PESI
PERMA FIX ENVIRONMENTAL SERVICES INC
Hazardous Waste ManagementNasdaqNon-accelerated filer<br>Smaller reporting company
Total Trades
27
Buys
23
Sells
4
Largest Trade
N/A
Insiders
9
Institutional Funds
63
Inst. Value
$1M+
Activist Filings
7
Insider Trades
| Insider | Title | Type | Value | Shares | Price | Date |
|---|---|---|---|---|---|---|
| Duggan Kerry C | Director | SELL | $15K–$50K | 6K | $8.60 | Sep 16, 2025 |
| Duff Mark | President and CEO | BUY | $1K–$15K | 897 | $8.05 | Sep 12, 2025 |
| Shelton Larry | Director | BUY | $1K–$15K | 1K | $8.58 | Sep 12, 2025 |
| Shelton Larry | Director | BUY | $1K–$15K | 1K | $9.61 | Sep 10, 2025 |
| Duggan Kerry C | Director | SELL | N/A | 17K | — | Jun 2, 2025 |
| Naccarato Ben | CFO | BUY | $1K–$15K | 400 | $7.00 | Mar 24, 2025 |
| Duff Mark | President and CEO | BUY | $1K–$15K | 2K | $7.03 | Mar 24, 2025 |
| Eshleman Troy | COO | BUY | $1K–$15K | 1K | $7.35 | Mar 19, 2025 |
| Duff Mark | President and CEO | BUY | $1K–$15K | 1K | $7.15 | Mar 19, 2025 |
| CENTOFANTI LOUIS F | EVP of Strategic I… | BUY | $1K–$15K | 1K | $7.31 | Mar 18, 2025 |
| Duff Mark | President and CEO | BUY | $15K–$50K | 3K | $7.16 | Dec 4, 2023 |
| Shelton Larry | Director | BUY | $1K–$15K | 2K | $7.20 | Dec 4, 2023 |
| REEDER JOE | Director | SELL | $50K–$100K | 6K | $11.57 | May 30, 2023 |
| REEDER JOE | Director | SELL | $100K–$500K | 19K | $11.53 | May 19, 2023 |
| CENTOFANTI LOUIS F | EVP of Strategic I… | BUY | $1K–$15K | 2K | $3.78 | Dec 22, 2022 |
| Naccarato Ben | CFO | BUY | $1K–$15K | 575 | $3.47 | Dec 14, 2022 |
| CENTOFANTI LOUIS F | EVP of Strategic I… | BUY | $1K–$15K | 2K | $3.38 | Dec 8, 2022 |
| Duff Mark | President and CEO | BUY | $1K–$15K | 1K | $3.89 | Nov 23, 2022 |
| CENTOFANTI LOUIS F | EVP of Strategic I… | BUY | $1K–$15K | 1K | $4.63 | Sep 27, 2022 |
| CENTOFANTI LOUIS F | EVP of Strategic I… | BUY | $1K–$15K | 2K | $4.88 | Sep 12, 2022 |
| Grondin Richard | EVP of Waste Treat… | BUY | $1K–$15K | 1K | $4.87 | Sep 9, 2022 |
| Lombardo Andy | EVP of Nuclear & T… | BUY | $1K–$15K | 1K | $4.73 | Sep 8, 2022 |
| Duff Mark | President and CEO | BUY | $1K–$15K | 2K | $4.75 | Sep 7, 2022 |
| CENTOFANTI LOUIS F | EVP of Strategic I… | BUY | $1K–$15K | 2K | $4.74 | Sep 7, 2022 |
| Shelton Larry | Director | BUY | <$1K | 37 | $5.05 | Jun 21, 2022 |
| Shelton Larry | Director | BUY | $1K–$15K | 1K | $5.33 | Jun 15, 2022 |
| Duff Mark | President and CEO | BUY | $1K–$15K | 2K | $5.55 | May 13, 2022 |
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Institutional Ownership
13F filings as of Dec 31, 2025 · 63 funds holding
| Fund | Shares | Value | Type |
|---|---|---|---|
| MAK CAPITAL ONE LLC | 919K | $1M+ | SH |
| VANGUARD GROUP INC | 852K | $1M+ | SH |
| PRESCOTT GROUP CAPITAL MANAGEMENT, L.L.C. | 777K | $1M+ | SH |
| HEARTLAND ADVISORS INC | 400K | $1M+ | SH |
| DIAMOND HILL CAPITAL MANAGEMENT INC | 387K | $1M+ | SH |
| GEODE CAPITAL MANAGEMENT, LLC | 367K | $1M+ | SH |
| Potomac Capital Management, Inc. | 342K | $1M+ | SH |
| STATE STREET CORP | 312K | $1M+ | SH |
| DIMENSIONAL FUND ADVISORS LP | 149K | $1M+ | SH |
| MYDA Advisors LLC | 100K | $1M+ | SH |
| Informed Momentum Co LLC | 65K | $500K+ | SH |
| GatePass Capital, LLC | 65K | $500K+ | SH |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 49K | $500K+ | SH |
| Pale Fire Capital SE | 43K | $500K+ | SH |
| JANE STREET GROUP, LLC | 41K | $500K+ | SH |
| SEI INVESTMENTS CO | 39K | $100K–$500K | SH |
| Squarepoint Ops LLC | 37K | $100K–$500K | SH |
| ARS Investment Partners, LLC | 36K | $100K–$500K | SH |
| BARCLAYS PLC | 27K | $100K–$500K | SH |
| UBS Group AG | 26K | $100K–$500K | SH |
Activist & 5%+ Owners
SC 13D/13G filings — investors holding 5%+ of outstanding shares
SC 13G · Oct 30, 2025
5.1%
936K shares
SC 13G · Nov 8, 2024
6.4%
1.0M shares
SC 13G · Oct 22, 2024
6.4%
1.0M shares
SC 13D/A · Apr 12, 2023
4.9%
649K shares
SC 13D/A · Mar 24, 2023
5.5%
729K shares
SC 13D/A · Feb 17, 2023
7.1%
945K shares
SC 13D/A · Jan 10, 2023
8.3%
1.1M shares