GAMCO INVESTORS, INC. ET AL

Position in MTRN — MATERION Corp

CIK 807249 GREENWICH, CT

Position in MTRN

as of Jun 30, 2026 · filed Aug 12, 2026 Compact

Position Value

$53,809,746

+$26,146,880 QoQ

Shares Held

180,940

-5.4% QoQ

Ownership

0.868%

of shares outstanding

% of Portfolio

0.49%

of 13F equity value

Holder Rank

#24

of 404 holders

Holding Since

Mar 2020

26 quarters on record

Voting authority Sole 99% Shared 0% None 1%

Basic Materials · as of Jun 30, 2026

GAMCO INVESTORS, INC. ET AL holds $58,158,888 across 3 Other Industrial Metals & Mining names. MTRN ranks #1 (92.5% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	MTRN	MATERION Corp This page	180,940	$53,809,746
2	USAS	Americas Gold & Silver Corp	788,642	$3,722,390
3	WRN	Western Copper & Gold Corp	279,800	$626,752

26 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$53,809,746	180,940	-5.4%	Shares	Sole	2026-08-12
2026-03-31	$27,662,866	191,240	-2.4%	Shares	Sole	2026-05-14
2025-12-31	$24,360,504	195,950	+0.4%	Shares	Sole	2026-02-05
2025-09-30	$23,576,071	195,150	+4.3%	Shares	Sole	2025-11-12
2025-06-30	$14,854,095	187,150	-0.3%	Shares	Sole	2025-08-13
2025-03-31	$15,320,400	187,750	-1.6%	Shares	Sole	2025-05-14
2024-12-31	$18,861,360	190,750	-1.8%	Shares	Sole	2025-02-13
2024-09-30	$21,728,805	194,250	-5.4%	Shares	Sole	2024-11-14
2024-06-30	$22,204,495	205,350	-1.8%	Shares	Sole	2024-08-13
2024-03-31	$27,542,337	209,050	-10.0%	Shares	Sole	2024-05-14
2023-12-31	$30,222,692	232,250	-3.8%	Shares	Sole	2024-02-14
2023-09-30	$24,595,978	241,350	-3.4%	Shares	Sole	2023-11-08
2023-06-30	$28,521,450	249,750	-4.9%	Shares	Sole	2023-08-15
2023-03-31	$30,455,800	262,550	-6.6%	Shares	Sole	2023-05-12
2022-12-31	$24,594,685	281,050	-0.2%	Shares	Sole	2023-02-15
2022-09-30	$22,532,000	281,650	-0.2%	Shares	Sole	2022-11-14
2022-06-30	$20,802,919	282,150	-0.1%	Shares	Sole	2022-08-12
2022-03-31	$24,221,550	282,500	0.0%	Shares	Sole	2022-05-18
2021-12-31	$25,973,050	282,500	-2.1%	Shares	Sole	2022-02-11
2021-09-30	$19,802,914	288,504	-0.1%	Shares	Sole	2021-11-12
2021-06-30	$21,770,800	288,929	-7.2%	Shares	Sole	2021-08-13
2021-03-31	$20,615,808	311,229	-10.9%	Shares	Sole	2021-05-14
2020-12-31	$22,252,871	349,229	-0.3%	Shares	Sole	2021-02-05
2020-09-30	$18,217,211	350,129	-1.5%	Shares	Sole	2020-11-06
2020-06-30	$21,866,089	355,604	+2.1%	Shares	Sole	2020-08-13
2020-03-31	$12,197,624	348,404	—	Shares	Sole	2020-05-14
No filing history on record for this holder in this stock.