David J. Lubar - 28 May 2026 Form 4 Insider Report for HALLADOR ENERGY CO (HNRG)

Reporting relationship: Director, 10%+ Owner
Issuer ticker: HNRG
Reported as of: 28 May 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 01 Jun 2026, 20:44:48 UTC
Prior SEC filing: 31 Dec 2025
Source filing: View source filing
Reporting owner signature: /s/ David J. Lubar

Key filing fact

David J. Lubar filed Form 4 for HALLADOR ENERGY CO (HNRG) on 01 Jun 2026.

Key facts

This page summarizes David J. Lubar's Form 4 filing for HALLADOR ENERGY CO (HNRG).
1 reported transaction and 1 derivative row are listed below.
Accepted by SEC: 01 Jun 2026, 20:44.

Change

Previous filing in this sequence was filed on 31 Dec 2025.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001032385 Primary reporting owner

LUBAR DAVID J

Relationship: Director, 10%+ Owner
Address: 1183 EAST CANVASBACK DRIVE, TERRE HAUTE
Signature: /s/ David J. Lubar
Signature date: 01 Jun 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

HNRG holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 2,851
Date: 28 May 2026
Ownership: Direct

HNRG holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 2,788,685
Date: 28 May 2026
Ownership: Lubar Equity Fund LLC
Footnotes: F1

HNRG holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 2,391,571
Date: 28 May 2026
Ownership: Lubar Opportunity Fund, I (LOFI)
Footnotes: F2

HNRG holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 271,763
Date: 28 May 2026
Ownership: SM Opportunity Fund, LLC (SMOF)
Footnotes: F3

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

HNRG transaction Derivative

Restricted Stock Units

Award

Transaction value
Shares: +6,316
Change %
Price
Shares after: 6,316
Date: 28 May 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 6,316
Exercise price
Footnotes: F4, F5, F6

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 6 footnotes

Footnote F1

Shares are owned by the Lubar Equity Fund LLC (LEF). Lubar & Co. serves as investment manager over, and exercises in its sole discretion the entire voting and dispositive power with respect to all shares of the Issuer held by LEF. Mr. David J. Lubar serves as the Chief Executive Officer of Lubar & Co., and as a result, may be deemed to beneficially own these shares. Mr. Lubar disclaims beneficial ownership in the shares owned by LEF, except to the extent of his respective pecuniary interest therein.

Footnote F2

Shares are owned by the Lubar Opportunity Fund, I (LOFI). Lubar & Co. serves as investment manager over, and exercises in its sole discretion the entire voting and dispositive power with respect to all shares of the Issuer held LOFI. Mr. David J. Lubar serves as the Chief Executive Officer of Lubar & Co., and as a result, may be deemed to beneficially own these shares. Mr. Lubar disclaims beneficial ownership in the shares owned by LOFI, except to the extent of his respective pecuniary interest therein.

Footnote F3

Shares are owned by the SM Opportunity Fund, LLC (SMOF), Lubar & Co. serves as investment manager over, and exercises in its sole discretion the entire voting and dispositive power with respect to all shares of the Issuer held by SMOF. Mr. David J. Lubar serves as the Chief Executive Officer of Lubar & Co., and as a result, may be deemed to beneficially own these shares. Mr. Lubar disclaims beneficial ownership in the shares owned by SMOF, except to the extent of his respective pecuniary interest therein.

Footnote F4

Each Restricted Stock Unit represents a contingent right to receive one share of Hallador Energy Common Stock. Vested shares will be delivered to the reporting person pursuant to the terms of the Second Amended and Restated 2008 Restricted Stock Unit Plan.

Footnote F5

These shares were issued to the reporting person as consideration for his total annual equity compensation for service on the Issuer's board.

Footnote F6

The Units shall fully vest May 27, 2027, subject in each case subject to Participant's continued Service through the applicable vesting date, subject to the terms and conditions set forth in the Second Amended and Restated 2008 Restricted Stock Unit Plan and Award Agreement.