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): March 1225, 2026

Hallador Energy Company

(Exact name of registrant as specified in its charter)


Colorado	001-34743	84-1014610
(State or other jurisdiction of incorporation)	(Commission File Number)	(IRS Employer Identification No.)

1183 East Canvasback Drive, Terre Haute, Indiana 47802

(Address, including zip code, of principal executive offices)

Registrant’s telephone number, including area code: (812) 299-2800

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 Shares, $.01 par value	HNRG	Nasdaq

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 2.02 - Results of Operations and Financial Condition~~

Item 1.04 Mine Safety - Reporting of Shutdowns and Patterns of Violations.

On March 12, 2026, Hallador Energy Company issued a press release announcing its fourth quarter and full year 2025 financial and operating results. A copy of the press release is attached hereto as Exhibit 99.1 and is incorporated by reference herein.

On July 21, 2010, the Dodd-Frank Wall Street and Consumer Protection Act (the “Act”) was enacted. Section 1503 of the Act requires a Current Report on Form 8-K if a company is issued an imminent danger order under Section 107(a) of the Federal Mine Safety and Health Act of 1977 (the “Mine Act”) by the federal Mine Safety and Health Administration (“MSHA”).

The information included in this Current Report on Form 8-K, including Exhibit 99.1 hereto, that is furnished pursuant to this Item 2.02 shall not be deemed to be “filed” for the purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that section or Sections 11 and 12(a)(2) of the Securities Act of 1933, as amended. In addition, the information included in this Current Report on Form 8-K, including Exhibit 99.1 hereto, that is furnished pursuant to this Item 2.02 shall not be incorporated by reference into any filing of the Company, whether made before or after the date hereof, regardless of any general incorporation language in such filing, unless expressly incorporated by specific reference into such filing.

On March 25, 2026, Sunrise Coal, LLC, a subsidiary of Hallador Energy Company, received an imminent danger order under Section 107(a) of the Mine Act at Oaktown Fuels, Mine No. 1 ("Oaktown"), located in Knox County, Indiana (MSHA ID# 12-02394). On that date, an MSHA representative alleged that an electrician was performing electrical work on a piece of equipment that was not de-energized. The order required the electrician to cease working until the equipment was de-energized. Oaktown personnel immediately de-energized the equipment. No injuries resulted from the condition and production at the mine was not interrupted. The Company disagrees that the condition constitutes an imminent danger under the Mine Act and intends to contest the 107(a) order.

Item 9.01 – Financial Statements and Exhibits

(d) Exhibits

99.1 – Hallador Energy Company Reports Fourth Quarter and Full Year 2025 Financial and Operating Results

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 Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

March 12, 2026	By:	/s/ TODD E. TELESZ
Date: March 27, 2026	By:	/s/ TODD E. TELESZ
		Todd E. TeleszCFO

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