and GSA riders allow the Utilities to pass through to customers the cost of purchased gas supplies. Regulatory assets and regulatory liabilities related to the PGA clauses and the GSA rider are both labeled Unamortized Purchased Gas Adjustments herein.

The following regulatory assets and regulatory liabilities were reflected in the balance sheets of the Company, Spire Missouri and Spire Alabama as of September 30, 2025 and 2024.

|  | Spire |  |  | Spire Missouri |  |  | Spire Alabama |
September 30 |  | 2025 |  |  | 2024 |  |  | 2025 |  |  | 2024 |  |  | 2025 |  |  | 2024 |
Regulatory Assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Current: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unamortized purchased gas adjustments |  | $ | 16.5 |  |  | $ | 28.9 |  |  | $ | 14.9 |  |  | $ | 28.1 |  |  | $ | — |  |  | $ | — |
Other |  |  | 61.8 |  |  |  | 86.5 |  |  |  | 34.0 |  |  |  | 55.9 |  |  |  | 16.1 |  |  |  | 19.2 |
Total Current Regulatory Assets |  |  | 78.3 |  |  |  | 115.4 |  |  |  | 48.9 |  |  |  | 84.0 |  |  |  | 16.1 |  |  |  | 19.2 |
Noncurrent: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Future income taxes due from customers |  |  | 154.2 |  |  |  | 150.7 |  |  |  | 146.6 |  |  |  | 142.7 |  |  |  | 1.6 |  |  |  | 1.8 |
Pension and postretirement benefit costs |  |  | 217.8 |  |  |  | 237.5 |  |  |  | 157.0 |  |  |  | 166.5 |  |  |  | 59.1 |  |  |  | 68.2 |
Cost of removal |  |  | 688.3 |  |  |  | 668.2 |  |  |  | 98.8 |  |  |  | 97.0 |  |  |  | 589.6 |  |  |  | 571.2 |
Unamortized purchased gas adjustments |  |  | 9.0 |  |  |  | 1.2 |  |  |  | 9.0 |  |  |  | 1.2 |  |  |  | — |  |  |  | — |
Energy efficiency |  |  | 65.0 |  |  |  | 61.0 |  |  |  | 65.0 |  |  |  | 61.0 |  |  |  | — |  |  |  | — |
Other |  |  | 189.2 |  |  |  | 133.2 |  |  |  | 176.8 |  |  |  | 119.6 |  |  |  | 0.3 |  |  |  | 0.8 |
Total Noncurrent Regulatory Assets |  |  | 1,323.5 |  |  |  | 1,251.8 |  |  |  | 653.2 |  |  |  | 588.0 |  |  |  | 650.6 |  |  |  | 642.0 |
Total Regulatory Assets |  | $ | 1,401.8 |  |  | $ | 1,367.2 |  |  | $ | 702.1 |  |  | $ | 672.0 |  |  | $ | 666.7 |  |  | $ | 661.2 |
Regulatory Liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Current: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unamortized purchased gas adjustments |  | $ | 34.9 |  |  | $ | 42.3 |  |  | $ | 13.9 |  |  | $ | 10.2 |  |  | $ | 20.2 |  |  | $ | 30.9 |
Other |  |  | 4.5 |  |  |  | 7.2 |  |  |  | — |  |  |  | — |  |  |  | 0.1 |  |  |  | 2.9 |
Total Current Regulatory Liabilities |  |  | 39.4 |  |  |  | 49.5 |  |  |  | 13.9 |  |  |  | 10.2 |  |  |  | 20.3 |  |  |  | 33.8 |
Noncurrent: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred taxes due to customers |  |  | 100.3 |  |  |  | 114.2 |  |  |  | 88.8 |  |  |  | 101.8 |  |  |  | — |  |  |  | — |
Pension and postretirement benefit costs |  |  | 300.1 |  |  |  | 232.9 |  |  |  | 261.2 |  |  |  | 196.6 |  |  |  | 26.5 |  |  |  | 25.1 |
Accrued cost of removal |  |  | 138.2 |  |  |  | 133.6 |  |  |  | 96.0 |  |  |  | 94.5 |  |  |  | — |  |  |  | — |
Unamortized purchased gas adjustments |  |  | 6.5 |  |  |  | 17.2 |  |  |  | 6.5 |  |  |  | 17.2 |  |  |  | — |  |  |  | — |
Other |  |  | 32.9 |  |  |  | 37.6 |  |  |  | 28.8 |  |  |  | 33.2 |  |  |  | 2.7 |  |  |  | 3.2 |
Total Noncurrent Regulatory Liabilities |  |  | 578.0 |  |  |  | 535.5 |  |  |  | 481.3 |  |  |  | 443.3 |  |  |  | 29.2 |  |  |  | 28.3 |
Total Regulatory Liabilities |  | $ | 617.4 |  |  | $ | 585.0 |  |  | $ | 495.2 |  |  | $ | 453.5 |  |  | $ | 49.5 |  |  | $ | 62.1 |

A portion of the Company’s and Spire Missouri's regulatory assets are not earning a return, as shown in the table below:

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|  | Spire |  |  | Spire Missouri |
September 30 |  | 2025 |  |  | 2024 |  |  | 2025 |  |  | 2024 |
Pension and postretirement benefit costs |  | $ | 119.1 |  |  | $ | 129.7 |  |  | $ | 119.1 |  |  | $ | 129.7 |
Future income taxes due from customers |  |  | 152.7 |  |  |  | 148.9 |  |  |  | 146.6 |  |  |  | 142.7 |
Unamortized purchase gas adjustments |  |  | 23.9 |  |  |  | 29.3 |  |  |  | 23.9 |  |  |  | 29.3 |
Other |  |  | 177.0 |  |  |  | 132.5 |  |  |  | 177.0 |  |  |  | 132.5 |
Total Regulatory Assets Not Earning a Return |  | $ | 472.7 |  |  | $ | 440.4 |  |  | $ | 466.6 |  |  | $ | 434.2 |

Like all the Company’s regulatory assets, these regulatory assets as of September 30, 2025 are expected to be recovered from customers in future rates. The recovery period for the future income taxes due from customers and pension and other postretirement benefit costs could be 20 years or longer, based on current Internal Revenue Service guidelines and average remaining service life of active participants, respectively. The recovery period for the PGA assets is about one year. The other items not earning a return are expected to be recovered over a period not to exceed 15 years, consistent with precedent set by the MoPSC, except for certain debt costs expected to be recovered over the related debt term (currently to 2057) and the diaphragm meter recovery over 20 years. Spire Alabama does not have any regulatory assets that are not earning a return.

Spire Missouri

As authorized by the MoPSC, the PGA clause allows Spire Missouri to flow through to customers, subject to prudence review by the MoPSC, the cost of purchased gas supplies. To better match customer billings with market natural gas prices, Spire Missouri is allowed to file to modify, on a periodic basis, the level of gas costs in its PGA. Some provisions of the PGA clause are:

•
Spire Missouri has a risk management policy that allows for the purchase of natural gas derivative instruments with the goal of managing price risk associated with purchasing natural gas on behalf of its customers. The MoPSC clarified that costs, cost reductions, and carrying costs associated with the Utility’s use of natural gas derivative instruments are gas costs recoverable through the PGA mechanism.
•
The tariffs allow Spire Missouri flexibility to make up to three discretionary PGA changes during each year, in addition to its mandatory November PGA change, so long as such changes are separated by at least two months.
•
Spire Missouri is authorized to apply carrying costs to all over- or under-recoveries of gas costs, including cost increases and cost reductions associated with the use of derivative instruments, including cash payments for margin deposits.
•
Pre-tax income from off-system sales and capacity release revenues is shared with customers such that customers receive 75% and Spire Missouri receives 25% (after the first $2.2 of annual value from capacity release goes entirely to customers through fiscal 2029 for Spire Missouri West).

Pursuant to the provisions of the PGA clause, the difference between actual costs incurred and costs recovered through the application of the PGA clause, as well as the actual amount of off-system sales and capacity release revenues allocated to customers, are reflected as a regulatory asset or liability at the end of the fiscal year. At that time, the balance is classified as a current asset or current liability and recovered from, or credited to, customers over an annual period commencing in the subsequent November. The balance in the current account is amortized as amounts are reflected in customer billings. On November 12, 2024, based on a recent Spire Missouri filing, the MoPSC approved a PGA decrease of approximately 30% for both service territories effective November 15, 2024. On November 12, 2025, Spire Missouri filed a PGA adjustment increase for both Missouri service territories, with rates proposed to become effective November 26, 2025, pending MoPSC approval.

In fiscal 2025, Spire Missouri filed a general rate case (Case No. GR-2025-0107) requesting a base rate increase. On September 3, 2025, the MoPSC approved a stipulation and agreement in Spire Missouri’s general rate case. The approved agreement provides for a base rate increase of $210.0, which became effective on October 24, 2025. The approved base rate incorporates the $72.6 from customers through ISRS for eligible capital projects through February 2025, resulting in a net base rate increase of $137.4. The terms of the agreement do not impact any amounts previously recorded. The approved rates are based on a total rate base plant in service of $4,379.6, reflecting significant infrastructure investments since Spire’s last general rate filing, and include a 7.05% post-tax total rate of return for future ISRS purposes.

The Infrastructure System Replacement Surcharge (ISRS) allows Spire Missouri expedited recovery for its investment to replace qualifying components of its infrastructure without the necessity of a formal rate case. On January 17, 2025, Spire Missouri filed an ISRS case for eligible capital projects from September 2024 through February 2025 (including estimates for January and February). On April 17, the MoPSC Staff recommended an increase of $19.0, to which no party objected. The MoPSC authorized new rates effective May 14, 2025, resulting in total annual ISRS revenues of $72.6. All ISRS charges reset to zero on October 24, 2025 when new base rates took effect under the general rate case described above.

Spire Alabama

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In September 2022, the APSC approved the renewal of the RSE through September 30, 2025, with certain modifications to the previous terms. Under RSE, the APSC conducts reviews in March, June and September to determine whether Spire Alabama’s return on average common equity (RCE) at the end of the rate year will be within the allowed range of return. Reductions in rates can be made quarterly to bring the projected RCE within the allowed range; increases, however, are allowed only once each rate year, effective December 1, and cannot exceed 4% of prior-year revenues. Effective October 1, 2022, Spire Alabama's allowed range of RCE is 9.50% to 9.90% with an adjusting point of 9.70%. Previously, the allowed range was 10.15% to 10.65% with an adjusting point of 10.40%. Spire Alabama is subject to a performance-based adjustment of plus or minus 10 basis points to the RCE adjusting point, based upon the terms of the previously approved Accelerated Infrastructure Modernization (AIM) Program tariff; however, Spire applied for and received approval to suspend the operation of the AIM performance-based adjustment for 2022, 2023, 2024 and 2025, impacting fiscal years 2023 through 2026. Spire Alabama’s equity as a percent of total capitalization is limited to 55.5%, and Average Common Equity growth is limited to 6.00% each yea r. In October 2025, Spire Alabama submitted its annual RSE filing to the APSC, indicating that the RSE framework will continue beyond September 30, 2025. The filing projects a return on average common equity of 8.24% for the upcoming rate year, which falls below the approved range, resulting in rate adjustments scheduled to take effect on December 1, 2025, in line with RSE guidelines.

In the first quarter of fiscal 2023, Spire Alabama made its annual RSE rate filing with the APSC, presenting the utility’s budget for the fiscal year ended September 30, 2024, and new rates designed to provide an annual revenue increase of $15.0 became effective January 1, 2023. On October 26, 2023, Spire Alabama made its annual RSE rate filing, presenting the utility’s budget for the fiscal year ending September 30, 2025. After an amended filing on December 27, 2023, new rates designed to provide an annual revenue increase of $14.3 became effective January 1, 2024. At the September 30, 2024 point of test, the RCE was above the allowed range, resulting in a reduction in rates totaling $4.0 annually effective in December 2024. On October 24, 2024, Spire Alabama made its annual RSE rate filing (based on its budget for fiscal 2025) including proposed rates designed to provide an annual revenue increase of $3.6, subject to review by the APSC staff and the Office of the Attorney General. The final budget was filed and approved on November 26, 2024. The filing included an increase to the Company’s return on equity that was offset by cost reductions due to customer affordability efforts, and therefore no adjustment was required to base rates that went into effect on December 1, 2024. On October 24, 2025, Spire Alabama made its annual RSE rate filing (based on its budget for fiscal 2026) including proposed rates designed to provide an annual revenue increase of $15.6, subject to review by the APSC staff and the Office of the Attorney General.

The inflation-based Cost Control Measure (CCM) established by the APSC allows for annual changes in operation and maintenance (“O&M”) expense relative to an index range. Effective October 1, 2022, the Base Year O&M expense was computed by averaging the actual O&M expenses for 2020, 2021, and 2022. The Base CPI-U was computed by averaging the August CPI-U for 2020, 2021, 2022. The “Index” is computed by measuring the change from the Base CPI-U to the August CPI-U of the most recently completed fiscal year, less a factor of 1.50%. The index range will be computed by adjusting the Index plus or minus 1.50%. If rate year O&M expense falls within the index range, no adjustment is required. If rate year O&M expense exceeds the index range, three-quarters of the difference is returned to customers through future rate adjustments. To the extent rate year O&M is less than the index range, Spire Alabama benefits by one-half of the difference through future rate adjustments. If a benefit is achieved, the Base Year and the Base CPI-U for the following year will each be reset to an average of the three preceding completed years. If a benefit is not achieved, the Base Year and Base CPI-U will not be updated. Certain items that fluctuate based on situations demonstrated to be beyond Spire Alabama’s control may be excluded from the CCM calculation. Spire Alabama recorded a CCM benefit for rate year 2022 of $17.2. To mitigate the impact on ratepayers, Spire requested and received approval to recover the rate year 2022 CCM benefit over five years (with recognition of revenue only up to 24 months in advance of recovery), of which approximately $10.0 has been collected to date as September 30, 2025. Spire Alabama recorded CCM benefits for rate years 2023 and 2024 of $4.4 and $2.5, respectively, which have been fully recovered as of September 30, 2025. For the rate year ending September 30, 2025, Spire Alabama’s O&M expenses fell within the allowed index range under the CCM provision, and as a result, no adjustment to rates (or related CCM benefit or refund) was proposed—subject to review and approval by the Alabama Public Service Commission.

Spire Alabama’s rate schedules for natural gas distribution charges contain a GSA rider which permits the pass-through to customers of changes in the cost of gas supply. Spire Alabama’s tariff provides a temperature adjustment mechanism, also included in the GSA rider, which is designed to moderate the impact of departures from normal temperatures on Spire Alabama’s earnings. The temperature adjustment applies primarily to residential, small commercial and small industrial customers. Other non-temperature weather-related conditions that may affect customer usage are not included in the temperature adjustment. There is also a mechanism under Spire Alabama's GSA rider allowing the utility to create value through off-system sales of excess natural gas supply and capacity and to give 75% of the value created to customers while retaining 25% (after the first $1.6 of value from capacity release goes entirely to customers). In fiscal 2023, GSA rate increases were effective December 1, 2022 and January 1, 2023, and in fiscal 2024, GSA rate decreases were effective October 1, 2023, January 1, 2024, April 1, 2024, and October 1, 2024, primarily attributable to changes in natural gas commodity prices.

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Spire

In addition to those discussed above for Spire Missouri and Spire Alabama, Spire is affected by the following regulatory matters.

Spire Gulf has similar rate regulation to Spire Alabama. Its RSE rate-setting mechanism was renewed in September 2021 for a four-year term through September 2025. The RSE allowed RCE range is 9.70% to 10.30% with an adjusting point of 9.95% for fiscal 2022 through fiscal 2025. Spire Gulf filed its RSE point of test as of April 30, 2023 with the APSC reflecting that its projected RCE exceeded the allowed RCE resulting in an annualized refund of $1.8 that became effective July 1, 2023. Spire Gulf’s September 30, 2024 RSE point of test reflected that its actual RCE still exceeded the allowed RCE, resulting in an additional annualized refund of $2.0 that became effective December 13, 2023. In the first quarter of fiscal 2024, Spire Gulf made its annual RSE filing (based on its budget for fiscal 2024) reflecting a further increase in annual revenues of $2.7 which also became effective December 13, 2023. On October 25, 2024, Spire Gulf made its annual RSE filing (based on its budget for fiscal 2025) reflecting a further increase in annual revenues of $1.9, pending regulatory review. The final budget was filed and approved on December 2, 2024, reflecting an approved increase in annual revenues o f $1.3, with new rates effective December 4, 2024. On October 23, 2025, Spire Gulf made its annual RSE filing (based on its budget for fiscal 2026) reflecting a further increase in annual revenues of $3.5, pending regulatory review. Spire Gulf’s CCM has evaluation and recovery provisions when expenses exceed or are under a band of plus or minus 1.50% around the CPI-U inflated O&M per customer expense level from the base year, excluding expenses for pensions and gas bad debt. The base year for the O&M index was 2021 for fiscal 2022. Since a CCM benefit was recorded in fiscal 2022, the base year O&M index for fiscal 2023 through fiscal 2025 will be the 2022 O&M level. Spire Gulf’s O&M for fiscal 2024 was within the O&M per customer inflation adjusted band. Spire Gulf’s O&M for fiscal 2025 reflected a benefit of $0.2. Spire Gulf has a Cast Iron Main Replacement Factor (CIF) that provides an enhanced return on the pro-rata costs associated with cast iron main replacement exceeding 10 miles per year based on a 75% weighting for the equity content. Capital expenditures recovered under the CIF have not increased since fiscal 2019 pursuant to applicable tariff provisions although the Company is continuing to recover costs of service associated with accumulated expenditures under the CIF. Spire Gulf also has an ESR for negative revenue variances over $0.1 or a force majeure event expense of $0.1 (or two events that exceed $0.15) and an Environmental Cost Recovery Factor that recovers 90% of prudently incurred costs for compliance with environmental laws, rules and regulations. Spire Gulf has an APSC-approved intercompany revolving credit agreement with Spire to borrow in a principal amount not to exceed $75.0 and to loan up to $25.0.

Spire Mississippi utilizes a formula rate-making process under the RSA. An allowed return on equity (currently 10.73%) is computed annually and compared to the actual return on equity based on a rate year ending June 30. If the actual equity return on an end of period rate base is beyond the allowed return on equity by 1.0%, then 75% of any shortfall is recovered through a rate increase and 50% of any excess results in a rate decrease. Updates may include known and measurable adjustments to historic costs from the 12 months ended June 30, submitted September 15 for an effective date of November 1, unless disputed by the Mississippi Public Utilities Staff (MPUS), with any disputes to be resolved by the Mississippi Public Service Commission (MSPSC) by January 15 of the following year. The MSPSC approved stipulation agreements between the MPUS and Spire Mississippi that provided for increased annual revenues of $0.8, $1.0, and $0.6 through rates effective on January 1, 2023, January 1, 2024, and January 1, 2025, respectively. Spire Mississippi’s RSA filing made on September 12, 2025 reflected a further rate increase of approximately $0.8 and is pending review by the MPUS. Additionally, a Supplemental Growth Rider provides recovery of certain Spire Mississippi system expansion projects to serve qualified economic development projects.

16. COMMITMENTS AND CONTINGENCIES

Commitments

The Company and the Utilities have entered into contracts with various counterparties, expiring on dates through calendar 2039, for the storage, transportation, and supply of natural gas. Minimum payments required under the contracts in place at September 30, 2025, are estimated at $1,762.8, $1,388.9 and $557.2 for the Company (excluding commitments between subsidiaries), Spire Missouri and Spire Alabama, respectively. Additional contracts are generally entered into prior to or during the heating season of November through April. The Utilities recover their costs from customers in accordance with their PGA clauses or GSA riders.

Spire is a limited partner in several unconsolidated partnerships, predominantly focusing on sustainability and development initiatives tied to the natural gas utility sector. Spire committed to contribute a total of $25.0 of capital to the partnerships as and when requested by the respective general partners. As of September 30, 2025, the total remaining unfunded commitment was $15.4.

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Contingencies

The Company and the Utilities account for contingencies, including environmental liabilities, in accordance with accounting standards under the loss contingency guidance of ASC Topic 450, Contingencies, when it is probable that a liability has been incurred and the amount of the loss can be reasonably estimated.

In addition to matters noted below, the Company and the Utilities are involved in other litigation, claims, and investigations arising in the normal course of business. Management, after discussion with counsel, believes the final outcome will not have a material effect on the statements of income, balance sheets, and statements of cash flows of the Company, Spire Missouri, or Spire Alabama. However, there is uncertainty in the valuation of pending claims and prediction of litigation results.

The Company and the Utilities own and operate natural gas distribution, transmission, and storage facilities, the operations of which are subject to various environmental laws, regulations, and interpretations. While environmental issues resulting from such operations arise in the ordinary course of business, such issues have not materially affected the Company’s or Utilities’ financial position and results of operations. As environmental laws, regulations, and their interpretations change, the Company or the Utilities may incur additional environmental liabilities that may result in additional costs, which may be material.

In the natural gas industry, many gas distribution companies have incurred environmental liabilities associated with sites they or their predecessor companies formerly owned or operated where manufactured gas operations took place. The Utilities each have former manufactured gas plant ("MGP") operations in their respective service territories, some of which are discussed under the Spire Missouri and Spire Alabama headings below. To the extent costs are incurred associated with environmental remediation activities, the Utilities would request authority from their respective regulators to defer such costs (less any amounts received from insurance proceeds or as contributions from other potentially responsible parties (PRPs)) and collect them through future rates.

To date, costs incurred for all Spire MGP sites for investigation, remediation and monitoring have not been material. However, the amount of costs relative to future remedial actions at these and other sites is unknown and may be material. The actual future costs that Spire Missouri and Spire Alabama may incur could be materially higher or lower depending upon several factors, including whether remediation will be required, final selection and regulatory approval of any remedial actions, changing technologies and government regulations, the ultimate ability of other PRPs to pay, and any insurance recoveries.

In 2020, Spire retained an outside consultant to conduct probabilistic cost modeling of its former MGP sites in Missouri and Alabama. The purpose of this analysis was to develop an estimated range of probabilistic future liability for each of their MGP sites. That analysis, completed in March 2021, provided a range of demonstrated possible future expenditures to investigate, monitor and remediate the former MGP sites. Spire Missouri and Spire Alabama have recorded their best estimates of the probable expenditures that relate to these matters. The amount remains immaterial, and Spire Missouri, Spire Alabama and the Company do not expect potential liabilities that may arise from remediating these sites to have a material impact on their future financial condition or results of operations.

Spire Missouri

Spire Missouri has identified three former MGP sites in the city of St. Louis, Missouri (the “City”) where costs have been incurred and claims have been asserted. Spire Missouri has enrolled two of the sites in the Missouri Department of Natural Resources ("MoDNR") Brownfields/Voluntary Cleanup Program ("BVCP"). The third site is the result of an assertion by the United States Environmental Protection Agency ("EPA").

In conjunction with redevelopment of the Carondelet Coke site, Spire Missouri and another former owner of the site entered into an agreement (the “Remediation Agreement”) with the City development agencies, the developer, and an environmental consultant that obligates one of the City agencies and the environmental consultant to remediate the site and obtain a No Further Action ("NFA") letter from the MoDNR. The Remediation Agreement also provides for a release of Spire Missouri and the other former site owner from certain liabilities related to the past and current environmental condition of the site and requires the developer and the environmental consultant to maintain certain insurance coverage, including remediation cost containment, premises pollution liability, and professional liability. The operative provisions of the Remediation Agreement were triggered on December 20, 2010, on which date Spire Missouri and the other former site owner, as full consideration under the Remediation Agreement, paid a small percentage of the cost of remediation of the site. The property was divided into seven parcels, and MoDNR NFA letters have been received for six of the parcels. Remediation is ongoing on the last parcel.

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In May 2023, Spire Missouri was approached by a real estate developer interested in purchasing the northern half of the second site, Station A, and developing the same for industrial purposes. Consequently, Spire Missouri entered into a cost sharing agreement for remedial investigation with other PRPs. The site developer, Spire Missouri and the PRPs collectively designed a site investigation plan which was submitted to the MoDNR and approved by the agency on August 27, 2024. A lead environmental engineering firm is now managing the ongoing site investigation process.

Additionally, in correspondence dated November 30, 2016, Region 7 of the EPA has asserted that Spire Missouri is liable under Section 107(a) of the Comprehensive Environmental Response, Compensation, and Liability Act of 1980 ("CERCLA") for alleged coal gas waste contamination at a third site, Station B. Spire Missouri and the site owner notified the EPA that information and data provided by the EPA to date does not rise to the level of documenting a threat to the public health or environment. As such, in March 2017 Spire Missouri requested more information from the EPA. Spire Missouri never received a response from the EPA.

Spire Missouri has notified its insurers that it seeks reimbursement for costs incurred in the past and future potential liabilities associated with these MGP sites. While some of the insurers have denied coverage and reserved their rights, Spire Missouri retains the right to seek potential reimbursements from them.

On March 10, 2015, Spire Missouri received a Section 104(e) information request under CERCLA from EPA Region 7 regarding the former Thompson Chemical/Superior Solvents site in the City. In turn, Spire Missouri issued a Freedom of Information Act ("FOIA") request to the EPA on April 3, 2015, to identify the basis of the inquiry. The FOIA response from the EPA was received on July 15, 2015, and a response was provided to the EPA on August 15, 2015. Spire Missouri has received no further inquiry from the EPA regarding this matter.

In its western service area, Spire Missouri has six owned MGP sites enrolled in the BVCP, including Joplin MGP #1, St. Joseph MGP #1, Kansas City Coal Gas Station B, Kansas City Station A Railroad area, Kansas City Coal Gas Station A, and Independence MGP #2. Source removal has been conducted at all the owned sites since 2003 with the exception of Joplin. On September 15, 2016, a request was made with the MoDNR for a restrictive covenant use limitation with respect to Joplin. Remediation efforts at the six sites are at various stages of completion, ranging from groundwater monitoring and sampling following source removal activities to the aforementioned request for the Joplin site. As part of its participation in the BVCP, Spire Missouri communicates regularly with the MoDNR with respect to its remediation efforts and monitoring activities at these sites. On May 11, 2015, MoDNR approved the next phase of investigation at the Kansas City Station A Railroad area.

Spire Alabama

Spire Alabama is in the chain of title of nine former MGP sites, four of which it still owns, and five former manufactured gas distribution sites, one of which it still owns. All sites are located in the state of Alabama.

In 2011, a removal action was completed and an NFA letter was received at the Huntsville MGP site pursuant to an Administrative Settlement Agreement and Order on Consent among the EPA, Spire Alabama and the current site owner.

In 2012, Spire Alabama responded to an EPA Request for Information Pursuant to Section 104 of CERCLA relating to the 35th Avenue Superfund Site located in North Birmingham, Jefferson County, Alabama. Spire Alabama was identified as a PRP under CERCLA for the cleanup of the site or costs the EPA incurs in cleaning up the site. At this point, Spire Alabama has not been provided information that would allow it to determine the extent, if any, of its potential liability with respect to the 35th Avenue Superfund Site and vigorously denies its inclusion as a PRP.

Assessments were performed by the EPA of the former MGP sites in Gadsden and Anniston, and NFA letters were received after each assessment.

Spire

In addition to those discussed above for Spire Missouri and Spire Alabama, Spire is aware of the following contingent matters.

Spire Marketing, along with many natural gas industry participants, faced the unprecedented effects of Winter Storm Uri in February 2021. Numerous natural gas producers and midstream operators were unable to deliver natural gas to market as they experienced wellhead freeze-offs, power outages and equipment failure due to the extreme weather. These events resulted in supply curtailments, and related notices of force majeure to excuse performance, from and to certain counterparties. Further, these events made Spire Marketing subject to various commercial disputes, all of which have been settled and reflected in the financial statements in previous periods. As a result of participating in the Oklahoma natural gas market, Spire Marketing has become subject, along with other market participants, to a complaint filed in January 2025 by the State of Oklahoma related to its transactions with various counterparties in the state during this period. The

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Company’s management continues to assess this matter but does not believe it will have a material impact on the Company’s financial position, results of operations or cash flow.

17. LEASES

The lease agreement covering the Company’s primary office space in St. Louis extends through February 2035, with an option to renew for an additional five years. Spire Alabama’s lease agreement for office space in Birmingham extends through January 2037, with an option to renew for two additional five-year terms. The lease agreement covering Spire Marketing and Spire Storage office space in Houston extends through December 2028, with options to terminate three years earlier or to renew for an additional five years. The renewal options in the St. Louis and Houston leases were deemed reasonably certain to be exercised and are included in the lease term used to determine the right-of-use assets and lease liabilities. The Company and its subsidiaries have other relatively minor rental arrangements for real estate and equipment with remaining terms of up to nine years.

Operating lease cost, cash flow and noncash information are shown in the following table.

|  | Spire |  |  | Spire Missouri |  |  | Spire Alabama |
|  | 2025 |  |  | 2024 |  |  | 2023 |  |  | 2025 |  |  | 2024 |  |  | 2023 |  |  | 2025 |  |  | 2024 |  |  | 2023 |
Operating lease cost, including amounts capitalized |  | $ | 7.1 |  |  | $ | 7.3 |  |  | $ | 7.3 |  |  | $ | 0.5 |  |  | $ | 0.5 |  |  | $ | 0.5 |  |  | $ | 2.0 |  |  | $ | 2.0 |  |  | $ | 2.0 |
Operating cash flows representing cash paid for amounts included in the measurement of lease liabilities |  |  | 7.3 |  |  |  | 7.4 |  |  |  | 7.3 |  |  |  | 0.5 |  |  |  | 0.5 |  |  |  | 0.5 |  |  |  | 2.2 |  |  |  | 2.1 |  |  |  | 2.1 |
Right-of-use assets obtained in exchange for lease liabilities |  |  | — |  |  |  | — |  |  |  | 0.8 |  |  |  | — |  |  |  | — |  |  |  | 0.8 |  |  |  | — |  |  |  | — |  |  |  | — |

The following table shows year-end balance sheet and weighted-average information about operating leases.

|  | Spire |  |  | Spire Missouri |  |  | Spire Alabama |
|  | 2025 |  |  | 2024 |  |  | 2025 |  |  | 2024 |  |  | 2025 |  |  | 2024 |
Right-of-use assets |  | $ | 59.2 |  |  | $ | 63.1 |  |  | $ | 1.6 |  |  | $ | 1.7 |  |  | $ | 17.0 |  |  | $ | 18.1 |
Lease liabilities, current |  |  | 6.1 |  |  |  | 6.6 |  |  |  | 0.5 |  |  |  | 0.5 |  |  |  | 2.0 |  |  |  | 1.9 |
Lease liabilities, noncurrent |  |  | 59.1 |  |  |  | 62.7 |  |  |  | 1.2 |  |  |  | 1.3 |  |  |  | 20.9 |  |  |  | 22.3 |
Weighted-average remaining lease term (in years) |  |  | 12.6 |  |  |  | 13.5 |  |  |  | 4.8 |  |  |  | 5.1 |  |  |  | 11.3 |  |  |  | 12.3 |
Weighted-average discount rate |  |  | 4.2 | % |  |  | 4.2 | % |  |  | 3.8 | % |  |  | 3.4 | % |  |  | 3.7 | % |  |  | 3.7 | %

On the balance sheets, right-of-use assets are included in “Deferred Charges and Other Assets: Other,” current lease liabilities are in “Current Liabilities: Other,” and noncurrent lease liabilities are in “Deferred Credits and Other Liabilities: Other.”

Following is a maturity analysis by fiscal year for operating lease liabilities as of September 30, 2025.

|  | Spire |  |  | Spire Missouri |  |  | Spire Alabama |
2026 |  | $ | 6.3 |  |  | $ | 0.5 |  |  | $ | 2.0 |
2027 |  |  | 6.7 |  |  |  | 0.4 |  |  |  | 2.3 |
2028 |  |  | 6.8 |  |  |  | 0.3 |  |  |  | 2.3 |
2029 |  |  | 6.7 |  |  |  | 0.3 |  |  |  | 2.4 |
2030 |  |  | 6.7 |  |  |  | 0.2 |  |  |  | 2.4 |
Thereafter |  |  | 51.3 |  |  |  | 0.2 |  |  |  | 16.9 |
Total undiscounted lease payments |  |  | 84.5 |  |  |  | 1.9 |  |  |  | 28.3 |
Less present value discount |  |  | (19.3 | ) |  |  | (0.2 | ) |  |  | (5.4 | )
Total current and noncurrent lease liabilities |  | $ | 65.2 |  |  | $ | 1.7 |  |  | $ | 22.9 |

There are no significant finance leases, short-term leases, subleases, variable lease payments, residual value guarantees, restrictions or covenants pertaining to leases.

The Company elected, for all asset classes, not to recognize right-of-use assets and lease liabilities for short-term leases. Instead, the lease payments for short-term leases are recognized in profit or loss on a straight-line basis over the lease term and variable lease payments are recognized in the period in which the obligation for those payments is incurred. The Company elected, for all asset classes, not to separate non-lease components from lease components and instead to account for each separate lease component and the non-lease components associated with that lease component as a single lease component.

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The discount rate used for all the leases is the applicable incremental borrowing rate, which is the rate of interest that a lessee would have to pay to borrow on a collateralized basis over a similar term an amount equal to the lease payments in a similar economic environment. For a subsidiary lessee, the rate applicable to the subsidiary is used unless the lease terms are influenced by parent credit.

18. BUSINESS COMBINATIONS

On January 19, 2024, a subsidiary in Spire’s Midstream segment acquired MoGas, an interstate natural gas pipeline, and Omega Pipeline, a connected gas distribution system in Missouri. MoGas interconnects with Spire STL Pipeline and other regional pipelines to deliver gas to Spire Missouri’s growing customer base in St. Charles, Franklin, and western St. Louis counties, among other utility, municipal, industrial and commercial customers. Omega owns and operates an approximately 75-mile natural gas distribution system within Fort Leonard Wood in south-central Missouri and is interconnected with the MoGas system. The acquisition was accounted for as a business combination in accordance with ASC 805, Business Combinations. The $176.1 purchase price was allocated almost entirely to property, plant and equipment based on their estimated fair value at the acquisition date and recorded as non-utility property in the consolidated balance sheet. The operating revenues and operating income of MoGas and Omega were not material to Spire’s consolidated results for the years ended September 30, 2025 or 2024.

Pending Acquisition

On July 27, 2025, Spire entered into an agreement with Piedmont Natural Gas, a wholly-owned subsidiary of Duke Energy, to acquire its Tennessee natural gas business. The purchase price is $2.48 billion in cash, subject to customary adjustments, including adjustments for net working capital, regulatory assets and liabilities, and capital expenditures at closing.

The acquisition is supported by a fully committed senior unsecured bridge facility, entered into on August 22, 2025, provided by a syndicate of banks led by BMO Capital Markets. The facility provides up to $2.48 billion in committed financing, consisting of a $1.88 billion bridge term loan and a $600 million delayed draw term loan. The loans bear interest at Adjusted Term SOFR plus 1.375% or Base Rate plus 0.375%, and mature 364 days after funding. As of September 30, 2025, the facility remains undrawn, and Spire does not currently anticipate drawing on it. The Company expects to permanently finance the transaction through a balanced mix of debt, equity, and hybrid securities.

In connection with the financing plan, Spire is considering selling its natural gas storage facilities, Spire Storage West LLC and Spire Storage Salt Plains LLC, to help fund the acquisition. The sale would be subject to board approval and customary closing conditions, including regulatory approval.

The Company expects the acquisition to significantly increase Spire’s scale of regulated business in one of the fastest growing regions in the U.S., expand regulatory diversity and provide accretive earnings and supports dividend growth. Upon closing, Piedmont’s Tennessee business will operate as Spire Tennessee.

The transaction is expected to close in the first quarter of calendar 2026, subject to customary closing conditions, including approval by the TPUC. On October 31, 2025, FERC approved the transfer of gas supply contracts to Spire. Th e applicable waiting period under the Hart-Scott-Rodino Antitrust Improvements Act expired without objection, satisfying one of the key regulatory requirements for the transaction.

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Ite m 9. Changes in and Disagreements with Accountants on Accounting and Financial Disclosure

There have been no changes in or disagreements on accounting and financial disclosure with Spire’s, Spire Missouri’s, or Spire Alabama’s outside auditors that are required to be disclosed.

It em 9A. Controls and Procedures

Spire

Management Report on Internal Control over Financial Reporting

Management is responsible for establishing and maintaining adequate internal controls over financial reporting. Spire Inc.’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with accounting principles generally accepted in the United States of America. Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements and can provide only reasonable assurance with respect to financial statement preparation and presentation. Also, projections of any evaluation of effectiveness to future periods are subject to the risks that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

Spire Inc.’s management, including its Chief Executive Officer and Chief Financial Officer, conducted an assessment of the effectiveness of Spire Inc.’s internal control over financial reporting as of September 30, 2025. In making this assessment, management used the criteria in Internal Control – Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission. Based on that assessment, management concluded that Spire Inc.’s internal control over financial reporting was effective as of September 30, 2025. Deloitte & Touche LLP, an independent registered public accounting firm, has issued an attestation report on Spire Inc.’s internal control over financial reporting, which is included in Item 8, Financial Statements and Supplementary Data.

Evaluation of Disclosure Controls and Procedures

As of the end of the period covered by this report, we carried out an evaluation, under the supervision and with participation of our management, including our Chief Executive Officer and Chief Financial Officer, of the effectiveness of the design and operation of our disclosure controls and procedures pursuant to Rule 13a-15(e) and Rule 15d-15(e) under the Securities Exchange Act of 1934, as amended. Based upon such evaluation, the Chief Executive Officer and Chief Financial Officer concluded that our disclosure controls and procedures are effective.

Change in Internal Control over Financial Reporting

There were no changes in our internal control over financial reporting that occurred during our fourth fiscal quarter that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

Spire Missouri

Management Report on Internal Control over Financial Reporting

Management is responsible for establishing and maintaining adequate internal controls over financial reporting. Spire Missouri Inc.’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with accounting principles generally accepted in the United States of America. Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements and can provide only reasonable assurance with respect to financial statement preparation and presentation. Also, projections of any evaluation of effectiveness to future periods are subject to the risks that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

Spire Missouri Inc.’s management, including its Chief Executive Officer and Chief Financial Officer, conducted an assessment of the effectiveness of Spire Missouri Inc.’s internal control over financial reporting as of September 30, 2025. In making this assessment, management used the criteria in Internal Control – Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission. Based on that assessment, management concluded that Spire Missouri Inc.’s internal control over financial reporting was effective as of September 30, 2025.

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Evaluation of Disclosure Controls and Procedures

As of the end of the period covered by this report, we carried out an evaluation, under the supervision and with participation of our management, including our Chief Executive Officer and Chief Financial Officer, of the effectiveness of the design and operation of our disclosure controls and procedures pursuant to Rule 13a-15(e) and Rule 15d-15(e) under the Securities Exchange Act of 1934, as amended. Based upon that evaluation, the Chief Executive Officer and Chief Financial Officer concluded that our disclosure controls and procedures are effective.

Changes in Internal Control over Financial Reporting

There were no changes in our internal control over financial reporting that occurred during our fourth fiscal quarter that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

Spire Alabama

Management Report on Internal Control over Financial Reporting

Management is responsible for establishing and maintaining adequate internal controls over financial reporting. Spire Alabama Inc.’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with accounting principles generally accepted in the United States of America. Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements and can provide only reasonable assurance with respect to financial statement preparation and presentation. Also, projections of any evaluation of effectiveness to future periods are subject to the risks that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

Spire Alabama Inc.’s management, including its Chief Executive Officer and Chief Financial Officer, conducted an assessment of the effectiveness of Spire Alabama Inc.’s internal control over financial reporting as of September 30, 2025. In making this assessment, management used the criteria in Internal Control – Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission. Based on that assessment, management concluded that Spire Alabama Inc.’s internal control over financial reporting was effective as of September 30, 2025.

Evaluation of Disclosure Controls and Procedures

As of the end of the period covered by this report, we carried out an evaluation, under the supervision and with participation of our management, including our Chief Executive Officer and Chief Financial Officer, of the effectiveness of the design and operation of the disclosure controls and procedures pursuant to Rule 13a-15(e) and Rule 15d-15(e) under the Securities Exchange Act of 1934, as amended. Based upon that evaluation, the Chief Executive Officer and Chief Financial Officer concluded that our disclosure controls and procedures are effective.

Changes in Internal Control over Financial Reporting

There were no changes in our internal control over financial reporting that occurred during our fourth fiscal quarter that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

It em 9B. Other Information

During the quarterly period ended September 30, 2025, no director or officer of the Company adopted or terminated any contract, instruction or written plan for the purchase or sale of securities of the Company intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) of the Exchange Act or any “non-Rule 10b5-1 trading arrangement” (as defined in the Exchange Act).

Ite m 9C. Disclosure Regarding Foreign Jurisdictions that Prevent Inspections

Not applicable.

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PA RT III

Ite m 10. Directors, Executive Officers and Corporate Governance

Information about:

•
our directors is incorporated by reference from the discussion under Proposal 1 of our proxy statement to be filed on or about December 16, 2025 (“2025 proxy statement”);
•
our executive officers is reported at the end of Part I of this Form 10-K;
•
our Financial Code of Ethics is posted on our website, www.SpireEnergy.com, under Investors/Governance/Governance documents (http://investors.spireenergy.com/governance/governance-documents); and
•
our Audit Committee, our Audit Committee financial experts, and submitting nominations to the Corporate Governance Committee

is incorporated by reference from the discussion in our 2025 proxy statement under the heading “Governance.”

In addition, our Code of Conduct, Corporate Governance Guidelines, and charters for our Audit, Compensation and Corporate Governance Committees are available under “Governance documents” on our website, as indicated above, and a copy will be sent to any shareholder upon written request.

We maintain insider trading policies and procedures governing the purchase, sale, and/or other dispositions of the Company’s securities by directors, officers and employees that are reasonably designed to promote compliance with insider trading laws, rules and regulations, and any listing standards applicable to the Company. A copy of the Company’s “Purchases and Sales of Securities and Prevention of Selective Disclosure Policy” insider trading policy has been filed as Exhibit 19 to this Annual Report.

Ite m 11. Executive Compensation

Information about director and executive compensation is incorporated by reference from the discussion in our 2025 proxy statement under the headings “Directors’ compensation” and “Executive compensation.”

Ite m 12. Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters

Information about:

•
security ownership of certain beneficial owners and management and
•
aggregate information regarding the Company’s equity compensation plan

is incorporated by reference from the discussion in our 2025 proxy statement under “Beneficial ownership of Spire stock.”

Ite m 13. Certain Relationships and Related Transactions, and Director Independence

Information about:

•
our policy and procedures for related party transactions and
•
the independence of our directors

is included in our 2025 proxy statement under “Governance” and is incorporated by reference. There were no related party transactions in fiscal 2025.

Ite m 14. Principal Accounting Fees and Services

Information about fees paid to our independent registered public accountant and our policy for pre-approval of services provided by our independent registered public accountant is incorporated by reference from our 2025 proxy statement under “Fees of independent registered public accountant” and “Governance,” respectively.

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PA RT IV

Ite m 15. Exhibits, Financial Statement Schedules

(a) | (1) Financial Statements

See Item 8, Financial Statements and Supplementary Data, filed herewith, for a list of financial statements.

| (2) Financial Statement Schedules

Schedules have been omitted because they are not applicable, related significance tests were not met, or the required data has been included in the financial statements or notes to financial statements.

| (3) Exhibits

Exhibit Number |  | Description
2.01* |  | Agreement and Plan of Merger and Reorganization; filed as Appendix A to proxy statement/prospectus contained in the Company’s Registration Statement on Form S-4 filed October 27, 2000, No. 333-48794.
3.01* |  | Articles of Incorporation of Spire Inc., as amended, effective as of April 28, 2016; filed as Exhibit 3.1 to the Company’s Current Report on Form 8-K on May 3, 2016.
3.02* |  | Amended Bylaws of Spire Inc., effective as of July 27, 2023; filed as Exhibit 3.1 to the Company’s Current Report on Form 8-K on July 28, 2023.
3.03* |  | Spire Missouri Inc.’s Amended Articles of Incorporation, as amended, effective August 30, 2017; filed as Exhibit 3.1 to Spire Missouri’s Current Report on Form 8-K on September 1, 2017.
3.04* |  | Amended Bylaws of Spire Missouri Inc., effective as of March 26, 2020; filed as Exhibit 3.1 to Spire Missouri’s Current Report on Form 8-K on March 27, 2020.
3.05* |  | Articles of Amendment of the Articles of Incorporation of Spire Alabama Inc., dated September 1, 2017; filed as Exhibit 3.3 to Spire Alabama’s Current Report on Form 8-K filed September 1, 2017.
3.06* |  | Amended Bylaws of Spire Alabama Inc. effective March 26, 2020; filed as Exhibit 3.2 to Spire Alabama’s Current Report on Form 8-K on March 27, 2020.
3.07* |  | Certificate of Designations with respect to the Series A Preferred Stock, dated May 16, 2019; filed as Exhibit 3.1 to the Company’s Current Report on Form 8-K on May 21, 2019.
4.01*3 |  | Mortgage and Deed of Trust, dated as of February 1, 1945, between Laclede Gas Company and Mississippi Valley Trust Company; filed as Exhibit 4.10 to the Company's Registration Statement on Form S-3 (No. 333-264799) on May 9, 2022.
4.02*3 |  | Fourteenth Supplemental Indenture, dated as of October 26, 1976, between Laclede Gas and Mercantile Trust Company National Association; filed as Exhibit 4.11 to the Company's Registration Statement on Form S-3 (No. 333-264799) on May 9, 2022.
4.03*†3 |  | Laclede Gas Board of Directors’ Resolution dated August 28, 1986 which generally provides that the Board may delegate its authority in the adoption of certain employee benefit plan amendments to certain designated Executive Officers; filed as Exhibit 4.12 to Laclede Gas’ Annual Report on Form 10-K for the fiscal year ended September 30, 1991.
4.04*†2 |  | Indenture dated as of November 1, 1993, between Alagasco and NationsBank of Georgia, National Association, Trustee, (“Alagasco 1993 Indenture”); filed as Exhibit 4(k) to Alagasco’s Registration Statement on Form S-3 (Registration No. 33-70466).
4.05*3 |  | Twenty-Fourth Supplemental Indenture, dated as of June 1, 1999, between Laclede Gas and State Street Bank and Trust Company of Missouri, N.A., as trustee; filed as Exhibit 4.01 to Laclede Gas’ Current Report on Form 8-K on June 4, 1999.
4.06*3 |  | Twenty-Fifth Supplemental Indenture, dated as of September 15, 2000, between Laclede Gas and State Street Bank and Trust Company of Missouri, as trustee; filed as Exhibit 4.01 to Laclede Gas’ Current Report on Form 8-K on September 29, 2000.
4.07*3 |  | Laclede Gas’ Board of Directors’ Resolutions dated March 27, 2003, updating authority delegated pursuant to August 28, 1986 Laclede Gas resolutions; filed as Exhibit 4.19(a) to Laclede Gas’ Annual Report on Form 10-K for the fiscal year ended September 30, 2003.
4.08*3 |  | Twenty-Eighth Supplemental Indenture, dated as of April 15, 2004, between Laclede Gas and UMB Bank & Trust, N.A., as trustee; filed as Exhibit 4.02 to Laclede Gas’ Current Report on Form 8-K on April 28, 2004.
4.09*3 |  | Twenty-Ninth Supplemental Indenture, dated as of June 1, 2006, between Laclede Gas and UMB Bank and Trust, N.A., as trustee; filed as Exhibit 4.1 to Laclede Gas’ Current Report on Form 8-K on June 9, 2006.

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Exhibit Number |  | Description
4.10*2 |  | Officers’ Certificate, dated January 16, 2007, pursuant to Section 301 of the Alagasco 1993 Indenture setting forth the terms of the 5.90 percent Notes due January 15, 2037; filed as Exhibit 4.2 to Alagasco’s Current Report on Form 8-K on January 16, 2007.
4.11*3 |  | Thirty-First Supplemental Indenture, dated as of March 15, 2013, between Laclede Gas and UMB Bank & Trust, N.A., as trustee (including Form of First Mortgage Bond, 3.40% Series due March 15, 2028); filed as Exhibit 4.1 to Laclede Gas’ Form 10-Q for the quarter ended March 31, 2013.
4.12*3 |  | Thirty-Second Supplemental Indenture, dated as of August 13, 2013, between Laclede Gas and UMB Bank & Trust, N.A., as trustee (including Form of First Mortgage Bond, 4.625% Series due August 15, 2043); filed as Exhibit 4.1 to Laclede Gas’ Current Report on Form 8-K on August 13, 2013.
4.13* |  | Indenture, dated as of August 19, 2014, between the Company and UMB Bank & Trust, N.A., as trustee; filed as Exhibit 4.1 to the Company’s Current Report on Form 8-K on August 19, 2014.
4.14* |  | First Supplemental Indenture, dated as of August 19, 2014, between the Company and UMB Bank & Trust, N.A., as trustee (including Form of Floating Rate Senior Notes due 2017, Form of 2.55% Senior Notes due 2019 and Form of 4.70% Senior Notes due 2044); filed as Exhibit 4.2 to the Company’s Current Report on Form 8-K on August 19, 2014.
4.15*2 |  | Master Note Purchase Agreement, dated as of June 5, 2015, among Alagasco and certain institutional purchasers; filed as Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2015.
4.16* |  | Master Note Purchase Agreement dated June 20, 2016, among Spire Inc. and certain institutional purchasers party thereto; filed as Exhibit 4.2 to the Company’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2017.
4.17* |  | First Supplement to Master Note Purchase Agreement dated as of March 15, 2017, among Spire Inc. and certain institutional purchasers party thereto (including Form of 3.93% Series 2017 Senior Note, Tranche C, due March 15, 2027); filed as Exhibit 4.3 to the Company’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2017.
4.18*3 |  | Bond Purchase Agreement dated March 20, 2017, among Laclede Gas Company and certain institutional purchasers party thereto; filed as Exhibit 4.4 to the Laclede Gas’ Quarterly Report on Form 10-Q for the quarter ended March 31, 2017.
4.19* |  | First Supplement to Master Note Purchase Agreement, dated as of December 1, 2017, between Spire Alabama Inc. and certain institutional investors (including Form of 4.02% Series 2017A Senior Note, due January 15, 2058, and Form of 3.92% Series 2017B Senior Note, due January 15, 2048); filed as Exhibit 4.01 to the Company’s Quarterly Report on Form 10-Q for the quarter ended December 31, 2017.
4.20* |  | Second Supplement to Master Note Purchase Agreement, dated as of January 15, 2019, between Spire Alabama Inc. and certain institutional investors (including Form of 4.64% Series 2019A Senior Note, due January 15, 2049); filed as Exhibit 4.1 to Spire Alabama’s Current Report on Form 8-K on January 22, 2019.
4.21* |  | Deposit Agreement, dated as of May 21, 2019, among the Company, Computershare Inc. and Computershare Trust Company, N.A., acting jointly as depositary, and the holders from time to time of the depositary receipts described therein; filed as Exhibit 4.1 to the Company’s Current Report on Form 8-K on May 21, 2019.
4.22* |  | Form of depositary receipt representing the Depositary Shares; filed as Exhibit A to Exhibit 4.1 to the Company’s Current Report on Form 8-K on May 21, 2019.
4.23* |  | Form of Certificate representing the Series A Preferred Stock; filed as Exhibit A to Exhibit 3.1 to the Company’s Current Report on Form 8-K on May 21, 2019.
4.24* |  | Thirty-Third Supplemental Indenture, dated as of September 15, 2017, between Spire Missouri Inc. and UMB Bank & Trust, N.A., as trustee (including Form of First Mortgage Bond, 3.68% Series A due September 15, 2032); filed as Exhibit 4.28 to Spire Missouri’s Annual Report on Form 10-K for the fiscal year ended September 30, 2019.
4.25* |  | Thirty-Fourth Supplemental Indenture, dated as of November 12, 2019, between Spire Missouri Inc. and UMB Bank & Trust, N.A., as trustee (including Form of 2.84% First Mortgage Bonds due November 15, 2029); filed as Exhibit 4.1 to Spire Missouri’s Quarterly Report on Form 10-Q for the quarter ended December 31, 2019.
4.26* |  | Third Supplement to Master Note Purchase Agreement, dated as of December 2, 2019, between Spire Alabama Inc. and certain institutional investors (including Form of 2.88% Series 2019B Senior Note, due December 1, 2029); filed as Exhibit 4.1 to Spire Alabama’s Current Report on Form 8-K on December 4, 2019.
4.27* |  | Description of Securities Registered Pursuant to Section 12 of the Securities Exchange Act of 1934; filed as Exhibit 4.29 to the Company’s Annual Report on Form 10-K for the fiscal year ended September 30, 2019.

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Exhibit Number |  | Description
4.28* |  | Fourth Supplement to Master Note Purchase Agreement, dated as of December 15, 2020, between Spire Alabama Inc. and certain institutional investors (including Form of Series 2020 Senior Note, due December 15, 2030); filed as Exhibit 4.1 to Spire Alabama’s Current Report on Form 8-K on December 18, 2020.
4.29* |  | Thirty-Fifth Supplemental Indenture, dated as of May 20, 2021, between Spire Missouri and UMB Bank & Trust, N.A., as trustee (including Form of First Mortgage Bond, 3.300% Series due June 1, 2051); filed as Exhibit 4.1 to the Company’s Current Report on Form 8-K on May 20, 2021.
4.30* |  | Thirty-Seventh Supplemental Indenture, dated as of May 2, 2022, between Spire Missouri and UMB Bank & Trust, N.A., as trustee; filed as Exhibit 4.2 to the Company’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2022.
4.31* |  | Fifth Supplement to Master Note Purchase Agreement, dated as of October 13, 2022, between Spire Alabama Inc. and certain institutional investors (including Form of 5.32% Series 2022A Senior Note, due October 15, 2029); filed as Exhibit 4.1 to the Company’s and Spire Alabama’s Current Report on Form 8-K on October 19, 2022.
4.32* |  | Thirty-Eighth Supplemental Indenture, dated as of February 13, 2023, between Spire Missouri and Regions Bank, as trustee (including Form of 4.800% Series First Mortgage Bond due 2033); filed as Exhibit 4.1 to the Company’s and Spire Missouri’s Current Report on Form 8-K on February 13, 2023.
4.33* |  | Second Supplement to Master Note Purchase Agreement, dated as of March 7, 2023, between Spire Inc. and certain institutional investors (including Form of 5.80% Series 2023 Senior Note, Tranche D, due March 15, 2033); filed as Exhibit 4.2 to the Company’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2023.
4.34* |  | Securities Purchase and Registration Rights Agreement, dated February 5, 2024, among Spire Inc. and the several purchasers named in Schedule A thereto, filed as Exhibit 1.1 to the Company’s Current Report on Form 8-K on February 9, 2024.
4.35* |  | Third Supplemental Indenture, dated as of February 12, 2024, between Spire Inc. and Regions Bank, as Trustee (including Form of 5.300% Senior Notes due 2026); filed as Exhibit 4.2 to the Company’s Current Report on Form 8-K/A on February 12, 2024.
4.36* |  | Thirty-Ninth Supplemental Indenture, dated as of August 13, 2024, between Spire Missouri and Regions Bank, as trustee (including Form of First Mortgage Bond, 5.150% Series due August 15, 2034); filed as Exhibit 4.1 to the Company’s and Spire Missouri’s Current Report on Form 8-K on August 13, 2024.
4.37* |  | Fortieth Supplemental Indenture, dated as of May 1, 2025, between Spire Missouri Inc. and Regions Bank,as trustee; filed as Exhibit 4.36 to the Company’s Registration Statement on Form S-3 filed May 7, 2025.
10.01*†3 |  | Form of Indemnification Agreement between Laclede Gas and its Directors and Officers; filed as Exhibit 10.13 to Laclede Gas’ Annual Report on Form 10-K for the fiscal year ended September 30, 1990.
10.02*†3 |  | Salient Features of Laclede Gas’ Deferred Income Plan for Directors and Selected Executives, including amendments adopted by the Board of Directors on July 26, 1990; filed as Exhibit 10.12 to Laclede Gas’ Annual Report on Form 10-K for the fiscal year ended September 30, 1991.
10.03*†3 |  | Amendment to Laclede Gas’ Deferred Income Plan for Directors and Selected Executives, adopted by the Board of Directors on August 27, 1992; filed as Exhibit 10.12a to Laclede Gas’ Annual Report on Form 10-K for the fiscal year ended September 30, 1992.
10.04*3 |  | Amendment and Restatement of Retirement Plan for Non-Employee Directors of Laclede Gas as of November 1, 2002; filed as Exhibit 10.08c to Laclede Gas’ Annual Report on Form 10-K for the fiscal year ended September 30, 2002.
10.05*3 |  | Amendment to Terms of Retirement Plan for Non-Employee Directors of Laclede Gas as of October 1, 2004; filed as Exhibit 10.2 to Laclede Gas’ Quarterly Report on Form 10-Q for the quarter ended June 30, 2004.
10.06* |  | Form of Non-Qualified Stock Option Award Agreement with Mandatory Retirement Provisions; filed as Exhibit 10.1 to the Company’s Current Report on Form 8-K on November 5, 2004.
10.07* |  | Form of Non-Qualified Stock Option Award Agreement without Mandatory Retirement Provisions; filed as Exhibit 10.2 to the Company’s Current Report on Form 8-K on November 5, 2004.
10.08*3 |  | Automated Meter Reading Services Agreement with Amendment dated as of July 1, 2017, between Landis+Gyr Technology, Inc., formerly known as Cellnet Technology, Inc., and Laclede Gas Company; filed as Exhibit 10.08 to the Company's Annual Report on Form 10-K for the fiscal year ended September 30, 2020.
10.09*3 |  | Restated Laclede Gas Supplemental Retirement Benefit Plan, as amended and restated as of January 1, 2005; filed as Exhibit 10.06 to Laclede Gas’ Quarterly Report on Form 10-Q for the quarter ended December 31, 2008.

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Exhibit Number |  | Description
10.10*3 |  | Laclede Gas Supplemental Retirement Benefit Plan II, effective as of January 1, 2005; filed as Exhibit 10.7 to Laclede Gas’ Quarterly Report on Form 10-Q for the quarter ended December 31, 2008.
10.11*3 |  | Salient Features of Laclede Gas’ Deferred Income Plan II for Directors and Selected Executives (as amended and restated effective as of January 1, 2005); filed as Exhibit 10.1 to Laclede Gas’ Quarterly Report on Form 10-Q for the quarter ended December 31, 2008.
10.12* |  | Salient Features of the Company’s Deferred Income Plan for Directors and Selected Executives (effective as of January 1, 2005); filed as Exhibit 10.2 to the Company’s Quarterly Report on Form 10-Q for the quarter ended December 31, 2008.
10.13* |  | The Company’s Form of Restricted Stock Award Agreement; filed as Exhibit 10.8 to the Company’s Quarterly Report on Form 10-Q for the quarter ended December 31, 2008.
10.14*3 |  | The Laclede Group Management Continuity Protection Plan, effective as of January 1, 2005; filed as Exhibit 10.5 to the Company’s Quarterly Report on Form 10-Q for the quarter ended December 31, 2008.
10.15* |  | Form of Management Continuity Protection Agreement; filed as Exhibit 10.5a to the Company’s Quarterly Report on Form 10-Q for the quarter ended December 31, 2008.
10.16*3 |  | The Laclede Group 2011 Management Continuity Protection Plan; filed as Exhibit 10.25 to the Company’s Annual Report on Form 10-K for the fiscal year ended September 30, 2010.
10.17* |  | Form of Agreement under the Company’s 2011 Management Continuity Protection Plan; filed as Exhibit 10.25a to the Company’s Annual Report on Form 10-K for the fiscal year ended September 30, 2010.
10.18* |  | The Company’s Form of Performance Contingent Restricted Stock Unit Award Agreement; filed as Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended December 31, 2012.
10.19*3 |  | Laclede Gas Cash Balance Supplemental Retirement Benefit Plan, effective as of January 1, 2009; filed as Exhibit 10.19 to Laclede Gas’ Annual Report on Form 10-K for the fiscal year ended September 30, 2012.
10.20* |  | Lease Agreement, dated January 21, 2014, between the Company, as Tenant, and Market 700, LLC, as Landlord; filed as Exhibit 10.1 to the Company’s Current Report on Form 8-K on January 27, 2014.
10.21* |  | The Company’s Deferred Income Plan for Directors and Selected Executives, as Amended and Restated as of January 1, 2015; filed as Exhibit 10.1 to the Company’s Current Report on Form 8-K on November 4, 2014.
10.22*1 |  | The Laclede Group 2015 Equity Incentive Plan; filed as the Appendix to the Company’s Definitive Proxy Statement on Form DEF 14A on December 19, 2014.
10.23*1 |  | The Laclede Group, Inc. Annual Incentive Plan, as Amended; filed as Appendix to the Company’s Definitive Proxy Statement on Schedule 14A on December 18, 2015.
10.24*2 3 |  | Loan Agreement, dated December 14, 2016, by and among Spire Inc., Alabama Gas Corporation, Laclede Gas Company, and the several banks party thereto, including Wells Fargo Bank, National Association, as Administrative Agent; JPMorgan Chase Bank, N.A. and U.S. Bank National Association, as Co-Syndication Agents; Wells Fargo Securities, LLC, JPMorgan Chase Bank, N.A., and U.S. Bank National Association, as Joint Lead Arrangers and Joint Bookrunners; and Bank of America, N.A., Credit Suisse AG, Cayman Islands Branch, Morgan Stanley Bank, N.A., Regions Bank, Royal Bank of Canada, and TD Bank, N.A., as Documentation Agents; filed as Exhibit 99.1 to the Company’s Current Report on Form 8-K on December 16, 2016.
10.25* |  | Commercial Paper Dealer Agreement, dated December 21, 2016, between Spire Inc. and Wells Fargo Securities, LLC; filed as Exhibit 10.2 to the Company’s Quarterly Report on Form 10-Q for the quarter ended December 31, 2016.
10.26* |  | Commercial Paper Dealer Agreement, dated December 21, 2016, between Spire Inc. and Credit Suisse Securities (USA) LLC; filed as Exhibit 10.3 to the Company’s Quarterly Report on Form 10-Q for the quarter ended December 31, 2016.
10.27* |  | Spire Inc. Executive Severance Plan; filed as Exhibit 10.1 to the Company’s Current Report on Form 8-K on May 2, 2017.
10.28*1 |  | Amendment 1 to The Laclede Group Annual Incentive Plan effective January 1, 2018; filed as Exhibit 10.53 to the Company’s Annual Report on Form 10-K for the fiscal year ended September 30, 2017.
10.29*1 |  | Amendment 1 to The Laclede Group 2015 Equity Incentive Plan effective January 1, 2018; filed as Exhibit 10.54 to the Company’s Annual Report on Form 10-K for the fiscal year ended September 30, 2017.
10.30* |  | Amendment 1 to Spire Inc. Executive Severance Plan effective January 1, 2018; filed as Exhibit 10.55 to the Company’s Annual Report on Form 10-K for the fiscal year ended September 30, 2017.
10.31*1 |  | Amendment 1 to The Laclede Group 2011 Management Continuity Protection Plan effective January 18, 2018; filed as Exhibit 10.56 to the Company’s Annual Report on Form 10-K for the fiscal year ended September 30, 2017.
10.32* |  | First Amendment to Loan Agreement, dated as of October 31, 2018, by and among Spire Inc., a Missouri corporation, Spire Alabama Inc. (formerly Alabama Gas Corporation), an Alabama corporation, and Spire

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Exhibit Number |  | Description
|  | Missouri Inc. (formerly Laclede Gas Company), a Missouri corporation, the Banks from time to time party thereto, and Wells Fargo Bank, National Association, as Administrative Agent for the Banks; filed as Exhibit 10.1 to the Company’s Current Report on Form 8-K on November 6, 2018.
10.33* |  | Spire Deferred Income Plan, Amended and Restated Effective January 1, 2019; filed as Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2019.
10.34* |  | Amendment 1 to Spire Deferred Income Plan; filed as Exhibit 10.1 to the Company’s Quarterly Report on Form 10-Q for the quarter ended December 31, 2024.
10.35* |  | Spire Deferred Income Plan, Amended and Restated effective October 1, 2025; filed as Exhibit 10.4 to the Company’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2025.
10.36* |  | The Company’s Form of Restricted Stock Award Agreement; filed as Exhibit 10.38 to the Company’s Annual Report on Form 10-K for the fiscal year ended September 30, 2019.
10.37* |  | The Company’s Form of Restricted Stock Unit Award Agreement; filed as Exhibit 10.39 to the Company’s Annual Report on Form 10-K for the fiscal year ended September 30, 2019.
10.38* |  | The Company’s Form of Performance Contingent Stock Unit Award Agreement; filed as Exhibit 10.40 to the Company’s Annual Report on Form 10-K for the fiscal year ended September 30, 2019.
10.39* |  | Amended and Restated Loan Agreement, dated July 22, 2022, among Spire Inc., Spire Missouri Inc., Spire Alabama Inc., Wells Fargo Bank, National Association, as administrative agent, and the lenders party thereto as Banks; filed as Exhibit 99.1 to the Company’s Current Report on Form 8-K on July 28, 2022.
10.40* |  | Equity Distribution Agreement of the Company, dated as of February 6, 2019; filed as Exhibit 1.1 to the Company’s Current Report on Form 8-K on February 6, 2019.
10.41* |  | Letter Agreement to the Equity Distribution Agreement of the Company, dated as of May 14, 2019; filed as Exhibit 1.1 to the Company’s Current Report on Form 8-K on May 14, 2019.
10.42* |  | Second Letter Agreement to the Equity Distribution Agreement of the Company, dated as of May 9, 2022; filed as Exhibit 1.1 to the Company’s Current Report on Form 8-K on May 10, 2022.
10.43* |  | Third Letter Agreement to the Equity Distribution Agreement of the Company, dated as of February 6, 2024, filed as Exhibit 1.1 to the Company’s Current Report on Form 8-K on February 6, 2024.
10.44* |  | Second Amended and Restated Loan Agreement, dated October 11, 2024, among Spire Inc., Spire Missouri Inc., Spire Alabama Inc. Wells Fargo Bank, National Association, as administrative agent, and the lenders party thereto as Banks, filed as Exhibit 10.1 in the Company’s Current Report on Form 8-K on October 18, 2024.
10.45* |  | Employment Agreement, dated as of April 29, 2025, by and between the Company and Scott Doyle; filed as Exhibit 10.1 to the Company’s Current Report on Form 8-K/A filed April 29, 2025.
10.46* |  | Separation Agreement and General Release, dated as of April 29, 2025, by and between the Company and Steven Lindsey; filed as Exhibit 10.2 to the Company’s Current Report on Form 8-K/A filed April 29, 2025.
10.47 |  | Asset Purchase Agreement, dated as of July 27, 2025, by and between the Company, Piedmont Natural Gas Company, Inc. and Duke Energy Corporation.
10.48 |  | Commitment Letter, dated July 27, 2025, among the Company and BMO Capital Markets Corp. and respective affiliates.
10.49 |  | Delayed Draw Term Loan Agreement, dated August 22, 2025, by and among Spire Inc., BMO, as Administrative Agent.
19 |  | Purchases and Sales of Securities and Prevention of Selective Disclosure Policy; filed as Exhibit 19 to the Company's Annual Report on Form 10-K for the fiscal year ended September 30, 2025.
21 |  | Subsidiaries of the Company.
23.1 |  | Consent of Independent Registered Public Accounting Firm of the Company.
23.2 |  | Consent of Independent Registered Public Accounting Firm of Spire Missouri Inc.
23.3 |  | Consent of Independent Registered Public Accounting Firm of Spire Alabama Inc.
31.1 |  | Certifications under Rule 13a-14(a) of the CEO and CFO of the Company.
31.2 |  | Certifications under Rule 13a-14(a) of the CEO and CFO of Spire Missouri Inc.
31.3 |  | Certifications under Rule 13a-14(a) of the CEO and CFO of Spire Alabama Inc.
32.1 |  | Section 1350 Certifications under Rule 13a-14(b) of the CEO and CFO of the Company.
32.2 |  | Section 1350 Certifications under Rule 13a-14(b) of the CEO and CFO of Spire Missouri Inc.
32.3 |  | Section 1350 Certifications under Rule 13a-14(b) of the CEO and CFO of Spire Alabama Inc.
97* |  | Spire Inc. Clawback Policy; filed as Exhibit 97 to the Company's Annual Report on Form 10-K for the fiscal year ended September 30, 2024.
101 |  | Interactive Data Files including the following information from the Annual Report on Form 10-K for the fiscal year ended September 30, 2025, formatted in inline extensible business reporting language (“Inline XBRL”): (i) Cover Page Interactive Data and (ii) the Financial Statements listed on the first page of Item 8.

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Exhibit Number |  | Description
104 |  | Cover Page Interactive Data File (formatted in Inline XBRL and included in the Interactive Data Files submitted under Exhibit 101).

* Incorporated herein by reference and made a part hereof. Spire Inc. File No. 1-16681. Spire Missouri Inc. File No. 1-1822. Spire Alabama Inc. File No. 2-38960.

† Paper exhibit.

1.
The Laclede Group, Inc. changed its name to Spire Inc. effective April 28, 2016.
2.
Alabama Gas Corporation (“Alagasco”) changed its name to Spire Alabama Inc. effective September 1, 2017.
3.
Laclede Gas Company changed its name to Spire Missouri Inc. effective August 30, 2017.

Bold items reflect management contracts or compensatory plans or arrangements.

Ite m 16. Form 10-K Summary

None.

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SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

|  |  |  | Spire Inc.
Date | November 14, 2025 |  | By | /s/ Adam W. Woodard
|  |  |  | Adam W. Woodard
|  |  |  | Executive Vice President and Chief Financial Officer

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated.

Date |  | Signature |  | Title
November 14, 2025 |  | /s/ Scott E. Doyle |  | Director, President and Chief Executive Officer
|  | Scott E. Doyle |  | (Principal Executive Officer)
November 14, 2025 |  | /s/ Adam W. Woodard |  | Executive Vice President and Chief Financial Officer
|  | Adam W. Woodard |  | (Principal Financial and Accounting Officer)
November 14, 2025 |  | /s/ Rob L. Jones |  | Chairman of the Board
|  | Rob L. Jones |  |
November 14, 2025 |  | /s/ Mark A. Borer |  | Director
|  | Mark A. Borer |  |
November 14, 2025 |  | /s/ Sheri S. Cook |  | Director
|  | Sheri S. Cook |  |
November 14, 2025 |  | /s/ Vincent J. Ferrari |  | Director
|  | Vincent J. Ferrari |  |
November 14, 2025 |  | /s/ Maria V. Fogarty |  | Director
|  | Maria V. Fogarty |  |
November 14, 2025 |  | /s/ Carrie J. Hightman |  | Director
|  | Carrie J. Hightman |  |
November 14, 2025 |  | /s/ Paul D. Koonce |  | Director
|  | Paul D. Koonce |  |
November 14, 2025 |  | /s/ Brenda D. Newberry |  | Director
|  | Brenda D. Newberry |  |
November 14, 2025 |  | /s/ John P. Stupp Jr. |  | Director
|  | John P. Stupp Jr. |  |

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Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

|  |  |  | Spire Missouri Inc.
Date | November 14, 2025 |  | By | /s/ Timothy W. Krick
|  |  |  | Timothy W. Krick
|  |  |  | Controller and Chief Accounting Officer

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated.

Date |  | Signature |  | Title
November 14, 2025 |  | /s/ Scott E. Doyle |  | Chief Executive Officer and Chairman of the Board
|  | Scott E. Doyle |  | (Principal Executive Officer)
November 14, 2025 |  | /s/ Adam W. Woodard |  | Director
|  | Adam W. Woodard |  |
November 14, 2025 |  | /s/ Matthew J. Aplington |  | Director and General Counsel
|  | Matthew J. Aplington |  |
November 14, 2025 |  | /s/ Stephen M. Mills |  | Director and President
|  | Stephen M. Mills |  |

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Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

|  |  |  | Spire Alabama Inc.
Date | November 14, 2025 |  | By | /s/ Timothy W. Krick
|  |  |  | Timothy W. Krick
|  |  |  | Chief Accounting Officer

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated.

Date |  | Signature |  | Title
November 14, 2025 |  | /s/ Scott E. Doyle |  | Chief Executive Officer and Chairman of the Board
|  | Scott E. Doyle |  | (Principal Executive Officer)
November 14, 2025 |  | /s/ Adam W. Woodard |  | Director
|  | Adam W. Woodard |  |
November 14, 2025 |  | /s/ Matthew J. Aplington |  | Director and General Counsel
|  | Matthew J. Aplington |  |
November 14, 2025 |  | /s/ Joseph B. Hampton |  | Director and President
|  | Joseph B. Hampton |  |

119