Perma-Fix Environmental Svcs Inc (PESI)
Who owns Perma-Fix Environmental Svcs Inc (PESI)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 81.9% of the shares are freely tradable; institutional investors hold 49.3%.
Ownership Structure
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| BlackRock Inc | 5.52 | 1,170,303 | -2.3 | 03/31/2026 |
| Mak Capital One LLC | 4.33 | 918,673 | +0.0 | 03/31/2026 |
| Prescott Group Capital Management LLC | 3.67 | 777,142 | +0.0 | 03/31/2026 |
| Vanguard Capital Management, LLC | 3.58 | 759,435 | +0.0 | 03/31/2026 |
| Geode Capital Management, LLC | 2.04 | 432,701 | +2.3 | 03/31/2026 |
| Heartland Advisors Inc | 1.89 | 400,000 | +0.0 | 03/31/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Vanguard Morn Total Stk Mkt Idx Investor | 2.82 | 597,751 | +0.0 | 06/30/2026 |
| iShares Russell 2000 ETF | 2.18 | 461,682 | +1.1 | 07/28/2026 |
| Heartland Value Investor | 1.89 | 400,000 | +0.0 | 06/30/2026 |
| Heartland Value Strategy | 1.89 | 400,000 | +0.0 | 06/30/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 13. Jul 2026 | Shelton Larry | Director | Other | 2,400 | 4.60 | 11,040 |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character.
View all insider transactions →Data as of: August 3, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.