CHESAPEAKE ASSET MANAGEMENT LLC

Position in MTRN — MATERION Corp

CIK 1079397 NEW YORK, NY

Position in MTRN

as of Jun 30, 2026 · filed Aug 4, 2026 Compact

Position Value

$89,217

New position

Shares Held

300

first reported quarter

Ownership

0.001%

of shares outstanding

% of Portfolio

0.06%

of 13F equity value

Holder Rank

#314

of 400 holders

Holding Since

Jun 2026

1 quarter on record

Voting authority Sole 100% Shared 0% None 0%

Basic Materials · as of Jun 30, 2026

CHESAPEAKE ASSET MANAGEMENT LLC holds $105,881 across 3 Other Industrial Metals & Mining names. MTRN ranks #1 (84.3% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	MTRN	MATERION Corp This page	300	$89,217
2	LAR	Lithium Argentina AG	1,375	$11,371
3	LAC	Lithium Americas Corp.	1,375	$5,293

1 filing row on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$89,217	300	—	Shares	Sole	2026-08-04
No filing history on record for this holder in this stock.