MARTINGALE ASSET MANAGEMENT L P

Position in GSM — Ferroglobe PLC

CIK 936944 BOSTON, MA

Position in GSM

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

Position Value

$816,200

New position

Shares Held

198,107

first reported quarter

Ownership

0.106%

of shares outstanding

% of Portfolio

0.02%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Mar 2026

1 quarter on record

Voting authority Sole 57% Shared 0% None 43%

Basic Materials · as of Mar 31, 2026

MARTINGALE ASSET MANAGEMENT L P holds $6,398,092 across 3 Other Industrial Metals & Mining names. GSM ranks #3 (12.8% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	MTRN	MATERION Corp	30,818	$4,457,823
2	CMP	Compass Minerals International Inc	48,140	$1,124,069
3	GSM	Ferroglobe PLC This page	198,107	$816,200

1 filing row on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$816,200	198,107	—	Shares	Sole	2026-05-13
No filing history on record for this holder in this stock.