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Home›PLAB›Insider trades
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Insider trading · SEC Form 4

Photronics Inc (PLAB) insider trading — SEC Form 4 history

As of the latest Form 4 filed Apr 21, 2026.

Our verdictBuy→

What Photronics Inc insiders — officers, directors and 10% owners — have bought and sold in their own stock, straight from their SEC Form 4 filings. Values are shares × the reported transaction price where both are disclosed.

Insider buys · 12m
0
Insider sells · 12m
40
Distinct insiders · 12m
15
Last sale
Apr 21, 2026
83 days ago
Bought · 12m
—
Sold · 12m
$21.7M
Net disclosed value · 12m
−$21.7M

Insider buying vs selling

Buy / sell pressure · 12m
by trade count
0 up40 down
Disclosed value by month
BoughtSold
$20.0M0$20.0MDec '25Feb '26Apr '26Jul '26

Buys plotted up, sells down; bar height is the disclosed dollar value (shares × reported price). Our Form 4 history is only complete from mid-2026, so early months are sparse — the series fills in as more filings land. Open-market purchases and sales only.

Form 4 transactions

Newest filing first — the 70 most recent filings for PLAB.

Form 4 insider transactions for PLAB
FiledTrade dateInsiderTransactionSharesPriceValue10b5-1Filing
2026-04-212026-04-17
ZHANG RUI
VP, CAO & Corporate Controller
SSale−4.56K$46.70$213KNoForm 4 ↗
2026-04-212026-04-17
Paladino Mary
Director
DDisposition−22.5K$47.77$1.08MNoForm 4 ↗
2026-04-202026-04-16
Lee Kang Jyh
Director
SSale−10.0K$45.80$458KNoForm 4 ↗
2026-04-202026-04-16Lee Kang Jyh, Director〃SSale−10.0K$46.05$461KNoForm 4 ↗
2026-04-172026-04-15
Lee Kang Jyh
Director
SSale−10.0K$45.10$451KNoForm 4 ↗
2026-04-162026-04-14
Wang Hsueh-Chun
SVP/COO IC & US/EU Mnstrm Ops
SSale−19.3K$45.30$872KNoForm 4 ↗
2026-04-152026-04-13
TYSON MITCHELL G
Director
AAward+3.72K$0.00$0.00NoForm 4 ↗
2026-04-152026-04-13
Garcia David A.
Director
AAward+3.72K$0.00$0.00NoForm 4 ↗
2026-04-152026-04-13
Almeida Michelle
Director
AAward+3.72K$0.00$0.00NoForm 4 ↗
2026-04-152026-04-13
Liao Daniel JL
Director
AAward+3.72K$0.00$0.00NoForm 4 ↗
2026-04-152026-04-13
LEWIS ADAM M
Director
AAward+3.72K$0.00$0.00NoForm 4 ↗
2026-04-152026-04-13
MACRICOSTAS CONSTANTINE S
Director
AAward+3.72K$0.00$0.00NoForm 4 ↗
2026-04-152026-04-13
Lee Kang Jyh
Director
SSale−5.00K$45.00$225KNoForm 4 ↗
2026-04-152026-04-13Lee Kang Jyh, Director〃MExercise+5.00K$8.60$43.0KNoForm 4 ↗
2026-04-152026-04-13
Rivera Eric
President, CFO
SSale−1.00K$44.77$44.8KNoForm 4 ↗
2026-04-152026-04-13Rivera Eric, President, CFO〃MExercise+1.00K$9.78$9.78KNoForm 4 ↗
2026-04-142026-04-14
MACRICOSTAS CONSTANTINE S
Director
SSale−50.0K$45.35$2.27MNoForm 4 ↗
2026-04-142026-04-02
MACRICOSTAS CONSTANTINE S
Director
GGift−37.0K$0.00$0.00NoForm 4 ↗
2026-04-142026-04-01MACRICOSTAS CONSTANTINE S, Director〃GGift−13.0K$0.00$0.00NoForm 4 ↗
2026-04-132026-04-09
Wang Hsueh-Chun
SVP/COO IC & US/EU Mnstrm Ops
SSale−11.9K$44.25$525KNoForm 4 ↗
2026-04-132026-04-09
Rivera Eric
President, CFO
SSale−40.6K$44.00$1.79MNoForm 4 ↗
2026-04-132026-04-09Rivera Eric, President, CFO〃SSale−882.00$44.00$38.8KNoForm 4 ↗
2026-04-132026-04-09
Lee Kang Jyh
Director
SSale−5.00K$44.00$220KNoForm 4 ↗
2026-04-132026-04-09Lee Kang Jyh, Director〃MExercise+5.00K$8.60$43.0KNoForm 4 ↗
2026-04-102026-04-08
MACRICOSTAS GEORGE
CEO
SSale−109K$42.90$4.68MNoForm 4 ↗
2026-04-102026-04-08MACRICOSTAS GEORGE, CEO〃SSale−5.50K$43.28$238KNoForm 4 ↗
2026-04-102026-04-08MACRICOSTAS GEORGE, CEO〃SSale−6.50K$43.27$281KNoForm 4 ↗
2026-04-102026-04-08
ZHANG RUI
VP, CAO & Corporate Controller
SSale−1.75K$43.50$76.2KNoForm 4 ↗
2026-04-102026-04-08
Wang Hsueh-Chun
SVP/COO IC & US/EU Mnstrm Ops
SSale−10.0K$42.69$427KNoForm 4 ↗
2026-04-102026-04-08
Lee Kang Jyh
Director
SSale−5.00K$43.27$216KNoForm 4 ↗
2026-04-102026-04-08Lee Kang Jyh, Director〃MExercise+5.00K$8.60$43.0KNoForm 4 ↗
2026-04-082026-04-06
Lee Kang Jyh
Director
SSale−5.00K$40.53$203KNoForm 4 ↗
2026-04-082026-04-06Lee Kang Jyh, Director〃MExercise+5.00K$8.60$43.0KNoForm 4 ↗
2026-03-302026-03-26
Lee Kang Jyh
Director
SSale−5.00K$40.80$204KNoForm 4 ↗
2026-03-302026-03-26Lee Kang Jyh, Director〃MExercise+5.00K$10.75$53.8KNoForm 4 ↗
2026-03-252026-03-23
Lee Kang Jyh
Director
SSale−10.0K$39.00$390KNoForm 4 ↗
2026-03-242026-03-19
Lee Kang Jyh
Director
SSale−10.0K$35.80$358KNoForm 4 ↗
2026-02-112026-02-09
ZHANG RUI
VP, CAO & Corporate Controller
AAward+1.47K$0.00$0.00NoForm 4 ↗
2026-02-112026-02-09
Alesio Todd Anthony
SVP, CAO
AAward+983.00$0.00$0.00NoForm 4 ↗
2026-02-112026-02-09
Rivera Eric
President, CFO
AAward+22.6K$0.00$0.00NoForm 4 ↗
2026-01-222026-01-20
Liao Daniel JL
Director
AAward+1.23K$0.00$0.00NoForm 4 ↗
2026-01-222026-01-20
Almeida Michelle
Director
AAward+1.23K$0.00$0.00NoForm 4 ↗
2026-01-202026-01-16
Lee Kang Jyh
Director
SSale−10.0K$34.51$345KNoForm 4 ↗
2026-01-202026-01-16
Park Han Kyung
SVP & GM of FPD Ops
SSale−6.25K$34.89$218KNoForm 4 ↗
2026-01-202026-01-13Park Han Kyung, SVP & GM of FPD Ops〃SSale−7.50K$33.70$253KNoForm 4 ↗
2026-01-162026-01-15
Lee Kang Jyh
Director
SSale−10.0K$34.13$341KNoForm 4 ↗
2026-01-152026-01-13
Lee Kang Jyh
Director
SSale−10.0K$34.42$344KNoForm 4 ↗
2026-01-142026-01-12
Lee Kang Jyh
Director
SSale−10.0K$33.05$331KNoForm 4 ↗
2026-01-092026-01-07
Lee Kang Jyh
Director
SSale−10.0K$34.83$348KNoForm 4 ↗
2026-01-072026-01-06
Lee Kang Jyh
Director
SSale−10.0K$35.41$354KNoForm 4 ↗
2026-01-072026-01-06
Paladino Mary
Director
SSale−11.3K$35.11$395KNoForm 4 ↗
2026-01-072026-01-06
TYSON MITCHELL G
Director
SSale−5.00K$35.21$176KNoForm 4 ↗
2026-01-072026-01-05
Lee Kang Jyh
Director
SSale−10.0K$33.90$339KNoForm 4 ↗
2026-01-072026-01-03
Paladino Mary
Director
AAward+1.27K$0.00$0.00NoForm 4 ↗
2026-01-072026-01-03
TYSON MITCHELL G
Director
AAward+1.27K$0.00$0.00NoForm 4 ↗
2026-01-072026-01-03
LEWIS ADAM M
Director
AAward+1.27K$0.00$0.00NoForm 4 ↗
2026-01-072026-01-03
Garcia David A.
Director
AAward+1.27K$0.00$0.00NoForm 4 ↗
2026-01-072026-01-03
MACRICOSTAS CONSTANTINE S
Director
AAward+1.27K$0.00$0.00NoForm 4 ↗
2026-01-072026-01-03
Park Han Kyung
SVP & GM of FPD Ops
AAward+23.9K$0.00$0.00NoForm 4 ↗
2026-01-072026-01-03
Wang Hsueh-Chun
SVP/COO IC & US/EU Mnstrm Ops
AAward+28.4K$0.00$0.00NoForm 4 ↗
2026-01-072026-01-03
Rivera Eric
EVP, CFO
AAward+40.4K$0.00$0.00NoForm 4 ↗
2026-01-072026-01-03
MACRICOSTAS GEORGE
CEO
AAward+177K$0.00$0.00NoForm 4 ↗
2025-12-232025-12-22
Lee Kang Jyh
Director
SSale−8.75K$34.31$300KNoForm 4 ↗
2025-12-162025-12-15
Lee Kang Jyh
Director
SSale−20.0K$36.45$729KNoForm 4 ↗
2025-12-162025-12-15Lee Kang Jyh, Director〃MExercise+20.0K$11.35$227KNoForm 4 ↗
2025-12-162025-12-12
Progler Christopher J
EVP, Chief Technology Officer
SSale−25.0K$35.78$895KNoForm 4 ↗
2025-12-162025-12-12
TYSON MITCHELL G
Director
SSale−5.00K$36.17$181KNoForm 4 ↗
2025-12-162025-12-12
Park Han Kyung
SVP & GM of FPD Ops
SSale−13.8K$37.99$522KNoForm 4 ↗
2025-12-162025-12-12
Lee Kang Jyh
Director
SSale−20.0K$38.53$771KNoForm 4 ↗
2025-12-022025-12-01
Progler Christopher J
EVP, Chief Technology Officer
SSale−10.0K$22.52$225KYes (planned)Form 4 ↗

How to read a Form 4

Insiders — a company’s officers, directors and holders of more than 10% of its stock — must report any trade in that stock to the SEC on a Form 4 within two business days. Each row here is one transaction from those filings.

The transaction code tells you what happened: Purchase (P) and Sale (S) are open-market trades — the ones markets watch most; Award (A) is a granted stock or unit, Option exercise (M) converts options into shares, and Gift (G) is a transfer for no consideration. Awards, exercises and gifts are largely compensation or administrative, not a directional bet.

One caveat on sales: many are made under a Rule 10b5-1 plan scheduled months in advance, so a sale is not automatically a bearish signal. Insider activity is a noisy input — read it alongside the filings, not on its own.

See also PLAB’s full analysis or the market-wide insider trading feed. The tabs above jump to PLAB’s other SEC data.

Source: SEC Form 4 filings for PLAB, parsed from EDGAR. Transaction prices are as reported in the filing — SEC public-domain data, not market quotes. Values are shares × reported price where both are disclosed; grants and gifts often carry no price. A delayed record of what insiders reported, not a live position or a recommendation.

Research and education only — not financial advice. TENKis not a registered investment adviser or broker-dealer and gives no personalized advice. Every call is impersonal — identical for all users, generated on a schedule from SEC filings plus a delayed/third-party price feed — may be wrong or out of date, and is not a recommendation to buy or sell any security. The operator and an affiliated trading operation may hold or trade the securities TENK rates; see Disclosures. Past performance does not guarantee future results. Do your own research.

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Intraday
NVDA$203.53▼3.52%AAPL$317.31▲0.63%GOOGL$352.51▼1.31%GOOG$350.67▼1.23%MSFT$390.99▲1.53%AMZN$247.31▲0.80%TSM$421.58▼2.89%SPCX$139.14▼4.24%AVGO$384.05▼3.98%META$656.73▼1.86%TSLA$394.76▼3.19%MU$937.00▼4.32%BRK-B$496.85▲0.64%BRK-A$744,850.01▲0.69%LLY$1,181.87▼0.56%AMD$534.39▼4.21%WMT$114.78▲0.77%JPM$334.53▼0.58%ASML$1,726.04▼3.97%V$357.75▲2.52%JNJ$257.77▲0.31%XOM$144.51▲4.05%INTC$103.12▼6.12%AMAT$575.39▼4.50%CSCO$119.25▼1.70%MA$537.70▲2.08%CAT$931.47▼2.20%ABBV$248.00▼0.03%LRCX$329.92▼5.83%BAC$59.50▼0.28%
NVDA$203.53▼3.52%AAPL$317.31▲0.63%GOOGL$352.51▼1.31%GOOG$350.67▼1.23%MSFT$390.99▲1.53%AMZN$247.31▲0.80%TSM$421.58▼2.89%SPCX$139.14▼4.24%AVGO$384.05▼3.98%META$656.73▼1.86%TSLA$394.76▼3.19%MU$937.00▼4.32%BRK-B$496.85▲0.64%BRK-A$744,850.01▲0.69%LLY$1,181.87▼0.56%AMD$534.39▼4.21%WMT$114.78▲0.77%JPM$334.53▼0.58%ASML$1,726.04▼3.97%V$357.75▲2.52%JNJ$257.77▲0.31%XOM$144.51▲4.05%INTC$103.12▼6.12%AMAT$575.39▼4.50%CSCO$119.25▼1.70%MA$537.70▲2.08%CAT$931.47▼2.20%ABBV$248.00▼0.03%LRCX$329.92▼5.83%BAC$59.50▼0.28%