HARBOR INVESTMENT ADVISORY, LLC

Position in MTRN — MATERION Corp

CIK 1468792 LUTHERVILLE, MD

Position in MTRN

as of Jun 30, 2026 · filed Jul 7, 2026 Compact

Position Value

$32,118

+$29,879 QoQ

Shares Held

108

+535.3% QoQ

Ownership

0.001%

of shares outstanding

% of Portfolio

0.00%

of 13F equity value

Holder Rank

#333

of 400 holders

Holding Since

Mar 2024

2 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Basic Materials · as of Jun 30, 2026

HARBOR INVESTMENT ADVISORY, LLC holds $777,092 across 5 Other Industrial Metals & Mining names. MTRN ranks #2 (4.1% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	MP	MP Materials Corp. / DE	12,771	$715,303
2	MTRN	MATERION Corp This page	108	$32,118
3	SKE	Skeena Resources Ltd	833	$22,207
4	BHP	BHP Group Ltd	52	$4,332
5	RIO	Rio Tinto PLC	33	$3,132

2 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$32,118	108	+535.3%	Shares	Sole	2026-07-07
2024-03-31	$2,239	17	—	Shares	Sole	2024-04-12
No filing history on record for this holder in this stock.