MarketPeel
Insider Trading Intelligence
KL

Kang Jyh Lee

PLAB
CHIEF EXECUTIVE OFFICER · PHOTRONICS INC · CIK 0001748668
FILING MIX · LIFETIME29%/71%
BUYS
23
SELLS
56
TOTAL VALUE
$14.31M
COMPANIES
1
ACTIVE SINCE
Jan 2020
HOLDINGS NOW
355,850
AVG SELL PX
$29.17
TRADE KIND
SHOWING 79 / 79
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
43 backtested trades · 8 horizons · 73 pendingHow are these numbers computed? →
Forward-return performance of every backtestable P/S trade by Kang Jyh Lee, measured at 8 horizons from 7 days to 2 years. Deduped per economic event so co-filings count once. Excess return = trade return minus SPY return over the same window.
HORIZONTRADESWIN RATEINSIDER RETURNSPY RETURNMEAN EXCESSMEDIAN EXCESST-STAT
7d43+48.84%+0.50%+0.53%-0.03%-0.07%-0.04
14d43+37.21%+2.89%+1.21%+1.68%+2.50%1.96
30d43+34.88%+5.04%+2.35%+2.69%+1.28%1.79
60d43+66.67%-4.47%+1.81%-6.00%-4.01%-2.55
90d43+65.12%-4.88%+2.13%-7.01%-9.30%-1.79
180d43(11 pending)+62.50%+2.67%+5.88%-3.21%-20.86%-0.52
1y43(24 pending)+10.53%+45.34%+12.58%+32.76%+25.72%
2y43(38 pending)+0.00%+53.54%+3.20%+50.34%+57.85%
How to read this: Insider Returnis the average raw return of the filer's trades over the horizon. SPY Return is what SPY did over those same windows — reference only, not a comparison. The headline alpha number is Mean Excess = Insider − SPY; green means the filer beat SPY, red means they trailed it. Win rate is the share of individual trades where the filer beat SPY. T-statvalues above 2 mean the alpha is unlikely to be chance given the sample size. "Pending" counts trades where the horizon hasn't elapsed yet; their stats are not included in the row average.
Holdings over time
PLAB · 355,850 shares · as of Apr 16, 2026
0147,713295,425443,138590,850202120222023202420252026SHARES HELD
Trading cadence · quarterly flow
BUY SELL
2020
2020
2020
2020
2021
2021
2021
2021
2022
2022
2022
2022
2023
2023
2023
2023
2024
2024
2024
2024
2025
2025
2025
2025
2026
2026
FLOW · 23 buys / 56 sellsCOVERAGE · 26 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
PLAB
PHOTRONICS INC
SALE
10,000$46.05$460.5K365,850Apr 16, 2026Apr 20, 2026View →
PLAB
PHOTRONICS INC
SALE
10,000$45.80$458.0K355,850Apr 16, 2026Apr 20, 2026View →
PLAB
PHOTRONICS INC
SALE
10,000$45.10$451.0K375,850Apr 15, 2026Apr 17, 2026View →
PLAB
PHOTRONICS INC
SALE
5,0000Apr 13, 2026Apr 15, 2026View →
PLAB
PHOTRONICS INC
SALE
5,000$45.00$225.0K385,850Apr 13, 2026Apr 15, 2026View →
PLAB
PHOTRONICS INC
PURCHASE
5,000$8.60$43.0K390,850Apr 13, 2026Apr 15, 2026View →
PLAB
PHOTRONICS INC
SALE
5,0005,000Apr 9, 2026Apr 13, 2026View →
PLAB
PHOTRONICS INC
PURCHASE
5,000$8.60$43.0K390,850Apr 9, 2026Apr 13, 2026View →
PLAB
PHOTRONICS INC
SALE
5,000$44.00$220.0K385,850Apr 9, 2026Apr 13, 2026View →
PLAB
PHOTRONICS INC
SALE
5,000$43.27$216.3K385,850Apr 8, 2026Apr 10, 2026View →
PLAB
PHOTRONICS INC
PURCHASE
5,000$8.60$43.0K390,850Apr 8, 2026Apr 10, 2026View →
PLAB
PHOTRONICS INC
SALE
5,000$40.53$202.7K385,850Apr 6, 2026Apr 8, 2026View →
PLAB
PHOTRONICS INC
PURCHASE
5,000$8.60$43.0K390,850Apr 6, 2026Apr 8, 2026View →
PLAB
PHOTRONICS INC
SALE
5,00015,000Apr 6, 2026Apr 8, 2026View →
PLAB
PHOTRONICS INC
SALE
5,00010,000Apr 6, 2026Apr 10, 2026View →
PLAB
PHOTRONICS INC
SALE
5,0000Apr 1, 2026Apr 3, 2026View →
PLAB
PHOTRONICS INC
SALE
5,000$42.00$210.0K385,850Apr 1, 2026Apr 3, 2026View →
PLAB
PHOTRONICS INC
PURCHASE
5,000$10.75$53.8K390,850Apr 1, 2026Apr 3, 2026View →
PLAB
PHOTRONICS INC
PURCHASE
5,000$10.75$53.8K390,850Mar 26, 2026Mar 30, 2026View →
PLAB
PHOTRONICS INC
SALE
5,0005,000Mar 26, 2026Mar 30, 2026View →
PLAB
PHOTRONICS INC
SALE
5,000$40.80$204.0K385,850Mar 26, 2026Mar 30, 2026View →
PLAB
PHOTRONICS INC
SALE
10,000$39.00$390.0K385,850Mar 23, 2026Mar 25, 2026View →
PLAB
PHOTRONICS INC
SALE
10,000$35.80$358.0K400,850Mar 19, 2026Mar 23, 2026View →
PLAB
PHOTRONICS INC
SALE
10,000$34.51$345.1K410,850Jan 16, 2026Jan 20, 2026View →
PLAB
PHOTRONICS INC
SALE
10,000$34.13$341.3K415,850Jan 15, 2026Jan 16, 2026View →
PLAB
PHOTRONICS INC
SALE
10,000$34.42$344.2K425,850Jan 13, 2026Jan 15, 2026View →
PLAB
PHOTRONICS INC
SALE
10,000$33.05$330.5K435,850Jan 12, 2026Jan 14, 2026View →
PLAB
PHOTRONICS INC
SALE
10,000$34.83$348.3K445,850Jan 7, 2026Jan 9, 2026View →
PLAB
PHOTRONICS INC
SALE
10,000$35.41$354.1K455,850Jan 6, 2026Jan 7, 2026View →
PLAB
PHOTRONICS INC
SALE
10,000$33.90$339.0K465,850Jan 5, 2026Jan 7, 2026View →
PLAB
PHOTRONICS INC
SALE
8,750$33.54$293.5K475,850Jan 2, 2026Jan 6, 2026View →
PLAB
PHOTRONICS INC
SALE
8,750$34.31$300.2K484,600Dec 22, 2025Dec 23, 2025View →
PLAB
PHOTRONICS INC
PURCHASE
20,0000Dec 15, 2025Dec 16, 2025View →
PLAB
PHOTRONICS INC
PURCHASE
20,000$11.35$227.0K513,350Dec 15, 2025Dec 16, 2025View →
PLAB
PHOTRONICS INC
SALE
20,000$36.45$729.0K493,350Dec 15, 2025Dec 16, 2025View →
PLAB
PHOTRONICS INC
SALE
20,000$38.53$770.6K493,350Dec 12, 2025Dec 16, 2025View →
PLAB
PHOTRONICS INC
SALE
10,000$25.33$253.3K513,350Oct 6, 2025Oct 8, 2025View →
PLAB
PHOTRONICS INC
SALE
8,750$23.20$203.0K523,350Aug 29, 2025Sep 3, 2025View →
PLAB
PHOTRONICS INC
PURCHASE
4,882$12.13$59.2K536,982Jun 20, 2025Jun 24, 2025View →
PLAB
PHOTRONICS INC
SALE
4,882$18.35$89.6K532,100Jun 20, 2025Jun 24, 2025View →
PLAB
PHOTRONICS INC
SALE
4,8820Jun 20, 2025Jun 24, 2025View →
PLAB
PHOTRONICS INC
PURCHASE
28,118$12.13$341.1K560,218Jun 18, 2025Jun 20, 2025View →
PLAB
PHOTRONICS INC
SALE
28,1184,882Jun 18, 2025Jun 20, 2025View →
PLAB
PHOTRONICS INC
SALE
28,118$18.40$517.3K532,100Jun 18, 2025Jun 20, 2025View →
PLAB
PHOTRONICS INC
SALE
CHIEF EXECUTIVE OFFICER
10,000$21.60$216.0K532,100Mar 26, 2025Apr 29, 2025View →
PLAB
PHOTRONICS INC
SALE
CHIEF EXECUTIVE OFFICER
10,000$21.60$216.0K542,100Mar 19, 2025Apr 29, 2025View →
PLAB
PHOTRONICS INC
SALE
CHIEF EXECUTIVE OFFICER
10,000$20.90$209.0K552,100Mar 5, 2025Mar 7, 2025View →
PLAB
PHOTRONICS INC
SALE
CHIEF EXECUTIVE OFFICER
10,000$24.47$244.7K562,100Jan 17, 2025Jan 21, 2025View →
PLAB
PHOTRONICS INC
SALE
CHIEF EXECUTIVE OFFICER
8,750$24.40$213.5K572,100Jan 16, 2025Jan 21, 2025View →
PLAB
PHOTRONICS INC
SALE
CHIEF EXECUTIVE OFFICER
10,000$25.02$250.2K580,850Jan 6, 2025Jan 7, 2025View →
PLAB
PHOTRONICS INC
PURCHASEGRANT
Stock grant
80,000590,850Jan 3, 2025Jan 6, 2025View →
PLAB
PHOTRONICS INC
SALE
CHIEF EXECUTIVE OFFICER
8,750$24.20$211.8K510,850Jan 2, 2025Jan 6, 2025View →
PLAB
PHOTRONICS INC
SALE
CHIEF EXECUTIVE OFFICER
8,750$24.00$210.0K519,600Jan 2, 2025Jan 6, 2025View →
PLAB
PHOTRONICS INC
SALE
CHIEF EXECUTIVE OFFICER
17,500$24.00$420.0K528,350Dec 24, 2024Dec 27, 2024View →
PLAB
PHOTRONICS INC
SALE
CHIEF EXECUTIVE OFFICER
8,750$24.33$212.9K545,850Dec 20, 2024Dec 23, 2024View →
PLAB
PHOTRONICS INC
SALE
CHIEF EXECUTIVE OFFICER
10,000$25.29$252.9K534,600Dec 19, 2024Dec 20, 2024View →
PLAB
PHOTRONICS INC
SALE
CHIEF EXECUTIVE OFFICER
30,000Dec 19, 2024Dec 20, 2024View →
PLAB
PHOTRONICS INC
PURCHASE
CHIEF EXECUTIVE OFFICER
30,000$8.23$246.9K554,600Dec 19, 2024Dec 20, 2024View →
PLAB
PHOTRONICS INC
SALE
CHIEF EXECUTIVE OFFICER
10,000$25.25$252.5K524,600Dec 19, 2024Dec 20, 2024View →
PLAB
PHOTRONICS INC
PURCHASEGRANT
Stock grant
120,000544,600Jan 3, 2024Jan 5, 2024View →
PLAB
PHOTRONICS INC
SALE
CHIEF EXECUTIVE OFFICER
30,000Nov 29, 2023Dec 1, 2023View →
PLAB
PHOTRONICS INC
PURCHASE
CHIEF EXECUTIVE OFFICER
30,000$8.86$265.8K424,600Nov 29, 2023Dec 1, 2023View →
PLAB
PHOTRONICS INC
PURCHASEGRANT
Stock grant
120,000394,600Jan 3, 2023Jan 5, 2023View →
PLAB
PHOTRONICS INC
PURCHASE
President, Asia IC Photomask
30,000$5.46$163.8K274,600Nov 28, 2022Nov 30, 2022View →
PLAB
PHOTRONICS INC
SALE
President, Asia IC Photomask
30,0000Nov 28, 2022Nov 30, 2022View →
PLAB
PHOTRONICS INC
PURCHASEGRANT
Stock grant
35,000244,600May 18, 2022May 20, 2022View →
PLAB
PHOTRONICS INC
PURCHASEGRANT
Stock grant
40,000209,600Jan 3, 2022Jan 5, 2022View →
PLAB
PHOTRONICS INC
SALE
President, Asia IC Photomask
7,075$18.85$133.4K169,600Dec 29, 2021Dec 30, 2021View →
PLAB
PHOTRONICS INC
SALE
President, Asia IC Photomask
4,500$16.76$75.4K176,675Dec 15, 2021Dec 17, 2021View →
PLAB
PHOTRONICS INC
SALE
President, Asia IC Photomask
15,000$14.29$214.3K181,175Aug 27, 2021Aug 31, 2021View →
PLAB
PHOTRONICS INC
PURCHASE
President, Asia IC Photomask
15,000$6.32$94.8K196,175Aug 27, 2021Aug 31, 2021View →
PLAB
PHOTRONICS INC
SALE
President, Asia IC Photomask
15,0000Aug 27, 2021Aug 31, 2021View →
PLAB
PHOTRONICS INC
SALE
President, Asia IC Photomask
10,000$12.34$123.4K181,175Mar 18, 2021Mar 22, 2021View →
PLAB
PHOTRONICS INC
SALE
President, Asia IC Photomask
12,000$11.99$143.8K191,175Jan 19, 2021Jan 21, 2021View →
PLAB
PHOTRONICS INC
PURCHASE
President, Asia IC Photomask
12,000$6.71$80.5K203,175Jan 19, 2021Jan 21, 2021View →
PLAB
PHOTRONICS INC
SALE
President, Asia IC Photomask
12,0000Jan 19, 2021Jan 21, 2021View →
PLAB
PHOTRONICS INC
PURCHASEGRANT
Stock grant
35,000191,175Jan 2, 2021Jan 5, 2021View →
PLAB
PHOTRONICS INC
PURCHASEGRANT
Stock grant
6,000156,175Dec 23, 2020Dec 28, 2020View →
PLAB
PHOTRONICS INC
PURCHASEGRANT
Stock grant
35,000150,175Jan 3, 2020Jan 7, 2020View →
Other insiders · PLAB
Loading peer insiders…
About this filer
CIK 0001748668
ROLE
CHIEF EXECUTIVE OFFICER
PRIMARY
PLAB
COMPANIES
1
ACTIVE SINCE
Jan 2020
MARKETPEEL · /INSIDER/0001748668DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
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