Photronics Inc. (PLAB) Insider Trading

Last 12 months

Insiders sold $24.2M and bought nothing on the open market.

1% of the selling was scheduled in advance under 10b5-1 plans. CEO George Macricostas sold $5.2M on Apr 8, 27% of their stake, outside a plan. The last open-market buy by an executive or director was in Jun 2025.

Net open-market

−$24.2M

0 buys · 41 sales

Under a 10b5-1 plan

of the value sold

Insiders who bought / sold

0 / 10

executives and directors

Last open-market buy

Jun 2025

Jun 27, 2025

Get an email when PLAB's executives or directors buy, or make a large sale outside a plan.

Trades · last 2 years

Date	Insider	Trade	Shares	Price	Value	Of their stake	Filing
Sep 29	Kang Jyh Lee Director	SoldNo plan	10,000	$30.75	$308k	2.9%	Form 4
Sep 25	Han Kyung Park SVP & GM of FPD Ops	SoldNo plan	9,500	$30.37	$289k	13%	Form 4
Sep 24	Kang Jyh Lee Director	SoldNo plan	7,500	$29.50	$221k	2.1%	Form 4
Sep 22	Kang Jyh Lee Director	SoldNo plan	10,000	$29.70	$297k	2.7%	Form 4
Apr 17	Rui Zhang VP, CAO & Corporate Controller	SoldNo plan	4,556	$46.70	$213k	14%	Form 4
Apr 16	Kang Jyh Lee Director	SoldNo plan 2 parts	20,000	$45.93 average	$919k	5.3%	Form 4
Apr 15	Kang Jyh Lee Director	SoldNo plan	10,000	$45.10	$451k	2.6%	Form 4
Apr 14	Hsueh-Chun Wang SVP/COO IC & US/EU Mnstrm Ops	SoldNo plan	19,250	$45.30	$872k	14%	Form 4
Apr 14	Constantine S Macricostas Director	SoldNo plan	50,000	$45.35	$2.27M	11%	Form 4
Apr 13	Kang Jyh Lee Director	SoldNo plan	5,000	$45.00	$225k	1.3%	Form 4
Apr 13	Eric Rivera President, CFO	SoldNo plan	1,000	$44.77	$45k	0.7%	Form 4
Apr 9	Hsueh-Chun Wang SVP/COO IC & US/EU Mnstrm Ops	SoldNo plan	11,875	$44.25	$525k	8.2%	Form 4
Apr 9	Eric Rivera President, CFO	SoldNo plan 2 parts	41,517	$44.00 average	$1.83M	23%	Form 4
Apr 9	Kang Jyh Lee Director	SoldNo plan	5,000	$44.00	$220k	1.3%	Form 4
Apr 8	George Macricostas CEO	SoldNo plan 3 parts	121,194	$42.94 average	$5.2M	27%	Form 4
Apr 8	Rui Zhang VP, CAO & Corporate Controller	SoldNo plan	1,752	$43.50	$76k	5.2%	Form 4
Apr 8	Hsueh-Chun Wang SVP/COO IC & US/EU Mnstrm Ops	SoldNo plan	10,000	$42.69	$427k	6.5%	Form 4
Apr 8	Kang Jyh Lee Director	SoldNo plan	5,000	$43.27	$216k	1.3%	Form 4
Apr 6	Kang Jyh Lee Director	SoldNo plan	5,000	$40.53	$203k	1.3%	Form 4
Apr 1	Mitchell G Tyson Director	SoldNo plan	10,000	$42.31	$423k	23%	Form 4
Apr 1	Hsueh-Chun Wang SVP/COO IC & US/EU Mnstrm Ops	SoldNo plan 3 parts	10,000	$42.08 average	$421k	6.1%	Form 4
Apr 1	Kang Jyh Lee Director	SoldNo plan	5,000	$42.00	$210k	1.3%	Form 4
Mar 26	Kang Jyh Lee Director	SoldNo plan	5,000	$40.80	$204k	1.3%	Form 4
Mar 23	Kang Jyh Lee Director	SoldNo plan	10,000	$39.00	$390k	2.5%	Form 4
Mar 19	Kang Jyh Lee Director	SoldNo plan	10,000	$35.80	$358k	2.4%	Form 4
Jan 16	Kang Jyh Lee Director	SoldNo plan	10,000	$34.51	$345k	2.4%	Form 4
Jan 13 – 16	Han Kyung Park SVP & GM of FPD Ops	SoldNo plan 2 parts	13,750	$34.24 average	$471k	15%	Form 4
Jan 15	Kang Jyh Lee Director	SoldNo plan	10,000	$34.13	$341k	2.3%	Form 4
Jan 13	Kang Jyh Lee Director	SoldNo plan	10,000	$34.42	$344k	2.3%	Form 4
Jan 12	Kang Jyh Lee Director	SoldNo plan	10,000	$33.05	$331k	2.2%	Form 4
Jan 7	Kang Jyh Lee Director	SoldNo plan	10,000	$34.83	$348k	2.2%	Form 4
Jan 5 – 6	Kang Jyh Lee Director	SoldNo plan 2 parts	20,000	$34.66 average	$693k	4.2%	Form 4
Jan 6	Mary Paladino Director	SoldNo plan	11,250	$35.11	$395k	32%	Form 4
Jan 6	Mitchell G Tyson Director	SoldNo plan	5,000	$35.21	$176k	10%	Form 4
Jan 2	Kang Jyh Lee Director	SoldNo plan	8,750	$33.54	$293k	1.8%	Form 4
Dec 22, 2025	Kang Jyh Lee Director	SoldNo plan	8,750	$34.31	$300k	1.8%	Form 4
Dec 12, 2025 – Dec 15, 2025	Kang Jyh Lee Director	SoldNo plan 2 parts	40,000	$37.49 average	$1.5M	7.5%	Form 4
Dec 12, 2025	Christopher J Progler EVP, Chief Technology Officer	SoldNo plan	25,000	$35.78	$895k	13%	Form 4
Dec 12, 2025	Mitchell G Tyson Director	SoldNo plan	5,000	$36.17	$181k	9.6%	Form 4
Dec 12, 2025	Han Kyung Park SVP & GM of FPD Ops	SoldNo plan	13,750	$37.99	$522k	13%	Form 4

Sep 29No plan
Kang Jyh Lee
Director · sold 10,000 at $30.75
$308k
2.9% of stake
Sep 25No plan
Han Kyung Park
SVP & GM of FPD Ops · sold 9,500 at $30.37
$289k
13% of stake
Sep 24No plan
Kang Jyh Lee
Director · sold 7,500 at $29.50
$221k
2.1% of stake
Sep 22No plan
Kang Jyh Lee
Director · sold 10,000 at $29.70
$297k
2.7% of stake
Apr 17No plan
Rui Zhang
VP, CAO & Corporate Controller · sold 4,556 at $46.70
$213k
14% of stake
Apr 16No plan
Kang Jyh Lee
Director · sold 20,000 at avg $45.93
$919k
5.3% of stake
Apr 15No plan
Kang Jyh Lee
Director · sold 10,000 at $45.10
$451k
2.6% of stake
Apr 14No plan
Hsueh-Chun Wang
SVP/COO IC & US/EU Mnstrm Ops · sold 19,250 at $45.30
$872k
14% of stake
Apr 14No plan
Constantine S Macricostas
Director · sold 50,000 at $45.35
$2.27M
11% of stake
Apr 13No plan
Kang Jyh Lee
Director · sold 5,000 at $45.00
$225k
1.3% of stake
Apr 13No plan
Eric Rivera
President, CFO · sold 1,000 at $44.77
$45k
0.7% of stake
Apr 9No plan
Hsueh-Chun Wang
SVP/COO IC & US/EU Mnstrm Ops · sold 11,875 at $44.25
$525k
8.2% of stake
Apr 9No plan
Eric Rivera
President, CFO · sold 41,517 at avg $44.00
$1.83M
23% of stake
Apr 9No plan
Kang Jyh Lee
Director · sold 5,000 at $44.00
$220k
1.3% of stake
Apr 8No plan
George Macricostas
CEO · sold 121,194 at avg $42.94
$5.2M
27% of stake
Apr 8No plan
Rui Zhang
VP, CAO & Corporate Controller · sold 1,752 at $43.50
$76k
5.2% of stake
Apr 8No plan
Hsueh-Chun Wang
SVP/COO IC & US/EU Mnstrm Ops · sold 10,000 at $42.69
$427k
6.5% of stake
Apr 8No plan
Kang Jyh Lee
Director · sold 5,000 at $43.27
$216k
1.3% of stake
Apr 6No plan
Kang Jyh Lee
Director · sold 5,000 at $40.53
$203k
1.3% of stake
Apr 1No plan
Mitchell G Tyson
Director · sold 10,000 at $42.31
$423k
23% of stake
Apr 1No plan
Hsueh-Chun Wang
SVP/COO IC & US/EU Mnstrm Ops · sold 10,000 at avg $42.08
$421k
6.1% of stake
Apr 1No plan
Kang Jyh Lee
Director · sold 5,000 at $42.00
$210k
1.3% of stake
Mar 26No plan
Kang Jyh Lee
Director · sold 5,000 at $40.80
$204k
1.3% of stake
Mar 23No plan
Kang Jyh Lee
Director · sold 10,000 at $39.00
$390k
2.5% of stake
Mar 19No plan
Kang Jyh Lee
Director · sold 10,000 at $35.80
$358k
2.4% of stake
Jan 16No plan
Kang Jyh Lee
Director · sold 10,000 at $34.51
$345k
2.4% of stake
Jan 13 – 16No plan
Han Kyung Park
SVP & GM of FPD Ops · sold 13,750 at avg $34.24
$471k
15% of stake
Jan 15No plan
Kang Jyh Lee
Director · sold 10,000 at $34.13
$341k
2.3% of stake
Jan 13No plan
Kang Jyh Lee
Director · sold 10,000 at $34.42
$344k
2.3% of stake
Jan 12No plan
Kang Jyh Lee
Director · sold 10,000 at $33.05
$331k
2.2% of stake
Jan 7No plan
Kang Jyh Lee
Director · sold 10,000 at $34.83
$348k
2.2% of stake
Jan 5 – 6No plan
Kang Jyh Lee
Director · sold 20,000 at avg $34.66
$693k
4.2% of stake
Jan 6No plan
Mary Paladino
Director · sold 11,250 at $35.11
$395k
32% of stake
Jan 6No plan
Mitchell G Tyson
Director · sold 5,000 at $35.21
$176k
10% of stake
Jan 2No plan
Kang Jyh Lee
Director · sold 8,750 at $33.54
$293k
1.8% of stake
Dec 22, 2025No plan
Kang Jyh Lee
Director · sold 8,750 at $34.31
$300k
1.8% of stake
Dec 12, 2025 – Dec 15, 2025No plan
Kang Jyh Lee
Director · sold 40,000 at avg $37.49
$1.5M
7.5% of stake
Dec 12, 2025No plan
Christopher J Progler
EVP, Chief Technology Officer · sold 25,000 at $35.78
$895k
13% of stake
Dec 12, 2025No plan
Mitchell G Tyson
Director · sold 5,000 at $36.17
$181k
9.6% of stake
Dec 12, 2025No plan
Han Kyung Park
SVP & GM of FPD Ops · sold 13,750 at $37.99
$522k
13% of stake

How to read this. Insiders sell for many reasons: taxes, diversifying, a house. Open-market buys are rarer and say more. A 10b5-1 plan is a trading schedule set up months in advance, so those sales were not timed on news. Large holders (funds and 10% owners) are listed under Everything but not counted as insiders. If you own or watch PLAB, we send a push when an executive buys or makes a large sale outside a plan.

Source: SEC Form 4 filings, filed within two business days of each trade and checked for new ones every hour.

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Spot a number that looks wrong? Check it in PLAB's SEC filings or

Download this analysis as a PDF (Pro)

Data sourced from SEC EDGAR filings and third-party price providers. Scores, valuations, and metrics are algorithmic estimates. This is not investment advice. See our Terms and Methodology.

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