Photronics, Inc. (PLAB) ownership: Top institutional holder: BlackRock, Inc. ($379.33M). Insider activity: Net Seller (0 buys, 20 sells). SEC EDGAR first-party data.
| Holder | Shares | Market Value | Reported |
|---|---|---|---|
| BlackRock, Inc. | 9387060.00 | $379.33M | 2026-03-31 |
| VANGUARD GROUP INC | 5670667.00 | $181.46M | 2025-12-31 |
| DIMENSIONAL FUND ADVISORS LP | 3962665.00 | $160.12M | 2026-03-31 |
| LSV ASSET MANAGEMENT | 2882518.00 | $116.48M | 2026-03-31 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 2844737.00 | $114.96M | 2026-03-31 |
| AMERICAN CENTURY COMPANIES INC | 2819927.00 | $113.95M | 2026-03-31 |
| VANGUARD CAPITAL MANAGEMENT LLC | 2503091.00 | $101.15M | 2026-03-31 |
| STATE STREET CORP | 2239770.00 | $90.51M | 2026-03-31 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Sell | null | 2026-04-17 | |
| Sell | null | 2026-04-17 | |
| Sell | null | 2026-04-16 | |
| Sell | null | 2026-04-16 | |
| Sell | null | 2026-04-15 | |
| Sell | null | 2026-04-14 | |
| Sell | null | 2026-04-14 | |
| Sell | null | 2026-04-13 |
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Institutional data from SEC Form 13F. Insider data from SEC Form 4. Congressional data from STOCK Act disclosures. Not personalized investment advice.