$PLAB

$28.82 +$0.95 (3.41%) Close

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

Ownership

13F as of Q2 2026 · 59.0M shares outstanding

Who owns PLAB?

By type of holder

Institutions 92.9% Insiders 7.1% Everyone else 0.0%

Concentration Top 10 holders own 59.9%

BlackRock, Inc. 16.1% · Macricostas Constantine S 8.8%

Institutional ownership

92.9%

-1.5 pts vs last qtr

Institutional holders

312

-19 vs last qtr

Net shares bought

−878.2K

by institutions in Q2 2026

New / sold out

59 / 78

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

Price T Rowe Associates Inc /MD/ +668.3K
American Century Companies Inc +567.5K

Biggest sellers in Q2 2026

Janus Henderson Group PLC SOLD OUT −823.5K
LSV Asset Management −697.3K

Who is planning to sell?

Notices of proposed sale, last 12 months

$27.8M

49 notices from 11 people

Shares covered

704.5K

1.19% 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

Lee Kang Jyh Officer $8.72M
George Macricostas 2013 Tr Dtd 12/24/13 Officer $4.76M

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

−21.5%

−2.66% a year

Each share's claim on the business

+27.4%

grew without buying or selling a share

Spent on buybacks vs paid in stock

$227M vs $66.2M

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+ years81% 3–5 years6% 1–3 years5% Under 1 year9%

Quarterly turnover

11.3%

of institutional shares changed hands

Top 10 managers, median time held

5 years

Super Investors

Investment managers reporting PLAB on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
B BlackRock, Inc.	9.5M	16.08%	+99.1K (+1.1%)	≤2021	0.0%
Shares held by quarter Peak holding10.3M (Q4'24) Change over 8 quarters−762.3K Share of the company16.080% BlackRock, Inc.'s full portfolio →
DF Dimensional Fund Advisors LP	3.6M	6.17%	−320.1K (−8.1%)	≤2021	0.0%
Shares held by quarter Peak holding4.6M (Q3'24) Change over 8 quarters−910.0K Share of the company6.170% Dimensional Fund Advisors LP's full portfolio →

BlackRock, Inc.

9.5M

% of company

16.08%

Change vs last qtr

+99.1K (+1.1%)

Held since

≤2021

Dimensional Fund Advisors LP

3.6M

% of company

6.17%

Change vs last qtr

−320.1K (−8.1%)

Held since

≤2021

28 more super investors behind a free account

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

Institutional Funds

Mutual funds and ETFs reporting PLAB on Form N-PORT; together they hold 58.2% of the company

Fund	Position value	Shares	% of company	% of the fund	As of
IC iShares Core S&P Small-Cap ETF iShares Trust	$116M	3.6M	6.02%	0.10%	June 30, 2026
AU Avantis U.S. Small Cap Value ETF American Century ETF Trust	$88.1M	2.7M	4.62%	0.33%	May 31, 2026

iShares Core S&P Small-Cap ETF

iShares Trust

Position value

$116M

% of company

6.02%

% of the fund

0.10%

As of

June 30, 2026

Avantis U.S. Small Cap Value ETF

American Century ETF Trust

Position value

$88.1M

% of company

4.62%

% of the fund

0.33%

As of

May 31, 2026

23 more funds behind a free account

See every fund holding Photronics, Inc. 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
MC Macricostas Constantine S Insider	5.2M	8.77%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company8.770% Macricostas Constantine S's insider activity →
LK Lee Kang Jyh Insider	337.4K	0.57%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company0.570% Lee Kang Jyh's insider activity →

Macricostas Constantine S

Insider

5.2M

% of company

8.77%

Change vs last qtr

—

Held since

—

Lee Kang Jyh

Insider

337.4K

% of company

0.57%

Change vs last qtr

—

Held since

—

14 more holders behind a free account

See every insider and 5%+ holder of Photronics, Inc..

Comments