Perma-Fix Environmental Services, Inc. filings document material events, operating updates and governance matters for a nuclear services and mixed waste management company. Recent 8-K disclosures cover investor presentation materials, material agreements, shareholder voting results, operating and financial results, and capital-structure information tied to the company's common stock.
The filing record includes disclosures about Perma-Fix Northwest, including labor arrangements at the Richland waste treatment facility, as well as annual meeting votes on director elections, auditor ratification and executive compensation. These documents also address governance and reporting categories connected to radioactive and mixed waste treatment, nuclear services, remediation, demolition and disposal work.
Perma Fix Environmental Services Inc. (PESI) director Zach Paul Wamp acquired 775 shares of common stock through a grant or award on October 1, 2026, at a reported price of 11.7375 per share. The shares were held directly; his reported direct holdings after the acquisition were 54,248 shares. No Rule 10b5-1 plan is reported.
Perma Fix Environmental Services Inc. (PESI) director Joe Reeder received a grant of 1,289 common shares on October 1, 2026. The reported price was $11.7375 per share. His directly held position after the award was 240,634 shares. The transaction is identified as a grant or award acquisition rather than a purchase.
Perma Fix Environmental Services Inc. director Larry Shelton received a grant/award of 1,246 common shares on October 1, 2026, at a reported price of $11.7375 per share. After the award, he directly held 200,229 shares.
Perma Fix Environmental Services Inc. (PESI) director Joseph Timothy Grumski acquired 1,438 shares of common stock through a grant or award on October 1, 2026. The reported per-share price was $11.7375, and his reported direct holdings after the transaction were 69,099 shares. The transaction is reported as a grant or award acquisition.
Perma Fix Environmental Services (PESI) director Thomas Bostick received a compensation-related award of 1,108 common shares on October 1, 2026. The transaction is recorded as a grant or award acquisition, with a reported price of $11.7375 per share. His directly held position after the award was 51,718 shares.
Perma Fix Environmental Services Inc. director Kerry C. Duggan received an award of 748 shares of Common Stock on October 1, 2026. The reported per-share value was $11.7375. After the award, Duggan reported direct holdings of 8,388 shares. The transaction is reported as an award acquisition, not a market purchase.
Mark A. Zwecker, a director of Perma Fix Environmental Services Inc. (PESI), acquired 1,038 shares of common stock in a grant or award on October 1, 2026. The reported per-share price was $11.7375. After the transaction, he directly held 248,644 shares of common stock. The transaction is reported as a grant or award acquisition, not a purchase or sale.
PERMA FIX ENVIRONMENTAL SERVICES INC (PESI) revised its September 2026 investor presentation to change how it presents the Direct-Feed Low-Activity Waste (DFLAW) program; the revised presentation supersedes the original.
PESI continues to reference the U.S. Department of Energy’s estimate of 8,000 cubic meters of annual effluent, which the company estimates would equate to approximately $70 million in annual DFLAW-related revenue at full operation. The Department of Energy has not revised its estimate, and timing depends on how quickly DFLAW ramps toward design capacity. A separate estimate shows approximately 4,000 cubic meters of combined DFLAW waste and $35 million in annual revenue, assuming 50% production capacity in 2027; the EMF line is included, not additive, and production levels could vary. The revised presentation also shows an initial 200 East amount of $28.8 million and an illustrative 2028 run rate of $97.4 million.
Perma-Fix Environmental Services, Inc. (PESI) reported that on September 22, 2026 it made available an updated investor presentation titled “Investor Presentation, September 2026.” The presentation is furnished as Exhibit 99.1 to this report and is also posted on the company’s website.
PERMA FIX ENVIRONMENTAL SERVICES INC (PESI) received Amendment No. 2 to a Schedule 13G from MAK Capital Fund LP, MAK Capital One LLC, and Michael A. Kaufman reporting their beneficial ownership of the company’s common stock. The reporting persons collectively beneficially own 1,016,047 shares, representing 4.8% of the common stock outstanding.
All 1,016,047 shares are held with shared voting and shared dispositive power, with no sole voting or dispositive power reported. The percentage is calculated using 21,218,351 shares outstanding as of August 7, 2026. The filing indicates the group now reports ownership of 5 percent or less of the class.