MARTINGALE ASSET MANAGEMENT L P

Position in HNRG — Hallador Energy Co

CIK 936944 BOSTON, MA

Position in HNRG

as of Jun 30, 2026 · filed Aug 13, 2026 Compact

Position Value

$1,447,543

+$490,963 QoQ

Shares Held

83,240

+41.7% QoQ

Ownership

0.177%

of shares outstanding

% of Portfolio

0.03%

of 13F equity value

Holder Rank

#56

of 172 holders

Holding Since

Mar 2024

4 quarters on record

Voting authority Sole 70% Shared 0% None 30%

Utilities · as of Jun 30, 2026

MARTINGALE ASSET MANAGEMENT L P holds $8,894,388 across 4 Utilities - Independent Power Producers names. HNRG ranks #3 (16.3% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	CEG	Constellation Energy Corp	15,084	$3,746,413
2	VST	Vistra Corp.	18,801	$2,982,402
3	HNRG	Hallador Energy Co This page	83,240	$1,447,543
4	NRG	Nrg Energy, Inc.	4,916	$718,030

4 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$1,447,543	83,240	+41.7%	Shares	Sole	2026-08-13
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.