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HNRG SCHEDULE 13G/A: SEC filing

An institutional holder

Filed with the SEC on · accession 0001193125-26-345348

HNRG filed a SCHEDULE 13G/A (schedule 13g/a) with the SEC on Aug 11, 2026. An institutional holder filed an amended Schedule 13G regarding its beneficial ownership position in Hallador Energy Co (HNRG). The stock moved -1.5% by the first close after the filing.

Summary of the filing

An institutional holder filed an amended Schedule 13G regarding its beneficial ownership position in Hallador Energy Co (HNRG). The filing indicates a change in the holder's passive ownership stake.

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Key details

IssuerHallador Energy Co

How HNRG stock reacted

Close before

$15.88

Aug 10, 2026

First close after

-1.51%

$15.64

5 trading days

+1.95%

$16.19

Since filing

-33.00%

$10.64

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Frequently asked questions

What did HNRG file with the SEC on Aug 11, 2026?

HNRG filed a SCHEDULE 13G/A (SEC filing). An institutional holder filed an amended Schedule 13G regarding its beneficial ownership position in Hallador Energy Co (HNRG). The filing indicates a change in the holder's passive ownership stake.

How do I read a SCHEDULE 13G/A?

A report the company filed with the SEC (the US market regulator). Start with the summary, then the key amounts and names. Compare it with the company’s earlier filings.

Why are SEC filings important?

Public companies must tell the SEC about anything that can change their value — results, leadership changes, big deals, new shares, bankruptcy. Filings are the official source, often before the news. A SCHEDULE 13G/A (schedule 13g/a): A report the company filed with the SEC (the US market regulator).

How did HNRG stock react to this filing?

HNRG closed at $15.88 before the filing and $15.64 on Aug 11, 2026 (-1.51%). Five trading days later: $16.19 (+1.95%).

Other HNRG SEC filings

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