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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, DC 20549

FORM 10-Q

(Mark One)

☒ | QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended June 30, 2023

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: 001-39394

Montrose Environmental Group, Inc.

(Exact Name of Registrant as Specified in its Charter)

Delaware | 46-4195044
( State or other jurisdiction of incorporation or organization) | (I.R.S. Employer Identification No.)
5120 Northshore Drive, North Little Rock, Arkansas | 72118
(Address of principal executive offices) | (Zip Code)

Registrant’s telephone number, including area code: (501) 900-6400

Securities registered pursuant to Section 12(b) of the Act:

Title of each class |  | Trading Symbol(s) |  | Name of each exchange on which registered
Common Stock, par value $0.000004 per share |  | MEG |  | The New York Stock Exchange

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 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. Yes ☒ No ☐

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). Yes ☒ No ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, 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 |  | ☐ |  |  |  |

If an emerging growth company, indicate by check mark if the 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. ☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes ☐ No ☒

As of August 3, 2023, the registrant had 30,154,844 s hares of common stock, $0.000004 par value per share, outstanding.

Table of Contents

|  | Page
PART I. | FINANCIAL INFORMATION |
Item 1. | Financial Statements | 1
| Unaudited Condensed Consolidated Statements of Financial Position | 1
| Unaudited Condensed Consolidated Statements of Operations and Comprehensive Loss | 2
| Unaudited Condensed Consolidated Statements of Convertible and Redeemable Series A-2 Preferred Stock and Stockholders’ Equity | 3
| Unaudited Condensed Consolidated Statements of Cash Flows | 4
| Notes to Unaudited Condensed Consolidated Financial Statements | 5
Item 2. | Management’s Discussion and Analysis of Financial Condition and Results of Operations | 36
Item 3. | Quantitative and Qualitative Disclosures About Market Risk | 51
Item 4. | Controls and Procedures | 51
PART II. | OTHER INFORMATION |
Item 1. | Legal Proceedings | 52
Item 1A. | Risk Factors | 52
Item 2. | Unregistered Sales of Equity Securities and Use of Proceeds | 52
Item 3. | Defaults Upon Senior Securities | 52
Item 4. | Mine Safety Disclosures | 52
Item 5. | Other Information | 52
Item 6. | Exhibits | 53
Signatures | 54

i

PART I—FINANCI AL INFORMATION

Item 1. Financi al Statements.

MONTROSE ENVIRONMENTAL GROUP, INC.

UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF FINANCIAL POSITION

(In thousands, except share data)

|  | June 30, |  |  | December 31, |
|  | 2023 |  |  | 2022 |
ASSETS |  |  |  |  |  |
CURRENT ASSETS: |  |  |  |  |  |
Cash, cash equivalents and restricted cash |  | $ | 23,307 |  |  | $ | 89,828 |
Accounts receivable—net |  |  | 103,720 |  |  |  | 94,711 |
Contract assets |  |  | 57,114 |  |  |  | 52,403 |
Prepaid and other current assets |  |  | 16,469 |  |  |  | 10,986 |
Total current assets |  |  | 200,610 |  |  |  | 247,928 |
NON-CURRENT ASSETS: |  |  |  |  |  |
Property and equipment—net |  |  | 57,106 |  |  |  | 36,045 |
Operating lease right-of-use asset—net |  |  | 44,040 |  |  |  | 26,038 |
Finance lease right-of-use asset—net |  |  | 11,488 |  |  |  | 9,840 |
Goodwill |  |  | 368,563 |  |  |  | 323,868 |
Other intangible assets—net |  |  | 137,369 |  |  |  | 142,107 |
Other assets |  |  | 6,489 |  |  |  | 6,088 |
TOTAL ASSETS |  | $ | 825,665 |  |  | $ | 791,914 |
LIABILITIES, CONVERTIBLE AND REDEEMABLE SERIES A-2 PREFERRED STOCK AND STOCKHOLDERS’ EQUITY |  |  |  |  |  |
CURRENT LIABILITIES: |  |  |  |  |  |
Accounts payable and other accrued liabilities |  | $ | 66,430 |  |  | $ | 63,412 |
Accrued payroll and benefits |  |  | 25,607 |  |  |  | 20,528 |
Business acquisitions contingent consideration, current |  |  | 4,119 |  |  |  | 3,801 |
Current portion of operating lease liabilities |  |  | 11,271 |  |  |  | 7,895 |
Current portion of finance lease liabilities |  |  | 4,014 |  |  |  | 3,775 |
Current portion of long-term debt |  |  | 13,149 |  |  |  | 12,031 |
Total current liabilities |  |  | 124,590 |  |  |  | 111,442 |
NON-CURRENT LIABILITIES: |  |  |  |  |  |
Business acquisitions contingent consideration, long-term |  |  | 2,311 |  |  |  | 4,454 |
Other non-current liabilities |  |  | 120 |  |  |  | 13 |
Deferred tax liabilities—net |  |  | 7,446 |  |  |  | 5,742 |
Conversion option |  |  | 27,155 |  |  |  | 25,731 |
Operating lease liability—net of current portion |  |  | 34,754 |  |  |  | 19,437 |
Finance lease liability—net of current portion |  |  | 7,379 |  |  |  | 6,486 |
Long-term debt—net of deferred financing fees |  |  | 155,976 |  |  |  | 152,494 |
Total liabilities |  | $ | 359,731 |  |  | $ | 325,799 |
COMMITMENTS AND CONTINGENCIES |  |  |  |  |  |
CONVERTIBLE AND REDEEMABLE SERIES A-2 PREFERRED STOCK $0.0001 PAR VALUE— |  |  |  |  |  |
Authorized, issued and outstanding shares: 17,500 at June 30, 2023 and December 31, 2022; aggregate liquidation preference of $182.2 million at June 30, 2023 and December 31, 2022 |  |  | 152,928 |  |  |  | 152,928 |
STOCKHOLDERS’ EQUITY: |  |  |  |  |  |
Common stock, $0.000004 par value; authorized shares: 190,000,000 at June 30, 2023 and December 31, 2022; issued and outstanding shares: 30,091,479 and 29,746,793 at June 30, 2023 and December 31, 2022, respectively |  |  | — |  |  |  | — |
Additional paid-in-capital |  |  | 514,494 |  |  |  | 492,676 |
Accumulated deficit |  |  | (201,390 | ) |  |  | (179,497 | )
Accumulated other comprehensive (loss) income |  |  | (98 | ) |  |  | 8 |
Total stockholders’ equity |  |  | 313,006 |  |  |  | 313,187 |
TOTAL LIABILITIES, CONVERTIBLE AND REDEEMABLE SERIES A-2 PREFERRED STOCK AND STOCKHOLDERS’ EQUITY |  | $ | 825,665 |  |  | $ | 791,914 |

The accompanying notes are an integral part of these unaudited condensed consolidated financial statements.

1

MONTROSE ENVIRONMENTAL GROUP, INC.

UNAUDITED CONDENSED CONSOLIDATE D STATEMENTS OF OPERATIONS AND

COMPREHENSIVE LOSS

(In thousands, except per share data)

|  | Three Months Ended |  |  | Six Months Ended |
|  | June 30, |  |  | June 30, |
|  | 2023 |  |  | 2022 |  |  | 2023 |  |  | 2022 |
REVENUES |  | $ | 159,101 |  |  | $ | 139,910 |  |  | $ | 290,529 |  |  | $ | 274,590 |
COST OF REVENUES (exclusive of depreciation and amortization shown below) |  |  | 98,196 |  |  |  | 90,429 |  |  |  | 179,829 |  |  |  | 178,815 |
SELLING, GENERAL AND ADMINISTRATIVE EXPENSE |  |  | 55,247 |  |  |  | 46,456 |  |  |  | 104,860 |  |  |  | 88,263 |
FAIR VALUE CHANGES IN BUSINESS ACQUISITION CONTINGENCIES |  |  | 353 |  |  |  | (3,510 | ) |  |  | (45 | ) |  |  | (3,531 | )
DEPRECIATION AND AMORTIZATION |  |  | 11,398 |  |  |  | 12,280 |  |  |  | 21,953 |  |  |  | 24,424 |
LOSS FROM OPERATIONS |  |  | (6,093 | ) |  |  | (5,745 | ) |  |  | (16,068 | ) |  |  | (13,381 | )
OTHER (EXPENSE) INCOME |  |  |  |  |  |  |  |  |  |  |  |
Other income (expense)—net |  |  | 947 |  |  |  | 343 |  |  |  | (889 | ) |  |  | 2,804 |
Interest expense—net |  |  | (1,877 | ) |  |  | (1,518 | ) |  |  | (3,418 | ) |  |  | (2,610 | )
Total other (expense) income—net |  |  | (930 | ) |  |  | (1,175 | ) |  |  | (4,307 | ) |  |  | 194 |
LOSS BEFORE EXPENSE FROM INCOME TAXES |  |  | (7,023 | ) |  |  | (6,920 | ) |  |  | (20,375 | ) |  |  | (13,187 | )
INCOME TAX EXPENSE |  |  | 151 |  |  |  | 831 |  |  |  | 1,518 |  |  |  | 2,100 |
NET LOSS |  | $ | (7,174 | ) |  | $ | (7,751 | ) |  | $ | (21,893 | ) |  | $ | (15,287 | )
EQUITY ADJUSTMENT FROM FOREIGN CURRENCY TRANSLATION |  |  | (118 | ) |  |  | (84 | ) |  |  | (106 | ) |  |  | (3 | )
COMPREHENSIVE LOSS |  |  | (7,292 | ) |  |  | (7,835 | ) |  |  | (21,999 | ) |  |  | (15,290 | )
CONVERTIBLE AND REDEEMABLE SERIES A-2 PREFERRED STOCK DIVIDEND |  |  | (4,100 | ) |  |  | (4,100 | ) |  |  | (8,200 | ) |  |  | (8,200 | )
NET LOSS ATTRIBUTABLE TO COMMON STOCKHOLDERS |  |  | (11,274 | ) |  |  | (11,851 | ) |  |  | (30,093 | ) |  |  | (23,487 | )
WEIGHTED AVERAGE COMMON SHARES OUTSTANDING— BASIC AND DILUTED |  |  | 30,047 |  |  |  | 29,678 |  |  |  | 29,952 |  |  |  | 29,670 |
NET LOSS PER SHARE ATTRIBUTABLE TO COMMON STOCKHOLDERS— BASIC AND DILUTED |  | $ | (0.38 | ) |  | $ | (0.40 | ) |  |  | (1.00 | ) |  | $ | (0.79 | )

The accompanying notes are an integral part of these unaudited condensed consolidated financial statements.

2

MONTROSE ENVIRONMENTAL GROUP, INC.

UNAUDITED COND ENSED CONSOLIDATED STATEMENTS OF CONVERTIBLE AND REDEEMABLE SERIES A-2 PREFERRED STOCK AND STOCKHOLDERS’ EQUITY

(In thousands, except share data)

|  | Convertible and Redeemable |  |  |  |  |  |  |  |  |  |  |  |  |
|  | Series A-2 Preferred Stock |  | Common Stock |  |  |  |  |  |  |  |  |
|  | Shares |  | Amount |  | Shares |  | Amount |  | Additional Paid-In Capital |  | Accumulated Deficit |  | Accumulated Other Comprehensive Income (Loss) |  | Total Stockholders' Equity |
BALANCE—December 31, 2021 |  |  | 17,500 |  | $ | 152,928 |  |  | 29,619,921 |  | $ | — |  | $ | 464,143 |  | $ | (147,678 | ) | $ | 36 |  | $ | 316,501 |
Net loss |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | (7,536 | ) |  | — |  |  | (7,536 | )
Stock-based compensation |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 10,425 |  |  | — |  |  | — |  |  | 10,425 |
Dividend payment to the Series A-2 preferred shareholders |  |  | — |  |  | — |  |  | — |  |  | — |  |  | (4,100 | ) |  | — |  |  | — |  |  | (4,100 | )
Common stock issued |  |  | — |  |  | — |  |  | 55,896 |  |  | — |  |  | 429 |  |  | — |  |  | — |  |  | 429 |
Accumulated other comprehensive income |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 45 |  |  | 45 |
BALANCE—March 31, 2022 |  |  | 17,500 |  | $ | 152,928 |  |  | 29,675,817 |  | $ | — |  | $ | 470,897 |  | $ | (155,214 | ) | $ | 81 |  | $ | 315,764 |
Net loss |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | (7,751 | ) |  | — |  |  | (7,751 | )
Stock-based compensation |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 10,932 |  |  | — |  |  | — |  |  | 10,932 |
Dividend payment to the Series A-2 preferred shareholders |  |  | — |  |  | — |  |  | — |  |  | — |  |  | (4,100 | ) |  | — |  |  | — |  |  | (4,100 | )
Common stock issued |  |  | — |  |  | — |  |  | 3,575 |  |  | — |  |  | 54 |  |  | — |  |  | — |  |  | 54 |
Accumulated other comprehensive loss |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | (48 | ) |  | (48 | )
BALANCE—June 30, 2022 |  |  | 17,500 |  | $ | 152,928 |  |  | 29,679,392 |  | $ | — |  | $ | 477,783 |  | $ | (162,965 | ) | $ | 33 |  | $ | 314,851 |
BALANCE—December 31, 2022 |  |  | 17,500 |  | $ | 152,928 |  |  | 29,746,793 |  | $ | — |  | $ | 492,676 |  | $ | (179,497 | ) | $ | 8 |  | $ | 313,187 |
Net loss |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | (14,719 | ) |  | — |  |  | (14,719 | )
Stock-based compensation |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 13,035 |  |  | — |  |  | — |  |  | 13,035 |
Dividend payment to the Series A-2 preferred shareholders |  |  | — |  |  | — |  |  | — |  |  | — |  |  | (4,100 | ) |  | — |  |  | — |  |  | (4,100 | )
Common stock issued |  |  | — |  |  | — |  |  | 214,571 |  |  | — |  |  | 2,690 |  |  | — |  |  | — |  |  | 2,690 |
Accumulated other comprehensive income |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 12 |  |  | 12 |
BALANCE—March 31, 2023 |  |  | 17,500 |  | $ | 152,928 |  |  | 29,961,364 |  | $ | — |  | $ | 504,301 |  | $ | (194,216 | ) | $ | 20 |  | $ | 310,105 |
Net loss |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | (7,174 | ) |  | — |  |  | (7,174 | )
Stock-based compensation |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 11,090 |  |  | — |  |  | — |  |  | 11,090 |
Dividend payment to the Series A-2 preferred shareholders |  |  | — |  |  | — |  |  | — |  |  | — |  |  | (4,100 | ) |  | — |  |  | — |  |  | (4,100 | )
Common stock issued |  |  | — |  |  | — |  |  | 130,115 |  |  | — |  |  | 3,203 |  |  | — |  |  | — |  |  | 3,203 |
Accumulated other comprehensive loss |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | (118 | ) |  | (118 | )
BALANCE—June 30, 2023 |  |  | 17,500 |  | $ | 152,928 |  |  | 30,091,479 |  | $ | — |  | $ | 514,494 |  | $ | (201,390 | ) | $ | (98 | ) | $ | 313,006 |

The accompanying notes are an integral part of these unaudited condensed consolidated financial statements.

3

MONTROSE ENVIRONMENTAL GROUP, INC.

UNAUD ITED CONDENSED CONSOLIDA TED STATEMENTS OF CASH FLOWS

(In thousands)

|  | Six Months Ended June 30, |
|  | 2023 |  |  | 2022 |
OPERATING ACTIVITIES: |  |  |  |  |  |
Net loss |  | $ | (21,893 | ) |  | $ | (15,287 | )
Adjustments to reconcile net loss to net cash provided by (used in) operating activities: |  |  |  |  |  |
Provision (recovery) for bad debt |  |  | 1,824 |  |  |  | (171 | )
Depreciation and amortization |  |  | 21,953 |  |  |  | 24,424 |
Amortization of right-of-use asset |  |  | 5,041 |  |  |  | 4,582 |
Stock-based compensation expense |  |  | 24,125 |  |  |  | 21,357 |
Fair value changes in financial instruments |  |  | 1,008 |  |  |  | (2,856 | )
Fair value changes in business acquisition contingencies |  |  | (45 | ) |  |  | (3,531 | )
Deferred income taxes |  |  | 1,518 |  |  |  | 2,100 |
Other |  |  | 1,134 |  |  |  | 370 |
Changes in operating assets and liabilities—net of acquisitions: |  |  |  |  |  |
Accounts receivable and contract assets |  |  | 2,078 |  |  |  | 8,248 |
Prepaid expenses and other current assets |  |  | (1,673 | ) |  |  | (433 | )
Accounts payable and other accrued liabilities |  |  | (5,553 | ) |  |  | (10,171 | )
Accrued payroll and benefits |  |  | 411 |  |  |  | (7,794 | )
Payment of contingent consideration |  |  | (611 | ) |  |  | (19,457 | )
Change in operating leases |  |  | (4,805 | ) |  |  | (4,323 | )
Net cash provided by (used in) operating activities |  |  | 24,512 |  |  |  | (2,942 | )
INVESTING ACTIVITIES: |  |  |  |  |  |
Purchases of property and equipment |  |  | (20,951 | ) |  |  | (3,501 | )
Proprietary software development and other software costs |  |  | (2,041 | ) |  |  | (147 | )
Proceeds from insurance |  |  | 86 |  |  |  | 277 |
Payment of purchase price true ups |  |  | (1,027 | ) |  |  | (631 | )
Cash paid for acquisitions—net of cash acquired |  |  | (63,050 | ) |  |  | (14,328 | )
Net cash used in investing activities |  |  | (86,983 | ) |  |  | (18,330 | )
FINANCING ACTIVITIES: |  |  |  |  |  |
Proceeds from the aircraft loan |  |  | 10,935 |  |  |  | — |
Repayment of term loan |  |  | (6,597 | ) |  |  | (6,563 | )
Payment of contingent consideration |  |  | (1,194 | ) |  |  | (10,722 | )
Repayment of finance leases |  |  | (2,198 | ) |  |  | (1,911 | )
Proceeds from issuance of common stock for exercised stock options |  |  | 3,295 |  |  |  | 483 |
Dividend payment to the Series A-2 shareholders |  |  | (8,200 | ) |  |  | (8,200 | )
Payments of deferred offering costs |  |  | — |  |  |  | (183 | )
Net cash used in financing activities |  |  | (3,959 | ) |  |  | (27,096 | )
CHANGE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH |  |  | (66,430 | ) |  |  | (48,368 | )
Foreign exchange impact on cash balance |  |  | (91 | ) |  |  | 41 |
CASH, CASH EQUIVALENTS AND RESTRICTED CASH: |  |  |  |  |  |
Beginning of year |  |  | 89,828 |  |  |  | 146,741 |
End of period |  | $ | 23,307 |  |  | $ | 98,414 |
SUPPLEMENTAL DISCLOSURES OF CASH FLOWS INFORMATION: |  |  |  |  |  |
Cash paid for interest |  | $ | 2,937 |  |  | $ | 3,196 |
Cash paid for income tax |  | $ | 1,261 |  |  | $ | 699 |
SUPPLEMENTAL DISCLOSURES OF NON-CASH INVESTING AND FINANCING ACTIVITIES: |  |  |  |  |  |
Accrued purchases of property and equipment |  | $ | 2,304 |  |  | $ | 1,408 |
Property and equipment purchased under finance leases |  | $ | 3,326 |  |  | $ | 1,273 |
Common stock issued to acquire new businesses |  | $ | 2,598 |  |  | $ | — |
Acquisitions unpaid contingent consideration |  | $ | 6,430 |  |  | $ | 6,374 |

The accompanying notes are an integral part of these unaudited condensed consolidated financial statements.

MONTROSE ENVIRONMENTAL GROUP, INC.

NOTES TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(In thousands, except where otherwise indicated)

1. DESCRIPTION OF THE BUSINESS AND BASIS OF PRESENTATION

Description of the Business— Montrose Environmental Group, Inc. (“Montrose” or the “Company”) is a corporation formed on November 2013, under the laws of the State of Delaware. The Company has approximately 100 offices across the United States, Canada, Australia and Europe and approximately 3,600 employees as of June 30, 2023.

Montrose is an environmental services company serving the recurring environmental needs of a diverse client base, including Fortune 500 companies and federal, state and local governments through the following three segments:

Assessment, Permitting and Response—Through its Assessment, Permitting and Response segment, Montrose primarily provides scientific advisory and consulting services to support environmental assessments, environmental emergency response, and environmental audits and permits for current operations, facility upgrades, new projects, decommissioning projects and development projects. The Company’s technical advisory and consulting offerings include regulatory compliance support and planning, environmental, ecosystem and toxicological assessments and support during responses to environmental disruption. Montrose helps clients navigate regulations at the local, state, provincial and federal levels.

Measurement and Analysis—Through its Measurement and Analysis segment, Montrose’s teams test and analyze air, water and soil to determine concentrations of contaminants, as well as the toxicological impact of contaminants on flora, fauna and human health. Montrose’s offerings include source and ambient air testing and monitoring, leak detection and repair and advanced analytical laboratory services such as air, storm water, wastewater and drinking water analysis.

Remediation and Reuse—Through its Remediation and Reuse segment, Montrose provides clients with engineering, design, and implementation services, primarily to treat contaminated water, remove contaminants from soil or create biogas from waste. The Company does not own the properties or facilities at which it implements these projects or the underlying liabilities, nor does it own material amounts of the equipment used in projects; instead, the Company assists clients in designing solutions, managing projects and mitigating their environmental risks and liabilities at their locations.

Basis of Presentation—The unaudited condensed consolidated financial statements include the operations of the Company and its wholly-owned subsidiaries. These unaudited condensed consolidated financial statements are presented in conformity with accounting principles generally accepted in the United States (“U.S. GAAP”) and have been prepared pursuant to the rules and regulations of the U.S. Securities and Exchange Commission (“SEC”) that permit reduced disclosure for interim periods. The unaudited condensed consolidated financial statements include all accounts of the Company and, in the opinion of management, include all recurring adjustments and normal accruals necessary for a fair statement of the Company’s financial position, results of operations and cash flows for the dates and periods presented. These unaudited condensed consolidated financial statements should be read in conjunction with the Company’s audited financial statements as of and for the year ended December 31, 2022. Results for interim periods are not necessarily indicative of the results to be expected during the remainder of the current year or for any future period. All intercompany transactions, accounts and profits, have been eliminated in the unaudited condensed consolidated financial statements.

5

2. SUMMARY OF NEW ACCOUNTING PRONOUNCEMENTS

Recently Adopted Accounting Pronouncements—In October 2021, the Financial Accounting Standards Board ("FASB") issued Accounting Standard Update ("ASU") No. 2021-08, Business Combinations (Topic 805): Accounting for Contract Assets and Contract Liabilities from Contracts with Customers. Under the new guidance (ASC 805-20-30-28), the acquirer should determine what contract assets and/or contract liabilities it would have recorded under ASC 606 (the revenue guidance) as of the acquisition date, as if the acquirer had entered into the original contract at the same date and on the same terms as the acquiree. The new guidance was adopted as of January 1, 2023 and did not have a material impact on the Company’s unaudited condensed consolidated financial statements; however it may impact the accounting for future acquisitions. The future impact of this new guidance will be primarily a function of the facts and circumstances specific to any acquisitions consummated after adoption and therefore cannot be predicted.

In March 2020, the FASB issued ASU 2020-04, Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting. ASU 2020-04 provides optional expedients and exceptions for applying U.S. GAAP to contracts, hedging relationships and other transactions affected by the expected transition away from reference rates that are expected to be discontinued, such as London Interbank Offered Rate (“LIBOR”). In May 2023, the Company adopted the guidance when it amended certain of its agreements to transition from LIBOR to a Secured Overnight Financing Rate (“SOFR”) (Note 12). The adoption of this guidance did not have a material impact on the Company’s unaudited condensed consolidated financial statements.

6

3. REVENUES AND ACCOUNTS RECEIVABLE

The Company’s main revenue sources derive from the following revenue streams:

Assessment, Permitting and Response Revenues—Assessment, Permitting and Response revenues are generated from multidisciplinary environmental consulting services. The majority of the contracts are fixed-price or time and material based.

Measurement and Analysis Revenues—Measurement and Analysis revenues are generated from emissions sampling, testing and reporting services, leak detection services, ambient air monitoring services and laboratory testing services. The majority of the contracts are fixed-price or time-and-materials based.

Remediation and Reuse Revenues—Remediation and Reuse revenues are generated from engineering, design, implementation and operating and maintenance (“O&M”) services primarily to treat contaminated water, remove contaminants from soil or create biogas from waste. Engineering, design and implementation contracts are predominantly fixed-fee and time-and-materials based. Services on the majority of O&M contracts are provided under long-term fixed-fee contracts.

Disaggregation of Revenue—The Company disaggregates revenue by its operating segments. The Company believes disaggregating revenue into these categories achieves the disclosure objectives to depict how the nature, amount, and uncertainty of revenue and cash flows are affected by economic factors. Disaggregated revenue disclosures are provided in Note 18.

Contract Balances—The Company presents contract balances for unbilled receivables (contract assets), as well as customer advances, deposits and deferred revenue (contract liabilities) within contract assets and accounts payable and other accrued expenses, respectively, on the unaudited condensed consolidated statements of financial position. Amounts are generally billed at periodic intervals (e.g. weekly, bi-weekly or monthly) as work progresses in accordance with agreed-upon contractual terms. The Company utilizes the practical expedient to not adjust the promised amount of consideration for the effects of a significant financing component as the period between when the Company transfers services to a customer and when the customer pays for those services is one year or less. Amounts recorded as unbilled receivables are generally for services the Company is not entitled to bill based on the passage of time. Under certain contracts, billing occurs subsequent to revenue recognition, resulting in contract assets. The Company sometimes receives advances or deposits from customers before revenue is recognized, resulting in contract liabilities.

The following table presents the Company’s contract balances:

|  | June 30, |  |  | December 31, |
|  | 2023 |  |  | 2022 |
Contract assets |  | $ | 57,114 |  |  | $ | 52,403 |
Contract liabilities |  |  | 11,333 |  |  |  | 18,549 |

Contract assets acquired through business acquisitions amounted to $2.2 million and $1.7 million as of June 30, 2023 and December 31, 2022, respectively. No material contract liabilities were acquired through business acquisitions as of June 30, 2023 and December 31, 2022.

Revenue recognized during the three and six months ended June 30, 2023, included in the contract liabilities balance at the beginning of the year was $0.5 million and $13.3 million, respectively. The revenue recognized from the contract liabilities consisted of the Company satisfying performance obligations during the normal course of business.

Remaining Unsatisfied Performance Obligations—Remaining unsatisfied performance obligations represent the total dollar value of work to be performed on contracts awarded and in progress. The amount of remaining unsatisfied performance obligations increases with new contracts or additions to existing contracts and decreases as revenue is recognized on existing contracts. Contracts are included in the amount of remaining unsatisfied performance obligations when an enforceable agreement has been reached. As of June 30, 2023 and December 31, 2022, the estimated revenue expected to be recognized in the future related to performance obligations that are unsatisfied was approximately $82.3 million and $100.4 million, respectively. As of June 30, 2023, the Company expected to recognize approximately $64.8 million of this amount as revenue within a year and $17.5 million the year after.

7

Accounts Receivable, Net—Th e Company extends non-interest-bearing trade credit to its customers in the ordinary course of business. Accounts receivable, net consisted of the following:

|  | June 30, 2023 |  |  | December 31, 2022 |
Accounts receivable, invoiced |  | $ | 106,245 |  |  | $ | 95,055 |
Accounts receivable, other |  |  | 981 |  |  |  | 1,571 |
Allowance for doubtful accounts |  |  | (3,506 | ) |  |  | (1,915 | )
Accounts receivable—net |  | $ | 103,720 |  |  | $ | 94,711 |

The Company did not have any customers that exceeded 10.0% of its gross receivables as of June 30, 2023 and December 31, 2022. During the three and six months ended June 30, 2023 the Company had one customer who accounted for 12.3% and 10.4% of revenue, respectively. For the three and six months ended June 30, 2022, the Company had one customer who accounted for 16.1% and 16.7% of revenue, respectively. The Company performs ongoing credit evaluations and based on past collection experience, the Company believes that the receivable balances from these largest customers do not represent a significant credit risk.

The allowance for doubtful accounts consisted of the following:

|  | Beginning Balance |  |  | Bad Debt Expense (Recovery) |  |  | Charged to Allowance |  |  | Other(1) |  |  | Ending Balance |
Six months ended June 30, 2023 |  | $ | 1,915 |  |  | $ | 1,824 |  |  | $ | (233 | ) |  | $ | — |  |  | $ | 3,506 |
Year ended December 31, 2022 |  |  | 4,581 |  |  |  | (1,097 | ) |  |  | (1,696 | ) |  |  | 127 |  |  |  | 1,915 |

____________________

(1)
This amount consists of additions to the allowance due to business acquisitions.

4. PREPAID AND OTHER CURRENT ASSETS

Prepaid and other current assets consisted of the following:

|  | June 30, |  |  | December 31, |
|  | 2023 |  |  | 2022 |
Deposits |  | $ | 1,614 |  |  | $ | 1,394 |
Prepaid expenses |  |  | 8,298 |  |  |  | 5,266 |
Supplies |  |  | 4,889 |  |  |  | 3,632 |
Income tax receivable |  |  | 1,668 |  |  |  | 694 |
Prepaid and other current assets |  | $ | 16,469 |  |  | $ | 10,986 |

8

5. PROPERTY AND EQUIPMENT, NET

Property and equipment are stated at cost or estimated fair value for assets acquired through business combinations. Depreciation and amortization are provided using the straight-line method over the estimated useful lives of the assets. Leasehold improvements are amortized using the straight-line method over the shorter of the remaining lease term, including options that are deemed to be reasonably assured, or the estimated useful life of the improvement.

Property and equipment, net, consisted of the following:

|  | Estimated |  | June 30, |  |  | December 31, |
|  | Useful Life |  | 2023 |  |  | 2022 |
Lab and test equipment |  | 7 years |  | $ | 24,096 |  |  | $ | 21,171 |
Vehicles |  | 5 years |  |  | 5,842 |  |  |  | 5,732 |
Equipment |  | 3-7 years |  |  | 48,059 |  |  |  | 40,940 |
Furniture and fixtures |  | 7 years |  |  | 3,206 |  |  |  | 2,841 |
Leasehold improvements |  | 7 years |  |  | 9,425 |  |  |  | 8,576 |
Aircraft |  | 10-20 years |  |  | 12,212 |  |  |  | 931 |
Building |  | 39 years |  |  | 6,112 |  |  |  | 2,975 |
|  |  |  |  | 108,952 |  |  |  | 83,166 |
Land |  |  |  |  | 725 |  |  |  | 725 |
Construction in progress |  |  |  |  | 2,566 |  |  |  | 3,150 |
Less accumulated depreciation |  |  |  |  | (55,137 | ) |  |  | (50,996 | )
Total property and equipment— net |  |  |  | $ | 57,106 |  |  | $ | 36,045 |

Total depreciation expense included in the unaudited condensed consolidated statements of operations was $2.6 million and $4.8 million for the three and six months ended June 30, 2023, respectively, and $1.8 million and $3.6 million for the three and six months ended June 30, 2022, respectively.

9

6. LEASES

Leases are classified as either finance leases or operating leases based on criteria in ASC 842. The Company has finance leases for its vehicle and equipment leases and operating leases for its real estate space and office equipment leases. The Company’s operating and finance leases generally have original lease terms between 1 year and 15 years, an d in some instances include one or more options to renew. The Company includes options to extend the lease term if the options are reasonably certain of being exercised. The Company currently considers some of its renewal options to be reasonably certain to be exercised. Some leases also include early termination options, which can be exercised under specific conditions. The Company does not have material residual value guarantees or restrictive covenants associated with its leases.

Finance and operating lease assets represent the right to use an underlying asset for the lease term, and finance and operating lease liabilities represent the obligation to make lease payments arising from the lease.

The Company calculates the present value of its finance and operating leases using an estimated incremental borrowing rate (“IBR”), which requires judgment. For real estate operating leases, the Company estimates the IBR based on prevailing market rates for collateralized debt in a similar economic environment with similar payment terms and maturity dates commensurate with the terms of the lease. For all other leases, the Company estimates the IBR based on the stated interest rate on the contract. Since many of the inputs used to calculate the rate implicit in the leases are not readily determinable from the lessee’s perspective, the Company does not use the implicit interest rate.

Certain leases contain variable payments, these payments are expensed as incurred and not included in the Company’s operating lease right-of-use assets and operating lease liabilities. These amounts primarily include payments for maintenance, utilities, taxes, and insurance and are excluded from the present value of the Company’s lease obligations.

The Company does not record operating lease right-of-use assets or operating lease liabilities for leases with an initial term of 12 months or less. The Company also combines lease and non-lease components on all new or modified operating leases into a single lease component for all classes of assets.

The components of lease expense were as follows:

|  | For the Three Months Ended June 30, |
| Statement of Operations Location | 2023 |  |  | 2022 |
Operating lease cost |  |  |  |  |  |
Lease cost | Selling, general and administrative expense | $ | 2,804 |  |  | $ | 2,500 |
Variable lease cost | Selling, general and administrative expense |  | 299 |  |  |  | 190 |
Total operating lease cost |  |  | 3,103 |  |  |  | 2,690 |
Finance lease cost |  |  |  |  |  |
Amortization of right of use assets | Depreciation and amortization |  | 1,429 |  |  |  | 1,012 |
Interest on lease liabilities | Interest expense—net |  | 171 |  |  |  | 108 |
Total finance lease cost |  |  | 1,600 |  |  |  | 1,120 |
Total lease cost |  | $ | 4,703 |  |  | $ | 3,810 |
|  | For the Six Months Ended June 30, |
| Statement of Operations Location | 2023 |  |  | 2022 |
Operating lease cost |  |  |  |  |  |
Lease cost | Selling, general and administrative expense | $ | 5,545 |  |  | $ | 4,951 |
Variable lease cost | Selling, general and administrative expense |  | 625 |  |  |  | 557 |
Total operating lease cost |  |  | 6,170 |  |  |  | 5,508 |
Finance lease cost |  |  |  |  |  |
Amortization of right of use assets | Depreciation and amortization |  | 2,583 |  |  |  | 1,951 |
Interest on lease liabilities | Interest expense—net |  | 301 |  |  |  | 220 |
Total finance lease cost |  |  | 2,884 |  |  |  | 2,171 |
Total lease cost |  | $ | 9,054 |  |  | $ | 7,679 |

10

Supplemental cash flows information related to leases was as follows:

|  | For the Six Months Ended June 30, |
|  | 2023 |  |  | 2022 |
Cash paid for amounts included in the measurement of lease liabilities: |  |  |  |  |  |
Operating cash flows used in operating leases |  | $ | 5,306 |  |  | $ | 4,741 |
Operating cash flows used in finance leases |  |  | 301 |  |  |  | 220 |
Financing cash flows used in finance leases |  |  | 2,198 |  |  |  | 1,911 |
Lease liabilities arising from new ROU assets: |  |  |  |  |  |
Operating leases |  |  | 23,831 |  |  |  | 10,478 |
Finance leases |  |  | 3,326 |  |  |  | 1,273 |

Weighted average remaining lease terms and weighted average discount rates were:

|  | June 30, 2023 |
|  | Operating Leases |  |  | Finance Leases |
Weighted average remaining lease term (years) |  | 5.49 |  |  |  | 3.33 |
Weighted average discount rate |  | 2.80% |  |  | 5.76% |
|  | June 30, 2022 |
|  | Operating Leases |  |  | Finance Leases |
Weighted average remaining lease term (years) |  | 4.68 |  |  |  | 3.00 |
Weighted average discount rate |  |  | 2.53 | % |  |  | 4.85 | %

The following is a schedule by year of the maturities of lease liabilities with original terms in excess of one year:

|  | Operating Leases |  |  | Finance Leases |
Remainder of 2023 |  | $ | 6,239 |  |  | $ | 2,530 |
2024 |  |  | 11,546 |  |  |  | 3,824 |
2025 |  |  | 8,960 |  |  |  | 2,865 |
2026 |  |  | 7,028 |  |  |  | 2,134 |
2027 |  |  | 4,867 |  |  |  | 1,058 |
2028 and thereafter |  |  | 10,322 |  |  |  | 146 |
Total undiscounted future minimum lease payments |  |  | 48,962 |  |  |  | 12,557 |
Less imputed interest |  |  | (2,937 | ) |  |  | (1,164 | )
Total discounted future minimum lease payments |  | $ | 46,025 |  |  | $ | 11,393 |

11

7. BUSINESS ACQUISITIONS

In line with the Company’s strategic growth initiatives, the Company acquired certain businesses during the six months ended June 30, 2023 and during the year ended December 31, 2022. The results of each of those acquired businesses are included in the unaudited condensed consolidated financial statements beginning on the acquisition date. Each transaction qualified as an acquisition of a business and was accounted for as a business combination. All acquisitions resulted in the recognition of goodwill. The Company paid these premiums resulting in such goodwill for a number of reasons, including expected synergies from combining operations of the acquiree and the Company while also growing the Company’s customer base, acquiring assembled workforces, expanding its presence in certain markets and expanding and advancing its product and service offerings. The Company recorded the assets acquired and liabilities assumed at their acquisition date fair value, with the difference between the fair value of the net assets acquired and the acquisition consideration reflected as goodwill.

The identifiable intangible assets for significant acquisitions are valued using the excess earnings method discounted cash flow approach for customer relationships, the relief from royalty method for trade names, the patent and external proprietary software and developed technology, the “with and without” method for covenants not to compete and the replacement cost method for the internal proprietary software by incorporating Level 3 inputs as described under the fair value hierarchy of ASC 820. These unobservable inputs reflect the Company’s own assumptions about which assumptions market participants would use in pricing an asset on a non-recurring basis. These assets will be amortized over their respective estimated useful lives.

Other purchase price obligations (primarily deferred purchase price liabilities and target working capital liabilities or receivables) are included on the unaudited condensed consolidated statements of financial position in accounts payable and other accrued liabilities, other non-current liabilities or accounts receivable-net in the case of working capital deficits. Contingent consideration outstanding from acquisitions are included on the unaudited condensed consolidated statements of financial position in business acquisition contingent consideration, current or in business acquisitions contingent consideration, long-term. The contingent consideration elements of the purchase price of the acquisitions are related to earn-outs which are based on the expected achievement of revenue or earnings thresholds as of the date of the acquisition and for which the maximum potential amount is limited.

The Company considers several factors when determining whether or not contingent consideration liabilities are part of the purchase price, including the following: (i) the valuation of its acquisitions is not supported solely by the initial consideration paid, (ii) the former stockholders of acquired companies that remain as key employees receive compensation other than contingent consideration payments at a reasonable level compared with the compensation of the Company’s other key employees and (iii) contingent consideration payments are not affected by employment termination. The Company reviews and assesses the estimated fair value of contingent consideration at each reporting period.

The Company may be required to make up to $7.7 million in aggregate earn-out payments between the years 2023 and 2026 in connection with certain of its business acquisitions, of which up to $0.8 million may be paid only in cash, up to $5.5 million may be paid only in common stock and up to $1.5 million may be paid, at the Company’s option, in cash or common stock.

Transaction costs related to business combinations totaled $2.7 million and $3.5 million for the three and six months ended June 30, 2023, respectively, and $0.5 million and $1.0 million for the three and six months ended June 30, 2022, respectively. These costs are expensed within selling, general and administrative expense in the accompanying unaudited condensed consolidated statements of operations.

12

Acquisitions Completed During the Six Months Ended June 30, 2023

Frontier Analytical Laboratories (“Frontier”) —In January 2023, the Company completed the acquisition of Frontier by acquiring certain of its assets and operations. Frontier is a specialized environmental laboratory based in El Dorado Hills, CA.

Environmental Alliance, Inc. (“EAI”)—In February 2023, the Company completed the acquisition of EAI by acquiring 100.0% of its common stock. EAI provides environmental remediation and consulting services, and is based in Wilmington, DE.

GreenPath Energy LTD (“GreenPath”) —In May 2023, the Company completed the acquisition of GreenPath by acquiring 100.0% of its common stock. GreenPath is a leading optical gas imaging and fugitive emissions management services firm and is based in Calgary, Canada.

Matrix Solutions, Inc. ("Matrix") —In June 2023, the Company completed the acquisition of Matrix by acquiring 100.0% of its common stock. Matrix is one of Canada’s leading environmental and engineering consulting companies and is based in Calgary, Canada.

The following table summarizes the elements of the purchase price of the acquisitions completed during the six months ended June 30, 2023:

|  | Cash |  |  | Common Stock |  |  | Other Purchase Price Components |  |  | Contingent Consideration |  |  | Total Purchase Price |
Matrix |  | $ | 46,563 |  |  | $ | — |  |  | $ | 2,019 |  | (1) | $ | — |  |  | $ | 48,582 |
All other 2023 acquisitions |  |  | 18,774 |  |  |  | 2,598 |  |  |  | 111 |  |  |  | 25 |  |  |  | 21,508 |
Total |  | $ | 65,337 |  |  | $ | 2,598 |  |  | $ | 2,130 |  |  | $ | 25 |  |  | $ | 70,090 |

____________________

(1)
Includes $1.3 million in holdback amounts payable to the seller. Cash funds to be used for payment have been classified as restricted cash in the Company's unaudited condensed consolidated statement of financial position.

The upfront cash payment made to acquire the acquisitions completed during the six months ended June 30, 2023 was funded through cash on hand. The other purchase price components mainly consist of deferred purchase price liabilities and surplus working capital amounts.

The preliminary purchase price attributable to the acquisitions was allocated as follows:

|  | Matrix(1) |  |  | All other 2023 acquisitions(1) |  |  | Total(1) |
Cash |  | $ | 1,524 |  |  | $ | 763 |  |  | $ | 2,287 |
Accounts receivable and contract assets |  |  | 15,752 |  |  |  | 3,119 |  |  |  | 18,871 |
Other current assets |  |  | 2,094 |  |  |  | 369 |  |  |  | 2,463 |
Current assets |  |  | 19,370 |  |  |  | 4,251 |  |  |  | 23,621 |
Property and equipment |  |  | 2,231 |  |  |  | 1,492 |  |  |  | 3,723 |
Operating lease right-of-use asset |  |  | 14,760 |  |  |  | 46 |  |  |  | 14,806 |
Customer relationships |  |  | — |  |  |  | 6,797 |  |  |  | 6,797 |
Trade names |  |  | — |  |  |  | 151 |  |  |  | 151 |
Covenants not to compete |  |  | — |  |  |  | 454 |  |  |  | 454 |
Other intangible assets |  |  | — |  |  |  | 444 |  |  |  | 444 |
Goodwill |  |  | 36,118 |  |  |  | 8,763 |  |  |  | 44,881 |
Total assets |  |  | 72,479 |  |  |  | 22,398 |  |  |  | 94,877 |
Current liabilities |  |  | 11,267 |  |  |  | 858 |  |  |  | 12,125 |
Operating lease liability—net of current portion |  |  | 12,500 |  |  |  | 32 |  |  |  | 12,532 |
Other non-current liabilities |  |  | 130 |  |  |  | — |  |  |  | 130 |
Total liabilities |  |  | 23,897 |  |  |  | 890 |  |  |  | 24,787 |
Purchase price |  | $ | 48,582 |  |  | $ | 21,508 |  |  | $ | 70,090 |

___________________________________

(1) The Company is continuing to obtain information to complete the valuation of certain of these acquisitions' assets and liabilities.

The weighted average useful lives for GreenPath's identifiable customer relationships, tradenames, covenants not to compete, and proprietary software are 12 years, 1 year, 5 years, and 5 years, respectively. The weighted average useful lives for all of the other acquisitions identifiable customer relationships, tradenames, and covenants not to compete are 7 years, 2 years, and 5 years, respectively.

Goodwill associated with the Frontier acquisition is deductible for income tax purposes.

13

Frontier and GreenPath are included in the Company’s Measurement and Analysis segment. EAI and Matrix are included in the Company’s Remediation and Reuse segment.

For the acquisitions completed during the six months ended June 30, 2023, the results of operations since the acquisition dates have been combined with those of the Company. The Company’s unaudited condensed consolidated statement of operations for the three and six months ended June 30, 2023 includes revenue of $10.6 million and $11.6 million, respectively, and pre-tax income of $0.8 million and $1.0 million, respectively, related to these acquisitions.

14

Acquisitions Completed During the Year Ended December 31, 2022

Environmental Standards, Inc. (“Environmental Standards”)—In January 2022, the Company completed the acquisition of Environmental Standards, Inc. by acquiring 100.0% of its common stock. Environmental Standards is a provider of environmental consulting and data validation services. Environmental Standards is based in Valley Forge, PA with satellite locations nationwide.

Industrial Automation Group, Inc. (“IAG”)—In January 2022, the Company completed the acquisition of Industrial Automation Group, Inc. by acquiring certain of its employees and a covenant not to compete. IAG is based in Atlanta, GA. IAG provides highly specialized engineering services which are additive to the Company’s water treatment and renewable energy technology implementations.

TriAD Environmental Consultants, Inc. (“TriAD”)—In August 2022, the Company completed the acquisition of TriAD Environmental Consultants, Inc. by acquiring 100.0% of its common stock. TriAD is a provider of environmental consulting services. TriAD is based in Nashville, TN.

AirKinetics, Inc. (“AirKinetics”)—In September 2022, the Company completed the acquisition of AirKinetics, Inc. by acquiring 100.0% of its common stock. AirKinetics is a provider of emissions testing services. AirKinetics is based in Anaheim, CA.

Huco Consulting, Inc. (“Huco”)—In November 2022, the Company completed the acquisition of Huco Consulting, Inc. by acquiring 100.0% of its common stock. Huco primarily specializes in the implementation of environment, health and safety software for industrial, commercial and government clients. Huco is based in Houston, TX.

Environmental Standards and Huco are included in the Company’s Assessment, Permitting and Response segment, IAG and TriAD are included in the Remediation and Reuse segment and AirKinetics is included in the Measurement and Analysis segment.

For the acquisitions comp leted during the six months ended June 30, 2022, the results of operations since the acquisition dates have been combined with those of the Company. The Company’s unaudited condensed consolidated statement of operations for the three and six months ended June 30, 2022 includes revenue of $4.3 million and $7.6 million, respectively, and pre-tax (loss) income of $(0.1) million and $0.7 million, respectively, related to these acquisitions.

During the six months ended June 30, 2023, measurement period adjustments of $0.2 million were recorded to goodwill as a result of the Company’s efforts to complete the valuation of certain acquired assets and assumed liabilities (Note 8).

Supplemental Unaudited Pro-Forma—The unaudited condensed consolidated financial information summarized in the following table gives effect to the 2023 and the 2022 acquisitions discussed above assuming they occurred on January 1, 2022. These unaudited consolidated pro-forma operating results do not assume any impact from revenue, cost or other operating synergies that are expected or may have been realized as a result of the acquisitions. These unaudited consolidated pro-forma operating results are presented for illustrative purposes only and are not indicative of the operating results that would have been achieved had the acquisitions occurred on January 1, 2022, nor does the information purport to reflect results for any future period.

|  | For the Three Months Ended June 30, |
|  | 2023 |  |  | 2022 |
|  | As reported |  |  | Acquisitions Pro-Forma (Unaudited) |  |  | Consolidated Pro-Forma (Unaudited) |  |  | As reported |  |  | Acquisitions Pro-Forma (Unaudited) |  |  | Consolidated Pro-Forma (Unaudited) |
Revenues |  | $ | 159,101 |  |  | $ | 9,851 |  |  | $ | 168,952 |  |  | $ | 139,910 |  |  | $ | 24,159 |  |  | $ | 164,069 |
Net (loss) income |  |  | (7,174 | ) |  |  | (225 | ) |  |  | (7,399 | ) |  |  | (7,751 | ) |  |  | 1,368 |  |  |  | (6,383 | )
|  | For the Six Months Ended June 30, |
|  | 2023 |  |  | 2022 |
|  | As reported |  |  | Acquisitions Pro-Forma (Unaudited) |  |  | Consolidated Pro-Forma (Unaudited) |  |  | As reported |  |  | Acquisitions Pro-Forma (Unaudited) |  |  | Consolidated Pro-Forma |
Revenues |  | $ | 290,529 |  |  | $ | 24,622 |  |  | $ | 315,151 |  |  | $ | 274,590 |  |  | $ | 42,910 |  |  | $ | 317,500 |
Net (loss) income |  |  | (21,893 | ) |  |  | 358 |  |  |  | (21,535 | ) |  |  | (15,287 | ) |  |  | 1,470 |  |  |  | (13,817 | )

15

8. GOODWILL AND INTANGIBLE ASSETS

Amounts related to goodwill are as follows:

|  | Assessment, Permitting and Response |  |  | Measurement and Analysis |  |  | Remediation and Reuse |  |  | Total |
Balance as of December 31, 2022 |  | $ | 185,116 |  |  | $ | 86,205 |  |  | $ | 52,547 |  |  | $ | 323,868 |
Goodwill acquired during the period |  |  | — |  |  |  | 7,146 |  |  |  | 37,735 |  |  |  | 44,881 |
Acquisitions measurement period adjustments |  |  | (170 | ) |  |  | (6 | ) |  |  | 12 |  |  |  | (164 | )
Foreign currency translation impact |  |  | — |  |  |  | — |  |  |  | (22 | ) |  |  | (22 | )
Balance as of June 30, 2023 |  | $ | 184,946 |  |  | $ | 93,345 |  |  | $ | 90,272 |  |  | $ | 368,563 |

Amounts related to finite-lived intangible assets are as follows:

June 30, 2023 |  | Estimated Useful Life |  | Gross Balance |  |  | Accumulated Amortization |  |  | Total Intangible Assets—Net |
Finite lived intangible assets |  |  |  |  |  |  |  |  |  |  |
Customer relationships |  | 2-15 years |  | $ | 214,821 |  |  | $ | 105,385 |  |  | $ | 109,436 |
Covenants not to compete |  | 4-5 years |  |  | 33,996 |  |  |  | 29,675 |  |  |  | 4,321 |
Trade names |  | 1-5 years |  |  | 22,213 |  |  |  | 19,371 |  |  |  | 2,842 |
Proprietary software |  | 3-5 years |  |  | 25,135 |  |  |  | 17,715 |  |  |  | 7,420 |
Patent |  | 16 years |  |  | 17,479 |  |  |  | 4,129 |  |  |  | 13,350 |
Total other intangible assets —net |  |  |  | $ | 313,644 |  |  | $ | 176,275 |  |  | $ | 137,369 |

December 31, 2022 |  | Estimated Useful Life |  | Gross Balance |  |  | Accumulated Amortization |  |  | Total Intangible Assets—Net |
Finite lived intangible assets |  |  |  |  |  |  |  |  |  |  |
Customer relationships |  | 2-15 years |  | $ | 208,024 |  |  | $ | 95,768 |  |  | $ | 112,256 |
Covenants not to compete |  | 4-5 years |  |  | 33,542 |  |  |  | 28,280 |  |  |  | 5,262 |
Trade names |  | 1-5 years |  |  | 22,061 |  |  |  | 18,256 |  |  |  | 3,805 |
Proprietary software |  | 3-5 years |  |  | 22,698 |  |  |  | 15,810 |  |  |  | 6,888 |
Patent |  | 16 years |  |  | 17,479 |  |  |  | 3,583 |  |  |  | 13,896 |
Total other intangible assets —net |  |  |  | $ | 303,804 |  |  | $ | 161,697 |  |  | $ | 142,107 |

Intangible assets with finite lives are stated at cost, less accumulated amortization and impairment losses, if any. These intangible assets are amortized using the straight-line method over the estimated useful lives of the assets.

Amortization expense was $7.4 million and $14.6 million for the three and six months ended June 30, 2023, respectively, and $9.5 million and $18.9 million for the three and six months ended June 30, 2022, respectively.

Future amortization expense is estimated to be as follows for each of the five following years and thereafter:

December 31, |  |  |
2023 (remaining) |  | $ | 14,027 |
2024 |  |  | 25,239 |
2025 |  |  | 18,349 |
2026 |  |  | 14,498 |
2027 |  |  | 13,921 |
Thereafter |  |  | 51,335 |
Total |  | $ | 137,369 |

16

9. ACCOUNTS PAYABLE AND OTHER ACCRUED LIABILITIES

Accounts payable and other accrued liabilities consisted of the following:

|  | June 30, |  |  | December 31, |
|  | 2023 |  |  | 2022 |
Accounts payable |  | $ | 27,813 |  |  | $ | 25,353 |
Accrued expenses |  |  | 22,629 |  |  |  | 14,754 |
Other business acquisitions purchase price obligations |  |  | 1,085 |  |  |  | 1,185 |
Contract liabilities |  |  | 11,333 |  |  |  | 18,549 |
Other current liabilities |  |  | 3,570 |  |  |  | 3,571 |
Total accounts payable and other accrued liabilities |  | $ | 66,430 |  |  | $ | 63,412 |

10. ACCRUED PAYROLL AND BENEFITS

Accrued payroll and benefits consisted of the following:

|  | June 30, |  |  | December 31, |
|  | 2023 |  |  | 2022 |
Accrued bonuses |  | $ | 9,273 |  |  | $ | 8,624 |
Accrued paid time off |  |  | 1,556 |  |  |  | 1,088 |
Accrued payroll |  |  | 12,432 |  |  |  | 8,410 |
Accrued other |  |  | 2,346 |  |  |  | 2,406 |
Total accrued payroll and benefits |  | $ | 25,607 |  |  | $ | 20,528 |

17

11. INCOME TAXES

The Company calculates its interim income tax provision in accordance with ASC Topic 270, Interim Reporting (“ASC 270”), and ASC 740. The Company’s effective tax rate (“ETR”) from continuing operations was (2.2)% and (7.5)% for the three and six months ended June 30, 2023, respectively, and (12.0)% and (15.9)% f or the three and six months ended June 30, 2022, respectively. Income tax expense recorded by the Company during the three and six months ended June 30, 2023 was $0.2 million and $1.5 million, respectively. Income tax expense recorded by the Company during the three and six months ended June 30, 2022 wa s $0.8 million and $2.1 million, respectively. The difference between the ETR and federal statutory rate of 21.0% is primarily attributable to items recorded for U.S. G AAP but permanently disallowed for U.S. federal income tax purposes, recognition of a U.S. federal and state valuation allowance and state and foreign income tax provisions.

A valuation allowance is recorded when it is more-likely-than-not some of the Company’s deferred tax assets may not be realized. Significant judgment is applied when assessing the need for a valuation allowance and the Company considers future taxable income, reversals of existing deferred tax assets and liabilities and ongoing prudent and feasible tax planning strategies, in making such assessment. As of June 30, 2023, the Company’s U.S. federal, state and various foreign net deferred tax assets are not more-likely-than-not to be realized and a full valuation allowance is maintained.

The Company records uncertain tax positions in accordance with ASC 740, on the basis of a two-step process in which (i) the Company determines whether it is more likely than not a tax position will be sustained on the basis of the technical merits of such position and (ii) for those tax positions meeting the more-likely-than-not recognition threshold, the Company would recognize the largest amount of tax benefit that is more than 50.0% likely to be realized upon ultimate settlement with the related tax authority. The Company has determined it has no uncertain tax positions as of June 30, 2023. The Company classifies interest and penalties recognized on uncertain tax positions as a component of income tax expense.

12. DEBT

Debt consisted of the following:

|  | June 30, |  |  | December 31, |
|  | 2023 |  |  | 2022 |
Term loan facility |  | $ | 159,687 |  |  | $ | 166,250 |
Revolving line of credit |  |  | — |  |  |  | — |
Aircraft loan |  |  | 10,935 |  |  |  | — |
Less deferred debt issuance costs |  |  | (1,497 | ) |  |  | (1,725 | )
Total debt |  |  | 169,125 |  |  |  | 164,525 |
Less current portion of long-term debt |  |  | (13,149 | ) |  |  | (12,031 | )
Long-term debt, less current portion |  | $ | 155,976 |  |  | $ | 152,494 |

Deferred Financing Costs—Costs relating to debt issuance have been deferred and are presented as discounted against the underlying debt instrument. These costs are amortized to interest expense over the terms of the underlying debt instruments.

2021 Credit Facility—On April 27, 2021, the Company entered into a Senior Secured Credit Agreement providing for a $300.0 million credit facility comprised of a $175.0 million term loan and a $125.0 million revolving line of credit (the “2021 Credit Facility”), and used a portion of the proceeds from the 2021 Credit Facility to repay all amounts outstanding under the prior credit facility. The revolving line of credit portion of the 2021 Credit Facility includes a $20.0 million sublimit for the issuance of letters of credit. Subject to certain exceptions, all amounts under the 2021 Credit Facility will become due on April 27, 2026. The Company has the option to borrow incremental term loans or request an increase in the aggregate commitments under the revolving credit facility up to an aggregate amount of $150.0 million subject to the satisfaction of certain conditions.

18

The 2021 Credit Facility term loan must be repaid in quarterly installments and shall amortize at the following future quarterly rates:

Date | Quarterly Installment Rate
September 30, 2023 | 1.25%
December 31, 2023 | 1.88%
March 31, 2024 | 1.88%
June 30, 2024 | 1.88%
September 30, 2024 | 1.88%
December 31, 2024 | 1.88%
March 31, 2025 | 1.88%
June 30, 2025 | 1.88%
September 30, 2025 | 1.88%
December 31, 2025 | 2.50%
March 31, 2026 | 2.50%
April 27, 2026 | Remaining balance

Repayments of quarterly installments were scheduled to begin with the quarter ended December 31, 2021. The first quarterly installment repayment, amounting to $2.2 million, was paid in January 2022. Exclusive of the payment made in respect of the quarter ended December 31, 2021, the quarterly installment repayments for the six months ended June 30, 2022 amounted to $4.4 million. The December 31, 2022 installment repayment, amounting to $2.2 million, was paid in January 2023. Exclusive of the payment made in respect of the quarter ended December 31, 2022, the quarterly installment repayments for the six months ended June 30, 2023 amounted to $4.4 million.

On May 31, 2023, the Company amended its 2021 Credit Facility agreement to transition the reference rate from LIBOR to SOFR. The transition to SOFR did not materially impact the interest rate paid by the Company or change any material terms of the 2021 Credit Facility.

The 2021 Credit Facility term loan and the revolving line of credit bear interest subject to the applicable spread based on Company’s leverage ratio and SOFR plus 0.10% as follows:

Pricing Tier |  | Consolidated Leverage Ratio |  | Senior Credit Facilities SOFR Spread |  |  | Senior Credit Facilities Base Rate Spread |  |  | Commitment Fee |  |  | Letter of Credit Fee |  |
1 |  | ≥ 3.75 x to 1.0 |  |  | 2.50 |  | % |  | 1.50 |  | % |  | 0.25 |  | % |  | 2.50 |  | %
2 |  | < 3.75 x to 1.0 but ≥ 3.25 to 1.0 |  |  | 2.25 |  |  |  | 1.25 |  |  |  | 0.23 |  |  |  | 2.25 |  |
3 |  | <3.25 x to 1.0 but ≥ 2.50 to 1.0 |  |  | 2.00 |  |  |  | 1.00 |  |  |  | 0.20 |  |  |  | 2.00 |  |
4 |  | <2.50 x to 1.0 but ≥ 1.75 to 1.0 |  |  | 1.75 |  |  |  | 0.75 |  |  |  | 0.15 |  |  |  | 1.75 |  |
5 |  | <1.75 x to 1.0 |  |  | 1.50 |  |  |  | 0.50 |  |  | 0.15 |  |  |  | 1.50 |  |

On May 30, 2023, the Company amended the interest rate swap transaction it entered into on January 27, 2022 (the "2022 Interest Rate Swap"), to convert the floating component of the interest rate on $100.0 million of borrowings to 1-Month Term SOFR and a new coupon of 1.319% until January 27, 2025. Prior to the amendment, the floating component of the interest rate was subject to LIBOR and a coupon of 1.39%. The transition to SOFR did not materially impact the interest rate paid by the Company or change any material terms of the 2022 Interest Rate Swap.

Further, on May 30, 2023, the Company entered into a second interest rate swap transaction fixing the floating component of the interest rate on an additional $70.0 million of borrowings to 1-Month Term SOFR and a coupon of 3.88% until April 27, 2026.

Additionally, effective September 1, 2022, the Company received an interest rate reduction of 0.05% under the 2021 Credit Facility based on the Company’s achievement of certain sustainability and environmental, social and governance related objectives as provided for in the 2021 Credit Facility.

The 2021 Credit Facility includes a number of covenants imposing certain restrictions on the Company’s business, including, among other things, restrictions on the Company’s ability, subject to certain exceptions and baskets, to incur indebtedness, incur liens on its assets, agree to any additional negative pledges, pay dividends or repurchase stock, limit the ability of its subsidiaries to pay dividends or distribute assets, make investments, enter into any transaction of merger or consolidation, liquidate, wind-up or dissolve, or convey any part of its business, assets or property, or acquire the business, property or assets of another person, enter into sale and leaseback transactions, enter into certain transactions with affiliates, engage in any material line of business substantially different from those engaged on the closing date, modify the terms of indebtedness subordinated to the loans incurred under the 2021 Credit Facility and modify the terms of its organizational documents. The 2021 Credit Facility also includes financial covenants which required the Company to remain below a maximum total net leverage ratio of 4.25 times until the fiscal quarter ended September 31, 2022, which stepped down to 4.00 times during the fiscal quarter ending December 31, 2022 and applies through and including the fiscal quarter ending September 30, 2023 and then further steps down to 3.75 times beginning with the fiscal

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quarter ending December 31, 2023, and a minimum fixed charge coverage ratio of 1.25 times. As of June 30, 2023 and December 31, 2022, the Company’s consolidated total leverage ratio (as defined in the 2021 Credit Facility) was 1.9 times and 1.3 times, respe ctively, and the Company was in compliance with all covenants under the 2021 Credit Facility.

The 2021 Credit Facility requires customary mandatory prepayments of the term loan and revolver and cash collateralization of letters of credit, subject to customary exceptions, including 100.0% of the proceeds of debt not permitted by the 2021 Credit Facility, 100.0% of the proceeds of certain dispositions, subject to customary reinvestment rights, where applicable, and 100.0% of insurance or condemnation proceeds, subject to customary reinvestment rights, where applicable. The 2021 Credit Facility also includes customary events of default and related acceleration and termination rights.

The weighted average interest rate on the 2021 Credit Facility for the six months ended June 30, 2023 and June 30, 2022, before giving effect to the impact of the interest rate swaps, was 6.3% and 2.2%, respectively.

The Company’s obligations under the 2021 Credit Facility are guaranteed by certain of the Company’s existing and future direct and indirect subsidiaries, and such obligations are secured by substantially all of the Company’s assets, including the capital stock or other equity interests in those subsidiaries.

Loan and Aircraft Security Agreement—On May 18, 2023, the Company entered into a Loan and Aircraft Security Agreement to finance $10.9 million of the purchase a new aircraft (the "Aircraft Loan"). The Aircraft Loan must be repaid in 60 monthly consecutive installments and all outstanding amounts will become due on May 18, 2028. The Aircraft Loan bears interest subject to 1-Month Term SOFR and a coupon of 1.86%. The entire principal balance may be prepaid in full subject to a 3.0%, 2.0% and 1.0% prepayment fee if paid prior to the first, second and third anniversary of the loan, respectively. The aircraft serves as collateral security for the Aircraft Loan.

Equipment Line of Credit—The Company has a $5.0 million equipment leasing facility for the purchase of equipment and related freight, installation costs and taxes paid. Any unused capacity on this equipment leasing facility expires on December 31, 2023, with a 3-month extension option expiring on March 31, 2024. Interest on the line of credit is determined based on a three-year swap rate at the time of funding. Equipment leased through this line of credit met the finance lease criteria as per ASC 842 and accordingly is accounted for as finance lease right-of-use assets and finance lease liabilities (Note 6).

The following is a schedule of the aggregate annual maturities of long-term debt presented on the unaudited condensed consolidated statement of financial position, gross of deferred debt issuance cost of $1.5 million, based on the terms of the 2021 Credit Facility and the Aircraft Loan:

June 30, |  | 2021 Credit Facility |  | Aircraft Loan |  | Total |
2024 |  | $ | 12,031 |  | $ | 1,118 |  | $ | 13,149 |
2025 |  |  | 13,125 |  |  | 1,109 |  |  | 14,234 |
2026 |  |  | 134,531 |  |  | 1,188 |  |  | 135,719 |
2027 |  |  | — |  |  | 1,273 |  |  | 1,273 |
2028 |  |  | — |  |  | 6,247 |  |  | 6,247 |
Total |  | $ | 159,687 |  | $ | 10,935 |  | $ | 170,622 |

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13. FAIR VALUE OF FINANCIAL INSTRUMENTS

The following financial instruments are measured at fair value on a recurring basis using significant unobservable inputs (Level 3):

|  | June 30, |  |  | December 31, |
|  | 2023 |  |  | 2022 |
Interest rate swap(1) |  | $ | 6,462 |  |  | $ | 6,046 |
Total assets |  | $ | 6,462 |  |  | $ | 6,046 |
Business acquisitions contingent consideration, current |  | $ | 4,119 |  |  | $ | 3,801 |
Business acquisitions contingent consideration, long-term |  |  | 2,311 |  |  |  | 4,454 |
Conversion option |  |  | 27,155 |  |  |  | 25,731 |
Total liabilities |  | $ | 33,585 |  |  | $ | 33,986 |

_____________________________

(1) Included in other assets in the unaudited condensed consolidated statement of financial position.

The estimated fair value amounts shown above are not necessarily indicative of the amounts that the Company would realize upon disposition, nor do they indicate the Company’s intent or ability to dispose of the financial instrument.

The following table sets forth the Company’s financial instruments that were measured at fair value on a recurring basis:

| Interest Rate Swap |  |  | Total Assets |  |  | Business Acquisitions Contingent Consideration, Current |  |  | Business Acquisitions Contingent Consideration, Long-term |  |  | Conversion Option |  |  | Total Liabilities |
Balance—at January 1, 2022 | $ | — |  |  | $ | — |  |  | $ | 31,450 |  |  | $ | 4,350 |  |  | $ | 23,081 |  |  | $ | 58,881 |
Acquisitions |  | — |  |  |  | — |  |  |  | — |  |  |  | 1,216 |  |  |  | — |  |  |  | 1,216 |
Changes in fair value included in earnings |  | 3,982 |  |  |  | 3,982 |  |  |  | (73 | ) |  |  | (390 | ) |  |  | 1,126 |  |  |  | 663 |
Payment of contingent consideration payable |  | — |  |  |  | — |  |  |  | (30,179 | ) |  |  | — |  |  |  | — |  |  |  | (30,179 | )
Reclass of long term to short term contingent liabilities |  | — |  |  |  | — |  |  |  | 1,616 |  |  |  | (1,616 | ) |  |  | — |  |  |  | — |
Balance—at June 30, 2022 | $ | 3,982 |  |  | $ | 3,982 |  |  | $ | 2,814 |  |  | $ | 3,560 |  |  | $ | 24,207 |  |  | $ | 30,581 |
Balance—at January 1, 2023 | $ | 6,046 |  |  | $ | 6,046 |  |  | $ | 3,801 |  |  | $ | 4,454 |  |  | $ | 25,731 |  |  | $ | 33,986 |
Acquisitions |  | — |  |  |  | — |  |  |  | 25 |  |  |  | — |  |  |  | — |  |  |  | 25 |
Changes in fair value included in earnings |  | 416 |  |  |  | 416 |  |  |  | (162 | ) |  |  | 117 |  |  |  | 1,424 |  |  |  | 1,379 |
Payment of contingent consideration payable |  | — |  |  |  | — |  |  |  | (1,805 | ) |  |  | — |  |  |  | — |  |  |  | (1,805 | )
Reclass of long term to short term contingent liabilities |  | — |  |  |  | — |  |  |  | 2,260 |  |  |  | (2,260 | ) |  |  | — |  |  |  | — |
Balance—at June 30, 2023 | $ | 6,462 |  |  | $ | 6,462 |  |  | $ | 4,119 |  |  | $ | 2,311 |  |  | $ | 27,155 |  |  | $ | 33,585 |

Quantitative Information about Assets and Liabilities Measured at Fair Value on a Recurring Basis Using Significant Unobservable Inputs (Level 3):

Interest Rate Swaps—The interest rate swaps fair value is estimated based on a mid-market price for the swaps as of the close of business of the reporting period. The fair value is prepared by discounting future cash flows of the swap to arrive at a current value of the swap. Forward curves and volatility levels inputs are determined on the basis of observable market inputs when available and on the basis of estimates when observable market inputs are not available. The Company does not apply hedge accounting but instead recognizes the instrument at fair value on

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the unaudited condensed consolidated statement of financial position within other assets, with changes in fair value recognized as other (expense) income in each reporting period.

Business Acquisitions Contingent Consideration—The fair value of the contingent consideration payable associated with the acquisition of CTEH was determined using a Monte Carlo simulation of earnings in a risk-neutral Geometric Brownian Motion framework. The fair value of the contingent consideration payable associated with the acquisition of Environmental Standards was determined using a Probabilistic (Scenario Based) method. The fair values of the contingent consideration payables for the other acquisitions, including Sensible, were calculated based on expected target achievement amounts, which are measured quarterly and then subsequently adjusted to actuals at the target measurement date. Prior to the second quarter of 2023, the fair value of the contingent consideration payable associated with the acquisition of Sensible was determined using a Monte Carlo simulation of earnings in a risk-neutral Geometric Brownian Motion framework. As of June 30, 2023, the Sensible earnout is expected to be achieved in full and therefore, the entire payable has been recorded. The method used to price these liabilities is considered level 3 due to the subjective nature of the unobservable inputs used to determine the fair value. The input is the expected achievement of earn-out thresholds.

Conversion Option—The fair value of the conversion option associated with the issuance of the Convertible and Redeemable Series A-2 Preferred Stock (Note 15) was estimated using a “with-and-without” method. The “with-and-without” methodology considers the value of the security on an as-is basis and then without the embedded conversion premium. The difference between the two scenarios is the implied fair value of the embedded derivative. The unobservable input is the required rate of return on the Series A-2. The considerable quantifiable inputs in the valuation relate to the timing of conversions or redemptions.

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14. COMMITMENTS AND CONTINGENCIES

Leases—The Company leases office facilities over various terms expiring through 2031. Certain of these operating leases contain rent escalation clauses. The Company also has office equipment leases that expire through 2028 (Note 6 and 12).

Other Commitments—The Company has commitments under the 2021 Credit Facility, its Aircraft Loan, its equipment line of credit and its lease obligations (Note 6 and 12).

Contingencies—The Company is subject to purchase price contingencies related to earn-outs associated with certain acquisitions (Note 7 and 13).

Legal—In the normal course of business, the Company is at times subject to pending and threatened legal actions. In management’s opinion, the potential loss resulting from the resolution of these matters is not expected to have a material effect on the unaudited condensed consolidated results of operations, financial position or cash flows of the Company.

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15. CONVERTIBLE AND REDEEMABLE SERIES A-2 PREFERRED STOCK

On April 13, 2020, the Company entered into an agreement to issue 17,500 shares of the Convertible and Redeemable Series A-2 Preferred Stock with a par value of $0.0001 per share and a detachable warrant to purchase shares of the Company’s common stock with a 10-year life, in exchange for gross proceeds of $175.0 million, net of $1.3 million debt issuance costs. The Convertible and Redeemable Series A-2 Preferred Stock warrants were exercised in full on July 30, 2020. The Company paid dividends on shares of the Convertible and Redeemable Series A-2 Preferred Stock of $4.1 million during both the three months ended June 30, 2023 and June 30, 2022, and $8.2 million during both the six months ended June 30, 2023 and June 30, 2022.

The Convertible and Redeemable Series A-2 Preferred Stock terms include the following: (i) no mandatory redemption, (ii) no stated value cash repayment obligation other than in the event of certain defined liquidation events, (iii) only redeemable at the Company’s option, (iv) convertible into common stock beginning on the four year anniversary of issuance at a 15.0% discount to the common stock market price (with a limit of $60.0 million in stated value of Convertible and Redeemable Series A-2 Preferred Stock eligible to be converted in any 60-day period prior to the seventh anniversary of issuance and the amount of stated value of the Convertible and Redeemable Series A-2 Preferred Stock eligible for conversion limited to $60.0 million during year 5 and $120.0 million (which includes the aggregate amount of the stated value of the Convertible and Redeemable Series A-2 Preferred Stock and any accrued but unpaid dividends added to such stated value of any shares of Convertible and Redeemable Series A-2 Preferred Stock converted in year 5) during year 6), (v) 9.0% dividend rate per year with required quarterly cash payments, (vi) in an event of noncompliance, the dividend rate shall increase to 12.0% per annum for the first 90-day period from and including the date the noncompliance event occurred, and thereafter shall increase to 14.0% per annum, (vii) debt incurrence test ratio of 4.5 times, and (viii) minimum repayment amount of $25.0 million.

The Company may, at its option on any one or more dates, redeem all or a minimum portion (the lesser of (i) $25.0 million in aggregate stated value of the Convertible and Redeemable Series A-2 Preferred Stock and (ii) all of the Convertible and Redeemable Series A-2 Preferred Stock then outstanding) of the outstanding Convertible and Redeemable Series A-2 Preferred Stock in cash.

With respect to any redemption of any share of the Convertible and Redeemable Series A-2 Preferred Stock prior to the third-year anniversary, the Company was subject to a make whole penalty in which the holders of the Convertible and Redeemable Series A-2 Preferred Stock are guaranteed a minimum repayment equal to outstanding redeemed stated value plus three years of dividends accrued or accruable thereon. Beginning on April 13, 2023, the Company is no longer subject to this make whole penalty.

The Convertible and Redeemable Series A-2 Preferred Stock does not meet the definition of a liability pursuant to “ASC 480- Distinguishing Liabilities from Equity.” However, as (i) the instrument is redeemable upon a change of control as defined in the certificate of designations governing the terms of the Convertible and Redeemable Series A-2 Preferred Stock, and (ii) the Company cannot assert it would have sufficient authorized and unissued shares of common stock to settle all future conversion requests due to the variable conversion terms, the instrument is redeemable upon the occurrence of events that are not solely within the control of the Company, and therefore the Company classifies the Convertible and Redeemable Series A-2 Preferred Stock as mezzanine equity. Subsequent adjustment of the carrying value of the instrument is required if the instrument is probable of becoming redeemable. As of June 30, 2023, the Company has determined that a change of control is not probable. Additionally, as of June 30, 2023, the Company has determined that it is not probable that there will be a future conversion request that the Company is unable to settle with authorized and issued shares based on the Company’s current stock price and available shares as well as the Company’s monitoring efforts to ensure there are a sufficient number of shares available to settle any conversion request. Therefore, as of June 30, 2023, the Company has determined that the instrument is not probable of becoming redeemable, and does not believe subsequent adjustment of the carrying value of the instrument will be necessary.

The Convertible and Redeemable Series A-2 Preferred Stock contains a conversion option of the preferred shares to shares of common stock beginning on the fourth-year anniversary of the issuance date. As of June 30, 2023 and December 31, 2022, this conversion embedded feature had a net fair value of $27.2 million and $25.7 million, respectively. The change in net fair value of $0.5 million and $1.4 million for the three and six months ended June 30, 2023, respectively, and $0.6 million and $1.1 million for the three and six months ended June 30, 2022, respectively, was recorded to other expense.

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16. STOCKHOLDERS’ EQUITY

Authorized Capital Stock—The Company was authorized to issue 190,000,000 shares of common stock, with a par value of $0.000004 per share as of June 30, 2023 and December 31, 2022.

Common Stock Issuances—The Co mpany issued the following shares of common stock:

| Three Months Ended June 30, |
| 2023 |  |  | 2022 |
| Shares |  |  | Average Price per Share |  |  | Total |  |  | Shares |  |  | Average Price per Share |  |  | Total |
Acquisitions |  | 86,577 |  |  | $ | 30.01 |  |  | $ | 2,598 |  |  |  | — |  |  | $ | — |  |  | $ | — |
Exercise of options |  | 43,538 |  |  |  | 13.89 |  |  |  | 605 |  |  |  | 3,575 |  |  |  | 15.15 |  |  |  | 54 |
Total |  | 130,115 |  |  | $ | 24.61 |  |  | $ | 3,203 |  |  |  | 3,575 |  |  | $ | 15.15 |  |  | $ | 54 |
| Six Months Ended June 30, |
| 2023 |  |  | 2022 |
| Shares |  |  | Average Price per Share |  |  | Total |  |  | Shares |  |  | Average Price per Share |  |  | Total |
Acquisitions |  | 86,577 |  |  | $ | 30.01 |  |  | $ | 2,598 |  |  |  | — |  |  | $ | — |  |  | $ | — |
Exercise of options |  | 167,993 |  |  |  | 19.61 |  |  |  | 3,295 |  |  |  | 34,182 |  |  |  | 14.15 |  |  |  | 483 |
Restricted shares, net (1) |  | 90,116 |  |  |  | 66.30 |  |  |  | — |  |  |  | 25,289 |  |  |  | 66.58 |  |  |  | — |
Total |  | 344,686 |  |  | $ | 34.43 |  |  | $ | 5,893 |  |  |  | 59,471 |  |  | $ | 36.44 |  |  | $ | 483 |

(1) Represents the non-cash release of common shares due to the vesting of restricted stock.

Employee Equity Incentive Plans—The Company has two plans under which stock-based awards have been issued: (i) the Montrose Amended & Restated 2017 Stock Incentive Plan (“2017 Plan”) and (ii) the Montrose Amended & Restated 2013 Stock Option Plan (“2013 Plan”) (collectively the “Plans”).

As of June 30, 2023, and June 30, 2022, there was $141.5 million and $162.1 million, respectively, of total unrecognized stock-based compensation expense related to unvested options, restricted stock and stock appreciation rights granted under the Plans. Such unrecognized expense is expected to be recognized over a weighted-average three year period. The following number of shares were authorized to be issued and available for grant:

|  | June 30, 2023 |
|  | 2017 Plan |  |  | 2013 Plan |  |  | Total |
Shares authorized to be issued |  |  | 6,330,588 |  |  |  | 2,036,344 |  |  |  | 8,366,932 |
Shares available for grant(1) |  |  | 750,326 |  |  |  | — |  |  |  | 750,326 |
|  | June 30, 2022 |
|  | 2017 Plan |  |  | 2013 Plan |  |  | Total |
Shares authorized to be issued |  |  | 8,139,987 |  |  |  | 2,037,144 |  |  |  | 10,177,131 |
Shares available for grant(1) |  |  | 445,244 |  |  |  | — |  |  |  | 445,244 |

(1) In January 2023 and January 2022 the Board of Directors ratified the addition of 1,189,801 and 1,185,112 shares of common stock, respectively, to the number of shares available for issuance under the 2017 Plan pursuant to the annual increase provision of such plan. Unless the Board of Directors determines otherwise, additional annual increases will be effective on each January 1, through January 1, 2027. The 2017 Plan permits the company to settle awards, if and when vested, in cash at its discretion. Pursuant to the terms of the 2017 Plan, the number of shares authorized for issuance thereunder will only be reduced with respect to shares of common stock actually issued upon exercise or settlement of an award. Shares of common stock subject to awards that have been canceled, expired, forfeited or otherwise not issued under an award and shares of common stock subject to awards settled in cash do not count as shares of common stock issued under the 2017 Plan. Shares available for grant exclude awards of stock appreciation rights approved in December 2021 that are subject to vesting based on the achievement of certain market conditions, which have not yet been, and may not be, a chieved. See footnote 1 to the table in Common Stock Reserved for Future Issuance below for additional information on stock appreciation rights.

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Total stock-based compensation expense for the Plans was as follows:

|  | Three Months Ended June 30, |
|  | 2023 |  |  | 2022 |
|  | 2017 plan |  |  | 2013 plan |  |  |  |  |  | 2017 plan |  |  | 2013 plan |  |  |  |
|  | Options |  |  | Restricted Stock |  |  | SARs |  |  | Options |  |  | Total |  |  | Options |  |  | Restricted Stock |  |  | SARs |  |  | Options |  |  | Total |
Cost of revenue |  | $ | 466 |  |  | $ | 243 |  |  | $ | — |  |  | $ | — |  |  | $ | 709 |  |  | $ | 371 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 371 |
Selling, general and administrative expense |  |  | 1,070 |  |  |  | 7,021 |  |  |  | 2,290 |  |  |  | — |  |  |  | 10,381 |  |  |  | 2,254 |  |  |  | 6,017 |  |  |  | 2,290 |  |  |  | — |  |  |  | 10,561 |
Total |  | $ | 1,536 |  |  | $ | 7,264 |  |  | $ | 2,290 |  |  | $ | — |  |  | $ | 11,090 |  |  | $ | 2,625 |  |  | $ | 6,017 |  |  | $ | 2,290 |  |  | $ | — |  |  | $ | 10,932 |
|  | Six Months Ended June 30, |
|  | 2023 |  |  | 2022 |
|  | 2017 plan |  |  | 2013 plan |  |  |  |  |  | 2017 plan |  |  |  |  |  | 2013 plan |  |  |  |
|  | Options |  |  | Restricted Stock |  |  | SARs |  |  | Options |  |  | Total |  |  | Options |  |  | Restricted Stock |  |  | SARs |  |  | Options |  |  | Total |
Cost of revenue |  | $ | 815 |  |  | $ | 786 |  |  | $ | — |  |  | $ | — |  |  | $ | 1,601 |  |  | $ | 665 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 665 |
Selling, general and administrative expense |  |  | 2,794 |  |  |  | 15,175 |  |  |  | 4,555 |  |  |  | — |  |  |  | 22,524 |  |  |  | 4,233 |  |  |  | 11,809 |  |  |  | 4,650 |  |  |  | — |  |  |  | 20,692 |
Total |  | $ | 3,609 |  |  | $ | 15,961 |  |  | $ | 4,555 |  |  | $ | — |  |  | $ | 24,125 |  |  | $ | 4,898 |  |  | $ | 11,809 |  |  | $ | 4,650 |  |  | $ | — |  |  | $ | 21,357 |

Montrose Amended & Restated 2017 Stock Incentive Plan

Restricted Stock Awards and Restricted Stock Units—The Company issues restricted stock awards ("RSAs") to certain 2017 Plan participants as Director’s compensation. There were zero RSAs granted during the three months ended June 30, 2023 and June 30, 2022. There were 17,346 and 10,920 RSAs granted during the six months ended June 30, 2023 and June 30, 2022, respectively. These RSAs vest one year from the date of grant, or, in each case, in full upon a change in control, subject to the participant’s continued service as a Director throughout such date, or upon retirement. Members of the Board of Directors that receive stock-based compensation are treated as employees for accounting purposes.

During the three and six months ended June 30, 2023, the Board of Directors approved the grant of 53,164 and 253,587 restricted stock units (“RSUs”) to certain senior non-executive employees of the Company, in lieu of options. These RSUs represent the right to receive one share of the Company’s common stock upon vesting. These RSUs vest annually over a 4-year period from the date of grant, subject to continued service through each such date. No RSUs were issued to senior non-executive employees during the six months ended June 30, 2022.

During 2023 and 2022, the Board of Directors approved the grant of RSUs under certain supplemental incentive plans ("SI Plans"). There were 123,932 and zero RSUs issued under these SI Plans during the three months ended June 30, 2023 and June 30, 2022, respectively. There were 253,587 and 95,404 RSUs issued under these SI Plans during the six months ended June 30, 2023 and June 30, 2022, respectively. The majority of the RSUs issued during the six months ended June 30, 2023 vested 1/3 on the date of grant, and will vest 1/3 on the one-year anniversary of the grant, and 1/3 on the two-year anniversary of the grant, subject to continued service through each such date. The remaining RSUs vest a nnually over a 4-year period fro m the date of grant, subject to continued service through each such date.

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RSAs and RSUs activity was as follows:

| Three Months Ended June 30, |
| 2023 |  |  | 2022 |
| Shares |  |  | Average Price per Share |  |  | Fair Value (in thousands) |  |  | Shares |  |  | Average Price per Share |  |  | Fair Value (in thousands) |
Awards granted |  | 177,096 |  |  | $ | 37.27 |  |  | $ | 6,600 |  |  |  | — |  |  | $ | — |  |  | $ | — |
Awards forfeited |  | (3,559 | ) |  |  | 32.16 |  |  |  | 114 |  |  |  | — |  |  |  | — |  |  |  | — |
| Six Months Ended June 30, |
| 2023 |  |  | 2022 |
| Shares |  |  | Average Price per Share |  |  | Fair Value |  |  | Shares |  |  | Average Price per Share |  |  | Fair Value |
Awards granted |  | 641,282 |  |  | $ | 33.90 |  |  | $ | 21,740 |  |  |  | 106,324 |  |  | $ | 46.82 |  |  | $ | 4,978 |
Awards forfeited |  | (3,559 | ) |  |  | 32.16 |  |  |  | 114 |  |  |  | — |  |  |  | — |  |  |  | — |
Awards vested |  | 90,116 |  |  |  | 36.81 |  |  |  | 3,317 |  |  |  | 25,289 |  |  |  | 30.98 |  |  |  | 783 |

There were an aggregate of 2,701,920 and 2,064,197 shares underlying outstanding RSAs and RSUs awards as of June 30, 2023 and June 30, 2022, respectively.

Stock Appreciation Rights— As of June 30, 2023 , there were 3,000,000 units of stock appreciation rights (“SARs”) outstanding under the 2017 Plan. These SARs represent the right to receive, upon exercise, a payment equal to the excess of (a) the fair market value of one share of the Company’s common stock, over (b) an exercise price of $66.79, payable, at the Company’s election, in cash or shares of common stock. These SARs vest on the 5th anniversary of the date of grant based on achievement of performance hurdles over a five year period, subject to continued service on the vesting date. The performance hurdles are as follows:

SARs Stock Price Performance Hurdle |  | Portion of SARs Subject to Performance Hurdle
$ | 133.58 |  | 1/3
$ | 166.98 |  | 1/3
$ | 200.37 |  | 1/3

The performance hurdles shall be deemed achieved if the average trading price per share of the Company’s common stock equals or exceeds the applicable stock price performance hurdle set forth above for the trading days falling in a consecutive 20-day period prior to the vesting date. None of the market conditions have been achieved as of June 30, 2023.

The SARs expire 10 years after the grant date. The fair value of these SARs at the grant date was $46.0 million. The weighted average remaining contract life of these SARs as of June 30, 2023 was 8.46 years.

Options—Options issued to all optionees under the 2017 P lan vest over 4-years from the date of issuance (or earlier vesting start date, as determined by the Board of Directors) as follows: one half on the second anniversary of date of grant and the remaining half on the fourth

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anniversary of the date of grant, with the exception of certain annual grants to certain executive officers, which vest annually over a 3-year and 1-year period. The following summarizes the options activity of the 2017 Plan:

|  | Options to Purchase Common Stock |  |  | Weighted- Average Exercise Price per Share |  |  | Weighted Average Grant Date Fair Value per Share |  |  | Weighted Average Remaining Contract Life (in Years) |  |  | Aggregate Intrinsic Value of In-The- Money Options (in Thousands) |
Outstanding as of January 1, 2022 |  |  | 2,036,729 |  |  | $ | 26 |  |  | $ | 14 |  |  |  | 8.30 |  |  | $ | 91,030 |
Granted |  |  | 563,084 |  |  |  | 44 |  |  |  | 16 |  |  |  | — |  |  |  | — |
Forfeited/ cancelled |  |  | (38,887 | ) |  |  | 35 |  |  |  | — |  |  |  | — |  |  |  | — |
Exercised |  |  | (14,197 | ) |  |  | 25 |  |  |  | — |  |  |  | — |  |  |  | 393 |
Outstanding as of June 30, 2022 |  |  | 2,546,729 |  |  |  | 30 |  |  |  | 15 |  |  |  | 8.22 |  |  |  | 19,199 |
Outstanding as of January 1, 2023 |  |  | 2,579,566 |  |  | $ | 31 |  |  | $ | 15 |  |  |  | 7.76 |  |  | $ | 37,292 |
Granted |  |  | 233,955 |  |  |  | 32 |  |  |  | 14 |  |  |  | — |  |  |  | — |
Forfeited/ cancelled |  |  | (63,085 | ) |  |  | 37 |  |  |  | — |  |  |  | — |  |  |  | — |
Expired |  |  | (1,200 | ) |  |  | 25 |  |  |  | — |  |  |  | — |  |  |  | — |
Exercised |  |  | (125,229 | ) |  |  | 24 |  |  |  | — |  |  |  | — |  |  |  | 2,794 |
Outstanding as of June 30, 2023 |  |  | 2,624,007 |  |  | $ | 31 |  |  | $ | 16 |  |  |  | 7.46 |  |  | $ | 32,414 |
Exercisable at June 30, 2023 |  |  | 1,365,861 |  |  |  | 29 |  |  |  | — |  |  |  | 6.76 |  |  |  | 18,892 |

The following weighted-average assumptions were used in the Black-Sholes option-pricing model calculation:

|  | June 30, |  |  | June 30, |
|  | 2023 |  |  | 2022 |
Common stock value (per share) |  | $ | 32.16 |  |  | $ | 44.01 |
Expected volatility |  |  | 33.79 | % |  |  | 33.45 | %
Risk-free interest rate |  |  | 3.72 | % |  |  | 1.78 | %
Expected life (years) |  |  | 7.00 |  |  |  | 6.35 |
Forfeiture rate |  | None |  |  | None |
Dividend rate |  | None |  |  | None |

Montrose Amended & Restated 2013 Stock Option Plan—The following summarizes the activity of the 2013 Plan:

|  | Options to Purchase Common Stock |  |  | Weighted- Average Exercise Price per Share |  |  | Weighted Average Grant Date Fair Value per Share |  |  | Weighted Average Remaining Contract Life (in Years) |  |  | Aggregate Intrinsic Value of In-The- Money Options (in Thousands) |
Outstanding as of January 1, 2022 |  |  | 897,674 |  |  | $ | 6 |  |  | $ | 2 |  |  |  | 4.37 |  |  | $ | 57,529 |
Exercised |  |  | (19,985 | ) |  |  | 6 |  |  |  | — |  |  |  | — |  |  |  | 859 |
Outstanding as of June 30, 2022 |  |  | 877,689 |  |  |  | 6 |  |  |  | 2 |  |  |  | 3.88 |  |  |  | 23,991 |
Outstanding as of January 1, 2023 |  |  | 855,695 |  |  | $ | 6 |  |  | $ | 2 |  |  |  | 3.31 |  |  | $ | 32,478 |
Expired |  |  | (675 | ) |  |  | 6 |  |  |  | — |  |  |  | — |  |  |  | — |
Exercised |  |  | (42,764 | ) |  |  | 7 |  |  |  | — |  |  |  | — |  |  |  | 1,514 |
Outstanding as of June 30, 2023 |  |  | 812,256 |  |  | $ | 6 |  |  | $ | 2 |  |  |  | 2.83 |  |  | $ | 29,030 |
Exercisable at June 30, 2023 |  |  | 812,256 |  |  |  | 6 |  |  |  | — |  |  |  | 2.83 |  |  |  | 29,030 |

Total shares outstanding from exercised options were 1,478,423 shares and 1,243,272 shares as of June 30, 2023 and June 30, 2022, respectively.

28

Common Stock Reserved for Future Issuances—The Company has reserved certain stock of its authorized but unissued common stock for possible future issuance in connection with the following:

|  | June 30, |
|  | 2023 |  |  | 2022 |
Montrose 2013 Stock Incentive Plan |  |  | 812,256 |  |  |  | 877,689 |
Montrose 2017 Stock Incentive Plan(1) |  |  | 8,699,655 |  |  |  | 7,769,931 |
Total |  |  | 9,511,911 |  |  |  | 8,647,620 |

(1) In January 2023 and 2022, the Board of Directors ratified the addition of 1,189,801 and 1,185,112 shares of common stock, respectively, to the number of shares available for issuance under the 2017 Plan pursuant to the annual increase provision of such plan. Unless the Board of Directors determines otherwise, additional annual increases will be effective on each January 1, through January 1, 2027. The 2017 Plan permits the company to settle awards, if and when vested, in cash at its discretion. Pursuant to the terms of the 2017 Plan, the number of shares authorized for issuance thereunder will only be reduced with respect to shares of common stock actually issued upon exercise or settlement of an award. Shares of common stock subject to awards that have been canceled, expired, forfeited or otherwise not issued under an award and shares of common stock subject to awards settled in cash do not count as shares of common stock issued under the 2017 Plan. The Company expects to have sufficient shares available under the 2017 Plan to satisfy the future settlement of outstanding awards. Shares reserved for future issuance include 3,000,000 shares underlying the 3,000,000 performance SARs granted in December 2021 that are subject to vesting based on the achievement of certain market conditions. Assuming achievement at the highest price performance hurdle, approximately 2,000,000 shares of common stock would be issued upon vesting of these performance SARs. To date, none of the market conditions have been achieved.

29

17. NET LOSS PER SHARE

Basic net loss per share is computed by dividing net loss attributable to common stockholders by the weighted average number of common shares outstanding during each period. The Convertible and Redeemable Series A-2 Preferred Stock is considered a participating security during the applicable period. Net losses are not allocated to the Convertible and Redeemable Series A-2 stockholders, as they were not contractually obligated to share in the Company’s losses.

Diluted net loss per share is computed by dividing net loss attributable to common stockholders by the weighted average number of common and dilutive common equivalent shares outstanding for the period using the treasury-stock method or the as-converted method. Potentially dilutive shares are comprised of RSAs, RSUs, SARs and shares of common stock underlying stock options outstanding under the Plans. During the three and six months ended June 30, 2023 and June 30, 2022, there is no difference in the number of shares used to calculate basic and diluted shares outstanding during the applicable period due to the Company’s net loss attributable to common stockholders and potentially dilutive shares being anti-dilutive.

The following table summarizes the computation of basic and diluted net loss per share attributable to common stockholders of the Company:

|  | Three Months Ended |  |  | Six Months Ended |
|  | June 30, |  |  | June 30, |
(In thousands, except for net loss per share) |  | 2023 |  |  | 2022 |  |  | 2023 |  |  | 2022 |
Net loss |  | $ | (7,174 | ) |  | $ | (7,751 | ) |  | $ | (21,893 | ) |  | $ | (15,287 | )
Convertible and redeemable series A-2 preferred stock dividend |  |  | (4,100 | ) |  |  | (4,100 | ) |  |  | (8,200 | ) |  |  | (8,200 | )
Net loss attributable to common stockholders –basic and diluted |  |  | (11,274 | ) |  |  | (11,851 | ) |  |  | (30,093 | ) |  |  | (23,487 | )
Weighted-average common shares outstanding – basic and diluted |  |  | 30,047 |  |  |  | 29,678 |  |  |  | 29,952 |  |  |  | 29,670 |
Net loss per share attributable to common stockholders –basic and diluted |  | $ | (0.38 | ) |  | $ | (0.40 | ) |  | $ | (1.00 | ) |  | $ | (0.79 | )

The following common stock equivalents were excluded from the calculation of dilute d net loss per share attributable to common stockholders because their effect would have been anti-dilutive:

|  | June 30, |
|  | 2023(1) |  |  | 2022(1) |
Stock options |  |  | 3,436,263 |  |  |  | 3,424,418 |
Restricted stock |  |  | 2,325,322 |  |  |  | 1,777,958 |
Series A-2 |  |  | 5,350,017 |  |  |  | 4,728,460 |
SARs |  |  | 3,000,000 |  |  |  | 3,000,000 |

_____________________________

(1) Includes 7,578,724 and 6,523,097 common stock equivalents that are out of the money as of June 30, 2023 and June 30, 2022, respectively.

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18. SEGMENT INFORMATION

The Company has three operating and reportable segments: Assessment, Permitting and Response, Measurement and Analysis and Remediation and Reuse. These segments are monitored separately by management for performance against budget and prior year and are consistent with internal financial reporting. The Company’s operating segments are organized based upon primary services provided, the nature of the production process, their type of customers, methods used to distribute the products and the nature of the regulatory environment.

Segment Adjusted EBITDA is the primary measure of operating performance for all three operating segments. Segment Adjusted EBITDA is the calculated Co mpany’s Earnings before Interest, Tax, Depreciation and Amortization (“EBITDA”), adjusted to exclude certain transactions such as stock-based compensation, acquisition costs and fair value changes in financial instruments, amongst others. Beginning in the first quarter of 2023, the calculation of Segment adjusted EBITDA no longer adjusts for start-up losses and investment in new services as the Chief Operating Decision Maker (“CODM”) no longer reviews the Segment Adjusted EBITDA measure without these costs. The CODM does not review segment assets as a measure of segment performance.

During the first quarter of 2023, the Company determined to sell one of its specialty service lines within the lab testing business (the "Discontinuing Specialty Lab"), whose performance has been sporadic and whose service offering is non-core to the Company’s business. The Company expects the sale process to be completed by December 31, 2023. The discontinuation of this specialty service line, which is part of the Company's Measurement and Analysis segment, did not represent a strategic shift that had (or will have) a major effect on the Company’s operations and financial results, therefore it did not meet the requirements to be classified as discontinued operations.

Corporate and Other includes costs associated with general corporate overhead (including executive, legal, finance, safety, human resources, marketing and IT related costs) that are not directly related to supporting operations. Overhead costs that are directly related to supporting operations (such as insurance, software, licenses, shared services and payroll processing costs) are allocated to the operating segments on a basis that reasonably approximates an estimate of the use of these services.

Segment revenues and Adjusted EBITDA consisted of the following:

|  | Three Months Ended June 30, |  |
|  | 2023 |  |  | 2022 |  |
|  |  |  |  | Segment |  |  |  |  |  | Segment |  |
|  | Segment |  |  | Adjusted |  |  | Segment |  |  | Adjusted |  |
|  | Revenues |  |  | EBITDA |  |  | Revenues |  |  | EBITDA(4) |  |
Assessment, Permitting and Response |  | $ | 61,411 |  |  | $ | 13,833 |  |  | $ | 50,037 |  |  | $ | 10,809 |  |
Measurement and Analysis |  |  | 50,055 |  | (1) |  | 10,789 |  |  |  | 42,224 |  | (1) |  | 7,047 |  | (3)
Remediation and Reuse |  |  | 47,635 |  |  |  | 6,043 |  |  |  | 47,649 |  |  |  | 7,056 |  |
Total Operating Segments |  |  | 159,101 |  |  |  | 30,665 |  |  |  | 139,910 |  |  |  | 24,912 |  |
Corporate and Other |  |  | — |  |  |  | (9,474 | ) |  |  | — |  |  |  | (8,399 | ) |
Total |  | $ | 159,101 |  |  | $ | 21,191 |  |  | $ | 139,910 |  |  | $ | 16,513 |  |
|  | Six Months Ended June 30, |  |
|  | 2023 |  |  | 2022 |  |
|  |  |  |  | Segment |  |  |  |  |  | Segment |  |
|  | Segment |  |  | Adjusted |  |  | Segment |  |  | Adjusted |  |
|  | Revenues |  |  | EBITDA |  |  | Revenues |  |  | EBITDA(4) |  |
Assessment, Permitting and Response |  | $ | 113,625 |  |  | $ | 28,099 |  |  | $ | 95,637 |  |  | $ | 20,432 |  |
Measurement and Analysis |  |  | 92,582 |  | (2) |  | 17,176 |  |  |  | 81,985 |  | (2) |  | 13,369 |  | (3)
Remediation and Reuse |  |  | 84,322 |  |  |  | 11,321 |  |  |  | 96,968 |  |  |  | 15,049 |  |
Total Operating Segments |  |  | 290,529 |  |  |  | 56,596 |  |  |  | 274,590 |  |  |  | 48,850 |  |
Corporate and Other |  |  | — |  |  |  | (18,802 | ) |  |  | — |  |  |  | (15,886 | ) |
Total |  | $ | 290,529 |  |  | $ | 37,794 |  |  | $ | 274,590 |  |  | $ | 32,964 |  |

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_____________________________________

(1) Includes revenue of $2.4 million and $3.4 million from the Discontinuing Specialty Lab, for the three months ended June 30, 2023 and June 30, 2022, respectively.

(2) Includes revenue of $3.9 million and $9.0 million from the Discontinuing Specialty Lab, for the six months ended June 30, 2023 and June 30, 2022, respectively.
(3) Includes Adjusted EBITDA loss of $(0.9) million and Adjusted EBITDA of $0.4 million from the Discontinuing Specialty Lab for the three and six months ended June 30, 2022, respectively.

(4) Includes the add back of start-up losses and investment in new services of $0.9 million and $1.7 million for the three and six months ended June 30, 2022, respectively .

Presented below is a reconciliation of the Company’s segment measure to net loss:

|  | For the Three Months Ended June 30, |  |  | For the Six Months Ended June 30, |  |
|  | 2023 |  |  | 2022 |  |  | 2023 |  |  | 2022 |  |
Total |  | $ | 21,191 |  |  | $ | 16,513 |  |  | $ | 37,794 |  |  | $ | 32,964 |  |
Interest expense, net |  |  | (1,877 | ) |  |  | (1,518 | ) |  |  | (3,418 | ) |  |  | (2,610 | ) |
Income tax expense |  |  | (151 | ) |  |  | (831 | ) |  |  | (1,518 | ) |  |  | (2,100 | ) |
Depreciation and amortization |  |  | (11,398 | ) |  |  | (12,280 | ) |  |  | (21,953 | ) |  |  | (24,424 | ) |
Stock-based compensation |  |  | (11,090 | ) |  |  | (10,932 | ) |  |  | (24,125 | ) |  |  | (21,357 | ) |
Start-up losses and investment in new services |  |  | — |  |  |  | (885 | ) |  |  | — |  |  |  | (1,671 | ) |
Acquisition costs |  |  | (2,696 | ) |  |  | (519 | ) |  |  | (3,471 | ) |  |  | (986 | ) |
Fair value changes in financial instruments |  |  | 865 |  |  |  | 407 |  |  |  | (1,008 | ) |  |  | 2,856 |  |
Fair value changes in business acquisition contingencies |  |  | (353 | ) |  |  | 3,510 |  |  |  | 45 |  |  |  | 3,531 |  |
Expenses related to financing transactions |  |  | — |  |  |  | — |  |  |  | (4 | ) |  |  | (7 | ) |
Discontinuing Specialty Lab |  |  | (1,583 | ) | (1) |  | — |  |  |  | (4,019 | ) | (1) |  | — |  |
Other losses or expenses |  |  | (82 | ) |  |  | (1,216 | ) | (2) |  | (216 | ) |  |  | (1,483 | ) | (2)
Net loss |  | $ | (7,174 | ) |  | $ | (7,751 | ) |  | $ | (21,893 | ) |  | $ | (15,287 | ) |

__________________________

(1) Amounts consist of operating losses before depreciation related to the Discontinuing Specialty Lab.

(2) Amounts include costs associated with the closing of a lab.

19. RELATED-PARTY TRANSACTIONS

The Company did no t have any related party transactions during the three and six months ended June 30, 2023 and June 30, 2022.

20. DEFINED CONTRIBUTION PLAN

On January 1, 2014, the Company established the Montrose Environmental Group 401(k) Savings Plan (the “401(k) Savings Plan”). As of June 30, 2023, and December 31, 2022, plan participants may defer up to 85.0% of their eligible wages for the year, up to the Internal Revenue Service dollar limit and catch-up contribution allowed by law. The Company provided employer matching contributions equal to 100.0% of the first 3.0% of the participant’s compensation and 50.0% of the participant’s elective deferrals that exceed 3.0% but do not exceed 5.0% of the participant’s compensation. Employer contributions under the 401(k) Savings Plan were $1.8 million and $3.9 million for the three and six months ended June 30, 2023, respectively, and $1.7 million and $3.4 million for the three and six months ended June 30, 2022, respectively, and are included within selling, general, and administrative expense on the unaudited condensed consolidated statements of operations.

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21. SUBSEQUENT EVENTS

Business Acquisitions—On July 31, 2023, the Company completed the business acquisition of Vandrensning.com ApS (“Vandrensning”) by acquiring 100.0% of its common stock. Vandrensning provides water treatment services, and is based in Denmark.

This transaction qualifies as a business acquisition and will be accounted for as a business combination. The following table summarizes the main elements of the purchase price of the acquisition:

|  | Cash(1)(2) |  |  | Other Purchase Price Obligations(2) |  |  | Contingent Earn-Out(2) |  |  | Purchase Price(2) |
Vandrensning |  | $ | 3,267 |  |  | $ | 363 |  |  | $ | 1,100 |  |  | $ | 4,730 |

_________________________________________
(1) The cash portion of this acquisition's purchase price was funded through cash on hand.

(2) Amounts have been translated from Euros to U.S. Dollars by using the July 31, 2023 exchange rate.

33

FORWARD-LOOKING STATEMENTS

This Quarterly Report on Form 10-Q contains “forward-looking statements” within the meaning of Section 27A of the Securities Act of 1933, as amended, or the Securities Act, and Section 21E of the Securities Exchange Act of 1934, as amended, or the Exchange Act. These forward-looking statements relate to matters such as our industry, business strategy, goals and expectations concerning our market position, future operations, margins, profitability, capital expenditures, liquidity, capital resources and other financial and operating information. We use words such as “anticipate,” “assume,” “believe,” “contemplate,” “continue,” “could,” “estimate,” “expect,” “future,” “intend,” “may,” “plan,” “position,” “potential,” “predict,” “project,” “seek,” “should,” “target,” “will” and similar terms and phrases to identify forward-looking statements in this filing. All of our forward-looking statements are subject to risks and uncertainties that may cause actual results to differ materially from those that we are expecting, including:

•
our history of losses and ability to achieve profitability;
•
general global economic, business and other conditions, including inflationary pressures and rising interest rates, the cyclical nature of our industry and the significant fluctuations in events that impact our business;
•
the parts of our business that depend on difficult to predict natural or manmade events and the fluctuations in our revenue and customer concentration as a result thereof;
•
the highly competitive nature of our business;
•
our limited operating history;
•
our ability to execute on our acquisition strategy and successfully integrate and realize benefits from our acquisitions;
•
any failure in or breach of our networks and systems or other forms of cyber-attack;
•
our ability to promote and develop our brands;
•
our ability to maintain and expand our client base;
•
our ability to maintain necessary accreditations and other authorizations in varying jurisdictions;
•
significant environmental governmental regulation and liabilities;
•
our ability to attract and retain qualified managerial and skilled technical personnel;
•
safety-related issues;
•
the impact of the COVID-19 pandemic on our business operations and on local, national and global economies;
•
allegations regarding compliance with professional standards, duties and statutory obligations and our ability to provide accurate results;
•
the lack of formal long-term agreements with many of our clients;
•
our ability to adapt to changing technology, industry standards or regulatory requirements, including emerging environmental, social and governance requirements;
•
government clients and contracts, and the prospect of a shutdown of the U.S. federal government;
•
our ability to maintain our prices and manage costs;
•
our ability to protect our intellectual property or claims that we infringe on the intellectual property rights of others;
•
laws and regulations regarding handling of confidential information;
•
our international operations;
•
product related risks; and
•
additional factors discussed in our filings with the Securities and Exchange Commission, or the SEC.

34

The forward-looking statements in this Quarterly Report on Form 10-Q are based on historical performance and management’s current plans, estimates and expectations in light of information currently available to us and are subject to uncertainty and changes in circumstances. There can be no assurance that future developments affecting us will be those that we have anticipated. Actual results or outcomes may differ materially from these expectations due to changes in global, regional or local political, economic, business, competitive, market, regulatory and other factors, many of which are beyond our control, as well as the other factors described in Item 1A. “Risk Factors” in our Annual Report on Form 10-K for the year ended December 31, 2022 filed with the SEC on March 1, 2023, or the 2022 Form 10-K.

Additional factors or events that could cause our actual results or outcomes to differ may also emerge from time to time, and it is not possible for us to predict all of them. In addition, historical, current and forward-looking sustainability-related statements may be based on standards for measuring progress that are still developing, internal controls and processes that continue to evolve, and assumptions that are subject to change in the future. Should one or more of these risks or uncertainties materialize, or should any of our assumptions prove to be incorrect, our actual results or outcomes may vary in material respects from what we may have expressed or implied by any forward-looking statement and, therefore, you should not regard any forward-looking statement as a representation or warranty by us or any other person that we will successfully achieve the expectation, plan or objective expressed in such forward-looking statement in any specified time frame, or at all. We caution that you should not place undue reliance on any of our forward-looking statements. Any forward-looking statement made by us speaks only as of the date on which we make it. We undertake no obligation to publicly update any forward-looking statement, whether as a result of new information, future developments or otherwise, except as may be required by applicable securities laws.

35

Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations.

The following discussion and analysis of our financial condition and results of operations should be read in conjunction with our historical audited and unaudited consolidated financial statements and related notes and other information included elsewhere in this filing and our other filings with the SEC, including our unaudited condensed consolidated financial statements and the accompanying notes as of and for the three and six months ended June 30, 2023 and June 30, 2022 included in Part I, Item 1. “Financial Statements” in this Quarterly Report on Form 10-Q. This discussion contains forward-looking statements that involve risks and uncertainties. Our actual results could differ materially from such forward-looking statements. Factors that could cause or contribute to those differences include, but are not limited to, those identified below and those discussed in the section entitled “Forward-Looking Statements”, and elsewhere in this filing and our other filings with the SEC, including in Item 1A. Risk Factors in the 2022 Form 10-K.

Overview

Since our inception in 2012, our mission has been to help clients and communities meet their environmental goals and needs. According to data derived from a 2022 Environmental Industry Study prepared by Environmental Business International, Inc., or EBI, which we commissioned, the global environmental industry is estimated to be approximately $1.34 trillion, with $444.0 billion concentrated in the United States.

Our Segments

We provide environmental services to our clients through three business segments—Assessment, Permitting and Response, Measurement and Analysis and Remediation and Reuse. For more information on each of our operating segments, see Item 1. “Business” in the 2022 Form 10-K.

Assessment, Permitting and Response

Through our Assessment, Permitting and Response segment, we primarily provide scientific advisory and consulting services to support environmental assessments, environmental emergency response, and environmental audits and permits for current operations, facility upgrades, new projects, decommissioning projects and development projects. Our technical advisory and consulting offerings include regulatory compliance support and planning, environmental, ecosystem and toxicological assessments and support during responses to environmental disruption. We help clients navigate regulations at the local, state, provincial and federal levels.

Measurement and Analysis

Through our Measurement and Analysis segment, our highly credentialed teams test and analyze air, water and soil to determine concentrations of contaminants, as well as the toxicological impact of contaminants on flora, fauna and human health. Our offerings include source and ambient air testing and monitoring, leak detection and advanced analytical laboratory services such as air, storm water, wastewater and drinking water analysis.

Remediation and Reuse

Through our Remediation and Reuse segment, we provide clients with engineering, design, and implementation services, primarily to treat contaminated water, remove contaminants from soil or create biogas from waste. We do not own the properties or facilities at which we implement these projects or the underlying liabilities, nor do we own material amounts of the equipment used in projects; instead, we assist our clients in designing solutions, managing projects and mitigating their environmental risks and liabilities.

These operating segments have been structured and organized to align with how we view and manage the business with the full lifecycle of our clients’ targeted environmental concerns and needs in mind. Within each segment, we cover similar service offerings, regulatory frameworks, internal operating structures and client types. Corporate activities not directly related to segment performance, including general corporate expenses, interest and taxes, are reported separately.

Key Factors that Affect Our Business and Our Results

Our operating results and financial performance are influenced by a variety of internal and external trends and other factors. Some of the more important factors are discussed briefly below.

36

Acquisitions

We have been, and expect to continue to be, an acquisitive company. Acquisitions have expanded our environmental service capabilities across all three segments, our access to technology, as well as our geographic reach in the United States, Canada and Australia. The table below sets forth the number of acquisitions completed, revenues generated by and the percentage of total revenues attributable to those acquisitions completed during the three and six months ended June 30, 2023 and June 30, 2022:

|  | Three Months Ended June 30, |  |  | Six Months Ended June 30, |
(Revenues in thousands) |  | 2023 |  |  | 2022(1) |  |  | 2023 |  |  | 2022 |
Acquisitions completed |  |  | 2 |  |  |  | — |  |  |  | 4 |  |  | 2 |
Revenues attributable to acquisitions completed in the relevant period |  | $ | 10,617 |  |  | $ | — |  |  | $ | 11,585 |  |  | $ | 7,600 |
Percentage of revenues |  |  | 6.7 | % |  |  | 0.0 | % |  |  | 4.0 | % |  |  | 2.8 | %

_________________________________

(1)
Acquisitions revenue amounts in Note 7 to our unaudited condensed consolidated financial statements included in Part I, Item 1. “Financial Statements” includes second quarter revenue from acquisitions completed in the first quarter, whereas this disclosure only considers revenue attributable to the acquisitions acquired during the three months ended June 30, 2022.

Revenues from acquired companies exclude intercompany revenues from revenue synergies realized between business lines within operating segments, as these are eliminated at the consolidated segment and Company level. We expect our revenue growth to continue to be driven in significant part by acquisitions. See Note 7 to our unaudited condensed consolidated financial statements included in Part I, Item 1. “Financial Statements.”

As a result of our acquisitions, goodwill and other intangible assets represent a significant proportion of our total assets, and amortization of intangible assets has historically been a significant expense. Our historical financial statements also include other acquisition-related costs, including costs relating to external legal support, diligence and valuation services and other transaction and integration-related matters. In addition, in any year gains and losses from changes in the fair value of business acquisition contingencies such as earn outs could be significant. The amount of each for the three and six months ended June 30, 2023 and June 30, 2022, was:

|  | Three Months Ended June 30, |  |  | Six Months Ended June 30, |
(in thousands) |  | 2023 |  |  | 2022 |  |  | 2023 |  |  | 2022 |
Amortization expense |  | $ | 7,350 |  |  | $ | 9,492 |  |  | $ | 14,590 |  |  | $ | 18,911 |
Acquisition-related costs |  |  | 2,696 |  |  |  | 519 |  |  |  | 3,471 |  |  |  | 986 |
Fair value changes in business acquisition contingencies |  |  | 353 |  |  |  | (3,510 | ) |  |  | (45 | ) |  |  | (3,531 | )

We expect that amortization of identifiable intangible assets and other acquisition-related costs, assuming we continue to acquire, will continue to be significant.

Additionally, we made earn-out payments of $30.0 million in March 2022 in connection with our CTEH acquisition. In connection with our Vista, Sensible, Huco and EAI acquisitions, we may make up to $7.7 million in aggregate earn-out payments between the years 2023 and 2026, of which up to $0.8 million may be paid only in cash, up to $5.5 million may be paid only in common stock and up to $1.5 million may be paid, at our option, in cash or common stock. See Note 7 to our unaudited condensed consolidated financial statements included in Part I, Item 1. “Financial Statements.”

COVID-19

To date, COVID-19 related adverse impacts such as temporarily delayed project start dates, particularly within our Remediation and Reuse segment, exiting certain service lines and employee quarantines have not had a material adverse effect on our reported results or our liquidity. On the other hand, we have seen benefits from COVID-19 given client demand for CTEH’s toxicology and response services, which represented a meaningful revenue stream, particularly in the year ended December 31, 2021 and, to a lesser extent, in 2022. COVID-19 revenues have continued to rapidly decline as the pandemic has subsided, which we may not be able to replace in future periods. Although many parts of our business saw some impact from COVID-19, in the aggregate, our overall business benefitted very slightly from COVID-19 during the three and six months ended June 30, 2023 and more materially during the three and six months ended and June 30, 2022, primarily as a result of COVID-19 response work performed by CTEH. COVID-19 has had an impact on our historical seasonality trends.

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Organic Growth

We define organic growth as the change in revenues excluding revenues from i) our CTEH environmental emergency and/or disaster response business, ii) acquisitions for the first twelve months following the date of acquisition, and iii) businesses held for sale, disposed of or discontinued. As a result of the potential annual volatility in CTEH’s revenues due to the emergency response aspect of their business, we will no longer be including CTEH revenues in the calculation of organic growth. Management uses organic growth as one of the means by which it assesses our results of operations. Organic growth is not, however, a measure of revenue growth calculated in accordance with U.S. generally accepted accounting principles, or GAAP, and should be considered in conjunction with revenue growth calculated in accordance with GAAP. We have grown organically over the long term and expect to continue to do so.

Discontinued Operations

Periodically, or when circumstances warrant, we evaluate the performance of our business services to ensure that performance and outlook are consistent with expectations, and that the services offered are consistent with the Company’s mission.

As part of this evaluation, during the first quarter of 2023, we determined to sell one of our specialty lab testing businesses, the Discontinuing Specialty Lab, whose service offering is non-core to the Company’s business. The Discontinuing Specialty Lab, which is part of our Measurement and Analysis segment, generated revenues of $2.4 million and $3.9 million in the three and six months ended June 30, 2023, respectively, and $3.4 million and $9.0 million in the three and six months ended June 30, 2022, respectively. We expect the sale process to be completed prior to December 31, 2023. The discontinuation of this specialty service line did not represent a strategic shift that had (or will have) a major effect on the Company’s operations and financial results, therefore it did not meet the requirements to be classified as discontinued operations.

During the fourth quarter of 2022, we determined to exit our lab in Berkley, California and terminate the related positions. This discontinued start-up, which was included in our Measurement and Analysis segment, did not generate any material revenue during the three and six months ended June 30, 2022.

During the second quarter of 2022, we determined to exit all legacy water treatment and biogas operations and maintenance contracts, collectively, the Discontinued O&M Contracts, as well as the related positions. The work associated with these contracts is non-specialized and commoditized, and it was determined that the risk of facility failure taken on by the Company as the O&M contractor no longer justified the low margins in these contracts. Revenue from our water treatment and biogas operations and maintenance contracts, which were included in the results of our Remediation and Reuse segment, were $0.9 million and $ 2.3 million in the three and six months ended June 30, 2022. This decision did not impact the Company’s specialized PFAS water treatment operations and maintenance contracts.

Revenue Mix

Our segments generate different levels of profitability and, accordingly, shifts in the mix of revenues between segments can impact our consolidated reported net income, net loss margin, Segment Adjusted EBITDA and Segment Adjusted EBITDA margin from quarter to quarter and year to year. Inter-company revenues between business lines within segments have been eliminated. See Note 18 to our unaudited condensed consolidated financial statements included in Part 1, Item 1 “Financial Statements.”

Financing Costs

On April 27, 2021, we entered into the 2021 Credit Facility and repaid all amounts outstanding under our prior credit facility. The 2021 Credit Facility consists of a $175.0 million term loan and a $125.0 million revolving credit facility. The revolving credit facility includes a $20.0 million sublimit for the issuance of letters of credit. Prior to May 31, 2023, the interest rate on the 2021 Credit Facility varied depending on leverage, with a minimum of LIBOR plus 1.5% and a maximum of LIBOR plus 2.5%. On May 31, 2023, we amended our 2021 Credit Facility to transition the reference rate from LIBOR to SOFR. The transition to SOFR did not materially impact the interest rate we pay or change any material terms of the 2021 Credit Facility.

On May 30, 2023, we amended the interest rate swap transaction we entered into on January 27, 2022, to convert the floating component of the interest rate on $100.0 million of borrowings to 1-Month Term SOFR and a new coupon of 1.319% until January 27, 2025. Prior to the amendment, the floating component of the interest rate was 1.39%. Further, on May 30, 2023, we entered into a second interest rate swap transaction fixing the floating component of the interest rate on an additional $70.0 million of borrowings to 1-Month Term SOFR and a coupon of 3.88% until April 27, 2026.

Interest expense, net was $1.9 million and $3.4 million in the three and six months ended June 30, 2023, respectively, and $1.5 million and $2.6 million in the three and six months ended June 30, 2022, respectively. We expect interest expense to remain a significant cost as we continue to leverage our credit facility to support our operations and future acquisitions.

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See Note 12 to our unaudited condensed consolidated financial statements included in Part 1, Item 1 “Financial Statements” and “Liquidity and Capital Resources.”

Corporate and Operational Infrastructure Investments

Our historical operating results reflect the impact of our ongoing investments in our corporate infrastructure to support our growth. We have made and expect to continue to make investments in our business platform that we believe have laid the foundation for continued growth. Investments in logistics, quality, risk management, sales and marketing, safety, human resources, research and development, finance and information technology and other areas enable us to support continued growth. These investments should allow us to improve our margins over time.

Seasonality

Due to the field-based nature of certain of our services, weather patterns generally impact our field-based teams’ ability to operate in the winter months. As a result, our operating results in our Measurement and Analysis and, following the acquisition of Matrix in Canada, the Remediation and Reuse segment, experience some quarterly variability with generally lower revenues and lower earnings in the first and fourth quarters and higher overall revenues and earnings in the second and third quarters. As we continue to grow and expand into new geographies and service lines, quarterly variability in our Measurement and Analysis and Remediation and Reuse segments may deviate from historical trends.

Earnings Volatility

In addition to the impact of seasonality on earnings, the acquisition of CTEH exposes us to potentially significant revenue and earnings fluctuations tied both to the timing of large environmental emergency response projects following an incident or natural disaster, and the benefit from COVID-19 related work. The benefit from COVID-19 related work peaked in the quarter ended March 31, 2021 and has declined in each subsequent quarter. COVID-19 related revenue was $1.0 million and $4.8 million in the three and six months ended June 30, 2023, respectively, and $20.4 million and $41.8 million in the three and six months ended June 30, 2022, respectively. We have also seen significant revenue in the first half of 2023 from emergency response services related to a discrete event. Demand for environmental emergency response provided by CTEH remains difficult to predict and as a result, we may have experienced revenues and earnings in prior years that are not indicative of future results, making those periods particularly difficult comparisons for future periods. We do however expect that, looking forward, and as has been the case through June 30, 2023, declining COVID-19 response revenues as compared to prior year periods will continue to be offset by other CTEH service line revenues, such as environmental emergency responses. Earnings volatility is also driven by the timing of large projects, particularly in our Remediation and Reuse segment, and the impact of acquisitions. As a result of these factors, and because demand for environmental services is not driven by specific or predictable patterns in one or more fiscal quarters, our business is better assessed based on yearly results.

Cybersecurity

As previously disclosed, on June 11, 2022 we were the target of an organized ransomware attack on our IT systems that led to the temporary disruption of our regular operations. The Company's financial systems are cloud based and were not affected. We engaged third party experts, including cyber legal counsel and a cybersecurity firm, to perform a fulsome forensic investigation of this attack and we promptly notified federal law enforcement. Based on the results of the investigation, we do not believe there has been any misuse of confidential or sensitive client data, have made notifications to clients, and have proactively addressed client concerns regarding our security environment. Furthermore, we have identified a limited number of individuals whose personally identifiable information may have been accessed from our systems and have made appropriate notifications to such individuals and required regulators. The Company has insurance coverage, subject to a $0.3 million deductible, against recovery costs and business interruption resulting from cyber-attacks. In January 2023, the Company received $1.0 million in business interruption insurance proceeds related to the cyber-attack. These proceeds partially offset the estimated $1.5 million cost of the cyber-attack recognized in the second and third quarter of 2022.

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Results of Operations

Three Months Ended June 30, 2023 Compared to the Three Months Ended June 30, 2022

|  | Three Months Ended June 30, |
(in thousands, except per share data) |  | 2023 |  |  | 2022 |
Statements of operations data: |  |  |  |  |  |
Revenues |  | $ | 159,101 |  |  | $ | 139,910 |
Cost of revenues (exclusive of depreciation and amortization) |  |  | 98,196 |  |  |  | 90,429 |
Selling, general and administrative expense |  |  | 55,247 |  |  |  | 46,456 |
Fair value changes in business acquisition contingencies |  |  | 353 |  |  |  | (3,510 | )
Depreciation and amortization |  |  | 11,398 |  |  |  | 12,280 |
Loss from operations |  | $ | (6,093 | ) |  | $ | (5,745 | )
Other income, net |  |  | 947 |  |  |  | 343 |
Interest expense, net |  |  | (1,877 | ) |  |  | (1,518 | )
Loss before income taxes |  |  | (7,023 | ) |  |  | (6,920 | )
Income tax expense |  |  | 151 |  |  |  | 831 |
Net loss |  | $ | (7,174 | ) |  | $ | (7,751 | )
Series A-2 dividend payment |  |  | (4,100 | ) |  |  | (4,100 | )
Net loss attributable to common stockholders |  | $ | (11,274 | ) |  | $ | (11,851 | )
Weighted average number of shares — basic and diluted |  |  | 30,047 |  |  |  | 29,678 |
Loss per share — basic and diluted |  | $ | (0.38 | ) |  | $ | (0.40 | )

Revenues

For the three months ended June 30, 2023, we generated revenues of $159.1 million, an increase of $19.2 million, or 13.7% over the three months ended June 30, 2022. The period over period increase in revenues was primarily driven by organic growth in our Assessment, Permitting and Response and Measurement and Analysis segments, an increase in CTEH revenues, and acquisitions completed subsequent to the quarter ended June 30, 2022, which contributed revenues of $13.6 million. These increases were partially offset by lower revenues in the Discontinuing Specialty Lab, the exiting of the Discontinued O&M Contracts, and the timing of projects in our Remediation and Reuse segment. Revenue from CTEH was $38.5 million in the three months ended June 30, 2023 compared to $32.1 million in the three months ended June 30, 2022. Total revenue from COVID-19 related services was $1.0 million and $20.4 million in the three months ended June 30, 2023 and June 30, 2022, respectively. Revenue from the Discontinuing Specialty Lab was $2.4 million and $3.4 million in the three months ended June 30, 2023 and June 30, 2022, respectively. The Discontinued O&M Contracts generated revenues of zero and $0.9 million in the three months ended June 30, 2023 and June 30, 2022, respectively. Revenue by segment and as a percentage of total revenues was as follows:

|  | Three Months Ended June 30,
|  | 2023 |  | 2022
(Revenues in thousands) |  | Revenues |  |  | % of Total Revenues |  | Revenues |  |  | % of Total Revenues
Assessment, Permitting and Response |  | $ |  | 61,411 |  |  |  | 38.6 |  | % |  | $ |  | 50,037 |  |  |  | 35.8 |  | %
Measurement and Analysis(1) |  |  |  | 50,055 |  |  |  | 31.5 |  |  |  |  |  | 42,224 |  |  |  | 30.2 |  |
Remediation and Reuse |  |  |  | 47,635 |  |  |  | 29.9 |  |  |  |  |  | 47,649 |  |  |  | 34.1 |  |
Total |  | $ |  | 159,101 |  |  |  |  |  |  | $ |  | 139,910 |  |  |  |  |

_________________________________

(1)
Includes revenue of $2.4 million and $3.4 million from the Discontinuing Specialty Lab for the three months ended June 30, 2023 and June 30, 2022, respectively. See “—Discontinued Operations” above.

See “—Segment Results of Operations” below.

Cost of Revenues

Cost of revenues consists of all direct costs required to provide services, including fixed and variable direct labor costs, equipment purchases and rental, and other outside services, field and lab supplies, vehicle costs and travel-related expenses. Variable costs of revenues generally follow the same trends as revenue, while fixed costs tend to change primarily as a result of acquisitions.

For the three months ended June 30, 2023, cost of revenues was $98.2 million or 61.7% of revenues, and was comprised of direct labor of $46.0 million, outside services (including contracted labor, laboratory, shipping and freight and other outside services) of $25.6 million, field

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supplies, testing supplies and equipment costs of $18.8 million, project-related travel expenses of $5.9 million and other direct costs of $1.9 million.

For the three months ended June 30, 2022, cost of revenues was $90.4 million or 64.6% of revenues, and was comprised of direct labor of $37.2 million, outside services (including contracted labor, laboratory, shipping and freight and other outside services) of $22.7 million, field supplies, testing supplies and equipment costs of $21.3 million, project-related travel expenses of $5.4 million and other direct costs of $3.8 million.

For the three months ended June 30, 2023, cost of revenues as a percentage of revenue decreased 2.9% from the three months ended June 30, 2022, primarily as a result of a $2.5 million decrease in field and testing supplies and equipment costs due to a decline in the percentage of total revenue from certain large Remediation and Reuse projects and a $1.6 million decrease in direct labor attributable to a shift in roles and responsibilities as described under the Selling, General and Administrative Expense section below, partially offset by an increase of $8.4 million from cost of revenues pertaining to companies we acquired subsequent to the second quarter of 2022, as well as by an increase of $2.0 million in direct labor when compared to the prior year period, primarily driven by merit increases.

Selling, General and Administrative Expense

Selling, general and administrative expense consists of general corporate overhead, including executive, legal, finance, safety, risk management, human resource, marketing and information technology related costs, as well as indirect operational costs of labor, rent, insurance and stock-based compensation.

For the three months ended June 30, 2023, selling, general and administrative expense was $55.2 million, an increase of $8.7 million or 18.9% when compared to the three months ended June 30, 2022. This increase was primarily driven by an increase of approximately $3.6 million from selling, general and administrative expense pertaining to companies we acquired subsequent to the second quarter of 2022, an increase in acquisition-related costs of $2.2 million, as well as an increase of $1.6 million related to the impact of the shift of employee roles and responsibilities of certain employees from providing direct field support (and therefore included in cost of revenues in 2022), to providing more specialized, multi-location overhead support functions (such as accounting, HR and management) and therefore included in selling general and administrative expenses in the current year. The shift in the employee roles and responsibilities was driven by acquisitions and growth in our business. The increase was also driven by higher labor and medical benefit costs, primarily reflecting inflationary increases, and $1.1 million related to an increase in bad debt expense. See Part I, Item 3. “Quantitative and Qualitative Disclosures About Market Risk” for additional information regarding the impact of inflation on our business.

For the three months ended June 30, 2023, selling, general and administrative expense of $55.2 million was comprised of indirect labor of $27.0 million, stock-based compensation of $10.4 million, facilities costs of $5.6 million, acquisition-related costs of $2.7 million, bad debt expense of $1.4 million, and other costs (including software, travel, insurance, legal, consulting and audit services) of $8.1 million.

For the three months ended June 30, 2022, selling, general and administrative expense of $46.5 million was comprised of indirect labor of $21.7 million, stock-based compensation of $10.6 million, facilities costs of $4.3 million, acquisition-related costs of $0.5 million, bad debt expense of $0.3 million, and other costs (including software, travel, insurance, legal, consulting and audit services) of $9.1 million.

Fair Value Changes in Business Acquisition Contingencies

For the three months ended June 30, 2023, fair value changes in business acquisition contingencies resulted in an expense of $0.4 million. For the three months ended June 30, 2022, fair value changes in business acquisition contingencies resulted in a gain of $3.5 million.

See “—Key Factors that Affect Our Business and Our Results—Acquisitions” and Notes 7 and 13 to our unaudited condensed consolidated financial statements included in Part I, Item 1. “Financial Statements.”

Depreciation and Amortization

Depreciation and amortization expense for the three months ended June 30, 2023, was $11.4 million and was comprised of amortization of finite lived intangibles of $7.4 million, arising as a result of our acquisition activity, depreciation of property and equipment of $2.6 million and finance leases right-of-use asset amortization of $1.4 million.

Depreciation and amortization expense for the three months ended June 30, 2022, was $12.3 million and was comprised of amortization of finite lived intangibles of $9.5 million, arising as a result of our acquisition activity, depreciation of property and equipment of $1.8 million and finance leases right-of-use asset amortization of $1.0 million.

The decrease in amortization was primarily a result of lower unamortized intangible assets outstanding during the three months ended June 30, 2023 when compared to the three months ended June 30, 2022. The increases in depreciation of property and equipment and the

41

amortization of finance leases were primarily a result of higher property and equipment and right of use assets outstanding during the three months ended June 30, 2023 when compared to the three months ended June 30, 2022. See Notes 5 and 6 to our unaudited condensed consolidated financial statements included in Part 1, Item 1. “Financial Statements.”

Other Income, Net

Other income for the three months ended June 30, 2023 of $0.9 million was driven by a benefit from the fair value adjustment on our interest rate swap of $1.4 million, partially offset by a charge related to the fair value adjustment to the Series A-2 preferred stock conversion option of $0.5 million.

Other income of $0.3 million for the three months ended June 30, 2022 was driven by a benefit from the fair value adjustment on our interest rate swap of $1.0 million, partially offset by a charge of $0.6 million related to the fair value adjustment of the Series A-2 preferred stock conversion option.

See Notes 13 and 15 to our unaudited condensed consolidated financial statements included in Part 1, Item 1. “Financial Statements.”

Interest Expense, Net

Interest expense, net incurred in the three months ended June 30, 2023, was $1.9 million, compared to $1.5 million for the three months ended June 30, 2022. The increase in interest expense was primarily due to higher interest rates and lower interest income as a result of lower average cash balances. Weighted average interest rates as of June 30, 2023 and June 30, 2022 were 6.3% and 2.2%, respectively. See “—Key Factors that Affect Our Business and Our Results—Financing Costs” and Notes 12 and 13 to our unaudited condensed consolidated financial statements included in Part I, Item 1. “Financial Statements.”

Income Tax Expense

Income tax expense was $0.2 million and $0.8 million during the three months ended June 30, 2023 and June 30, 2022, respectively.

Six Months Ended June 30, 2023 Compared to the Six Months Ended June 30, 2022

|  | Six Months Ended June 30, |
(in thousands, except per share data) |  | 2023 |  |  | 2022 |
Statements of operations data: |  |  |  |  |  |
Revenues |  | $ | 290,529 |  |  | $ | 274,590 |
Cost of revenues (exclusive of depreciation and amortization) |  |  | 179,829 |  |  |  | 178,815 |
Selling, general and administrative expense |  |  | 104,860 |  |  |  | 88,263 |
Fair value changes in business acquisition contingencies |  |  | (45 | ) |  |  | (3,531 | )
Depreciation and amortization |  |  | 21,953 |  |  |  | 24,424 |
Loss from operations |  | $ | (16,068 | ) |  | $ | (13,381 | )
Other (expense) income, net |  |  | (889 | ) |  |  | 2,804 |
Interest expense, net |  |  | (3,418 | ) |  |  | (2,610 | )
Loss before income taxes |  |  | (20,375 | ) |  |  | (13,187 | )
Income tax expense |  |  | 1,518 |  |  |  | 2,100 |
Net loss |  | $ | (21,893 | ) |  | $ | (15,287 | )
Series A-2 dividend payment |  |  | (8,200 | ) |  |  | (8,200 | )
Net loss attributable to common stockholders |  | $ | (30,093 | ) |  | $ | (23,487 | )
Weighted average number of shares— basic and diluted |  |  | 29,952 |  |  |  | 29,670 |
Loss per share— basic and diluted |  | $ | (1.00 | ) |  | $ | (0.79 | )

Revenues

For the six months ended June 30, 2023 we had revenues of $290.5 million, an increase of $15.9 million, or 5.8% over the six months ended June 30, 2022. The period over period increase in revenues was driven by organic growth in our Assessment, Permitting and Response and Measurement and Analysis segments, an increase in CTEH revenues, and acquisitions completed subsequent to the quarter ended June 30, 2022, which contributed revenues of $18.8 million. These increases were partially offset by lower revenues in the Discontinuing Specialty Lab, the exiting of Discontinued O&M Contracts, and the timing of projects in our Remediation and Reuse segment. Revenue from CTEH was $69.3 million in the six months ended June 30, 2023 compared to $62.0 million in the six months ended June 30, 2022. Total revenue from COVID-19 related services was $4.8 million and $41.8 million in the six months ended June 30, 2023 and June 30, 2022, respectively. Revenue from the Discontinuing Specialty Lab, was $3.9 million and $9.0 million in the six months ended June 30, 2023 and June 30, 2022, respectively. Revenue from Discontinued O&M Contracts generated revenues of zero and $2.3 million in the six months ended June 30, 2023 and June 30, 2022, respectively.

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Revenue by segment and as a percentage of total revenues was as follows:

|  | Six Months Ended June 30,
|  | 2023 |  | 2022
(Revenue in thousands) |  | Revenues |  |  | % of Total Revenues |  | Revenues |  |  | % of Total Revenues
Assessment, Permitting and Response |  | $ |  | 113,625 |  |  |  | 39.1 |  | % |  | $ |  | 95,637 |  |  |  | 34.8 |  | %
Measurement and Analysis(1) |  |  |  | 92,582 |  |  |  | 31.9 |  |  |  |  |  | 81,985 |  |  |  | 29.9 |  |
Remediation and Reuse |  |  |  | 84,322 |  |  |  | 29.0 |  |  |  |  |  | 96,968 |  |  |  | 35.3 |  |
|  | $ |  | 290,529 |  |  |  |  |  |  | $ |  | 274,590 |  |  |  |  |

_________________________________

(1)
Includes revenue of $3.9 million and $9.0 million from the Discontinuing Specialty Lab for the six months ended June 30, 2023 and June 30, 2022, respectively. See “—Discontinued Operations” above.

See “—Segment Results of Operations” below.

Cost of Revenues

For the six months ended June 30, 2023, cost of revenues was $179.8 million or 61.9% of revenues, and was comprised of direct labor of $88.6 million, outside services (including contracted labor, laboratory, shipping and freight and other outside services) of $41.6 million, field supplies, testing supplies and equipment costs of $32.3 million, project-related travel expenses of $10.7 million and other direct costs of $6.6 million.

For the six months ended June 30, 2022, cost of revenues was $178.8 million or 65.1% of revenues, and was comprised of direct labor of $76.0 million, field supplies, testing supplies and equipment costs of $43.1 million, outside services (including contracted labor, laboratory, shipping and freight and other outside services) of $41.8 million, project-related travel expenses of $9.4 million and other direct costs of $8.5 million.

For the six months ended June 30, 2023, cost of revenues as a percentage of revenue decreased 3.2% from the six months ended June 30, 2022, primarily as a result of a $10.8 million decrease in field and testing supplies and equipment rental costs due to a decline in the percentage of total revenue from certain large Remediation and Reuse projects and a decrease of $4.7 million in direct labor attributable to a shift in roles and responsibilities as described under the Selling, General and Administrative Expense section below, partially offset by $10.8 million of cost of revenues pertaining to companies we acquired subsequent to the second quarter of 2022, as well as by an increase of $6.5 million in direct labor when compared to the prior year period, primarily driven by merit increases.

Selling, General and Administrative Expense

For the six months ended June 30, 2023, selling, general and administrative expense was $104.9 million, an increase of $16.6 million or 18.8% versus the six months ended June 30, 2022. This increase was primarily driven by an increase of approximately $4.7 million related to the impact of the shift of employee roles and responsibilities of certain employees from providing direct field support (and therefore included in cost of revenues in 2022), to providing more specialized, multi-location overhead support functions (such as accounting, HR and management) and therefore included in selling general and administrative expenses in the current year. This change was driven by acquisitions and growth in our business and by higher labor and medical benefit costs, primarily reflecting inflationary increases. The increase was also driven by $5.2 million from selling, general and administrative expense pertaining to companies we acquired subsequent to the second quarter of 2022, $2.0 million related to an increase in bad debt expense (which was a charge of $1.8 million in the current year, versus a credit of $(0.2) million in the prior year), an increase of $1.8 million in stock-based compensation expense, $0.6 million related to an increase in the defined contribution plan, and the timing of certain external expenditures, which occurred later in the year in 2022. See Part I, Item 3. “Quantitative and Qualitative Disclosures About Market Risk” for additional information regarding the impact of inflation on our business.

For the six months ended June 30, 2023, selling, general and administrative expense of $104.9 million was comprised of indirect labor of $51.7 million, stock-based compensation of $22.5 million, facilities costs of $10.5 million, acquisition-related costs of $3.5 million, bad debt expense of $1.8 million, and other costs (including software, travel, insurance, legal, consulting and audit services) of $14.9 million.

For the six months ended June 30, 2022, selling, general and administrative expense of $88.3 million was comprised of indirect labor of $41.2 million, stock-based compensation of $20.7 million, facilities costs of $8.7 million, acquisition-related costs of $1.0 million, a bad debt credit of $0.2 million, and other costs (including software, travel, insurance, legal, consulting and audit services) of $16.9 million.

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Fair Value Changes in Business Acquisition Contingencies

Fair value changes in business acquisition contingencies during the six months ended June 30, 2023, were not material.

For the six months ended June 30, 2022, fair value changes in business acquisition contingencies resulted in a gain of $3.5 million. The majority of the change in value in the six months ended June 30, 2022, was attributable to a $3.1 million gain related to acquisitions' 338(h)(10) elections make-whole tax accruals.

See “—Key Factors that Affect Our Business and Our Results —Acquisitions” and Notes 7 and 13 to our unaudited condensed consolidated financial statements included in Part I, Item 1. “Financial Statements.”

Depreciation and Amortization

Depreciation and amortization expense for the six months ended June 30, 2023, was $22.0 million and was comprised of amortization of finite lived intangibles of $14.6 million, arising as a result of our acquisition activity, depreciation of property and equipment of $4.8 million and finance leases right-of-use asset amortization of $2.6 million.

Depreciation and amortization expense for the six months ended June 30, 2022, was $24.4 million and was comprised of amortization of finite lived intangibles of $18.9 million, arising as a result of our acquisition activity, depreciation of property and equipment of $3.6 million and finance leases right-of-use asset amortization of $1.9 million.

The decrease in amortization was primarily a result of lower unamortized intangible assets outstanding during the six months ended June 30, 2023 when compared to the six months ended June 30, 2022. The increases in depreciation of property and equipment and the amortization of finance leases were primarily a result of higher property and equipment and right of use assets outstanding during the six months

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ended June 30, 2023 when compared to the six months ended June 30, 2022. See Notes 5 and 6 to our unaudited condensed consolidated financial statements included in Part 1, Item 1. “Financial Statements.”

Other (Expense) Income, Net

Other expense for the six months ended June 30, 2023 of $0.9 million was driven by the fair value adjustment of the Series A-2 preferred stock conversion option of $1.4 million, partially offset by a $0.4 million gain related to the fair value adjustment on our interest rate swaps.

Other income for the six months ended June 30, 2022 of $2.8 million was driven by a gain related to the fair value adjustment on our interest rate swap of $4.0 million, which was partially offset by an expense of $1.1 million related to the fair value adjustment of the Series A-2 preferred stock conversion option.

See Notes 12 and 15 to our unaudited condensed consolidated financial statements included in Part 1, Item 1. “Financial Statements.”

Interest Expense, Net

Interest expense, net incurred in the six months ended June 30, 2023, was $3.4 million, compared to $2.6 million for the six months ended June 30, 2022. The increase in interest expense was primarily due to higher interest rates. Weighted average interest rates as of June 30, 2023 and June 30, 2022 were 6.3% and 2.2%, respectively. See “—Key Factors that Affect Our Business and Our Results—Financing Costs” and Notes 12 and 13 to our unaudited condensed consolidated financial statements included in Part I, Item 1. “Financial Statements.”

Income Tax Expense

Income tax expense was $1.5 million and $2.1 million during the six months ended June 30, 2023 and June 30, 2022, respectively.

Segment Results of Operations

Three Months Ended June 30, 2023 Compared to the Three Months Ended June 30, 2022

|  | Three Months Ended June 30, |  |
|  | 2023 |  |  | 2022 |  |
(in thousands, except percentages) |  | Segment Revenues |  |  | Segment Adjusted EBITDA (1) |  |  | Segment Adjusted EBITDA Margin(2) |  |  | Segment Revenues |  |  | Segment Adjusted EBITDA(1)(5) |  |  | Segment Adjusted EBITDA Margin(2)(5) |  |
Assessment, Permitting and Response |  | $ | 61,411 |  |  | $ | 13,833 |  |  |  | 22.5 |  | % | $ | 50,037 |  |  | $ | 10,809 |  |  |  | 21.6 |  | %
Measurement and Analysis |  |  | 50,055 |  | (3) |  | 10,789 |  |  |  | 21.6 |  |  |  | 42,224 |  | (3) |  | 7,047 |  | (4) |  | 16.7 |  |
Remediation and Reuse |  |  | 47,635 |  |  |  | 6,043 |  |  |  | 12.7 |  |  |  | 47,649 |  |  |  | 7,056 |  |  |  | 14.8 |  |
Total Operating Segments |  | $ | 159,101 |  |  | $ | 30,665 |  |  |  | 19.3 |  | % | $ | 139,910 |  |  | $ | 24,912 |  |  |  | 17.8 |  | %
Corporate and Other |  |  | — |  |  |  | (9,474 | ) |  | n/a |  |  |  | — |  |  |  | (8,399 | ) |  | n/a |  |

(1)
For purposes of evaluating segment profit, the Company’s chief operating decision maker reviews Segment Adjusted EBITDA as a basis for making the decisions to allocate resources and assess performance. See Note 18 to our unaudited condensed consolidated financial statements included in Part I, Item 1. “Financial Statements.”
(2)
Represents Segment Adjusted EBITDA as a percentage of segment revenues.
(3)
Includes revenue of $2.4 million and $3.4 million from the Discontinuing Specialty Lab, for the three months ended June 30, 2023 and June 30, 2022, respectively. See “—Discontinued Operations” above.
(4)
Includes Adjusted EBITDA loss of $(0.9) million related to the Discontinuing Specialty Lab. See “—Discontinued Operations” above.
(5)
Includes the add back of start-up losses and investment in new services of $1.7 million, which are not added-back in 2023. See Note 18 to our unaudited condensed consolidated financial statements included in Part I, Item 1. “Financial Statements.”

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Revenues

Assessment, Permitting and Response segment revenues for the three months ended June 30, 2023 were $61.4 million, an increase of $11.4 million or 22.7% compared to $50.0 million for the three months ended June 30, 2022. The increase was driven by organic growth, growth in revenues from CTEH, and revenues of $1.3 million from acquisitions completed subsequent to the quarter ended June 30, 2022. CTEH revenues were $38.5 million in the three months ended June 30, 2023 compared to $32.1 million in the three months ended June 30, 2022. Total revenue from COVID-19 related services was $1.0 million and $20.4 million in the three months ended June 30, 2023 and June 30, 2022, respectively.

Measurement and Analysis segment revenues for the three months ended June 30, 2023 were $50.1 million, an increase of $7.9 million or 18.5% compared to revenues for the three months ended June 30, 2022 of $42.2 million. The increase was driven primarily by organic growth as a result of strong demand for our testing services and revenues of $2.3 million from acquisitions completed subsequent to the quarter ended June 30, 2022, partially offset by a decline of $1.0 million from the Discontinuing Specialty Lab.

Remediation and Reuse segment revenues for both the three months ended June 30, 2023 and June 30, 2022 were $47.6 million. Revenues were flat as a result of the timing of the completion of certain high dollar value projects throughout 2022 when compared to the 2023 period, as well as the exiting of Discontinued O&M Contracts in the second quarter of 2022, which generated revenues of $0.9 million in the three months ended June 30, 2022, partially offset by $10.1 million in revenues from acquisitions completed subsequent to the quarter ended June 30, 2022.

Segment Adjusted EBITDA

Assessment, Permitting and Response Segment Adjusted EBITDA was $13.8 million for the three months ended June 30, 2023, compared to $10.8 million for the three months ended June 30, 2022 and Segment Adjusted EBITDA margin was 22.5% and 21.6%, respectively. The increase in Segment Adjusted EBITDA and Segment Adjusted EBITDA margin was primarily due to higher revenues and favorable revenue mix during the three months ended June 30, 2023 when compared to the three months ended June 30, 2022.

Measurement and Analysis Segment Adjusted EBITDA, was $10.8 million for the three months ended June 30, 2023, an increase of $3.8 million compared to Segment Adjusted EBITDA of $7.0 million for the three months ended June 30, 2022. Excluding Adjusted EBITDA loss from the Discontinuing Specialty Lab, Segment Adjusted EBITDA was $10.8 million and $7.9 million for the three months ended June 30, 2023 and June 30, 2022, respectively, an increase of $2.9 million. For the three months ended June 30, 2023 and June 30, 2022 Segment Adjusted EBITDA margin was 21.6% and 16.7%, respectively. The increase in Segment Adjusted EBITDA and Segment Adjusted EBITDA margin was due to higher revenues including the margin benefit of higher pricing. Excluding the Discontinuing Specialty Lab, Segment Adjusted EBITDA margin for the three months ended June 30, 2023 and June 30, 2022 was 22.6% and 20.4%, respectively.

Remediation and Reuse Segment Adjusted EBITDA for the three months ended June 30, 2023 was $6.0 million, a decrease of $1.1 million compared to Segment Adjusted EBITDA for the three months ended June 30, 2022 of $7.1 million, and Segment Adjusted EBITDA margin was 12.7% and 14.8%, respectively. The change in Segment Adjusted EBITDA was a result of lower revenues from certain high dollar value projects in 2023 when compared to the 2022 period. The decline in Segment Adjusted EBITDA margin was primarily attributable to the acquisition of Matrix in June 2023, which generated an Adjusted EBITDA margin of 4.1%. Matrix is expected to lower Segment Adjusted EBITDA margins in the Remediation and Reuse segment until the business is fully integrated and margins are normalized, which is anticipated to take place over the next 12 to 18 months.

Corporate and other costs were $9.5 million for the three months ended June 30, 2023 compared to $8.4 million for the three months ended June 30, 2022. The cost increase was primarily driven by higher investments in IT infrastructure and information security in the three months ended June 30, 2023 and the impact of inflation. Corporate costs as a percentage of revenues were flat at 6.0%.

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Six Months Ended June 30, 2023 Compared to the Six Months Ended June 30, 2022

|  | Six Months Ended June 30, |  |
|  | 2023 |  |  |  | 2022 |  |
(in thousands) |  | Segment Revenues |  |  | Segment Adjusted EBITDA(1) |  |  | Segment Adjusted EBITDA Margin(2) |  |  |  | Segment Revenues |  |  | Segment Adjusted EBITDA(1)(5) |  |  | Segment Adjusted EBITDA Margin(2)(5) |  |
Assessment, Permitting and Response |  | $ | 113,625 |  |  | $ | 28,099 |  |  |  | 24.7 |  | % |  | $ | 95,637 |  |  | $ | 20,432 |  |  |  | 21.4 |  | %
Measurement and Analysis |  |  | 92,582 |  | (3) |  | 17,176 |  |  |  | 18.6 |  |  |  |  | 81,985 |  | (3) |  | 13,369 |  | (4) |  | 16.3 |  |
Remediation and Reuse |  |  | 84,322 |  |  |  | 11,321 |  |  |  | 13.4 |  |  |  |  | 96,968 |  |  |  | 15,049 |  |  |  | 15.5 |  |
Total Operating Segments |  | $ | 290,529 |  |  | $ | 56,596 |  |  |  | 19.5 |  | % |  | $ | 274,590 |  |  | $ | 48,850 |  |  |  | 17.8 |  | %
Corporate and Other |  |  |  |  |  | (18,802 | ) |  | n/a |  |  |  |  |  |  |  | (15,886 | ) |  | n/a |  |

(1)
For purposes of evaluating segment profit, the Company’s chief operating decision maker reviews Segment Adjusted EBITDA as a basis for making the decisions to allocate resources and assess performance. See Note 18 to our unaudited condensed consolidated financial statements included in Part I, Item 1. “Financial Statements.”
(2)
Represents Segment Adjusted EBITDA as a percentage of segment revenues.
(3)
Includes revenue of $3.9 million and $9.0 million from the Discontinuing Specialty Lab, for the six months ended June 30, 2023 and June 30, 2022, respectively. See “—Discontinued Operations” above.
(4)
Includes Adjusted EBITDA of $0.4 million from the Discontinuing Specialty Lab. See “—Discontinued Operations” above.
(5)
Includes the add back of start-up losses and investment in new services of $1.7 million. See Note 18 to our unaudited condensed consolidated financial statements included in Part I, Item 1. “Financial Statements.”

Revenues

Assessment, Permitting and Response segment revenues for the six months ended June 30, 2023, were $113.6 million, compared to $95.6 million for the six months ended June 30, 2022. The increase was driven by organic growth, growth in revenues from CTEH, and revenues of $3.8 million from acquisitions completed subsequent to the quarter ended June 30, 2022. CTEH revenues were $69.3 million in the six months ended June 30, 2023 compared to $62.0 million in the six months ended June 30, 2022. Total revenue from COVID-19 related services was $4.8 million and $41.8 million in the six months ended June 30, 2023 and June 30, 2022, respectively.

Measurement and Analysis segment revenues for the six months ended June 30, 2023, were $92.6 million, an increase of $10.6 million or 12.9% compared to revenues for the six months ended June 30, 2022 of $82.0 million. The increase was driven primarily by organic growth as a result of strong demand for our testing services, as well as by revenues of $3.2 million from acquisitions completed subsequent to the quarter ended June 30, 2022, partially offset by a decline of $5.1 million from the Discontinuing Specialty Lab.

Remediation and Reuse segment revenues for the six months ended June 30, 2023 were $84.3 million, a decrease of $12.7 million or 13.0% compared to revenues for the six months ended June 30, 2022 of $97.0 million. The expected decrease was a result of the timing of the completion of certain high dollar value water treatment projects throughout 2022 when compared to the 2023 period, as well as the exiting of Discontinued O&M Contracts in the second quarter of 2022, which generated revenues of $2.3 million in the six months ended June 30, 2022. The decrease was partially offset by $11.8 million in revenues from acquisitions completed subsequent to the quarter ended June 30, 2022.

Segment Adjusted EBITDA

Assessment, Permitting and Response Segment Adjusted EBITDA was $28.1 million for the six months ended June 30, 2023, compared to $20.4 million for the six months ended June 30, 2022. For the six months ended June 30, 2023 and June 30, 2022, Segment Adjusted EBITDA margin was 24.7% and 21.4%, respectively. The increase in Segment Adjusted EBITDA and Segment Adjusted EBITDA margin was primarily due to favorable revenue mix during the six months ended June 30, 2023 when compared to the six months ended June 30, 2022.

Measurement and Analysis Segment Adjusted EBITDA for the six months ended June 30, 2023 was $17.2 million, an increase of $3.8 million compared to Segment Adjusted EBITDA for the six months ended June 30, 2022 of $13.4 million. Excluding Adjusted EBITDA from the Discontinuing Specialty Lab, Segment Adjusted EBITDA was $17.2 million and $13.0 million for the six months ended June 30, 2023 and June 30, 2022, respectively, an increase of $4.2 million. For the six months ended June 30, 2023 and June 30, 2022, Segment Adjusted EBITDA margin was 18.6% and 16.3%, respectively. The increase in Segment Adjusted EBITDA and Segment Adjusted EBITDA margin was due to higher revenues including the margin benefit of higher pricing. Excluding the Discontinuing Specialty Lab, Segment Adjusted EBITDA margin for the six months ended June 30, 2023 and June 30, 2022 was 19.4% and 17.8%, respectively, reflecting strong demand for our testing services and the benefit of pricing increases.

Remediation and Reuse Segment Adjusted EBITDA for the six months ended June 30, 2023 was $11.3 million, a decrease of $3.7 million compared to Segment Adjusted EBITDA for the six months ended June 30, 2022 of $15.0 million. For the six months ended June 30, 2023 and

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June 30, 2022, Segment Adjusted EBITDA margin was 13.4% and 15.5%, respectively. The decrease in Segment Adjusted EBITDA was a result of expected lower revenues. The decline in Segment Adjusted EBITDA margin was primarily attributable to the acquisition of Matrix in June 2023, which generated an Adjusted EBITDA margin of 4.1%, as well as lower margins in our water treatment business as a result of lower revenues.

Corporate and other costs were $18.8 million for the six months ended June 30, 2023 compared to $15.9 million for the six months ended June 30, 2022. The cost increase was primarily driven by higher investments in IT infrastructure and information security in the six months ended June 30, 2023 and the impact of inflation. Corporate costs as a percentage of revenues were 6.5% in the six months ended June 30, 2023 compared to 5.8% in the six months ended June 30, 2022.

Liquidity and Capital Resources

Liquidity describes the ability of a company to generate sufficient cash flows to meet the cash requirements of its business operations, including working capital needs, debt service, acquisitions, other commitments and contractual obligations. We consider liquidity in terms of cash flows from operations and other sources, including availability under our credit facility, and their sufficiency to fund our operating and investing activities.

Our principal sources of liquidity have been borrowings under our credit facilities, other borrowing arrangements, proceeds from the issuance of common and preferred stock and cash generated by operating activities. Historically, we have financed our operations and acquisitions from a combination of cash generated from operations, periodic borrowings under senior secured credit facilities, and proceeds from the issuance of common and preferred stock. Our primary cash needs are for day to day operations, to fund working capital requirements, to fund our acquisition strategy and any related cash earn-out obligations, to pay interest and principal on our indebtedness and dividends on our Series A-2 preferred stock, and to make capital expenditures. Additionally, in connection with certain acquisitions, we agree to earn-out provisions and other purchase price adjustments that may require future payments. For example, the CTEH acquisition agreement included an earn-out provision that provided for the payment of contingent consideration based on CTEH’s results in excess of a specified target. CTEH fully achieved the target in 2021 and the $30.0 million payment was paid in cash in the first quarter of 2022. We may also make up to $7.7 million in aggregate earn-out payments between the years 2023 and 2026 in connection with the acquisitions of Vista, Sensible, Huco, and EAI, of which up to $0.8 million may be paid only in cash, up to $5.5 million may be paid only in common stock and up to $1.5 million may be paid in cash or, at our option, in common stock. See Note 7 to our unaudited condensed consolidated financial statements included in Part 1, Item 1. “Financial Statements.”

We expect to continue to fund our liquidity requirements, including any cash earn-out payments that may be required in connection with acquisitions, through cash generated from operations and borrowings under our credit facility. We believe these sources will be sufficient to fund our cash needs for the short- and long-term.

Cash Flows

The following table summarizes our cash flows for the periods presented:

|  | Six Months Ended June 30, |
(in thousands) |  | 2023 |  |  | 2022 |
Consolidated Statement of Cash Flows Data: |  |  |  |  |  |
Net cash provided by (used in) operating activities |  | $ | 24,512 |  |  | $ | (2,942 | )
Net cash used in investing activities |  |  | (86,983 | ) |  |  | (18,330 | )
Net cash used in financing activities |  |  | (3,959 | ) |  |  | (27,096 | )
Change in cash, cash equivalents and restricted cash |  | $ | (66,430 | ) |  | $ | (48,368 | )

Operating Activities

Cash flows from operating activities can fluctuate from period-to-period as earnings, working capital needs and the timing of payments for contingent consideration, taxes, bonus payments and other operating items impact reported cash flows.

For the six months ended June 30, 2023, net cash provided by operating activities was $24.5 million compared to net cash used in operating activities of $2.9 million for the six months ended June 30, 2022. Cash provided by and used in operating activities for the six months ended June 30, 2023 and June 30, 2022, includes payment of contingent consideration of $0.6 million and $19.5 million, respectively. Excluding payment of contingent consideration, cash provided by operating activities was $25.1 million and $16.6 million in the six months ended June 30, 2023 and June 30, 2022, respectively. The period-over-period increase of $8.5 million, excluding the impact of contingent consideration, was primarily due to an increase in working capital in the current period of $4.7 million versus an increase in working capital in the prior year period of $10.2 million and higher earnings before non-cash items of $3.3 million.

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Working capital increased by $4.7 million in the six months ended June 30, 2023, primarily due to a decrease in accounts payable and other accrued liabilities of $5.6 million (primarily as a result of lower contract liabilities due to the timing of project completion) and an increase in prepaid expenses and other current assets of $1.7 million, partially offset by a decrease in accounts receivable and contract assets of $2.1 million and an increase in accrued payroll and benefits of $0.4 million.

Investing Activities

For the six months ended June 30, 2023, net cash used in investing activities was $87.0 million, driven by cash paid for the acquisitions of Matrix, GreenPath, Frontier and EAI, net of cash acquired, of $63.1 million, as well as $21.0 million in cash consideration for purchases of property and equipment (which included the purchase of a $12.2 million replacement aircraft for use in emergency responses following a crash in February 2023), $2.0 million in proprietary software development costs, and the payment of assumed purchase price obligations of $1.0 million.

For the six months ended June 30, 2022, net cash used in investing activities was $18.3 million, primarily driven by cash paid for the acquisitions of Environmental Standards and IAG, net of cash acquired, of $14.3 million, as well as purchases of property and equipment for cash consideration of $3.5 million and payment of assumed purchase price obligations of $0.6 million.

Financing Activities

For the six months ended June 30, 2023, net cash used in financing activities was $4.0 million. Cash used in financing activities was driven by the quarterly dividends on the Series A-2 preferred stock of $8.2 million, the term loan amortization payments of $6.6 million related to our 2021 Credit Facility, the repayment of finance leases of $2.2 million, and the payment of acquisition-related contingent consideration of $1.2 million, partially offset by proceeds received from the aircraft loan of $10.9 million and the exercise of stock options of $3.3 million.

For the six months ended June 30, 2022, net cash used in financing activities was $27.1 million. Cash used in financing activities was driven by the payment of acquisition-related contingent consideration of $10.7 million, the payment of the quarterly dividends on the Series A-2 preferred stock of $8.2 million, term loan amortization payments of $6.6 million related to our 2021 Credit Facility, and the repayment of finance leases of $1.9 million, partially offset by proceeds received from the exercise of stock options of $0.5 million.

Credit Facilities

2021 Credit Facility

On April 27, 2021, we entered into a Senior Secured Credit Agreement, or the 2021 Credit Facility, providing for a $300.0 million credit facility comprised of a $175.0 million term loan and a $125.0 million revolving credit facility, and used a portion of the proceeds to repay all amounts outstanding under the prior credit facility. The 2021 revolving credit facility includes a $20.0 million sublimit for the issuance of letters of credit. Subject to certain exceptions, all amounts under the 2021 Credit Facility will become due on April 27, 2026. We have the option to borrow incremental term loans or request an increase in the aggregate commitments under the revolving credit facility up to an aggregate amount of $150.0 million subject to the satisfaction of certain conditions.

The 2021 Credit Facility term loan must be repaid in quarterly installments. Prior to May 31, 2023, the 2021 Credit Facility term loan and the revolver bore interest subject to the Company’s leverage ratio and LIBOR. On May 31, 2023, we amended our 2021 Credit Facility to transition the reference rate from LIBOR to SOFR. The transition to SOFR did not materially impact the interest rate paid by the Company or change any material terms of the 2021 Credit Facility.

On May 30, 2023, we amended the 2022 Interest Rate Swap transaction we originally entered into on January 27, 2022, to convert the floating component of the interest rate on $100.0 million of borrowings to 1-Month Term SOFR and a new coupon of 1.319% until January 27, 2025. Prior to the amendment, the floating component of the interest rate was subject to LIBOR and a coupon of 1.39%. The transition to SOFR did not materially impact the interest rate we pay or change any material terms of the 2022 Interest Rate Swap.

On May 30, 2023, we entered into a second interest rate swap transaction fixing the floating component of the interest rate on an additional $70.0 million of borrowings to 1-Month Term SOFR and a coupon of 3.88% until April 27, 2026.

Additionally, effective September 1, 2022, we received an interest rate reduction of 0.05% under the 2021 Credit Facility based on our achievement of certain sustainability and environmental, social and governance related objectives as provided for in the 2021 Credit Facility.

Our obligations under the 2021 Credit Facility are guaranteed by certain of our existing and future direct and indirect subsidiaries, and such obligations are secured by substantially all of our assets. The 2021 Credit Facility includes a number of covenants imposing certain restrictions on our business. The 2021 Credit Facility also includes financial covenants requiring us to remain below a maximum total net leverage ratio and

49

a minimum fixed charge coverage ratio. As of June 30, 2023 and June 30, 2022, our consolidated total leverage ratio was 1.9 times and 1.1 times, respectively, and we were in compliance with all covenants under the 2021 Credit Facility.

The weighted average interest rate on the 2021 Credit Facility for the six months ended June 30, 2023 and June 30, 2022 was 6.3% and 2.2%, respectively.

The 2021 Credit Facility contains a mandatory prepayment feature upon a number of events, including with the proceeds of certain asset sales and proceeds from the issuance of any debt.

See Note 12 to our unaudited condensed consolidated financial statements included in Part I, Item 1. “Financial Statements.”

Loan and Aircraft Security Agreement

On May 18, 2023, we entered into a Loan and Aircraft Security Agreement to finance $10.9 million of the purchase of a new aircraft, which must be repaid in 60 monthly consecutive installments, and all outstanding amounts will become due on May 18, 2028. The aircraft loan bears interest subject to 1-Month Term SOFR and a coupon of 1.86%. The entire principal balance may be prepaid in full subject to a 3.0%, 2.0% and 1.0% prepayment fee if paid prior to the first, second and third anniversary of the loan, respectively.

See Note 12 to our unaudited condensed consolidated financial statements included in Part I, Item 1. “Financial Statements.”

Series A-2 Preferred Stock

On April 13, 2020, we issued 17,500 shares of the Series A-2 preferred stock with a par value of $0.0001 per share and a warrant to purchase common stock, in exchange for $175.0 million. The Series A-2 preferred stock does not mature or have a cash repayment obligation; however, it is redeemable at our option. The Series A-2 preferred stock becomes convertible into our common stock beginning on the four-year anniversary of the Series A-2 preferred stock issuance. Upon the four-year anniversary of the issuance, holders of Series A-2 preferred stock may convert up to $60.0 million of such shares into our common stock at a conversion rate discounted to 85.0% of the volume weighted average trading value, with the permitted amount of Series A-2 preferred stock to be converted increasing at each subsequent anniversary of the issuance until the sixth anniversary, after which all of the Series A-2 preferred stock may be converted at the holder’s option. The Series A-2 preferred stock is subject to a 9.0% interest rate per annum with required quarterly cash payments. If permitted under our existing debt facilities, we must pay the Series A-2 preferred stock dividend in cash each quarter.

With respect to any redemption of any share of the Series A-2 preferred stock prior to April 13, 2023, we were subject to a make whole penalty in which the holder was guaranteed at least three years of dividend payments on the redeemed amount. We are no longer subject to this make whole penalty.

See Note 15 to our unaudited condensed consolidated financial statements included in Part I, Item 1. “Financial Statements.”

Critical Accounting Policies and Estimates

Our 2022 Form10-K includes a summary of the critical accounting policies and estimates we believe are the most important to aid in understanding our financial results. There have been no material changes to those critical accounting policies and estimates as disclosed therein, other than as described in Note 2 to our unaudited condensed consolidated financial statements included in Part I, Item 1. “Financial Statements.”

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Item 3. Quantitative and Qualitati ve Disclosures About Market Risk.

Interest Rate Risk

We have market risk exposure arising from changes in interest rates on our credit facility, which bears interest at rates that are benchmarked subject to the Company’s leverage ratio and SOFR. Based on our overall interest rate exposure to variable rate debt outstanding as of June 30, 2023, which factors in our interest rate swaps on $170.0 million of debt, a 1.0% increase or decrease in interest rates on the term loan, aircraft loan, and revolver would have minimal impact in our annual income (loss) before income taxes.

Inflation Risk

We experienced higher labor and significantly higher travel and other direct costs in the fiscal year ended December 31, 2022 as a result of inflation, particularly in our Measurement and Analysis and Remediation and Reuse segments. In the six months ended June 30, 2023, we also experienced, and continue to experience, higher labor costs as a result of inflation. We believe we have successfully raised prices in businesses with short term contracts to offset these inflationary effects. We also have and are continuing to raise prices on medium term (one to four quarter) contracts as these contracts are renewed or new contracts are won, and as a result have been able to offset much of the impact of inflation to date. We expect to continue to raise prices if direct costs continue to increase, and although inflation has increased our Selling, general and administrative expense in the six months ended June 30, 2023, we do not believe over a longer period of time that inflation will have a material effect on our business, financial condition or results of operations. If our costs were to become subject to additional and unanticipated significant sustained inflationary pressures, we may not be able to fully offset such higher costs through price increases. Our inability or failure to do so could adversely affect our business, financial condition and results of operations.

Item 4. Controls and Procedures.

Evaluation of Disclosure Controls and Procedures

As required by Rule 13a-15(b) under the Exchange Act, our management, including our Chief Executive Officer and Chief Financial Officer, carried out an evaluation of the effectiveness of the design and operation of our disclosure controls and procedures (as defined in Rule 13a-15(e) under the Exchange Act), as of June 30, 2023, the end of the period covered by this Quarterly Report on Form 10-Q. Based on the foregoing, our Chief Executive Officer and Chief Financial Officer concluded that, as of June 30, 2023, the end of the period covered by this Quarterly Report on Form 10-Q, our disclosure controls and procedures were effective at the reasonable assurance level.

Internal Control Over Financial Reporting

There were no changes in our internal control over financial reporting (as defined in Rule 13a-15(f) under the Exchange Act) that occurred during the quarter ended June 30, 2023, that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

Limitations on Effectiveness of Controls

Our management, including our Chief Executive Officer and Chief Financial Officer, does not expect that our disclosure controls and procedures or our system of internal control over financial reporting will prevent or detect all errors and all fraud. A control system, no matter how well designed or operated, can provide only reasonable, but not absolute, assurance that the objectives of the system of internal control are met. The design of our control system reflects the fact that there are resource constraints, and that the benefits of such control system must be considered relative to their costs. Further, because of the inherent limitations in all control systems, no evaluation of controls can provide absolute assurance that all control failures and instances of fraud, if any, within the Company have been detected. These inherent limitations include the realities that judgments in decision-making can be faulty and that breakdowns can occur because of simple error or mistake. Additionally, controls can be circumvented by the intentional acts of individuals, by collusion of two or more people, or by management override of the controls. The design of any system of controls is also based in part on certain assumptions about the likelihood of future events, and there can be no assurance that the design of any particular control will always succeed in achieving its objective under all potential future conditions.

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PART II—OTHE R INFORMATION

Item 1. Legal Proceedings.

From time to time, we are subject to various legal proceedings that arise in the normal course of our business activities, including those involving labor and employment, anti-discrimination, commercial disputes and other matters. We are not a party to any litigation the outcome of which, if determined adversely to us, would individually or in the aggregate be reasonably expected to have a material adverse effect on our results of operations or financial position. Regardless of outcome, litigation can have an adverse impact on us because of defense and settlement costs, diversion of management resources and other factors.

Item 1A. Ri sk Factors.

There have been no material changes to our risk factors from the risk factors disclosed in our 2022 Form 10-K. The risks described in our 2022 Form 10-K, in addition to the other information set forth in this Quarterly Report on Form 10-Q, are not the only risks facing we face. Additional risks and uncertainties not currently known to us or that we currently deem to be immaterial also may materially adversely affect our business, financial condition and/or operating results.

Item 2. Unregistered Sales of Equi ty Securities and Use of Proceeds.

On June 1, 2023, we issued an aggregate of 86,577 shares of common stock to the former owners of GreenPath as consideration for the acquisition of GreenPath. The issuance of common stock was exempt from the registration requirements of the Securities Act pursuant to Section 4(a)(2) thereof as a transaction by an issuer not involving any public offering.

Item 3. Defaults Upo n Senior Securities.

None.

Item 4. Mine Safe ty Disclosures.

Not applicable.

Item 5. Other Information.

On June 14, 2023, Vijay Manthripragada, Chief Executive Officer, amended an existing trading plan intended to satisfy Rule 10b5-1(c). The plan, as amended, provides for (a) the sale of 12,500 shares of Company common stock on September 13, 2024 and (b) the purchase of up to 100,000 shares of Company common stock in connection with the exercise of stock options, and the sale of up to 100,000 of such shares between September 13, 2023 and March 14, 2024, in each case subject to certain conditions.

On June 15, 2023, Allan Dicks, Chief Financial Officer, adopted a trading plan intended to satisfy Rule 10b5-1(c) to (a) sell up to 16,310 shares of Company common stock between September 15, 2023 and June 14, 2024, subject to certain conditions and (b) to purchase up to 98,260 shares of Company common stock in connection with the exercise of stock options, and to sell up to 98,260 of such shares between September 15, 2023 and June 14, 2024, subject to certain conditions.

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Item 6. E xhibits.

Exhibit Number |  | Description
10.1* |  | Second Amendment to Credit Agreement, dated as of May 26, 2023, by and among Montrose Environmental Group, Inc., the Lenders party thereto, and BMO Harris Bank, N.A., as successor in interest to Bank of the West, as Administrative Agent.
31.1* |  | Certification of Principal Executive Officer Pursuant to Rules 13a-14(a) and 15d-14(a) under the Securities Exchange Act of 1934, as Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
31.2* |  | Certification of Principal Financial Officer Pursuant to Rules 13a-14(a) and 15d-14(a) under the Securities Exchange Act of 1934, as Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
32.1** |  | Certification of Principal Executive Officer Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
32.2** |  | Certification of Principal Financial Officer Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
101.INS* |  | Inline XBRL Instance Document
101.SCH* |  | Inline XBRL Taxonomy Extension Schema Document
101.CAL* |  | Inline XBRL Taxonomy Extension Calculation Linkbase Document
101.DEF* |  | Inline XBRL Taxonomy Extension Definition Linkbase Document
101.LAB* |  | Inline XBRL Taxonomy Extension Label Linkbase Document
101.PRE* |  | Inline XBRL Taxonomy Extension Presentation Linkbase Document
104* |  | Cover Page Interactive Data File – The cover page from the Company’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2023 is formatted in Inline XBRL (included as Exhibit 101)

* Filed herewith.

** Exhibit is furnished and shall not be deemed “filed” for purposes of Section 18 of the Exchange Act, or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference in any filing under the Securities Act, or the Exchange Act, except as shall be expressly set forth by specific reference in such filing.

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SIGNA TURES

Pursuant to the requirements 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.

|  | Montrose Environmental Group, Inc.
Date: August 9, 2023 |  | By: | /s/ Allan Dicks
|  |  | Allan Dicks
|  |  | Chief Financial Officer

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