Perma-Fix Environmental Services, Inc. (PESI) ownership: Top institutional holder: BlackRock, Inc. ($12.51M). Insider activity: Net Seller (0 buys, 9 sells). SEC EDGAR first-party data.
| Holder | Shares | Market Value | Reported |
|---|---|---|---|
| BlackRock, Inc. | 1170303.00 | $12.51M | 2026-03-31 |
| VANGUARD GROUP INC | 968107.00 | $12.19M | 2025-12-31 |
| MAK CAPITAL ONE LLC | 918673.00 | $9.82M | 2026-03-31 |
| Prescott Group Capital Management, L.L.C. | 777142.00 | $8.31M | 2026-03-31 |
| VANGUARD CAPITAL MANAGEMENT LLC | 759435.00 | $8.12M | 2026-03-31 |
| GEODE CAPITAL MANAGEMENT, LLC | 432701.00 | $4.63M | 2026-03-31 |
| HEARTLAND ADVISORS INC | 400000.00 | $4.28M | 2026-03-31 |
| DIAMOND HILL CAPITAL MANAGEMENT INC | 355978.00 | $3.81M | 2026-03-31 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Sell | null | 2026-04-01 | |
| Sell | null | 2026-04-01 | |
| Sell | null | 2026-04-01 | |
| Sell | null | 2026-04-01 | |
| Sell | null | 2026-04-01 | |
| Sell | null | 2026-04-01 | |
| Sell | null | 2026-04-01 | |
| Sell | null | 2025-11-17 |
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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.