$MTRN

$235.63 +$9.08 (4.01%) Close

$MTRN Overview Financial Statements SEC Filings Executives News Red Flags Capital Raising Ownership Insider Transactions Congressional Trades

Ownership

13F as of Q2 2026 · 20.8M shares outstanding

Who owns MTRN?

By type of holder

Institutions 97.5% Insiders 2.5% Everyone else 0.0%

Concentration Top 10 holders own 52.8%

BlackRock, Inc. 16.7% · State Street Corp 7.0%

Institutional ownership

97.5%

+1.6 pts vs last qtr

Institutional holders

404

+70 vs last qtr

Net shares bought

+328.9K

by institutions in Q2 2026

New / sold out

106 / 36

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

Price T Rowe Associates Inc /MD/ +304.9K
Capital Research Global Investors +210.6K

Biggest sellers in Q2 2026

Capital World Investors SOLD OUT −415.0K
ACK Asset Management LLC −339.8K

Who is planning to sell?

Notices of proposed sale, last 12 months

$21.9M

24 notices from 10 people

Shares covered

108.2K

0.52% of the company

Arranged in advance

of the value is under a 10b5-1 plan

Under a 10b5-1 plan No plan

Largest proposed sellers

Reddy N Mohan Former director $6.64M
Jugal Vijayvargiya Officer $5.69M

Every notice on Red Flags →

A Form 144 is notice of a planned sale, not the sale itself. What insiders actually sold is on Insider Transactions.

Is your stake being diluted?

Diluted share count, FY2016–FY2025

+3.5%

+0.38% a year

Each share's claim on the business

−3.3%

shrank without buying or selling a share

Spent on buybacks vs paid in stock

$20.1M vs $73M

over 10 fiscal years

Diluted shares, split-adjusted

Buybacks Stock-based comp

How patient are the owners?

Institutional shares by how long they've been held

5+ years70% 3–5 years12% 1–3 years7% Under 1 year11%

Quarterly turnover

14.6%

of institutional shares changed hands

Top 10 managers, median time held

5 years

Super Investors

Investment managers reporting MTRN on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
B BlackRock, Inc.	3.5M	16.67%	+104.6K (+3.1%)	≤2021	0.0%
Shares held by quarter Peak holding3.5M (Q4'24) Change over 8 quarters+88.5K Share of the company16.670% BlackRock, Inc.'s full portfolio →
SS State Street Corp	1.5M	6.99%	+128.0K (+9.6%)	≤2021	0.0%
Shares held by quarter Peak holding1.5M (Q2'26) Change over 8 quarters+489.5K Share of the company6.990% State Street Corp's full portfolio →

BlackRock, Inc.

3.5M

% of company

16.67%

Change vs last qtr

+104.6K (+3.1%)

Held since

≤2021

State Street Corp

1.5M

% of company

6.99%

Change vs last qtr

+128.0K (+9.6%)

Held since

≤2021

28 more super investors behind a free account

See every manager holding Materion Corporation, how their position has changed, and how long they've held it.

Institutional Funds

Mutual funds and ETFs reporting MTRN on Form N-PORT; together they hold 56.9% of the company

Fund	Position value	Shares	% of company	% of the fund	As of
IC iShares Core S&P Small-Cap ETF iShares Trust	$373M	1.3M	6.02%	0.33%	June 30, 2026
SW SMALLCAP World Fund Inc SMALLCAP World Fund Inc	$290M	974.0K	4.68%	0.31%	June 30, 2026

iShares Core S&P Small-Cap ETF

iShares Trust

Position value

$373M

% of company

6.02%

% of the fund

0.33%

As of

June 30, 2026

SMALLCAP World Fund Inc

Position value

$290M

% of company

4.68%

% of the fund

0.31%

As of

June 30, 2026

23 more funds behind a free account

See every fund holding Materion Corporation and how much of the fund the position is.

Insiders and 5%+ holders

From Forms 3/4/5 and Schedules 13D/G

Holder	Shares	% of company	Change vs last qtr	8 quarters	Held since	% of their book
SC Shular Craig S Insider	188.0K	0.90%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company0.900% Shular Craig S's insider activity →
RN Reddy N Mohan Insider	154.0K	0.74%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company0.740% Reddy N Mohan's insider activity →

Shular Craig S

Insider

188.0K

% of company

0.90%

Change vs last qtr

—

Held since

—

Reddy N Mohan

Insider

154.0K

% of company

0.74%

Change vs last qtr

—

Held since

—

10 more holders behind a free account

See every insider and 5%+ holder of Materion Corporation.

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