SCHEDULE 13G

CUSIP No.

1

Names of Reporting Persons

Mark D. Becker

2

Check the appropriate box if a member of a Group (see instructions)

(a)

(b)

3

Sec Use Only

4

Citizenship or Place of Organization

UNITED STATES

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 1,437,573.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 1,437,573.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

1,437,573.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

Checkbox not checked

11

Percent of class represented by amount in row (9)

3.0 %

12

Type of Reporting Person (See Instructions)

IN

Comment for Type of Reporting Person: (1) Rows 5, 7 and 9: Consists of (i) 180,745 shares of Common Stock, par value $0.01 per share ("Common Stock"), of Hallador Energy Co (the "Company") held of record by The MDB Irrevocable Trust Dated March 24, 2023, for which Mr. Becker has sole voting and dispositive power, and (ii) 1,256,828 shares of Common Stock held of record by The Mark D. Becker Living Trust Dated March 29, 2021, for which Mr. Becker has sole voting and dispositive power. (2) Row 11: Percentage ownership is based on 47,143,357 shares of Common Stock outstanding as of August 6, 2026, as reported in the Company's Quarterly Report on Form 10-Q filed with the Securities and Exchange Commission on August 10, 2026.

SCHEDULE 13G

Item 1.

(a)

Name of issuer:

Hallador Energy Co

(b)

Address of issuer's principal executive offices:

1183 East Canvasback Drive, Terre Haute, Indiana 47802

Item 2.

(a)

Name of person filing:

Mark D. Becker

(b)

Address or principal business office or, if none, residence:

4234 E. Indian School Road, Phoenix, Arizona 85018

(c)

Citizenship:

The Reporting Person is a citizen of the United States of America.

(d)

Title of class of securities:

Common Stock

(e)

CUSIP No.:

Item 3.

If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:

(a)

Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);

(b)

Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);

(c)

Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);

(d)

Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);

(e)

An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);

(f)

An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);

(g)

A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);

(h)

A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);

(i)

A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);

(j)

A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J),
please specify the type of institution:

(k)

Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).

Item 4.

Ownership

(a)

Amount beneficially owned:

See Row 9 of cover page.

(b)

Percent of class:

See Row 11 of cover page.

(c)

Number of shares as to which the person has:

(i) Sole power to vote or to direct the vote:

See Row 5 of cover page.

(ii) Shared power to vote or to direct the vote:

See Row 6 of cover page.

(iii) Sole power to dispose or to direct the disposition of:

See Row 7 of cover page.

(iv) Shared power to dispose or to direct the disposition of:

See Row 8 of cover page.

Item 5.

Ownership of 5 Percent or Less of a Class.

Ownership of 5 percent or less of a class

Item 6.

Ownership of more than 5 Percent on Behalf of Another Person.

Not Applicable

Item 7.

Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.

Not Applicable

Item 8.

Identification and Classification of Members of the Group.

Not Applicable

Item 9.

Notice of Dissolution of Group.

Not Applicable

Item 10.

Certifications:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under § 240.14a-11.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

Mark D. Becker

Signature:	/s/ Mark D. Becker
Name/Title:	Mark D. Becker
Date:	08/11/2026