of Form 8-K and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing. Preliminary Q2 Results The second quarter of 2026 marked an important operational miles…

Entry into a Material Definitive Agreement. Underwriting 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”). Pursuant to the terms of the Underwriting Agreement, the Company agreed to sell, and the Underwriter agreed to purchase, in a firm commitment underwritten public offering (the “Offering”), subject to and on the conditions set forth…

The information furnished pursuant to this Item 2.02, including Exhibit 99.1, shall not be deemed “filed” for purposes of Section 18 of the Securities Act of 1934, as amended, or otherwise subject to the liabilities of such section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, except as shall be expressly set forth by specific reference in such filing.

The filing describes the approval of Management Incentive Plans (MIPs) for executive officers, which is a routine compensation matter.

Material Modification to Rights of Security Holders. The information disclosed in 5.03 is herein incorporated by reference.

Termination of a Material Definitive Agreement. On 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 on July 20, 2023, in order to render moot a challenge to the Second Amendment brought by a stockholder of the Company on November 2…

Entry into a Material Definitive Agreement. Collective 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 “Union”), to become effective October 1, 2025. The CBA covers seventy-one (71) production employees (“Covered Employees”) at the Comp…

The company is not extending current employment agreements but intends to offer new ones.

Termination of a Material Definitive Agreement. Employment Agreements Each of the Company’s executive officers: Mark Duff, President and Chief Executive Officer; Ben Naccarato, Executive Vice President (“EVP”) and Chief Financial Officer; Dr. Louis Centofanti, EVP of Strategic Initiatives; Richard Grondin, EVP of Hanford and International Waste Operations, has an employment agreement dated April 20, 2023, the material terms of which have been previously reported on

Troy Eshleman: The filing details the terms of a new employment agreement for Troy Eshleman, COO.

Entry into a Definitive Agreement The information contained in Items 5.02 is incorporated herein by reference.

Chief Operating Officer (COO) — Troy Eshleman: Mr. Troy Eshleman was promoted from Vice President of Operations to Chief Operating Officer.

Entry into a Material Definitive Agreement. Underwriting Agreement On December 18, 2024, Perma-Fix Environmental Services, Inc. (the “Company”) entered into an underwriting agreement (the “Underwriting Agreement”) with Craig-Hallum Capital Group, LLC (the “Underwriter”). Pursuant to the terms of the Underwriting Agreement, the Company agreed to sell, and the Underwriter agreed to purchase, subject to and on the conditions set forth therein, 2,200,000 shares of the Company’s common stock, $0.0…

Entry into a Material Definitive Agreement. On May 21, 2024, Perma-Fix Environmental Services, Inc. (the “Company”) entered into a Securities Purchase Agreement (the “Securities Purchase Agreement”) with certain institutional and retail investors (the “Purchasers”), pursuant to which the Company agreed to sell and issue, in a registered direct offering, an aggregate of 2,051,282 shares (the “Shares”) of the Company’s common stock, par value $0.001 per share (the “Common Stock”), at a negotiat…

Unregistered Sales of Equity Securities. The disclosures in

Results of Operations and Financial Condition As previously disclosed, Perma-Fix Environmental Services, Inc.’s (the “Company”) results of operations in the first quarter of 2024 were impacted by accelerated investments and several events, which the Company believes were temporary. The Company has elected to provide additional disclosure to further clarify the nature of these investments and impacts, which included the following: ●Accelerated investments in research and development on our new…

The filing describes the approval of Management Incentive Plans (MIPs) for key executives, which is a routine compensation matter.

Entry into a Material Definitive Agreement. On November 28, 2023, Perma-Fix Environmental Services, Inc. (the “Company”) disclosed that it was advised by the European Commission (the “Contracting Authority”) that the joint venture consisting of the Company and Campoverde Srl would be awarded a multi-year contract valued at approximately EUR 50 million for the treatment of radioactive waste from the Joint Research Center in Ispra, Italy. On December 18, 2023, this contract was executed by the…

Other Events. On November 28, 2023, Perma-Fix Environmental Services, Inc. (the “Company”) received notification from the European Commission of its intent to award a joint venture of which the Company and Campoverde Srl are 50/50 joint venture partners, a multi-year contract, valued at up to EUR 50 million, for the treatment of radioactive waste from the Joint Research Center (“JRC”) in Ispra, Italy. Finalization of this award is subject to execution of a contract by the parties and, until e…

EVP of Nuclear and Technical Services — Mr. Andy Lombardo: Mr. Andy Lombardo is retiring from his position as EVP of Nuclear and Technical Services but will remain in a reduced capacity.

Other Events On June 1, 2023, at 4:00 p.m., the Securities and Exchange Commission (the “SEC”) declared effective the shelf registration statement on Form S-3 of Perma-Fix Environmental Services, Inc. (the “Company”), filed with the SEC on May 19, 2023. Under the shelf registration, the Company may offer and sell from time to time up to 2,500,000 shares of its common stock. The terms of the common stock offered under the registration statement, and the intended use of the net proceeds resulti…

Other Events On May 19, 2023, Perma-Fix Environmental Services, Inc. (the “Company”) filed a shelf registration statement on Form S-3 with the Securities and Exchange Commission (“SEC”). The Company has no current plans to sell securities under the new registration statement, and it only filed the shelf registration as part of its ongoing commitment to evaluate all options to enhance shareholder value, if it should desire and be in a position to opportunistically access the capital markets at…

Material Modification to Rights of Security Holders The information disclosed in

The company entered into new employment agreements with several executive officers, replacing their previous agreements.

Entry into a Definitive Agreement The information contained in Items 5.02 (Employment Agreements) is incorporated herein by reference.