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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 8-K
CURRENT REPORT
PURSUANT TO SECTION 13 OR 15(D) OF
THE SECURITIES EXCHANGE ACT OF 1934
Date of Report (Date of Earliest Event Reported): December 4, 2025
RGC RESOURCES, INC.
(Exact name of Registrant as specified in its charter)

Virginia | 000-26591 | 54-1909697
(State or other jurisdiction of incorporation) | (Commission File Number) | (IRS Employer Identification No.)

519 Kimball Ave., N.E. Roanoke, Virginia | 24016
(Address of principal executive offices) | (Zip Code)

Registrant’s telephone number, including area code: 540-777-4427
(Former name or former address, if changed since last report)
Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐ | Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐ | Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ | Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ | Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

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

Title of Each Class | Trading Symbol | Name of Each Exchange on Which Registered
Common Stock, $5 Par Value | RGCO | NASDAQ Global Market

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 or Rule 12b-2 if the Securities Exchange Act of 1934.

| 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. ☐

ITEM 7.01. | REGULATION FD DISCLOSURE

RGC Resources, Inc. (the "Company") is hosting a conference call with analysts to discuss the operating results of the Company's fourth quarter and fiscal year ending September 30, 2025. The information presented during the call is furnished as Exhibit 99.1 to this report.
In accordance with General Instruction B.2 of Form 8-K, the information in this Current Report on Form 8-K, including Exhibit 99.1, shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended except as shall be expressly set forth in such a filing.

ITEM 9.01. | FINANCIAL STATEMENTS AND EXHIBITS

(d) Exhibits |
99.1 | RGC Resources, Inc. fourth quarter fiscal 2025 earnings webcast presentation
104 | Cover Page Interactive Data File (embedded within the Inline XBRL document)

SIGNATURES
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 hereunto duly authorized.

| RGC RESOURCES, INC. |
Date: December 4, 2025 | By: | /s/ Timothy J. Mulvaney |
|  | Timothy J. Mulvaney |
|  | Vice President, Treasurer and Chief Financial Officer |
|  | (Principal Financial Officer) |