PESIPerma-Fix Environmental Services, Inc.

1. Sep 23, 2026The Revised Presentation revises the Company’s presentation of the Direct-Feed Low-Activity Waste (“DFLAW”) program on slides 9 and 16. Following investor inquiries, the Company concluded that the Original Presentation did not adequately portray the values it was intended to present.Other event · Form 8-K/A
2. Sep 22, 2026The investor presentation is also posted to the Company’s website.Other event · Form 8-K
3. Jul 28, 2026On July 22, 2026, the Company held its 2026 annual meeting of stockholders (the “2026 Annual Meeting”). As of May 28, 2026, the record date for the 2026 Annual Meeting, 21,203,552 shares of the Company’s common stock, par value $.001 per share (Common Stock), were outstanding, each entitled to one vote per share.Earnings release · Form 8-K
4. May 18, 2026Underwriting Agreement On May 14, 2026, Perma-Fix Environmental Services, Inc. (the “Company”) entered into an underwriting agreement (the “Underwriting Agreement”) with Craig-Hallum Capital Group LLC (the “Underwriter”)Material agreement entered · Form 8-K
5. May 11, 2026On April 16, 2026, the Company’s Board of Directors determined that the Company’s 2026 Annual Meeting of Stockholders will be held on July 22, 2026, and that the record date for stockholders entitled to vote at such meeting will be May 28, 2026.Earnings release · Form 8-K
6. Apr 8, 2026On April 9, 2026, Perma-Fix Environmental Services, Inc.’s (the “Company”) Chief Executive Officer (“CEO”) and Chief Financial Officer (“CFO”) will be presenting at Gabelli Funds’ 12 th Annual Waste & Environmental Services Symposium (the “Symposium”)Other event · Form 8-K
7. Jan 28, 2026Management Incentive Plans (“MIPs”) On January 22, 2026, upon the recommendation of the Compensation and Stock Option Committee (the “Compensation Committee”) of Perma-Fix Environmental Services, Inc. (the “Company”), the Company’s Board of Directors (the “Board”) approved, with Mark Duff and Dr. Louis Centofanti …Director or officer change · Form 8-K
8. Nov 19, 2025On November 13, 2025, Perma-Fix Environmental Services, Inc.’s (the “Company”) Board of Directors (the “Board”) voted to rescind a Second Amendment to the Company’s 2017 Stock Option Plan that had been submitted to, and approved by, the Company’s stockholders at the Company’s 2023 Annual Meeting of Stockholders held …Material agreement terminated · Form 8-K
9. Sep 30, 2025Collective Bargaining Agreement On September 25, 2025, Perma-Fix Environmental Services, Inc.’s (the “Company”) wholly owned subsidiary, Perma-Fix Northwest Richland, Inc. (“PFNW”), entered into a Collective Bargaining Agreement (the “CBA”), with the United Association of Plumbers and Steamfitters Local Union 598 (the …Material agreement entered · Form 8-K

Quoted from SEC EDGAR filings. A current report is filed within four business days of the event it describes.