MARTINGALE ASSET MANAGEMENT L P

Position in HNRG — Hallador Energy Co

CIK 936944 BOSTON, MA

Position in HNRG

as of Mar 31, 2026 · filed May 13, 2026 Compact

Position Value

$956,580

+$100,866 QoQ

Shares Held

58,758

+30.7% QoQ

Ownership

0.125%

of shares outstanding

% of Portfolio

0.02%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Mar 2024

3 quarters on record

Voting authority Sole 60.686204431736954.ToString("F0")% Shared 0.ToString("F0")% None 39.313795568263046.ToString("F0")%

Utilities · as of Mar 31, 2026

MARTINGALE ASSET MANAGEMENT L P holds $12,787,059 across 4 Utilities - Independent Power Producers names. HNRG ranks #3 (7.5% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	NRG	Nrg Energy, Inc.	54,563	$7,973,836
2	CEG	Constellation Energy Corp	11,645	$3,251,866
3	HNRG	Hallador Energy Co This page	58,758	$956,580
4	VST	Vistra Corp.	4,023	$604,777

3 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$956,580	58,758	+30.7%	Shares	Sole	2026-05-13
2025-12-31	$855,714	44,943	+29.0%	Shares	Sole	2026-02-13
2024-03-31	$185,723	34,845	—	Shares	Sole	2024-05-14
No filing history on record for this holder in this stock.