Perma-Fix Environmental Services (PESI)
Treats radioactive and mixed waste while delivering nuclear field services.
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Treats radioactive and mixed waste and delivers nationwide nuclear field services through Treatment and Services segments. Licensed treatment facilities support project and waste management, restoration, decontamination and decommissioning, construction, and radiological safety work for government, commercial-nuclear, hospital, and research customers.
Treats radioactive and mixed waste through four nuclear-waste treatment facilities. Treatment and Services are the reportable segments.
Its Services segment delivers project and waste management, environmental restoration, decontamination and decommissioning, construction, and radiological protection, safety and industrial-hygiene work. Customers include government, commercial-nuclear, hospital, and research organizations. These services are delivered nationwide at government and commercial sites.
The business shifted from industrial operations to nuclear waste services and added field-services capability through the Safety & Ecology acquisition. Treatment relies on licensed, permitted capacity; a renewed Richland permit governs mixed-waste processing and macroencapsulation there.
Company facts
No analyst consensus on record.
EPSReportedEstimate
RevenueReportedEstimate
Balance sheet, Jun 30, 2026Cash & short-term investments $20.5M · Total debt $5.2M · Total assets $101.8M · Shareholders' equity $58.3M
- Revenue
- $12.9M
- Operating income
- −$6.5M
- Net income
- −$6.2M
No dividends on record.
| Institutions | 44.85% | 9.52M shares | |
|---|---|---|---|
| 94 holders · as of Jun 30, 2026 | |||
| Insiders | 10.62% | 2.25M shares | |
| 13 holders · as of Jul 14, 2026 | |||
| Other | 44.53% | 9.45M shares | |
| remainder | |||
21.22M company shares as of Sep 22, 2026 · institutions as of Jun 30, 2026 · holders as of their latest filing
Top shareholders13F · 13D/G · Form 4
| Holder | Stake | Shares | Date |
|---|---|---|---|
BlackRock, Inc.Institution | 5.90% | 1.25M | as of Jun 30, 2026 |
MAK Capital Fund LPInstitution | 5.47% | 1.16M | filed Aug 6, 2026 |
Mak Capital One LLCInstitution | 4.87% | 1.03M | as of Jun 30, 2026 |
HOLD Alapkezelo Zrt.Insider | 4.45% | 944,312 | filed Mar 30, 2026 |
Vanguard Capital Management LLCInstitution | 3.83% | 811,743 | as of Jun 30, 2026 |
Insider tradesForm 4
No open-market trades in the last 12 months.
- BWX Technologies
DOE nuclear-waste cleanup and complex-site closure services
- Amentum
DOE tank-waste cleanup and nuclear decommissioning services
- Fluor
DOE radioactive-waste cleanup and nuclear-site decommissioning
- AECOM
Nuclear decommissioning, radioactive-waste facilities and remediation
- Clean Harbors
Hazardous-waste treatment and on-site decontamination services
CompareAfter hours
| Company | Price | Change | |||||
|---|---|---|---|---|---|---|---|
| Perma-Fix Environmental Services | $16.30 | −1.78% | $367.7M | — | — | 6.4 | −11.7% |
| BWX Technologies | $144.90 | +0.31% | $13.51B | 38.0 | 28.9 | 3.8 | +18.0% |
| Amentum | $19.70 | −0.10% | $4.86B | 24.0 | 7.8 | 0.3 | −2.0% |
| Fluor | $54.03 | +0.02% | $7.65B | — | 16.7 | 0.5 | +8.8% |
| AECOM | $62.35 | +0.15% | $8.09B | 28.9 | 10.1 | 0.5 | −61.5% |
| Clean Harbors | $312.85 | −0.08% | $16.44B | 37.8 | 31.3 | 2.6 | +12.0% |
| Median | 33.3 | 16.7 | 0.5 | +8.8% |