PLAB (Photronics Inc)
Insider Trading Activity
Every open-market purchase and sale reported by PLAB officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.
Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-04-21 | RUI ZHANG | VP, CAO & Corporate Controller | Sell | — | — |
| 2026-04-21 | Mary Paladino | Director | D | — | — |
| 2026-04-20 | Kang Jyh Lee | Director | Sell | — | — |
| 2026-04-17 | Kang Jyh Lee | Director | Sell | — | — |
| 2026-04-16 | Hsueh-Chun Wang | SVP/COO IC & US/EU Mnstrm Ops | Sell | — | — |
| 2026-04-15 | ADAM M LEWIS | Director | A | — | — |
| 2026-04-15 | David A. Garcia | Director | A | — | — |
| 2026-04-15 | Kang Jyh Lee | Director | MIXED | — | — |
| 2026-04-15 | Michelle Almeida | Director | A | — | — |
| 2026-04-15 | MITCHELL G TYSON | Director | A | — | — |
| 2026-04-15 | Daniel JL Liao | Director | A | — | — |
| 2026-04-15 | CONSTANTINE S MACRICOSTAS | Director | A | — | — |
| 2026-04-15 | Eric Rivera | President, CFO | MIXED | — | — |
| 2026-04-14 | CONSTANTINE S MACRICOSTAS | Director | G | — | — |
| 2026-04-14 | CONSTANTINE S MACRICOSTAS | Director | Sell | — | — |
| 2026-04-13 | Eric Rivera | President, CFO | Sell | — | — |
| 2026-04-13 | Hsueh-Chun Wang | SVP/COO IC & US/EU Mnstrm Ops | Sell | — | — |
| 2026-04-13 | Kang Jyh Lee | Director | MIXED | — | — |
| 2026-04-10 | Hsueh-Chun Wang | SVP/COO IC & US/EU Mnstrm Ops | Sell | — | — |
| 2026-04-10 | GEORGE MACRICOSTAS | CEO | Sell | — | — |
| 2026-04-10 | Kang Jyh Lee | Director | MIXED | — | — |
| 2026-04-10 | RUI ZHANG | VP, CAO & Corporate Controller | Sell | — | — |
| 2026-04-08 | Kang Jyh Lee | Director | MIXED | — | — |
| 2026-04-03 | MITCHELL G TYSON | Director | Sell | — | — |
| 2026-04-03 | Kang Jyh Lee | Director | MIXED | — | — |
| 2026-04-03 | Hsueh-Chun Wang | SVP/COO IC & US/EU Mnstrm Ops | Sell | — | — |
| 2026-03-30 | Kang Jyh Lee | Director | MIXED | — | — |
| 2026-03-25 | Kang Jyh Lee | Director | Sell | — | — |
| 2026-03-24 | Kang Jyh Lee | Director | Sell | — | — |
| 2026-02-11 | RUI ZHANG | VP, CAO & Corporate Controller | A | — | — |
| 2026-02-11 | Eric Rivera | President, CFO | A | — | — |
| 2026-02-11 | Todd Anthony Alesio | SVP, CAO | A | — | — |
| 2026-01-22 | Michelle Almeida | Director | A | — | — |
| 2026-01-22 | Daniel JL Liao | Director | A | — | — |
| 2026-01-20 | Kang Jyh Lee | Director | Sell | — | — |
| 2026-01-20 | Han Kyung Park | SVP & GM of FPD Ops | Sell | — | — |
| 2026-01-16 | Kang Jyh Lee | Director | Sell | — | — |
| 2026-01-15 | Kang Jyh Lee | Director | Sell | — | — |
| 2026-01-14 | Kang Jyh Lee | Director | Sell | — | — |
| 2026-01-09 | Kang Jyh Lee | Director | Sell | — | — |
| 2026-01-07 | Han Kyung Park | SVP & GM of FPD Ops | A | — | — |
| 2026-01-07 | Eric Rivera | EVP, CFO | A | — | — |
| 2026-01-07 | David A. Garcia | Director | A | — | — |
| 2026-01-07 | ADAM M LEWIS | Director | A | — | — |
| 2026-01-07 | Hsueh-Chun Wang | SVP/COO IC & US/EU Mnstrm Ops | A | — | — |
| 2026-01-07 | Kang Jyh Lee | Director | Sell | — | — |
| 2026-01-07 | MITCHELL G TYSON | Director | MIXED | — | — |
| 2026-01-07 | CONSTANTINE S MACRICOSTAS | Director | A | — | — |
| 2026-01-07 | Mary Paladino | Director | MIXED | — | — |
| 2026-01-07 | GEORGE MACRICOSTAS | CEO | A | — | — |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| — | 10%+ Owner | 5,363,500 | — |
| — | CEO | 448,762 | — |
| — | Chief Executive Officer | 438,571 | — |
| — | Director | 414,617 | — |
| — | Director | 365,850 | — |
| — | EVP, CAO, GC & Secretary | 269,354 | — |
| — | Director | 202,400 | — |
| — | President and COO Asia | 179,400 | — |
| — | EVP, Chief Technology Officer | 165,591 | — |
| — | Consultant/ Former SVP & CFO | 152,858 | — |
| — | EVP, CFO | 138,756 | — |
| — | President, CFO | 137,173 | — |
| — | Chief Executive Officer | 128,359 | — |
| — | SVP/COO IC & US/EU Mnstrm Ops | 113,560 | — |
| — | Director | 90,000 | — |
| — | SVP & GM of FPD Ops | 81,750 | — |
| — | Director | 72,504 | — |
| — | Director | 56,000 | — |
| — | Director | 36,921 | — |
| — | Director | 34,792 | — |
| — | VP, CAO & Corporate Controller | 27,079 | — |
| — | SVP, CAO | 17,946 | — |
| — | Director | 15,192 | — |
| — | Director | 5,000 | — |
| — | Director | 4,956 | — |
Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.
Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.
Full filing history and per-insider positions are on the PLAB quote page; the site-wide leaderboard is on the insider transactions hub.