Reg FD Disclosure · Company Update

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) May 15, 2025 (May 15, 2025) Name of Registrant , State of Incorporation , Address Of Principal Executive Offices , Telephone Number , Commission File No. , IRS Employer Identification No. TXNM Energy, Inc. (A New Mexico Corporation) 414 Silver Ave. SW Albuquerque , New Mexico 87102-3289 Telephone Number - ( 505 ) 241-2700 Commission File No. - 001-32462 IRS Employer Identification No. - 85-0468296 Public Service Company of New Mexico (A New Mexico Corporation) 414 Silver Ave. SW Albuquerque , New Mexico 87102-3289 Telephone Number - ( 505 ) 241-2700 Commission File No. - 001-06986 IRS Employer Identification No. - 85-0019030 ____________________________________________________________________________________________________________ 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 40.14d-2(b)) ☐ Pre-commencement communications pursuant to Rule 13e-4 (c) under the Exchange Act (17 CFR 40.13e-4(c)) Securities registered pursuant to Section 12(b) of the Act: Registrant Title of each class Trading Symbol(s) Name of exchange on which registered TXNM Energy, Inc. Common Stock, no par value TXNM New York Stock Exchange Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). 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. On May 15, 2025, the New Mexico Public Regulation Commission (the “NMPRC”) approved the unopposed stipulation filed by Public Service Company of New Mexico (“PNM”) and parties in PNM's 2025 Rate Request application. Under the approved stipulation, customer rates will be phased in with 50% of the increase effective July 1, 2025 and the second phase effective April 1, 2026. The overall revenue requirement increase of $105.0 million is based on a 9.45% return on equity and a 51.0% equity capitalization structure. A copy of the press release discussing the approval of the unopposed stipulation is furnished as Exhibit 99.1 to this Current Report on Form 8-K. In accordance with General Instruction B.2 of Form 8-K, the information in this Item 7.01 of this Current Report on Form 8-K, including Exhibit 99.1, shall not be deemed “filed” for the purposes of Section 18 of the Securities Exchange Act of 1934, as amended (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 of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific references in such a filing. Item 8.01 Other Events. The first paragraph of Item 7.01 above is incorporated into this item 8.01. Item 9.01 Financial Statements and Exhibits. (d)    Exhibits. 99.1     Press Release , dated May 15, 2025 (furnished not filed) . 104    Cover Page Interactive Data File (embedded within the Inline XBRL document). SIGNATURE Pursuant to the requirements of the Securities Exchange Act of 1934, the registrants have duly caused this report to be signed on their behalf by the undersigned thereunto duly authorized. TXNM ENERGY, INC. PUBLIC SERVICE COMPANY OF NEW MEXICO (Registrants) Date: May 15, 2025 /s/ Gerald R. Bischoff Gerald R. Bischoff Vice President and Corporate Controller (Officer duly authorized to sign this report)