PESI / Perma-Fix Environmental Services, Inc. - تصريحات هيئة الأوراق المالية والبورصات، التقرير السنوي، بيان الوكيل

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 Form 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 Form 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2025 Or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 001-11596 PERMA-FIX ENVIRONMENTAL S

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported) July 24, 2025 PERMA-FIX ENVIRONMENTAL SERVICES, INC. (Exact name of registrant as specified in its charter) PERMA FIX ENVIRONMENTAL SERVICES INC Delaware 1-11596 58-1954497 (State or other jurisdict

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☒ Definitive Proxy State

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☐ Definitive Proxy State

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 Form 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 Form 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2025 Or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 1-11596 PERMA-FIX ENVIRONMENTAL SE

Entry into a Material Definitive Agreement, Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Other Events, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported) April 17, 2025 PERMA-FIX ENVIRONMENTAL SERVICES, INC. PERMA FIX ENVIRONMENTAL SERVICES INC (Exact name of registrant as specified in its charter) Delaware 1-11596 58-1954497 (State or

EMPLOYMENT AGREEMENT

Exhibit 99.1 EMPLOYMENT AGREEMENT THIS EMPLOYMENT AGREEMENT (“Agreement”) is made and entered into as of the 17th day of April, 2025, by and between PERMA-FIX ENVIRONMENTAL SERVICES, INC., a Delaware corporation (the “Company”), and Troy Eshleman (the “Executive”). W IT N E S S E T H: WHEREAS, the Company believes that the services, knowledge, and contributions of the Executive to the Company are

Tenth Amendment to Second Amended and Restated Revolving Credit, Term Loan and Security Agreement dated March 11, 2025, between Perma-Fix Environmental Services, Inc. and PNC Bank, National Association.

EXHIBIT 4.7 EXECUTION VERSION TENTH AMENDMENT TO SECOND AMENDED AND RESTATED REVOLVING CREDIT, TERM LOAN AND SECURITY AGREEMENT THIS TENTH AMENDMENT TO SECOND AMENDED AND RESTATED REVOLVING CREDIT, TERM LOAN AND SECURITY AGREEMENT, dated as of March 11, 2025 (this “Amendment”), relating to the Credit Agreement referenced below, is by and among PERMA-FIX ENVIRONMENTAL SERVICES, INC., a Delaware cor

Insider Trading Policy and Procedures (Stock Trading, Report & Blackout Policy).

EXHIBIT 19 PERMA-FIX ENVIRONMENTAL SERVICES, INC. STOCK TRADING, REPORTING & BLACKOUT POLICY Introduction The purpose of this Stock Trading, Reporting & Blackout Policy (the “Stock Trading Policy” or the “Policy”), is to explain certain legal concepts with respect to trading in the securities of Perma-Fix Environmental Services, Inc. (the “Company” or “Perma-Fix”) by individuals who are either emp

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15 (d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2024 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15 (d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 1-11596 PERMA-FIX ENVIRONMENTAL SERVI

List of Subsidiaries

EXHIBIT 21.1 LIST OF SUBSIDIARIES OF PERMA-FIX ENVIRONMENTAL SERVICES, INC. (THE “COMPANY”) Treatment Perma-Fix of Florida, Inc. (“PFF”), a Florida Corporation, is a 100% owned subsidiary of the Company. Diversified Scientific Services, Inc., (“DSSI”) a Tennessee Corporation, is a 100% owned subsidiary of the Company. East Tennessee Materials and Energy Corporation, (“M&EC”) a Tennessee Corporatio

Form of Representative’s Warrant in connection with Underwriter’s Agreement, dated as of December 18, 2024.

EXHIBIT 10.31 Form of Representative’s Warrant THE REGISTERED HOLDER OF THIS PURCHASE WARRANT BY ITS ACCEPTANCE HEREOF, AGREES THAT IT WILL NOT SELL, TRANSFER OR ASSIGN THIS PURCHASE WARRANT EXCEPT PURSUANT TO AN EFFECTIVE REGISTRATION STATEMENT COVERING THIS PURCHASE WARRANT OR PURSUANT TO AN EXEMPTION FROM REGISTRATION UNDER THE SECURITIES ACT. THIS PURCHASE WARRANT IS VOID AFTER 5:00 P.M., EAST

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported) January 23, 2025 PERMA-FIX ENVIRONMENTAL SERVICES, INC. (Exact name of registrant as specified in its charter) Delaware 1-11596 58-1954497 (State or other jurisdiction of incorporation

PERMA-FIXENVIRONMENTAL SERVICES, INC 2017 STOCK OPTION PLAN INCENTIVE STOCK OPTION AGREEMENT

Exhibit 99.6 ISO No. PERMA-FIXENVIRONMENTAL SERVICES, INC 2017 STOCK OPTION PLAN INCENTIVE STOCK OPTION AGREEMENT Participant Name: Troy Eshleman Grant Date: January 23, 2025 Shares Subject to Options: 50,000 Vesting Schedule Expiration Date: January 23, 2031 Exercise Price: $10.70 Exercise Dates Percent Exercisable 01/23/2026 20% 01/23/2027 20% 01/23/2028 20% 01/23/2029 20% 01/23/2030 20% PERMA-F

*CERTAIN INFORMATION IN THIS DOCUMENT HAS BEEN EXCLUDED FROM THIS PUBLIC FILING BECAUSE IT IS NOT MATERAL AND WOULD LIKELY CAUSE COMPETITIVE HARM TO THE COMPANY IF PUBLICLY DISCLOSED CHIEF OPERATING OFFICER Effective: January 1, 2025

Exhibit 99.5 *CERTAIN INFORMATION IN THIS DOCUMENT HAS BEEN EXCLUDED FROM THIS PUBLIC FILING BECAUSE IT IS NOT MATERAL AND WOULD LIKELY CAUSE COMPETITIVE HARM TO THE COMPANY IF PUBLICLY DISCLOSED CHIEF OPERATING OFFICER Effective: January 1, 2025 COO 2025 MIP CHIEF OPERATING OFFICER PURPOSE: To define the compensation plan for the Chief Operation Officer (“COO”) SCOPE: Perma-Fix Environmental Serv

Richard, please find attached your updated job description outlining the duties and responsibilities of the EVP of Hanford and International Waste Operations.

Exhibit 99.7 Memo To: Richard Grondin From: Mark Duff, CEO Date: 1/28/2025 Re: Memo of Change in Title & Job Description Richard, please find attached your updated job description outlining the duties and responsibilities of the EVP of Hanford and International Waste Operations. We are very excited about this position, and we know you have the leadership, management and vision necessary to ensure

*CERTAIN INFORMATION IN THIS DOCUMENT HAS BEEN EXCLUDED FROM THIS PUBLIC FILING BECAUSE IT IS NOT MATERAL AND WOULD LIKELY CAUSE COMPETITIVE HARM TO THE COMPANY IF PUBLICLY DISCLOSED CHIEF EXECUTIVE OFFICER AND PRESIDENT Effective: January 1, 2025

Exhibit 99.1 *CERTAIN INFORMATION IN THIS DOCUMENT HAS BEEN EXCLUDED FROM THIS PUBLIC FILING BECAUSE IT IS NOT MATERAL AND WOULD LIKELY CAUSE COMPETITIVE HARM TO THE COMPANY IF PUBLICLY DISCLOSED CHIEF EXECUTIVE OFFICER AND PRESIDENT Effective: January 1, 2025 CEO 2025 MIP CHIEF EXECUTIVE OFFICER AND PRESIDENT PURPOSE: To define the compensation plan for the Chief Executive Officer (“CEO”) and Pre

*CERTAIN INFORMATION IN THIS DOCUMENT HAS BEEN EXCLUDED FROM THIS PUBLIC FILING BECAUSE IT IS NOT MATERAL AND WOULD LIKELY CAUSE COMPETITIVE HARM TO THE COMPANY IF PUBLICLY DISCLOSED EXECUTIVE VICE PRESIDENT AND CHIEF FINANCIAL OFFICER Effective: Jan

Exhibit 99.2 *CERTAIN INFORMATION IN THIS DOCUMENT HAS BEEN EXCLUDED FROM THIS PUBLIC FILING BECAUSE IT IS NOT MATERAL AND WOULD LIKELY CAUSE COMPETITIVE HARM TO THE COMPANY IF PUBLICLY DISCLOSED EXECUTIVE VICE PRESIDENT AND CHIEF FINANCIAL OFFICER Effective: January 1, 2025 CFO 2025 MIP EXECUTIVE VICE PRESIDENT AND CHIEF FINANCIAL OFFICER PURPOSE: To define the compensation plan for the Chief Fin

*CERTAIN INFORMATION IN THIS DOCUMENT HAS BEEN EXCLUDED FROM THIS PUBLIC FILING BECAUSE IT IS NOT MATERAL AND WOULD LIKELY CAUSE COMPETITIVE HARM TO THE COMPANY IF PUBLICLY DISCLOSED EXECUTIVE VICE PRESIDENT HANFORD AND INTERNATIONAL WASTE OPERATIONS

Exhibit 99.4 *CERTAIN INFORMATION IN THIS DOCUMENT HAS BEEN EXCLUDED FROM THIS PUBLIC FILING BECAUSE IT IS NOT MATERAL AND WOULD LIKELY CAUSE COMPETITIVE HARM TO THE COMPANY IF PUBLICLY DISCLOSED EXECUTIVE VICE PRESIDENT HANFORD AND INTERNATIONAL WASTE OPERATIONS Effective: January 1, 2025 EVP- HANFORD AND INTERNATIONAL WASTE OPERATIONS 2025 MIP EXECUTIVE VICE PRESIDENT-HANFORD AND INTERNATIONAL W

*CERTAIN INFORMATION IN THIS DOCUMENT HAS BEEN EXCLUDED FROM THIS PUBLIC FILING BECAUSE IT IS NOT MATERAL AND WOULD LIKELY CAUSE COMPETITIVE HARM TO THE COMPANY IF PUBLICLY DISCLOSED EXECUTIVE VICE PRESIDENT OF STRATEGIC INITIATIVES Effective: Januar

Exhibit 99.3 *CERTAIN INFORMATION IN THIS DOCUMENT HAS BEEN EXCLUDED FROM THIS PUBLIC FILING BECAUSE IT IS NOT MATERAL AND WOULD LIKELY CAUSE COMPETITIVE HARM TO THE COMPANY IF PUBLICLY DISCLOSED EXECUTIVE VICE PRESIDENT OF STRATEGIC INITIATIVES Effective: January 1, 2025 EVP OF STRATEGIC INITIATVES 2025 MIP EVP OF STRATEGIC INITIATIVES PURPOSE: To define the compensation plan for the Executive Vi

Underwriting Agreement, dated as of November 18, 2024, by and between the Company and Craig-Hallum Capital Group, LLC

Exhibit 1.1 Execution Version 2,200,000 SHARES of Common Stock OF PERMA-FIX ENVIRONMENTAL, INC. UNDERWRITING AGREEMENT December 18, 2024 Craig-Hallum Capital Group LLC As the Representative of the Several underwriters, if any, named in Schedule I hereto 222 South Ninth Street, Suite 350 Minneapolis, Minnesota 55402 Ladies and Gentlemen: The undersigned, Perma-fix Environmental Services, Inc., a co

Perma-Fix Announces Pricing of $22 Million Public Offering of Common Stock

Exhibit 99.2 Perma-Fix Announces Pricing of $22 Million Public Offering of Common Stock Atlanta, GA – December 18, 2024 – Perma-Fix Environmental Services, Inc. (Nasdaq: PESI) (“Perma-Fix” or the “Company”), today announced the pricing of its previously announced underwritten public offering of 2,200,000 shares of its common stock at a price to the public of $10.00 per share. Perma-Fix expects the

Perma-Fix Announces Proposed Public Offering of Common Stock

Exhibit 99.1 Perma-Fix Announces Proposed Public Offering of Common Stock Atlanta, GA – December 17, 2024 – Perma-Fix Environmental Services, Inc. (Nasdaq: PESI) (“Perma-Fix” or the “Company”), an environmental and environmental technology know-how company, today announced that it has commenced an underwritten public offering of shares of its common stock. The proposed offering is subject to marke

Entry into a Material Definitive Agreement, Other Events, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported) December 18, 2024 PERMA-FIX ENVIRONMENTAL SERVICES, INC. (Exact name of registrant as specified in its charter) Delaware 1-11596 58-1954497 (State or other jurisdiction of incorporatio

PERMA-FIX ENVIRONMENTAL SERVICES, INC. 2,200,000 Shares of Common Stock

Filed pursuant to Rule 424(b)(5) Registration No. 333-283555 PROSPECTUS SUPPLEMENT (To Prospectus dated December 12, 2024) PERMA-FIX ENVIRONMENTAL SERVICES, INC. 2,200,000 Shares of Common Stock We are offering 2,200,000 shares of our common stock by this prospectus supplement and the accompanying prospectus, at a public offering price of $10.00 per share. Our common stock is traded on The Nasdaq

Subject to completion, dated December 17, 2024

424B5 1 form424b5.htm Filed pursuant to Rule 424(b)(5) Registration No. 333-283555 The information in this preliminary prospectus supplement is not complete and may be changed. A registration statement has been filed with the Securities and Exchange Commission and is effective. This preliminary prospectus supplement and the accompanying prospectus are not an offer to sell these securities and it i

December 10, 2024

December 10, 2024 VIA EDGAR U.S. Securities and Exchange Commission Division of Corporation Finance Office of Energy & Transportation 100 F Street, N.E. Washington, D.C. 20549 RE: Perma-Fix Environmental Services, Inc. Registration Statement on Form S-3 File No. 333-283555 Request for Acceleration Ladies and Gentlemen: Pursuant to Rule 461 under the Securities Act of 1933, as amended, Perma-Fix En

Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported) December 2, 2024 PERMA-FIX ENVIRONMENTAL SERVICES, INC. (Exact name of registrant as specified in its charter) Delaware 1-11596 58-1954497 (State or other jurisdiction of incorporation

As filed with the Securities and Exchange Commission on December 2, 2024

As filed with the Securities and Exchange Commission on December 2, 2024 Registration No.

Form of Indenture

Exhibit 4.1 PERMA-FIX ENVIRONMENTAL SERVICES, INC. INDENTURE Dated as of [●], 202[●] [] Trustee CROSS-REFERENCE TABLE* *This Cross Reference Table is not part of this Indenture. Trust Indenture Act Section Indenture Section 310 (a)(1) 7.10 (a)(2) 7.10 (a)(3) N.A. (a)(4) N.A. (a)(5) 7.10 (b) 7.10 (c) N.A. 311 (a) 7.11 (b) 7.11 (c) N.A. 312 (a) 2.06 (b) 11.03 (c) 11.03 313 (a) 7.06 (b)(2) 7.06; 7.07

Calculation of Filing Fee Table

Exhibit 107 Calculation of Filing Fee Tables Form S-3 (Form Type) Perma-Fix Environmental Services, Inc.

Ninth Amendment to Second Amended and Restated Revolving Credit, Term Loan and Security Agreement, dated November 12, 2024, between Perma-Fix Environmental Services, Inc. and PNC Bank, National Association

Exhibit 4.3 EXECUTION VERSION NINTH AMENDMENT TO SECOND AMENDED AND RESTATED REVOLVING CREDIT, TERM LOAN AND SECURITY AGREEMENT THIS NINTH AMENDMENT TO SECOND AMENDED AND RESTATED REVOLVING CREDIT, TERM LOAN AND SECURITY AGREEMENT, dated as of November 12, 2024 (this “Amendment”), relating to the Credit Agreement referenced below, is by and among PERMA-FIX ENVIRONMENTAL SERVICES, INC., a Delaware

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 Form 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 Form 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2024 Or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 001-11596 PERMA-FIX ENVIRONMEN

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 Form 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 Form 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2024 Or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 001-11596 PERMA-FIX ENVIRONMENTAL S

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported) July 18, 2024 PERMA-FIX ENVIRONMENTAL SERVICES, INC. (Exact name of registrant as specified in its charter) Delaware 001-11596 58-1954497 (State or other jurisdiction of incorporation)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☐ Definitive Proxy State

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☒ Definitive Proxy State

Perma-Fix Announces Pricing of Approximately $20 Million Registered Direct Offering

Exhibit 99.1 Perma-Fix Announces Pricing of Approximately $20 Million Registered Direct Offering ATLANTA – May 22, 2024 – Perma-Fix Environmental Services, Inc. (Nasdaq: PESI) (“Perma-Fix” or the “Company”), an environmental and environmental technology know-how company, today announced that it has entered into a definitive agreement for the issuance and sale of 2,051,282 shares of its common stoc

Form of Securities Purchase Agreement, dated May 21, 2024, by and between the Company and the purchasers party thereto.

Exhibit 10.1 SECURITIES PURCHASE AGREEMENT This Securities Purchase Agreement (this “Agreement”) is dated as of May 21, 2024 and is between Perma-Fix Environmental Services, Inc., a Delaware corporation (the “Company”), and each purchaser identified on the signature pages hereto (each, including its successors and assigns, a “Purchaser” and collectively the “Purchasers”). WHEREAS, subject to the t

Form of Placement Agents’ Warrants, as incorporated by reference from Exhibit 10.3 to the Company’s Form 8-K filed on May 24, 2024.

Exhibit 10.3 Placement Agent’s Warrant NEITHER THIS PURCHASE WARRANT NOR THE SHARES OF COMMON STOCK ISSUABLE UPON EXERCISE HEREOF HAVE BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE “SECURITIES ACT”), OR ANY OTHER SECURITIES LAWS. THE REGISTERED HOLDER OF THIS PURCHASE WARRANT BY ITS ACCEPTANCE HEREOF, AGREES THAT IT WILL NOT SELL, TRANSFER OR ASSIGN THIS PURCHASE WARRANT EXCEPT

Placement Agency Agreement, dated as of May 21, 2024, by and between the Company and Craig-Hallum Capital Group LLC and Wellington Shields & Co., LLC.

Exhibit 10.2 May 21, 2024 Perma-Fix Environmental Services, Inc. 8302 Dunwoody Place, Suite 250 Atlanta, GA 30350 Attention: Mark Duff, President and Chief Executive Officer Re: Registered Direct Offering of Common Stock Dear Mr. Duff: This letter (the “Agreement”) constitutes the agreement between Craig-Hallum Capital Group LLC (“Craig-Hallum”) and Wellington Shields & Co. LLC (“Wellington” and t

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 21, 2024 PERMA-FIX ENVIRONMENTAL SERVICES, INC. (Exact name of registrant as specified in its charter) Delaware . 1-11596 . 58-1954497 (State or other jurisdiction of incorporation

PERMA-FIX ENVIRONMENTAL SERVICES, INC. 2,051,282 Shares of Common Stock

Filed pursuant to Rule 424(b)(5) Registration No. 333-272074 PROSPECTUS SUPPLEMENT (To Prospectus dated June 1, 2023) PERMA-FIX ENVIRONMENTAL SERVICES, INC. 2,051,282 Shares of Common Stock Pursuant to this prospectus supplement and the accompanying prospectus, and the securities purchase agreement dated May 21, 2024, we are offering in a registered direct offering to certain purchasers, 2,051,282

Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported) May 10, 2024 PERMA-FIX ENVIRONMENTAL SERVICES, INC. (Exact name of registrant as specified in its charter) Delaware 001-11596 58-1954497 (State or other jurisdiction of incorporation)

Eighth Amendment to Second Amended and Restated Revolving Credit, Term Loan and Security Agreement dated May 8, 2024, between Perma-Fix Environmental Services, Inc. and PNC Bank, National Association, as incorporated by reference from Exhibit 4.1 to the Company Form 10-Q for the first quarter 2024, filed on May 9, 2024.

Exhibit 4.1 EXECUTION VERSION EIGHTH AMENDMENT TO SECOND AMENDED AND RESTATED REVOLVING CREDIT, TERM LOAN AND SECURITY AGREEMENT THIS EIGHTH AMENDMENT TO SECOND AMENDED AND RESTATED REVOLVING CREDIT, TERM LOAN AND SECURITY AGREEMENT, dated as of May 8 , 2024 (this “Amendment”), relating to the Credit Agreement referenced below, is by and among PERMA-FIX ENVIRONMENTAL SERVICES, INC., a Delaware cor

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 Form 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 Form 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2024 Or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 1-11596 PERMA-FIX ENVIRONMENTAL SE

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported) April 10, 2024 PERMA-FIX ENVIRONMENTAL SERVICES, INC. (Exact name of registrant as specified in its charter) Delaware . 1-11596 58-1954497 (State or other jurisdiction of incorporation

Perma-Fix Clawback Policy

Exhibit 97 CLAWBACK POLICY The Board of Directors (the “Board”) of Perma-Fix Environmental Services, Inc.

Third Amendment to 2003 Outside Directors Stock Plan.

Exhibit 10.4 THIRD AMENDMENT to 2003 OUTSIDE DIRECTORS STOCK PLAN THIS THIRD AMENDMENT TO THE PERMA-FIX ENVIRONMENTAL SERVICES, INC. 2003 OUTSIDE DIRECTORS STOCK PLAN (the “Third Amendment”) was approved by the Board of Directors (the “Board”) of Perma-Fix Environmental Services, Inc. (the “Company”) to be effective on July 10, 2014, subject to the approval of the shareholders of the Company. WHER

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15 (d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2023 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15 (d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 1-11596 PERMA-FIX ENVIRONMENTAL SERVI

2017 Stock Option Plan,

Exhibit 10.7 PERMA-FIX ENVIRONMENTAL SERVICES, INC. 2017 STOCK OPTION PLAN The Board of Directors of Perma-Fix Environmental Services, Inc., a Delaware corporation (the “Company”), has adopted this 2017 Stock Option Plan (the “Plan”) on May 30, 2017, to be effective upon the approval of a majority of the stockholders of the Company present in person or by proxy at any regular or special meeting of

Fourth Amendment to 2003 Outside Directors Stock Plan.

Exhibit 10.5 FOURTH AMENDMENT to 2003 OUTSIDE DIRECTORS STOCK PLAN THIS FOURTH AMENDMENT TO THE PERMA-FIX ENVIRONMENTAL SERVICES, INC. 2003 OUTSIDE DIRECTORS STOCK PLAN (the “Third Amendment”) was approved by the Board of Directors (the “Board”) of Perma-Fix Environmental Services, Inc. (the “Company”) to be effective on May 30, 2017, subject to the approval of the shareholders of the Company. WHE

Mixed Direct & Framework Contract for Services (Number -945711-IPR-2023), issued by European Commission to Perma-Fix Environmental Services, Inc. and Campoverde Srl, dated December 18, 2023, as incorporated by reference from Exhibit 10.35 to the Company’s 2023 Form 10-K, filed on March 13, 2024. CERTAIN INFORMATION WITHIN THIS EXHIBIT HAS BEEN EXCLUDED BECAUSE IT IS NOT MATERIAL AND WOULD LIKELY CAUSE COMPETITIVE HARM TO THE COMPANY IF PUBLICLY DISCLOSED.

Exhibit 10.35 *CERTAIN INFORMATION IN THIS DOCUMENT HAS BEEN EXCLUDED FROM THIS PUBLIC FILING BECAUSE IT IS NOT MATERIAL AND WOULD LIKELY CAUSE COMPETITIVE HARM TO THE COMPANY IF PUBLICLY DISCLOSED MIXED DIRECT & FRAMEWORK CONTRACT FOR SERVICES NUMBER ‒ 945711- IPR- 2023 The European Atomic Energy Community (hereinafter referred to as “the Community”), represented by the European Commission (herei

List of Subsidiaries

EXHIBIT 21.1 LIST OF SUBSIDIARIES OF PERMA-FIX ENVIRONMENTAL SERVICES, INC. (THE “COMPANY”) Treatment Perma-Fix of Florida, Inc. (“PFF”), a Florida Corporation, is a 100% owned subsidiary of the Company. Diversified Scientific Services, Inc., (“DSSI”) a Tennessee Corporation, is a 100% owned subsidiary of the Company. East Tennessee Materials and Energy Corporation, (“M&EC”) a Tennessee Corporatio

Second Amendment to 2003 Outside Directors Stock Plan.

Exhibit 10.3 SECOND AMENDMENT to 2003 OUTSIDE DIRECTORS STOCK PLAN THIS SECOND AMENDMENT TO THE PERMA-FIX ENVIRONMENTAL SERVICES, INC. 2003 OUTSIDE DIRECTORS STOCK PLAN (the “Second Amendment”) was approved by the Board of Directors (the “Board”) of Perma-Fix Environmental Services, Inc. (the “Company”) to be effective on July 12, 2012, subject to the approval of the shareholders of the Company. W

*CERTAIN INFORMATION IN THIS DOCUMENT HAS BEEN EXCLUDED FROM THIS PUBLIC FILING BECAUSE IT IS NOT MATERAL AND WOULD LIKELY CAUSE COMPETITIVE HARM TO THE COMPANY IF PUBLICLY DISCLOSED EXECUTIVE VICE PRESIDENT OF STRATEGIC INITIATIVES Effective: Januar

Exhibit 99.3 *CERTAIN INFORMATION IN THIS DOCUMENT HAS BEEN EXCLUDED FROM THIS PUBLIC FILING BECAUSE IT IS NOT MATERAL AND WOULD LIKELY CAUSE COMPETITIVE HARM TO THE COMPANY IF PUBLICLY DISCLOSED EXECUTIVE VICE PRESIDENT OF STRATEGIC INITIATIVES Effective: January 1, 2024 EVP OF STRATEGIC INITIATIVES PURPOSE: To define the compensation plan for the Executive Vice President of Strategic Initiatives

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported) January 18, 2024 PERMA-FIX ENVIRONMENTAL SERVICES, INC. (Exact name of registrant as specified in its charter) Delaware 1-11596 58-1954497 (State or other jurisdiction of incorporation

*CERTAIN INFORMATION IN THIS DOCUMENT HAS BEEN EXCLUDED FROM THIS PUBLIC FILING BECAUSE IT IS NOT MATERAL AND WOULD LIKELY CAUSE COMPETITIVE HARM TO THE COMPANY IF PUBLICLY DISCLOSED EXECUTIVE VICE PRESIDENT AND CHIEF FINANCIAL OFFICER Effective: Jan

Exhibit 99.2 *CERTAIN INFORMATION IN THIS DOCUMENT HAS BEEN EXCLUDED FROM THIS PUBLIC FILING BECAUSE IT IS NOT MATERAL AND WOULD LIKELY CAUSE COMPETITIVE HARM TO THE COMPANY IF PUBLICLY DISCLOSED EXECUTIVE VICE PRESIDENT AND CHIEF FINANCIAL OFFICER Effective: January 1, 2024 EXECUTIVE VICE PRESIDENT AND CHIEF FINANCIAL OFFICER PURPOSE: To define the compensation plan for the Chief Financial Office

*CERTAIN INFORMATION IN THIS DOCUMENT HAS BEEN EXCLUDED FROM THIS PUBLIC FILING BECAUSE IT IS NOT MATERAL AND WOULD LIKELY CAUSE COMPETITIVE HARM TO THE COMPANY IF PUBLICLY DISCLOSED EXECUTIVE VICE PRESIDENT OF WASTE TREATMENT OPERATIONS Effective: J

Exhibit 99.4 *CERTAIN INFORMATION IN THIS DOCUMENT HAS BEEN EXCLUDED FROM THIS PUBLIC FILING BECAUSE IT IS NOT MATERAL AND WOULD LIKELY CAUSE COMPETITIVE HARM TO THE COMPANY IF PUBLICLY DISCLOSED EXECUTIVE VICE PRESIDENT OF WASTE TREATMENT OPERATIONS Effective: January 1, 2024 EXECUTIVE VICE PRESIDENT OF WASTE TREATMENT OPERATIONS PURPOSE: To define the compensation plan for the EXECUTIVE VICE PRE

*CERTAIN INFORMATION IN THIS DOCUMENT HAS BEEN EXCLUDED FROM THIS PUBLIC FILING BECAUSE IT IS NOT MATERAL AND WOULD LIKELY CAUSE COMPETITIVE HARM TO THE COMPANY IF PUBLICLY DISCLOSED CHIEF EXECUTIVE OFFICER AND PRESIDENT Effective: January 1, 2024 CH

Exhibit 99.1 *CERTAIN INFORMATION IN THIS DOCUMENT HAS BEEN EXCLUDED FROM THIS PUBLIC FILING BECAUSE IT IS NOT MATERAL AND WOULD LIKELY CAUSE COMPETITIVE HARM TO THE COMPANY IF PUBLICLY DISCLOSED CHIEF EXECUTIVE OFFICER AND PRESIDENT Effective: January 1, 2024 CHIEF EXECUTIVE OFFICER AND PRESIDENT PURPOSE: To define the compensation plan for the Chief Executive Officer (“CEO”) and President. SCOPE

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported) December 18, 2023 PERMA-FIX ENVIRONMENTAL SERVICES, INC. (Exact name of registrant as specified in its charter) Delaware 1-11596 58-1954497 (State or other jurisdiction of incorporatio

Perma-Fix Joint Venture Receives Formal Award of European Waste Treatment Contract Valued at up to EUR 50 Million

Exhibit 99.1 Perma-Fix Joint Venture Receives Formal Award of European Waste Treatment Contract Valued at up to EUR 50 Million ATLANTA – December 21, 2023 – Perma-Fix Environmental Services, Inc. (NASDAQ: PESI) (the “Company”) today announced that the European Commission (EC) has formally awarded the previously announced multi-year contract, valued at up to EUR 50 million, for the treatment of rad

Perma-Fix Joint Venture Receives Notice of Intent to Award European Waste Treatment Contract Valued at up to EUR 50 Million Provides update on Test Bed Initiative for offsite treatment and disposal of Hanford Low Activity Waste

Exhibit 99.1 Perma-Fix Joint Venture Receives Notice of Intent to Award European Waste Treatment Contract Valued at up to EUR 50 Million Provides update on Test Bed Initiative for offsite treatment and disposal of Hanford Low Activity Waste ATLANTA – November 28, 2023 – Perma-Fix Environmental Services, Inc. (NASDAQ: PESI) (the “Company”) today announced it has been notified by the European Commis

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported) November 28, 2023 PERMA-FIX ENVIRONMENTAL SERVICES, INC. (Exact name of registrant as specified in its charter) Delaware 1-11596 58-1954497 (State or other jurisdiction of incorporatio

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported) November 15, 2023 PERMA-FIX ENVIRONMENTAL SERVICES, INC. (Exact name of registrant as specified in its charter) Delaware . 1-11596 . 58-1954497 (State or other jurisdiction of incorpor

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 Form 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 Form 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2023 Or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 001-11596 PERMA-FIX ENVIRONMEN

Seventh Amendment to Second Amended and Restated Revolving Credit, Term Loan and Security Agreement dated July 31, 2023, between Perma-Fix Environmental Services, Inc. and PNC Bank, National Association, as incorporated by reference from Exhibit 4.1 to the Company’s Form 10-Q for the Quarter ended June 30, 2023 filed on August 3, 2023.

Exhibit 4.1 Execution Version SEVENTH AMENDMENT TO SECOND AMENDED AND RESTATED REVOLVING CREDIT, TERM LOAN AND SECURITY AGREEMENT THIS SEVENTH AMENDMENT TO SECOND AMENDED AND RESTATED REVOLVING CREDIT, TERM LOAN AND SECURITY AGREEMENT, dated as of July 31, 2023 (this “Amendment”), relating to the Credit Agreement referenced below, is by and among PERMA-FIX ENVIRONMENTAL SERVICES, INC., a Delaware

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 Form 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 Form 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2023 Or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 001-11596 PERMA-FIX ENVIRONMENTAL S

Term Note dated July 31, 2023, between Perma-Fix between Perma-Fix Environmental Services, Inc. and PNC Bank, National Association, as incorporated by reference from Exhibit 4.2 to the Company’s Form 10-Q for the Quarter ended June 30, 2023 filed on August 3, 2023.

Exhibit 4.2 TERM NOTE $2,500,000 July 31, 2023 This Term Note is executed and delivered under and pursuant to the terms of that certain Revolving Credit, Term Loan and Security Agreement dated as of October 31, 2011 (as amended, restated, supplemented or modified from time to time, the “Credit Agreement”) by and among each of the undersigned, as Borrower, the various financial institutions named t

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported) July 20, 2023 PERMA-FIX ENVIRONMENTAL SERVICES, INC. (Exact name of registrant as specified in its charter) Delaware 1-11596 58-1954497 (State or other jurisdiction (Commission (IRS Em

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported) July 14, 2023 PERMA-FIX ENVIRONMENTAL SERVICES, INC. (Exact name of registrant as specified in its charter) Delaware 1-11596 58-1954497 (State or other jurisdiction of incorporation) (

Perma-Fix Partners with UA Plumbers & Steamfitters Local 598 to Provide Safe and Reliable Option For Hanford Tank Waste Grouting and Disposal

Exhibit 99.1 Perma-Fix Partners with UA Plumbers & Steamfitters Local 598 to Provide Safe and Reliable Option For Hanford Tank Waste Grouting and Disposal ATLANTA – July 17, 2023 – Perma-Fix Environmental Services, Inc. (NASDAQ: PESI) (the “Company”) today announced it held a Project Labor Agreement (PLA) signing event with UA Plumbers & Steamfitters Local 598, on July 14, 2023. The goal of this p

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☒ Definitive Proxy State

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☐ Definitive Proxy State

Regulation FD Disclosure, Other Events, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported) June 1, 2023 PERMA-FIX ENVIRONMENTAL SERVICES, INC. (Exact name of registrant as specified in its charter) Delaware 1-11596 58-1954497 (State or other jurisdiction of incorporation) (C

May 30, 2023

May 30, 2023 VIA EDGAR U.S. Securities and Exchange Commission Division of Corporation Finance Office of Energy & Transportation 100 F Street, N.E. Washington, D.C. 20549 RE: Perma-Fix Environmental Services, Inc. Registration Statement on Form S-3 File No. 333-272074 Request for Acceleration Ladies and Gentlemen: Pursuant to Rule 461 under the Securities Act of 1933, as amended, Perma-Fix Environ

As filed with the Securities and Exchange Commission on May 19, 2023

S-3 1 forms-3.htm As filed with the Securities and Exchange Commission on May 19, 2023 Registration No. UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM S-3 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 PERMA-FIX ENVIRONMENTAL SERVICES, INC. (Exact name of registrant as specified in charter) DELAWARE 58-1954497 (State or other jurisdiction of incorporation or

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported) May 19, 2023 PERMA-FIX ENVIRONMENTAL SERVICES, INC. (Exact name of registrant as specified in its charter) Delaware . 1-11596 . 58-1954497 (State or other jurisdiction of incorporation

Calculation of Filing Fee Table.

Exhibit 107 Calculation of Filing Fee Tables Form S-8 (Form Type) Perma-Fix Environmental Services, Inc.

As Filed with the Securities and Exchange Commission on May 19, 2023

As Filed with the Securities and Exchange Commission on May 19, 2023 Registration No.

Amended and Restated 2003 Outside Directors Stock Plan (through Fifth Amendment adopted July 20, 2021)

Exhibit 99.1 PERMA-FIX ENVIRONMENTAL SERVICES, INC. AMENDED AND RESTATED 2003 OUTSIDE DIRECTORS STOCK PLAN (THROUGH FIFTH AMENDMENT ADOPTED JULY 20, 2021) ARTICLE I DEFINITIONS 1.1 Definitions. As used herein, the following terms have the meanings hereinafter set forth unless the context clearly indicates to the contrary: 1.1.1 “Board” shall mean the Board of Directors of the Company. 1.1.2 “Compa

Calculation of Filing Fee Table.

Exhibit 107 Calculation of Filing Fee Tables Form S-3 (Form Type) Perma-Fix Environmental Services, Inc.

Form 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 Form 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2023 Or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 1-11596 PERMA-FIX ENVIRONMENTAL SE

EMPLOYMENT AGREEMENT

Exhibit 99.2 EMPLOYMENT AGREEMENT THIS EMPLOYMENT AGREEMENT (“Agreement”) is made and entered into as of the 20th day of April, 2023, by and between PERMA-FIX ENVIRONMENTAL SERVICES, INC., a Delaware corporation (the “Company”), and Ben Naccarato (the “Executive”). W IT N E S S E T H: WHEREAS, the Company believes that the services, knowledge, and contributions of the Executive to the Company are

EMPLOYMENT AGREEMENT

Exhibit 99.5 EMPLOYMENT AGREEMENT THIS EMPLOYMENT AGREEMENT (“Agreement”) is made and entered into as of the 20th day of April, 2023, by and between PERMA-FIX ENVIRONMENTAL SERVICES, INC., a Delaware corporation (the “Company”), and Richard Grondin (the “Executive”). W IT N E S S E T H: WHEREAS, the Company believes that the services, knowledge, and contributions of the Executive to the Company ar

EMPLOYMENT AGREEMENT

Exhibit 99.3 EMPLOYMENT AGREEMENT THIS EMPLOYMENT AGREEMENT (“Agreement”) is made and entered into as of the 20th day of April, 2023, by and between PERMA-FIX ENVIRONMENTAL SERVICES, INC., a Delaware corporation (the “Company”), and Louis F. Centofanti (the “Executive”). W IT N E S S E T H: WHEREAS, the Company believes that the services, knowledge, and contributions of the Executive to the Compan

EMPLOYMENT AGREEMENT

Exhibit 99.4 EMPLOYMENT AGREEMENT THIS EMPLOYMENT AGREEMENT (“Agreement”) is made and entered into as of the 20th day of April, 2023, by and between PERMA-FIX ENVIRONMENTAL SERVICES, INC., a Delaware corporation (the “Company”), and Andrew Lombardo (the “Executive”). W IT N E S S E T H: WHEREAS, the Company believes that the services, knowledge, and contributions of the Executive to the Company ar

Form 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported) April 20, 2023 PERMA-FIX ENVIRONMENTAL SERVICES, INC. (Exact name of registrant as specified in its charter) Delaware . 1-11596 . 58-1954497 (State or other jurisdiction of incorporati

EMPLOYMENT AGREEMENT

Exhibit 99.1 EMPLOYMENT AGREEMENT THIS EMPLOYMENT AGREEMENT (“Agreement”) is made and entered into as of the 20th day of April, 2023, by and between PERMA-FIX ENVIRONMENTAL SERVICES, INC., a Delaware corporation (the “Company”), and Mark Duff (the “Executive”). W IT N E S S E T H: WHEREAS, the Company believes that the services, knowledge, and contributions of the Executive to the Company are of c

Second Amended and Restated Bylaws, as amended effective April 20, 2023, of Perma-Fix Environmental Services, Inc., as incorporated by reference from Exhibit 3(ii) to the Company’s 8-K filed on April 26, 2023.

Exhibit 3(ii) SECOND AMENDED AND RESTATED BYLAWS OF PERMA-FIX ENVIRONMENTAL SERVICES, INC.

PESI / Perma-Fix Environmental Services, Inc. / HEARTLAND ADVISORS INC Activist Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 10) Perma-Fix Environmental Services, Inc. (Name of Issuer) Common Stock, $0.001 Par Value (Title of Class of Securities) 714157203 (CUSIP Number) Vinita K. Paul Vice President, Chief Compliance Officer, General Counsel and Secretary Heartland Advisors, Inc.

PESI / Perma-Fix Environmental Services, Inc. / HEARTLAND ADVISORS INC Activist Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 9) Perma-Fix Environmental Services, Inc. (Name of Issuer) Common Stock, $0.001 Par Value (Title of Class of Securities) 714157203 (CUSIP Number) Vinita K. Paul Vice President, Chief Compliance Officer, General Counsel and Secretary Heartland Advisors, Inc.

Form 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15 (d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2022 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15 (d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 1-11596 PERMA-FIX ENVIRONMENTAL SERVI

Perma-Fix Reports Financial Results and Provides Business Update for 2022 Treatment Segment on growth path heading into 2023 with increased waste receipts and improved backlog Services Segment secures important projects expected to begin in Q2 2023 R

Exhibit 99.2 Perma-Fix Reports Financial Results and Provides Business Update for 2022 Treatment Segment on growth path heading into 2023 with increased waste receipts and improved backlog Services Segment secures important projects expected to begin in Q2 2023 Reports progress on key strategic initiatives ATLANTA – March 23, 2023 – Perma-Fix Environmental Services, Inc. (NASDAQ: PESI) (the “Compa

List of Subsidiaries

Exhibit 21.1 LIST OF SUBSIDIARIES OF PERMA-FIX ENVIRONMENTAL SERVICES, INC. (THE “COMPANY”) Treatment Perma-Fix of Florida, Inc. (“PFF”), a Florida Corporation, is a 100% owned subsidiary of the Company. Diversified Scientific Services, Inc., (“DSSI”) a Tennessee Corporation, is a 100% owned subsidiary of the Company. East Tennessee Materials and Energy Corporation, (“M&EC”) a Tennessee Corporatio

Perma-Fix Schedules Fourth Quarter and Fiscal 2022 Business Update Conference Call

Exhibit 99.1 Perma-Fix Schedules Fourth Quarter and Fiscal 2022 Business Update Conference Call ATLANTA – March 20, 2023, Perma-Fix Environmental Services, Inc. (NASDAQ: PESI) (the “Company”) today announced it will host a conference call at 11:00 AM Eastern Time on Thursday, March 23, 2023. A webcast of the call may be accessed at https://www.webcaster4.com/Webcast/Page/2243/47895 or in the inves

Sixth Amendment to Second Amended and Restated Revolving Credit, Term Loan and Security Agreement dated March 21, 2023, between Perma-Fix Environmental Services, Inc. and PNC Bank, National Association, as incorporated by reference from Exhibit 4.3 to the Company’s 2022 Form 10-K filed on March 23, 2023.

Exhibit 4.3 SIXTH AMENDMENT TO SECOND AMENDED AND RESTATED REVOLVING CREDIT, TERM LOAN AND SECURITY AGREEMENT THIS SIXTH AMENDMENT TO SECOND AMENDED AND RESTATED REVOLVING CREDIT, TERM LOAN AND SECURITY AGREEMENT, dated as of March 21, 2023 (this “Amendment”), relating to the Credit Agreement referenced below, is by and among PERMA-FIX ENVIRONMENTAL SERVICES, INC., a Delaware corporation (the “Bor

Form 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported) March 23, 2023 PERMA-FIX ENVIRONMENTAL SERVICES, INC. (Exact name of registrant as specified in its charter) Delaware 1-11596 58-1954497 (State or other jurisdiction of incorporation)

PESI / Perma-Fix Environmental Services, Inc. / HEARTLAND ADVISORS INC Activist Investment

SC 13D/A 1 heartlandpesi13da.htm UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 8) Perma-Fix Environmental Services, Inc. (Name of Issuer) Common Stock, $0.001 Par Value (Title of Class of Securities) 714157203 (CUSIP Number) Vinita K. Paul Vice President, Chief Compliance Officer, General Counsel and Se

PERMA-FIXENVIRONMENTAL SERVICES, INC 2017 STOCK OPTION PLAN INCENTIVE STOCK OPTION AGREEMENT

Exhibit 99.6 ISO No. PERMA-FIXENVIRONMENTAL SERVICES, INC 2017 STOCK OPTION PLAN INCENTIVE STOCK OPTION AGREEMENT Participant Name: Mark Duff Grant Date: January 19, 2023 Shares Subject to Options: 70,000 Vesting Schedule Expiration Date: January 19, 2029 Exercise Price: $3.95 Exercise Dates Percent Exercisable 01/19/2024 20% 01/19/2025 20% 01/19/2026 20% 01/19/2027 20% 01/19/2028 20% PERMA-FIX EN

PERMA-FIXENVIRONMENTAL SERVICES, INC 2017 STOCK OPTION PLAN INCENTIVE STOCK OPTION AGREEMENT

EX-99.7 8 ex99-7.htm Exhibit 99.7 ISO No. PERMA-FIXENVIRONMENTAL SERVICES, INC 2017 STOCK OPTION PLAN INCENTIVE STOCK OPTION AGREEMENT Participant Name: Ben Naccarato Grant Date: January 19, 2023 Shares Subject to Options: 40,000 Vesting Schedule Expiration Date: January 19, 2029 Exercise Price: $3.95 Exercise Dates Percent Exercisable 01/19/2024 20% 01/19/2025 20% 01/19/2026 20% 01/19/2027 20% 01

*CERTAIN INFORMATION IN THIS DOCUMENT HAS BEEN EXCLUDED FROM THIS PUBLIC FILING BECAUSE IT IS NOT MATERAL AND WOULD LIKELY CAUSE COMPETITIVE HARM TO THE COMPANY IF PUBLICLY DISCLOSED CHIEF EXECUTIVE OFFICER AND PRESIDENT Effective: January 1, 2023 CH

Exhibit 99.1 *CERTAIN INFORMATION IN THIS DOCUMENT HAS BEEN EXCLUDED FROM THIS PUBLIC FILING BECAUSE IT IS NOT MATERAL AND WOULD LIKELY CAUSE COMPETITIVE HARM TO THE COMPANY IF PUBLICLY DISCLOSED CHIEF EXECUTIVE OFFICER AND PRESIDENT Effective: January 1, 2023 CHIEF EXECUTIVE OFFICER AND PRESIDENT PURPOSE: To define the compensation plan for the Chief Executive Officer (“CEO”) and President. SCOPE

PERMA-FIXENVIRONMENTAL SERVICES, INC 2017 STOCK OPTION PLAN INCENTIVE STOCK OPTION AGREEMENT

Exhibit 99.9 ISO No. PERMA-FIXENVIRONMENTAL SERVICES, INC 2017 STOCK OPTION PLAN INCENTIVE STOCK OPTION AGREEMENT Participant Name: Andy Lombardo Grant Date: January 19, 2023 Shares Subject to Options: 30,000 Vesting Schedule Expiration Date: January 19, 2029 Exercise Price: $3.95 Exercise Dates Percent Exercisable 01/19/2024 20% 01/19/2025 20% 01/19/2026 20% 01/19/2027 20% 01/19/2028 20% PERMA-FI

PERMA-FIXENVIRONMENTAL SERVICES, INC 2017 STOCK OPTION PLAN INCENTIVE STOCK OPTION AGREEMENT

Exhibit 99.10 ISO No. PERMA-FIXENVIRONMENTAL SERVICES, INC 2017 STOCK OPTION PLAN INCENTIVE STOCK OPTION AGREEMENT Participant Name: Richard Grondin Grant Date: January 19, 2023 Shares Subject to Options: 30,000 Vesting Schedule Expiration Date: January 19, 2029 Exercise Price: $3.95 Exercise Dates Percent Exercisable 01/19/2024 20% 01/19/2025 20% 01/19/2026 20% 01/19/2027 20% 01/19/2028 20% PERMA

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported) January 19, 2023 PERMA-FIX ENVIRONMENTAL SERVICES, INC. (Exact name of registrant as specified in its charter) Delaware . 001-11596 . 58-1954497 (State or other jurisdiction of incorpo

*CERTAIN INFORMATION IN THIS DOCUMENT HAS BEEN EXCLUDED FROM THIS PUBLIC FILING BECAUSE IT IS NOT MATERAL AND WOULD LIKELY CAUSE COMPETITIVE HARM TO THE COMPANY IF PUBLICLY DISCLOSED EXECUTIVE VICE PRESIDENT OF WASTE TREATMENT OPERATIONS Effective: J

Exhibit 99.5 *CERTAIN INFORMATION IN THIS DOCUMENT HAS BEEN EXCLUDED FROM THIS PUBLIC FILING BECAUSE IT IS NOT MATERAL AND WOULD LIKELY CAUSE COMPETITIVE HARM TO THE COMPANY IF PUBLICLY DISCLOSED EXECUTIVE VICE PRESIDENT OF WASTE TREATMENT OPERATIONS Effective: January 1, 2023 EXECUTIVE VICE PRESIDENT OF WASTE TREATMENT OPERATIONS PURPOSE: To define the compensation plan for the EXECUTIVE VICE PRE

*CERTAIN INFORMATION IN THIS DOCUMENT HAS BEEN EXCLUDED FROM THIS PUBLIC FILING BECAUSE IT IS NOT MATERAL AND WOULD LIKELY CAUSE COMPETITIVE HARM TO THE COMPANY IF PUBLICLY DISCLOSED EXECUTIVE VICE PRESIDENT OF STRATEGIC INITIATIVES Effective: Januar

Exhibit 99.3 *CERTAIN INFORMATION IN THIS DOCUMENT HAS BEEN EXCLUDED FROM THIS PUBLIC FILING BECAUSE IT IS NOT MATERAL AND WOULD LIKELY CAUSE COMPETITIVE HARM TO THE COMPANY IF PUBLICLY DISCLOSED EXECUTIVE VICE PRESIDENT OF STRATEGIC INITIATIVES Effective: January 1, 2023 EVP OF STRATEGIC INITIATIVES PURPOSE: To define the compensation plan for the Executive Vice President of Strategic Initiatives

*CERTAIN INFORMATION IN THIS DOCUMENT HAS BEEN EXCLUDED FROM THIS PUBLIC FILING BECAUSE IT IS NOT MATERAL AND WOULD LIKELY CAUSE COMPETITIVE HARM TO THE COMPANY IF PUBLICLY DISCLOSED EXECUTIVE VICE PRESIDENT OF NUCLEAR & TECHNICAL SERVICES Effective:

Exhibit 99.4 *CERTAIN INFORMATION IN THIS DOCUMENT HAS BEEN EXCLUDED FROM THIS PUBLIC FILING BECAUSE IT IS NOT MATERAL AND WOULD LIKELY CAUSE COMPETITIVE HARM TO THE COMPANY IF PUBLICLY DISCLOSED EXECUTIVE VICE PRESIDENT OF NUCLEAR & TECHNICAL SERVICES Effective: January 1, 2023 EXECUTIVE VICE PRESIDENT OF NUCLEAR & TECHNICAL SERVICES PURPOSE: To define the compensation plan for the EXECUTIVE VICE

PERMA-FIXENVIRONMENTAL SERVICES, INC 2017 STOCK OPTION PLAN INCENTIVE STOCK OPTION AGREEMENT

Exhibit 99.8 ISO No. PERMA-FIXENVIRONMENTAL SERVICES, INC 2017 STOCK OPTION PLAN INCENTIVE STOCK OPTION AGREEMENT Participant Name: Dr. Louis Centofanti Grant Date: January 19, 2023 Shares Subject to Options: 30,000 Vesting Schedule Expiration Date: January 19, 2029 Exercise Price: $3.95 Exercise Dates Percent Exercisable 01/19/2024 20% 01/19/2025 20% 01/19/2026 20% 01/19/2027 20% 01/19/2028 20% P

*CERTAIN INFORMATION IN THIS DOCUMENT HAS BEEN EXCLUDED FROM THIS PUBLIC FILING BECAUSE IT IS NOT MATERAL AND WOULD LIKELY CAUSE COMPETITIVE HARM TO THE COMPANY IF PUBLICLY DISCLOSED EXECUTIVE VICE PRESIDENT AND CHIEF FINANCIAL OFFICER Effective: Jan

Exhibit 99.2 *CERTAIN INFORMATION IN THIS DOCUMENT HAS BEEN EXCLUDED FROM THIS PUBLIC FILING BECAUSE IT IS NOT MATERAL AND WOULD LIKELY CAUSE COMPETITIVE HARM TO THE COMPANY IF PUBLICLY DISCLOSED EXECUTIVE VICE PRESIDENT AND CHIEF FINANCIAL OFFICER Effective: January 1, 2023 EXECUTIVE VICE PRESIDENT AND CHIEF FINANCIAL OFFICER PURPOSE: To define the compensation plan for the Chief Financial Office

POWER OF ATTORNEY Power of Attorney For Executing Forms 3, 4 and 5 and Schedule 13G/13D

EX-2 3 exhibit2.htm POWER OF ATTORNEY Exhibit 2 POWER OF ATTORNEY Power of Attorney For Executing Forms 3, 4 and 5 and Schedule 13G/13D Know all by these present, that the undersigned constitutes and appoints Vinita K. Paul his true and lawful attorney-in-fact to: (1) complete and execute for and on behalf of the undersigned Forms 3, 4 and 5 in accordance with Section 16(a) of the Securities Excha

JOINT FILING AGREEMENT

EX-1 2 exhibit1.htm JOINT FILING AGREEMENT Exhibit 1 JOINT FILING AGREEMENT In accordance with Rule 13d-1(k) under the Securities Exchange Act of 1934, as amended, each of the undersigned hereby agrees to the joint filing with the other reporting persons of a statement on Schedule 13D (including amendments thereto) with respect to the Common Stock, $0.001 par value, of Perma-Fix Environmental Serv

PESI / Perma-Fix Environmental Services, Inc. / HEARTLAND ADVISORS INC Activist Investment

SC 13D/A 1 heartlandpesi13da.htm UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 7) Perma-Fix Environmental Services, Inc. (Name of Issuer) Common Stock, $0.001 Par Value (Title of Class of Securities) 714157203 (CUSIP Number) Vinita K. Paul Vice President, Chief Compliance Officer, General Counsel and Se

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 Form 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 Form 10-Q ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2022 Or ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 001-11596 PERMA-FIX ENVIRONMEN

Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant, Entry into a Material Definitive Agreement, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported) August 29, 2022 PERMA-FIX ENVIRONMENTAL SERVICES, INC. (Exact name of registrant as specified in its charter) Delaware 001-11596 58-1954497 (State or other jurisdiction of incorporatio

Revised Second Amended and Restated Revolving Credit, Term Loan and Security Agreement referenced as Annex A in the Fifth Amendment, as incorporated by reference from Exhibit 4.2 to the Company’s Form 8-K filed on August 29, 2022.

Exhibit 4.2 SECOND AMENDED AND RESTATED REVOLVING CREDIT, TERM LOAN AND SECURITY AGREEMENT PNC BANK, NATIONAL ASSOCIATION (AS LENDER AND AS AGENT) WITH PERMA-FIX ENVIRONMENTAL SERVICES, INC. (BORROWER) MAY 8, 2020 TABLE OF CONTENTS ARTICLE I DEFINITIONS 1 1.1. Accounting Terms. 1 1.2. General Terms. 1 1.3. Uniform Commercial Code Terms. 30 1.4. Certain Matters of Construction. 31 1.5. Term SOFR No

Fifth Amendment to Second Amended and Restated Revolving Credit, Term Loan and Security Agreement dated August 29, 2022, as incorporated by reference from Exhibit 4.1 to the Company’s Form 8-K filed on August 29, 2022.

Exhibit 4.1 FIFTH AMENDMENT TO SECOND AMENDED AND RESTATED REVOLVING CREDIT, TERM LOAN AND SECURITY AGREEMENT THIS FIFTH AMENDMENT TO SECOND AMENDED AND RESTATED REVOLVING CREDIT, TERM LOAN AND SECURITY AGREEMENT, dated as of August 29, 2022 (this ?Amendment?), relating to the Credit Agreement referenced below, is by and among PERMA-FIX ENVIRONMENTAL SERVICES, INC., a Delaware corporation (the ?Bo

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 Form 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 Form 10-Q ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2022 Or ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 001-11596 PERMA-FIX ENVIRONMENTAL S

Fourth Amendment to Second Amended and Restated Revolving Credit, Term Loan and Security Agreement between Perma-Fix Environmental Services, Inc. and PNC Bank, National Association (as Lender and as Agent), dated August 2, 2022.

Exhibit 4.3 FOURTH AMENDMENT TO SECOND AMENDED AND RESTATED REVOLVING CREDIT, TERM LOAN AND SECURITY AGREEMENT AND WAIVER THIS FOURTH AMENDMENT TO SECOND AMENDED AND RESTATED REVOLVING CREDIT, TERM LOAN AND SECURITY AGREEMENT AND WAIVER, dated as of August 2, 2022 (this ?Amendment?), relating to the Credit Agreement referenced below, is by and among PERMA-FIX ENVIRONMENTAL SERVICES, INC., a Delawa

Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported) July 21, 2022 PERMA-FIX ENVIRONMENTAL SERVICES, INC. (Exact name of registrant as specified in its charter) Delaware 1-11596 58-1954497 (State or other jurisdiction of incorporation) (

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ? Filed by a Party other than the Registrant ? Check the appropriate box: ? Preliminary Proxy Statement ? Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ? Definitive Proxy State

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

DEF 14A 1 formdef14a.htm UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 Form 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 Form 10-Q ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2022 Or ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 1-11596 PERMA-FIX ENVIRONMENTAL SE

Third Amendment to Second Amended and Restated Revolving Credit, Term Loan and Security Agreement between Perma-Fix Environmental Services, Inc. and PNC Bank, National Association (as Lender and as Agent), dated March 29, 2022, as incorporated by reference from Exhibit 4.1 to the Company’s Form 8-K filed on April 4, 2022.

Exhibit 4.4 THIRD AMENDMENT TO SECOND AMENDED AND RESTATED REVOLVING CREDIT, TERM LOAN AND SECURITY AGREEMENT AND WAIVER THIS THIRD AMENDMENT TO SECOND AMENDED AND RESTATED REVOLVING CREDIT, TERM LOAN AND SECURITY AGREEMENT AND WAIVER, dated as of March 29, 2022 (this ?Amendment?), relating to the Credit Agreement referenced below, is by and among PERMA-FIX ENVIRONMENTAL SERVICES, INC., a Delaware

Joint Venture Term Sheet between Springfields Fuels Limited, an affiliate of Westinghouse, and the Company, as incorporated by reference from Exhibit 10.42 to the Company’s 2021 Form 10-K filed on April 6, 2022. CERTAIN INFORMATION WITHIN THIS EXHIBIT HAS BEEN EXCLUDED BECAUSE IT IS NOT MATERIAL AND WOULD LIKELY CAUSE COMPETITIVE HARM TO THE COMPANY IF PUBLICLY DISCLOSED.

Exhibit 10.42 [***] INDICATES CERTAIN INFORMATION IN THIS DOCUMENT WHICH HAS BEEN OMITTED FROM THIS PUBLIC FILING BECAUSE IT IS NOT MATERIAL AND WOULD LIKELY CAUSE COMPETITIVE HARM TO THE COMPANY IF PUBLICLY DISCLOSED. SPRINGFIELDS FUELS LTD. PROPRIETARY CLASS 2 PERMA-FIX CONFIDENTIAL PROJECT [***] -TERM SHEET (SUBJECT TO CONTRACT) This Term Sheet (?Term Sheet?) is dated this day of March, 2022 by

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K ? ANNUAL REPORT PURSUANT TO SECTION 13 OR 15 (d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2021 or ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15 (d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 1-11596 PERMA-FIX ENVIRONMENTAL SERVI

List of Subsidiaries

EXHIBIT 21.1 LIST OF SUBSIDIARIES OF PERMA-FIX ENVIRONMENTAL SERVICES, INC. (THE ?COMPANY?) Treatment Perma-Fix of Florida, Inc. (?PFF?), a Florida Corporation, is a 100% owned subsidiary of the Company. Diversified Scientific Services, Inc., (?DSSI?) a Tennessee Corporation, is a 100% owned subsidiary of the Company. East Tennessee Materials and Energy Corporation, (?M&EC?) a Tennessee Corporatio

Third Amendment to Second Amended and Restated Revolving Credit, Term Loan and Security Agreement between Perma-Fix Environmental Services, Inc. and PNC Bank, National Association (as Lender and as Agent), dated March 29, 2022, as incorporated by reference from Exhibit 4.1 to the Company’s Form 8-K filed on April 4, 2022.

Exhibit 4.1 THIRD AMENDMENT TO SECOND AMENDED AND RESTATED REVOLVING CREDIT, TERM LOAN AND SECURITY AGREEMENT AND WAIVER THIS THIRD AMENDMENT TO SECOND AMENDED AND RESTATED REVOLVING CREDIT, TERM LOAN AND SECURITY AGREEMENT AND WAIVER, dated as of March 29, 2022 (this ?Amendment?), relating to the Credit Agreement referenced below, is by and among PERMA-FIX ENVIRONMENTAL SERVICES, INC., a Delaware

Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant, Entry into a Material Definitive Agreement, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported) March 29, 2022 PERMA-FIX ENVIRONMENTAL SERVICES, INC. (Exact name of registrant as specified in its charter) Delaware . 001-11596 . 58-1954497 (State or other jurisdiction of incorpora

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 12b-25 NOTIFICATION OF LATE FILING

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 12b-25 NOTIFICATION OF LATE FILING (Checkone) ? Form 10-K ? Form 20-F ? Form 11-K ? Form 10-Q ? Form 10-D ? Form N-CEN ? Form N-CSR For Period Ended: December 31, 2021 ? Transition Report on Form 10-K ?Transition Report on Form 20-F ?Transition Report on Form 11-K ?Transition Report on Form 10-Q For the Transition Period

*CERTAIN INFORMATION IN THIS DOCUMENT HAS BEEN EXCLUDED FROM THIS PUBLIC FILING BECAUSE IT IS NOT MATERAL AND WOULD LIKELY CAUSE COMPETITIVE HARM TO THE COMPANY IF PUBLICLY DISCLOSED EXECUTIVE VICE PRESIDENT OF NUCLEAR & TECHNICAL SERVICES Effective:

Exhibit 99.8 *CERTAIN INFORMATION IN THIS DOCUMENT HAS BEEN EXCLUDED FROM THIS PUBLIC FILING BECAUSE IT IS NOT MATERAL AND WOULD LIKELY CAUSE COMPETITIVE HARM TO THE COMPANY IF PUBLICLY DISCLOSED EXECUTIVE VICE PRESIDENT OF NUCLEAR & TECHNICAL SERVICES Effective: January 1, 2022 EXECUTIVE VICE PRESIDENT OF NUCLEAR & TECHNICAL SERVICES PURPOSE: To define the compensation plan for the EXECUTIVE VICE

*CERTAIN INFORMATION IN THIS DOCUMENT HAS BEEN EXCLUDED FROM THIS PUBLIC FILING BECAUSE IT IS NOT MATERAL AND WOULD LIKELY CAUSE COMPETITIVE HARM TO THE COMPANY IF PUBLICLY DISCLOSED EXECUTIVE VICE PRESIDENT OF STRATEGIC INITIATIVES Effective: Januar

Exhibit 99.7 *CERTAIN INFORMATION IN THIS DOCUMENT HAS BEEN EXCLUDED FROM THIS PUBLIC FILING BECAUSE IT IS NOT MATERAL AND WOULD LIKELY CAUSE COMPETITIVE HARM TO THE COMPANY IF PUBLICLY DISCLOSED EXECUTIVE VICE PRESIDENT OF STRATEGIC INITIATIVES Effective: January 1, 2022 EVP OF STRATEGIC INITIATIVES PURPOSE: To define the compensation plan for the Executive Vice President of Strategic Initiatives

THIRD AMENDMENT 2017 STOCK OPTION PLAN NONQUALIFIED STOCK OPTION AGREEMENT DATED JULY 27, 2017, BY AND BETWEEN PERMA-FIX ENVIRNOMENTAL SERVICES, INC. AND ROBERT FERGUSON (“PARTICIPANT”) (“2017 NONQUALIFED STOCK OPTION AGREEMENT”)

EX-99.4 2 ex99-4.htm Exhibit 99.4 THIRD AMENDMENT to 2017 STOCK OPTION PLAN NONQUALIFIED STOCK OPTION AGREEMENT DATED JULY 27, 2017, BY AND BETWEEN PERMA-FIX ENVIRNOMENTAL SERVICES, INC. AND ROBERT FERGUSON (“PARTICIPANT”) (“2017 NONQUALIFED STOCK OPTION AGREEMENT”) WHEREAS, on July 27, 2017, Robert Ferguson (the “Participant”) and Perma-Fix Environmental Services, Inc. (the “Company”) entered int

*CERTAIN INFORMATION IN THIS DOCUMENT HAS BEEN EXCLUDED FROM THIS PUBLIC FILING BECAUSE IT IS NOT MATERAL AND WOULD LIKELY CAUSE COMPETITIVE HARM TO THE COMPANY IF PUBLICLY DISCLOSED EXECUTIVE VICE PRESIDENT OF WASTE TREATMENT OPERATIONS Effective: J

Exhibit 99.9 *CERTAIN INFORMATION IN THIS DOCUMENT HAS BEEN EXCLUDED FROM THIS PUBLIC FILING BECAUSE IT IS NOT MATERAL AND WOULD LIKELY CAUSE COMPETITIVE HARM TO THE COMPANY IF PUBLICLY DISCLOSED EXECUTIVE VICE PRESIDENT OF WASTE TREATMENT OPERATIONS Effective: January 1, 2022 EXECUTIVE VICE PRESIDENT OF WASTE TREATMENT OPERATIONS PURPOSE: To define the compensation plan for the EXECUTIVE VICE PRE

Entry into a Material Definitive Agreement, Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported) January 20, 2022 PERMA-FIX ENVIRONMENTAL SERVICES, INC. (Exact name of registrant as specified in its charter) Delaware . 1-11596 58-1954497 (State or other jurisdiction of incorporati

*CERTAIN INFORMATION IN THIS DOCUMENT HAS BEEN EXCLUDED FROM THIS PUBLIC FILING BECAUSE IT IS NOT MATERAL AND WOULD LIKELY CAUSE COMPETITIVE HARM TO THE COMPANY IF PUBLICLY DISCLOSED CHIEF EXECUTIVE OFFICER AND PRESIDENT Effective: January 1, 2022 CH

Exhibit 99.5 *CERTAIN INFORMATION IN THIS DOCUMENT HAS BEEN EXCLUDED FROM THIS PUBLIC FILING BECAUSE IT IS NOT MATERAL AND WOULD LIKELY CAUSE COMPETITIVE HARM TO THE COMPANY IF PUBLICLY DISCLOSED CHIEF EXECUTIVE OFFICER AND PRESIDENT Effective: January 1, 2022 CHIEF EXECUTIVE OFFICER AND PRESIDENT PURPOSE: To define the compensation plan for the Chief Executive Officer (?CEO?) and President. SCOPE

*CERTAIN INFORMATION IN THIS DOCUMENT HAS BEEN EXCLUDED FROM THIS PUBLIC FILING BECAUSE IT IS NOT MATERAL AND WOULD LIKELY CAUSE COMPETITIVE HARM TO THE COMPANY IF PUBLICLY DISCLOSED EXECUTIVE VICE PRESIDENT AND CHIEF FINANCIAL OFFICER Effective: Jan

Exhibit 99.6 *CERTAIN INFORMATION IN THIS DOCUMENT HAS BEEN EXCLUDED FROM THIS PUBLIC FILING BECAUSE IT IS NOT MATERAL AND WOULD LIKELY CAUSE COMPETITIVE HARM TO THE COMPANY IF PUBLICLY DISCLOSED EXECUTIVE VICE PRESIDENT AND CHIEF FINANCIAL OFFICER Effective: January 1, 2022 EXECUTIVE VICE PRESIDENT AND CHIEF FINANCIAL OFFICER PURPOSE: To define the compensation plan for the Chief Financial Office

Other Events, Results of Operations and Financial Condition, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported) December 30, 2021 PERMA-FIX ENVIRONMENTAL SERVICES, INC. (Exact name of registrant as specified in its charter) Delaware . 001-11596 . 58-1954497 (State or other jurisdiction of incorp

Termination of a Material Definitive Agreement

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported) November 24, 2021 PERMA-FIX ENVIRONMENTAL SERVICES, INC. (Exact name of registrant as specified in its charter) Delaware . 001-11596 . 58-1954497 (State or other jurisdiction of incorp

PESI / Perma-Fix Environmental Services, Inc. / HEARTLAND ADVISORS INC - AMENDMENT NO. 6 TO SCHEDULE 13D Activist Investment

SCHEDULE 13D UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 6) Perma-Fix Environmental Services, Inc. (Name of Issuer) Common Stock, $0.001 Par Value (Title of Class of Securities) 714157203 (CUSIP Number) Vinita K. Paul Vice President, Chief Compliance Officer, General Counsel and Secretary Heartland Ad

Solicitation, Offer and Award dated September 17, 2021 issued to Perma-Fix Environmental Services, Inc. by Norfolk Naval Shipyard, as incorporated by reference from Exhibit 10.1 to the Company Form 10- for the Quarter Ended September 30, 2021 filed on November 12, 2021.

Exhibit 10.1 N4215821C0004 Page 2 of 79 Section B - Supplies or Services and Prices ITEM NO SUPPLIES/SERVICES QUANTITY UNIT UNIT PRICE AMOUNT 0001 1 Job $39,998,941.49 $39,998,941.49 EX-MCKEE - Article 520 Release FFP The contractor shall perform in accordance with the Statement of Work (SOW) contained within Section C and Attachments listed within Section J. FOB: Destination MILSTRIP: N0002421RX0

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 Form 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 Form 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2021 Or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 001-111596 PERMA-FIX ENVIRONME

PERMA-FIXENVIRONMENTAL SERVICES, INC 2017 STOCK OPTION PLAN INCENTIVE STOCK OPTION AGREEMENT

Exhibit 99.1 ISO No. PERMA-FIXENVIRONMENTAL SERVICES, INC 2017 STOCK OPTION PLAN INCENTIVE STOCK OPTION AGREEMENT Participant Name: Mark Duff Grant Date: October 14, 2021 Vesting Schedule Shares Subject to Options: 50,000 Exercise Dates Percent Exercisable Expiration Date: October 14, 2027 10/14/2022 20% Exercise Price: $7.005 10/14/2023 20% 10/14/2024 20% 10/14/2025 20% 10/14/2026 20% PERMA-FIX E

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K/A Amendment No. 1 CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported) October 14, 2021 PERMA-FIX ENVIRONMENTAL SERVICES, INC. (Exact name of registrant as specified in its charter) Delaware 001-11596 58-1954497 (State or other jurisdict

PERMA-FIXENVIRONMENTAL SERVICES, INC 2017 STOCK OPTION PLAN INCENTIVE STOCK OPTION AGREEMENT

Exhibit 99.4 ISO No. PERMA-FIXENVIRONMENTAL SERVICES, INC 2017 STOCK OPTION PLAN INCENTIVE STOCK OPTION AGREEMENT Participant Name: Richard Grondin Grant Date: October 14, 2021 Vesting Schedule Percent Shares Subject to Options: 25,000 Exercise Dates Exercisable Expiration Date: October 14, 2027 10/14/2022 20% Exercise Price: $7.005 10/14/2023 20% 10/14/2024 20% 10/14/2025 20% 10/14/2026 20% PERMA

PERMA-FIXENVIRONMENTAL SERVICES, INC 2017 STOCK OPTION PLAN INCENTIVE STOCK OPTION AGREEMENT

Exhibit 99.5 ISO No. PERMA-FIXENVIRONMENTAL SERVICES, INC 2017 STOCK OPTION PLAN INCENTIVE STOCK OPTION AGREEMENT Participant Name: Andy Lombardo Grant Date: October 14, 2021 Vesting Schedule Percent Shares Subject to Options: 25,000 Exercise Dates Exercisable Expiration Date: October 14, 2027 10/14/2022 20% Exercise Price: $7.005 10/14/2023 20% 10/14/2024 20% 10/14/2025 20% 10/14/2026 20% PERMA-F

PERMA-FIXENVIRONMENTAL SERVICES, INC 2017 STOCK OPTION PLAN INCENTIVE STOCK OPTION AGREEMENT

Exhibit 99.3 ISO No. PERMA-FIXENVIRONMENTAL SERVICES, INC 2017 STOCK OPTION PLAN INCENTIVE STOCK OPTION AGREEMENT Participant Name: Louis Centofanti Grant Date: October 14, 2021 Vesting Schedule Percent Shares Subject to Options: 20,000 Exercise Dates Exercisable Expiration Date: October 14, 2027 10/14/2022 20% Exercise Price: $7.005 10/14/2023 20% 10/14/2024 20% 10/14/2025 20% 10/14/2026 20% PERM

PERMA-FIXENVIRONMENTAL SERVICES, INC 2017 STOCK OPTION PLAN INCENTIVE STOCK OPTION AGREEMENT

EX-99.2 3 ex99-2.htm Exhibit 99.2 ISO No. PERMA-FIXENVIRONMENTAL SERVICES, INC 2017 STOCK OPTION PLAN INCENTIVE STOCK OPTION AGREEMENT Participant Name: Ben Naccarato Grant Date: October 14, 2021 Vesting Schedule Percent Shares Subject to Options: 25,000 Exercise Dates Exercisable Expiration Date: October 14, 2027 10/14/2022 20% Exercise Price: $7.005 10/14/2023 20% 10/14/2024 20% 10/14/2025 20% 1

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported) October 14, 2021 PERMA-FIX ENVIRONMENTAL SERVICES, INC. (Exact name of registrant as specified in its charter) Delaware 001-11596 58-1954497 (State or other jurisdiction of incorporati

PERMA-FIXENVIRONMENTAL SERVICES, INC 2017 STOCK OPTION PLAN INCENTIVE STOCK OPTION AGREEMENT

Exhibit 99.2 ISO No. PERMA-FIXENVIRONMENTAL SERVICES, INC 2017 STOCK OPTION PLAN INCENTIVE STOCK OPTION AGREEMENT Participant Name: Ben Naccarato Grant Date: October 14, 2021 Vesting Schedule Shares Subject to Options: 25,000 Exercise Dates Percent Exercisable Expiration Date: October 14, 2021 10/14/2022 20% Exercise Price: $7.005 10/14/2023 20% 10/14/2024 20% 10/14/2025 20% 10/14/2026 20% PERMA-F

PERMA-FIXENVIRONMENTAL SERVICES, INC 2017 STOCK OPTION PLAN INCENTIVE STOCK OPTION AGREEMENT

Exhibit 99.1 ISO No. PERMA-FIXENVIRONMENTAL SERVICES, INC 2017 STOCK OPTION PLAN INCENTIVE STOCK OPTION AGREEMENT Participant Name: Mark Duff Grant Date: October 14, 2021 Vesting Schedule Percent Shares Subject to Options: 50,000 Exercise Dates Exercisable Expiration Date: October 14, 2021 10/14/2022 20% Exercise Price: $7.005 10/14/2023 20% 10/14/2024 20% 10/14/2025 20% 10/14/2026 20% PERMA-FIX E

PERMA-FIXENVIRONMENTAL SERVICES, INC 2017 STOCK OPTION PLAN INCENTIVE STOCK OPTION AGREEMENT

Exhibit 99.3 ISO No. PERMA-FIXENVIRONMENTAL SERVICES, INC 2017 STOCK OPTION PLAN INCENTIVE STOCK OPTION AGREEMENT Participant Name: Louis Centofanti Grant Date: October 14, 2021 Vesting Schedule Shares Subject to Options: 20,000 Exercise Dates Percent Exercisable Expiration Date: October 14, 2021 10/14/2022 20% Exercise Price: $7.005 10/14/2023 20% 10/14/2024 20% 10/14/2025 20% 10/14/2026 20% PERM

PERMA-FIXENVIRONMENTAL SERVICES, INC 2017 STOCK OPTION PLAN INCENTIVE STOCK OPTION AGREEMENT

Exhibit 99.5 ISO No. PERMA-FIXENVIRONMENTAL SERVICES, INC 2017 STOCK OPTION PLAN INCENTIVE STOCK OPTION AGREEMENT Participant Name: Andy Lombardo Grant Date: October 14, 2021 Shares Subject to Options: 25,000 Vesting Schedule Expiration Date: October 14, 2021 Exercise Price: $7.005 Exercise Dates Percent Exercisable 10/14/2022 20% 10/14/2023 20% 10/14/2024 20% 10/14/2025 20% 10/14/2026 20% PERMA-F

PERMA-FIXENVIRONMENTAL SERVICES, INC 2017 STOCK OPTION PLAN INCENTIVE STOCK OPTION AGREEMENT

Exhibit 99.4 ISO No. PERMA-FIXENVIRONMENTAL SERVICES, INC 2017 STOCK OPTION PLAN INCENTIVE STOCK OPTION AGREEMENT Participant Name: Richard Grondin Grant Date: October 14, 2021 Shares Subject to Options: 25,000 Vesting Schedule Expiration Date: October 14, 2021 Exercise Price: $7.005 Exercise Dates Percent Exercisable 10/14/2022 20% 10/14/2023 20% 10/14/2024 20% 10/14/2025 20% 10/14/2026 20% PERMA

Perma-Fix Closes $6.2 Million Public Offering

EX-99.1 5 ex99-1.htm Exhibit 99.1 Perma-Fix Closes $6.2 Million Public Offering ATLANTA – October 4, 2021. Perma-Fix Environmental Services, Inc. (NASDAQ: PESI) (the “Company”) today announced it has closed an underwritten public offering of 1,000,000 shares of its common stock, at $6.20 per share. The gross proceeds to the Company from this offering were approximately $6.2 million, before deducti

Form of Subscription Agreement, dated as of September 30, 2021, between the Company and each purchase named in the signature pages of the respective Subscription Agreements, as incorporated by reference from Exhibit 10.2 to the Company’s Form 8-K filed on October 4, 2021.

Exhibit 10.2 SUBSCRIPTION AGREEMENT This Subscription Agreement (this ?Agreement?) is dated as of September 30, 2021 (the ?Effective Date?), between Perma-Fix Environmental Services, Inc., a Delaware corporation (the ?Company?), and the purchaser identified on the signature page hereto (including its successors and assigns, the ?Purchaser?). WHEREAS, subject to the terms and conditions set forth i

Placement Agency Agreement, dated as of September 23, 2021, by and between the Company and Wellington Shields & Co., LLC., as incorporated by reference from Exhibit 10.1 to the Company’s Form 8-K filed on October 4, 2021.

EX-10.1 3 ex10-1.htm Exhibit 10.1 PLACEMENT AGENCY AGREEMENT September 23, 2021 Wellington Shields & Co LLC 140 Broadway Suite 4400 New York NY 10005 Ladies and Gentlemen: Perma-Fix Environmental Services, Inc., a Delaware corporation (the “Company”), proposes, subject to the terms and conditions stated herein, to issue and sell, through Wellington Shields & Co LLC (“Wellington”), up to 1,000,000

Regulation FD Disclosure, Entry into a Material Definitive Agreement, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) September 30, 2021 PERMA-FIX ENVIRONMENTAL SERVICES, INC. (Exact name of registrant as specified in its charter) Delaware 1-11596 58-1954497 (State or other jurisdiction (Commission (I

PERMA-FIX ENVIRONMENTAL SERVICES, INC. 1,000,000 Shares of Common Stock

424B5 1 form424b5.htm Filed pursuant to Rule 424(b)(5) Registration No. 333-231429 PROSPECTUS SUPPLEMENT (To Prospectus dated May 22, 2019) PERMA-FIX ENVIRONMENTAL SERVICES, INC. 1,000,000 Shares of Common Stock We are offering and selling to investors 1,000,000 shares of our common stock, par value $0.001 per share (“Common Stock”), pursuant to this prospectus supplement and accompanying base pro

Perma-Fix Awarded Approximately $50 Million in New Contracts in Q3 2021

EX-99.1 2 ex99-1.htm Exhibit 99.1 Perma-Fix Awarded Approximately $50 Million in New Contracts in Q3 2021 ATLANTA – On September 20, 2021 Perma-Fix Environmental Services, Inc. (NASDAQ: PESI) (the “Company”) today announced that it has been awarded a total of approximately $50 million in contract awards during the third quarter of 2021, to be recognized over the next 18 to 24 months. Mark Duff, Ch

Entry into a Material Definitive Agreement, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported) September 16, 2021 PERMA-FIX ENVIRONMENTAL SERVICES, INC. (Exact name of registrant as specified in its charter) Delaware 001-11596 58-1954497 (State or other jurisdiction of incorpora

PESI / Perma-Fix Environmental Services, Inc. / HEARTLAND ADVISORS INC - AMENDMENT NO. 5 TO SCHEDULE 13D Activist Investment

SC 13D/A 1 heartlandpesi13d.htm AMENDMENT NO. 5 TO SCHEDULE 13D UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 5) Perma-Fix Environmental Services, Inc. (Name of Issuer) Common Stock, $0.001 Par Value (Title of Class of Securities) 714157203 (CUSIP Number) Vinita K. Paul Vice President, Chief Compliance

Second Amendment to Second Amended and Restated Revolving Credit, Term Loan and Security Agreement between Perma-Fix Environmental Services, Inc. and PNC Bank, National Association (as Lender and as Agent), dated August 10, 2021.

Exhibit 4.3 SECOND AMENDMENT TO SECOND AMENDED AND RESTATED REVOLVING CREDIT, TERM LOAN AND SECURITY AGREEMENT AND WAIVER THIS SECOND AMENDMENT TO SECOND AMENDED AND RESTATED REVOLVING CREDIT, TERM LOAN AND SECURITY AGREEMENT AND WAIVER, dated as of August 10, 2021 (this “Amendment”), relating to the Credit Agreement referenced below, is by and among PERMA-FIX ENVIRONMENTAL SERVICES, INC., a Delaw

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 Form 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 Form 10-Q ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2021 Or ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 001-11596 PERMA-FIX ENVIRONMENTAL S

Results of Operations and Financial Condition, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported) August 11, 2021 PERMA-FIX ENVIRONMENTAL SERVICES, INC. (Exact name of registrant as specified in its charter) Delaware . 001-11596 58-1954497 (State or other jurisdiction of incorporat

Perma-Fix Schedules Second Quarter 2021 Conference Call

EX-99.1 2 ex99-1.htm Exhibit 99.1 Perma-Fix Schedules Second Quarter 2021 Conference Call ATLANTA – August 06, 2021 — Perma-Fix Environmental Services, Inc. (NASDAQ: PESI), a nuclear services company, today announced it will host a conference call at 11:00 a.m. Eastern Time on Wednesday, August 11, 2021. A webcast of the call may be accessed at https://www.webcaster4.com/Webcast/Page/2243/42456 or

Perma-Fix Reports Financial Results and Provides Business Update for the Second Quarter of 2021

EX-99.2 3 ex99-2.htm Exhibit 99.2 Perma-Fix Reports Financial Results and Provides Business Update for the Second Quarter of 2021 ATLANTA – August 11, 2021 – Perma-Fix Environmental Services, Inc. (NASDAQ: PESI) (the “Company”) today announced financial results and provided a business update for the second quarter ended June 30, 2021. Mark Duff, President and CEO of the Company, commented, “As ant

Submission of Matters to a Vote of Security Holders, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported) July 20, 2021 PERMA-FIX ENVIRONMENTAL SERVICES, INC. (Exact name of registrant as specified in its charter) Delaware 1-11596 58-1954497 (State or other jurisdiction of incorporation) (

Entry into a Material Definitive Agreement, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported) July 1, 2021 PERMA-FIX ENVIRONMENTAL SERVICES, INC. (Exact name of registrant as specified in its charter) Delaware 1-11596 58-1954497 (State or other jurisdiction of incorporation) (C

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

DEFA14A 1 formdefa14a.htm UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant [X] Filed by a Party other than the Registrant [ ] Check the appropriate box: [ ] Preliminary Proxy Statement [ ] Confidential, for Use of the Commission Only (as permitted by Rule 14a

Fifth Amendment to 2003 Outside Directors Stock Plan, as incorporated by reference from Exhibit A to the Company’s Proxy Statement for its 2021 Annual Meeting of Stockholders filed on June 10, 2021.

DEF 14A 1 formdef14a.htm UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant [X] Filed by a Party other than the Registrant [ ] Check the appropriate box: [ ] Preliminary Proxy Statement [ ] Confidential, for Use of the Commission Only (as permitted by Rule 14a-

Perma-Fix Schedules First Quarter 2021 Conference Call

EX-99.1 2 ex99-1.htm Exhibit 99.1 Perma-Fix Schedules First Quarter 2021 Conference Call ATLANTA – May 4, 2021 — Perma-Fix Environmental Services, Inc. (NASDAQ: PESI), a nuclear services company, today announced it will host a conference call at 11:00 a.m. Eastern Time on Thursday, May 6, 2021. A webcast of the call may be accessed at https://www.webcaster4.com/Webcast/Page/2243/41236 or on the Co

Quarterly Report -

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 Form 10-Q [X] QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2021 Or [ ] TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 111596 PERMA-FIX ENVIRONMENTAL

Restated Certificate of Incorporation, as amended, of Perma-Fix Environmental Services, Inc., as incorporated by reference from Exhibit 3(i) to the Company’s Form 10-Q for Quarter ended March 31, 2021filed on May 6, 2021.

Exhibit 3(i) CERTIFICATE OF INCORPORATION OF NATIONAL ENVIRONMENTAL INDUSTRIES, LTD.

Results of Operations and Financial Condition, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported) May 6, 2021 PERMA-FIX ENVIRONMENTAL SERVICES, INC. (Exact name of registrant as specified in its charter) Delaware . 1-11596 . 58-1954497 (State or other jurisdiction of incorporation)

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported) May 4, 2021 PERMA-FIX ENVIRONMENTAL SERVICES, INC. (Exact name of registrant as specified in its charter) Delaware . 1-11596 . 58-1954497 (State or other jurisdiction of incorporation)

Perma-Fix Reports Financial Results for the First Quarter of 2021

Exhibit 99.2 Perma-Fix Reports Financial Results for the First Quarter of 2021 ATLANTA ? May 6, 2021 ? Perma-Fix Environmental Services, Inc. (NASDAQ: PESI) (the ?Company?) today announced financial results and provided a business update for the first quarter ended March 31, 2021. Mark Duff, President and CEO of the Company, commented, ?As anticipated, we experienced weakness in our Treatment Segm

First Amendment to Second Amended and Restated Revolving Credit, Term Loan and Security Agreement between Perma-Fix Environmental Services, Inc. and PNC Bank, National Association (as Lender and as Agent), dated May 4, 2021, as incorporated by reference from Exhibit 4.1 to the Company’s Form 10-Q for the quarter ended March 31, 2021 filed on May 6, 2021.

Exhibit 4.1 FIRST AMENDMENT TO SECOND AMENDED AND RESTATED REVOLVING CREDIT, TERM LOAN AND SECURITY AGREEMENT THIS FIRST AMENDMENT TO SECOND AMENDED AND RESTATED REVOLVING CREDIT, TERM LOAN AND SECURITY AGREEMENT, dated as of May 4, 2021 (this ?Amendment?), relating to the Credit Agreement referenced below, is by and among PERMA-FIX ENVIRONMENTAL SERVICES, INC., a Delaware corporation (the ?Borrow

Material Modification to Rights of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported) April 15, 2021 PERMA-FIX ENVIRONMENTAL SERVICES, INC. (Exact name of registrant as specified in its charter) Delaware 1-11596 58-1954497 (State or other jurisdiction of incorporation)

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As Filed with the Securities and Exchange Commission on March 31, 2021 Registration No.

Perma-Fix Reports 44% Increase in Revenue for 2020

EX-99.2 3 ex99-2.htm Exhibit 99.2 Perma-Fix Reports 44% Increase in Revenue for 2020 ATLANTA – March 29, 2021 – Perma-Fix Environmental Services, Inc. (NASDAQ: PESI) (the “Company”) today announced results for the fourth quarter and full year ended December 31, 2020. 2020 Financial Highlights: ● Revenue for 2020 increased 43.5% to $105.4 million versus $73.5 million for the same period last year ●

Time and Material Master Task Ordering Agreement Subcontract Form of Agreement (subcontract 554628) dated August 21, 2019 and Modification 6 between Perma-Fix Environmental Services, Inc. and Triad National Security, LLC., as incorporated by reference from Exhibit 10.35 to the Company’s Form 10-K filed on March 29, 2021. CERTAIN INFORMATION OF THIS EXHIBIT WITHIN “EXHIBIT C” – “FORM A-1 SCHEDULE OF RATES AND NOT-TO-EXCEED AMOUNTS” HAS BEEN EXCLUDED FROM THE EXHIBIT BECAUSE IT IS NOT MATERIAL AND WOULD LIKELY CAUSE COMPETITIVE HARM TO THE COMPANY IF PUBICLY DISCLOSED.

EX-10.35 3 ex10-35.htm Exhibit 10.35 T&M SFA (Rev. 6.0, 11/1/18) Dated 8/21/19 Subcontract Form of Agreement Time-and-Material Master Task Ordering Agreement (MTOA) Subcontract Form of Agreement * Subcontractor: PermaFix Environmental Services Subcontract No.: 554628 Address: 1093 Commerce Park Drive, Ste. 300 Oak Ridge, TN 37830 Contact: Jessica Cerrese Telephone: (865) 342-7649 E-mail: jcarrese@

Perma-Fix Schedules Fourth Quarter and Fiscal 2020 Earnings Call

EX-99.1 2 ex99-1.htm Exhibit 99.1 Perma-Fix Schedules Fourth Quarter and Fiscal 2020 Earnings Call ATLANTA – March 24, 2021 — Perma-Fix Environmental Services, Inc. (NASDAQ: PESI), a nuclear services company, today announced it will host a conference call at 1:00 p.m. Eastern Time on Monday, March 29, 2021. A webcast of the call may be accessed at https://www.webcaster4.com/Webcast/Page/2243/40535

Annual Report -

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K [X] ANNUAL REPORT PURSUANT TO SECTION 13 OR 15 (d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2020 or [ ] TRANSITION REPORT PURSUANT TO SECTION 13 OR 15 (d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 1-11596 PERMA-FIX ENVIRONMENTAL S

Results of Operations and Financial Condition, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported) March 29, 2021 PERMA-FIX ENVIRONMENTAL SERVICES, INC. (Exact name of registrant as specified in its charter) Delaware 1-11596 . 58-1954497 (State or other jurisdiction of incorporation

Time and Material Master Task Ordering Agreement Subcontract Form of Agreement (subcontract 573512) dated February 23, 2020 and Modification 4 between Perma-Fix Environmental Services, Inc. and Triad National Security, LLC., as incorporated by reference from Exhibit 10.34 to the Company Form 10-K filed on March 29, 2021. CERTAIN INFORMATION OF THIS EXHIBIT WITHIN “EXHIBIT C” – “Form A-1 SCHEDULE OF RATES AND NOT-TO-EXCEED AMOUNTS” HAS BEEN EXCLUDED FROM THE EXHIBIT BECAUSE IT IS NOT MATERIAL AND WOULD LIKELY CAUSE COMPETITIVE HARM TO THE COMPANY IF PUBICLY DISCLOSED.

Exhibit 10.34 T&M SFA (Rev. 6.0, 11/1/18) Subcontract Form of Agreement Dated 02/23/2020 Time-and-Material Master Task Ordering Agreement (MTOA) Subcontract Form of Agreement * Subcontractor: Perma-Fix Environmental Services, Inc. Subcontract No.: 573512 Address: 1093 Commerce Park Drive, Ste. 300 Oak Ridge, TN 37830 Contact: Tracey Spencer, Contract Administration Manager Telephone: (865) 690-050

List of Subsidiaries

EXHIBIT 21.1 LIST OF SUBSIDIARIES OF PERMA-FIX ENVIRONMENTAL SERVICES, INC. (THE ?COMPANY?) Treatment Perma-Fix of Florida, Inc. (?PFF?), a Florida Corporation, is a 100% owned subsidiary of the Company. Diversified Scientific Services, Inc., (?DSSI?) a Tennessee Corporation, is a 100% owned subsidiary of the Company. East Tennessee Materials and Energy Corporation, (?M&EC?) a Tennessee Corporatio

Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year, Entry into a Material Definitive Agreement, Material Modification to Rights of Security Holders, Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Other Events, Financial Statements and Exhibits -

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported) January 21, 2021 PERMA-FIX ENVIRONMENTAL SERVICES, INC. (Exact name of registrant as specified in its charter) Delaware 1-11596 58-1954497 (State or other jurisdiction of incorporation

EXECUTIVE VICE PRESIDENT OF NUCLEAR & TECHNICAL SERVICES Effective: January 1, 2021

EX-99.4 6 ex99-4.htm Exhibit 99.4 EXECUTIVE VICE PRESIDENT OF NUCLEAR & TECHNICAL SERVICES Effective: January 1, 2021 EVP of Nuclear & Technical Services 2021 MIP EXECUTIVE VICE PRESIDENT OF NUCLEAR & TECHNICAL SERVICES PURPOSE: To define the compensation plan for the EXECUTIVE VICE PRESIDENT (“EVP”) OF NUCLEAR & TECHNICAL SERVICES. SCOPE: Perma-Fix Environmental Services, Inc. POLICY: The Compens

CHIEF EXECUTIVE OFFICER AND PRESIDENT Effective: January 1, 2021

EX-99.1 3 ex99-1.htm Exhibit 99.1 CHIEF EXECUTIVE OFFICER AND PRESIDENT Effective: January 1, 2021 CEO 2021 MIP CHIEF EXECUTIVE OFFICER AND PRESIDENT PURPOSE: To define the compensation plan for the Chief Executive Officer (“CEO”) and President. SCOPE: Perma-Fix Environmental Services, Inc. POLICY: The Compensation Plan is designed to retain, motivate and reward the incumbent to support and achiev

EXECUTIVE VICE PRESIDENT OF STRATEGIC INITIATIVES Effective: January 1, 2021

Exhibit 99.3 EXECUTIVE VICE PRESIDENT OF STRATEGIC INITIATIVES Effective: January 1, 2021 EVP OF STRATEGIC INITIATVES 2021 MIP EVP OF STRATEGIC INITIATIVES PURPOSE: To define the compensation plan for the Executive Vice President of Strategic Initiatives (“EVP of Strategic Initiatives”). SCOPE: Perma-Fix Environmental Services, Inc. POLICY: The Compensation Plan is designed to retain, motivate and

Second Amended and Restated Bylaws, as amended effective January 21, 2021, of Perma-Fix Environmental Services, Inc., as incorporated by reference from Exhibit 3(ii) to the Company’s 8-K filed on January 26, 2021.

EX-3 2 ex3ii.htm Exhibit 3(ii) SECOND AMENDED AND RESTATED BYLAWS OF PERMA-FIX ENVIRONMENTAL SERVICES, INC. (a Delaware corporation) Adopted on, and effective as of, March 29, 2012 As Amended By: Amendment to Amended and Restated Bylaws, adopted October 4, 2013 Second Amendment to Amended and Restated Bylaws, adopted July 28, 2016 Third Amendment to Amended and Restated Bylaws, adopted January 21,

EXECUTIVE VICE PRESIDENT OF WASTE TREATMENT OPERATIONS Effective: January 1, 2021

EX-99.5 7 ex99-5.htm Exhibit 99.5 EXECUTIVE VICE PRESIDENT OF WASTE TREATMENT OPERATIONS Effective: January 1, 2021 EVP of Waste Treatment Operations 2021 MIP EXECUTIVE VICE PRESIDENT OF WASTE TREATMENT OPERATIONS PURPOSE: To define the compensation plan for the EXECUTIVE VICE PRESIDENT (“EVP”) OF WASTE TREATMENT OPERATIONS. SCOPE: Perma-Fix Environmental Services, Inc. POLICY: The Compensation Pl

EXECUTIVE VICE PRESIDENT AND CHIEF FINANCIAL OFFICER Effective: January 1, 2021

Exhibit 99.2 EXECUTIVE VICE PRESIDENT AND CHIEF FINANCIAL OFFICER Effective: January 1, 2021 CFO 2021 MIP EXECUTIVE VICE PRESIDENT AND CHIEF FINANCIAL OFFICER PURPOSE: To define the compensation plan for the Chief Financial Officer (“CFO”). SCOPE: Perma-Fix Environmental Services, Inc. POLICY: The Compensation Plan is designed to retain, motivate and reward the incumbent to support and achieve the

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 4) Perma-Fix Environmental Services, Inc. (Name of Issuer) Common Stock, $0.001 Par Value (Title of Class of

SCHEDULE 13D UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 4) Perma-Fix Environmental Services, Inc. (Name of Issuer) Common Stock, $0.001 Par Value (Title of Class of Securities) 714157203 (CUSIP Number) Vinita K. Paul Vice President, Chief Compliance Officer, General Counsel and Secretary Heartland Ad

Quarterly Report -

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 Form 10-Q [X] QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2020 Or [ ] TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 111596 PERMA-FIX ENVIRONME

Results of Operations and Financial Condition, Financial Statements and Exhibits -

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported) November 5, 2020 PERMA-FIX ENVIRONMENTAL SERVICES, INC. (Exact name of registrant as specified in its charter) Delaware . 1-11596 . 58-1954497 (State or other jurisdiction of incorpora

Perma-Fix Reports 34% Increase in Revenue to $30.2 Million and $1.4 Million of Net Income Attributable to Common Stockholders for the Third Quarter of 2020

Exhibit 99.2 Perma-Fix Reports 34% Increase in Revenue to $30.2 Million and $1.4 Million of Net Income Attributable to Common Stockholders for the Third Quarter of 2020 ATLANTA – November 5, 2020 – Perma-Fix Environmental Services, Inc. (“Perma-Fix” or the “Company”) (NASDAQ: PESI) today announced results for the third quarter and nine months ended September 30, 2020. Third Quarter 2020 Financial

Perma-Fix Schedules Third Quarter 2020 Conference Call

Exhibit 99.1 Perma-Fix Schedules Third Quarter 2020 Conference Call ATLANTA – October 30, 2020 — Perma-Fix Environmental Services, Inc. (NASDAQ: PESI), a nuclear services company, today announced that it will host a conference call at 11:00 a.m. Eastern Time on Thursday, November 5, 2020. The call will be available on the Company’s website at www.perma-fix.com, or by calling 844-407-9500 for U.S.

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported) August 10, 2020 PERMA-FIX ENVIRONMENTAL SERVICES, INC. (Exact name of registrant as specified in its charter) Delaware 1-11596 58-1954497 (State or other jurisdiction of incorporation)

Quarterly Report -

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 Form 10-Q [X] QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2020 Or [ ] TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 111596 PERMA-FIX ENVIRONMENTAL

Perma-Fix Schedules Second Quarter 2020 Conference Call

Exhibit 99.1 Perma-Fix Schedules Second Quarter 2020 Conference Call ATLANTA – August 4, 2020 — Perma-Fix Environmental Services, Inc. (NASDAQ: PESI), a nuclear services company, today announced that it will host a conference call at 11:00 a.m. Eastern Time on Friday, August 7, 2020. The call will be available on the Company’s website at www.perma-fix.com, or by calling 877-407-0778 for U.S. calle

Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported) August 7, 2020 PERMA-FIX ENVIRONMENTAL SERVICES, INC. (Exact name of registrant as specified in its charter) Delaware . 1-11596 . 58-1954497 (State or other jurisdiction of incorporati

Perma-Fix Reports 28.7% Revenue Growth and Positive Net Income for the Second Quarter of 2020 Services Segment Revenue Doubles to $14.2 Million

Exhibit 99.2 Perma-Fix Reports 28.7% Revenue Growth and Positive Net Income for the Second Quarter of 2020 Services Segment Revenue Doubles to $14.2 Million ATLANTA – August 7, 2020 – Perma-Fix Environmental Services, Inc. (NASDAQ: PESI) (the “Company”) today announced financial results and provided a business update for the second quarter ended June 30, 2020. Second quarter 2020 financial highlig

EMPLOYMENT AGREEMENT

Exhibit 99.3 EMPLOYMENT AGREEMENT THIS EMPLOYMENT AGREEMENT (“Agreement”) is made and entered into as of the 22nd day of July, 2020, by and between PERMA-FIX ENVIRONMENTAL SERVICES, INC., a Delaware corporation (the “Company”), and Ben Naccarato (the “Executive”). W I T N E S S E T H: WHEREAS, the Company believes that the services, knowledge, and contributions of the Executive to the Company are

EMPLOYMENT AGREEMENT

Exhibit 99.1 EMPLOYMENT AGREEMENT THIS EMPLOYMENT AGREEMENT (“Agreement”) is made and entered into as of the 22nd day of July, 2020, by and between PERMA-FIX ENVIRONMENTAL SERVICES, INC., a Delaware corporation (the “Company”), and Mark Duff (the “Executive”). W I T N E S S E T H: WHEREAS, the Company believes that the services, knowledge, and contributions of the Executive to the Company are of c

EMPLOYMENT AGREEMENT

Exhibit 99.2 EMPLOYMENT AGREEMENT THIS EMPLOYMENT AGREEMENT (“Agreement”) is made and entered into as of the 22nd day of July, 2020, by and between PERMA-FIX ENVIRONMENTAL SERVICES, INC., a Delaware corporation (the “Company”), and Louis F. Centofanti (the “Executive”). W I T N E S S E T H: WHEREAS, the Company believes that the services, knowledge, and contributions of the Executive to the Compan

PERMA-FIXENVIRONMENTAL SERVICES, INC 2017 STOCK OPTION PLAN INCENTIVE STOCK OPTION AGREEMENT

Exhibit 99.12 ISO No. PERMA-FIXENVIRONMENTAL SERVICES, INC 2017 STOCK OPTION PLAN INCENTIVE STOCK OPTION AGREEMENT Participant Name: Richard Grondin Grant Date: January 17, 2019 Shares Subject to Options: 10,000 Vesting Schedule Expiration Date: January 17, 2025 Exercise Price: $3.15 Exercise Dates Percent Exercisable 1/17 20% per year PERMA-FIX ENVIRONMENTAL SERVICES, INC. 2017 STOCK OPTION PLAN

EXECUTIVE VICE PRESIDENT OF WASTE TREATMENT OPERATIONS Effective: January 1, 2020

Exhibit 99.6 EXECUTIVE VICE PRESIDENT OF WASTE TREATMENT OPERATIONS Effective: January 1, 2020 EVP of Waste Treatment Operations 2020 MIP EXECUTIVE VICE PRESIDENT OF WASTE TREATMENT OPERATIONS PURPOSE: To define the compensation plan for the EXECUTIVE VICE PRESIDENT (“EVP”) OF WASTE TREATMENT OPERATIONS. SCOPE: Perma-Fix Environmental Services, Inc. POLICY: The Compensation Plan is designed to ret

EMPLOYMENT AGREEMENT

Exhibit 99.5 EMPLOYMENT AGREEMENT THIS EMPLOYMENT AGREEMENT (“Agreement”) is made and entered into as of the 22nd day of July, 2020, by and between PERMA-FIX ENVIRONMENTAL SERVICES, INC., a Delaware corporation (the “Company”), and Richard Grondin (the “Executive”). W I T N E S S E T H: WHEREAS, the Company believes that the services, knowledge, and contributions of the Executive to the Company ar

PERMA-FIXENVIRONMENTAL SERVICES, INC 2017 STOCK OPTION PLAN INCENTIVE STOCK OPTION AGREEMENT

EX-99.11 8 ex99-11.htm Exhibit 99.11 ISO No. PERMA-FIXENVIRONMENTAL SERVICES, INC 2017 STOCK OPTION PLAN INCENTIVE STOCK OPTION AGREEMENT Participant Name: Richard Grondin Grant Date: October 19, 2017 Shares Subject to Options: 20,000 Vesting Schedule Expiration Date: October 19, 2023 Exercise Price: $3.60 Exercise Dates Percent Exercisable 10/19/2018 20% 10/19/2019 20% 10/19/2020 20% 10/19/2021 2

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Submission of Matters to a Vote of Security Holders, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported) July 22, 2020 PERMA-FIX ENVIRONMENTAL SERVICES, INC. (Exact name of registrant as specified in its charter) Delaware . 1-11596 . 58-1954497 (State or other jurisdiction of incorporatio

EMPLOYMENT AGREEMENT

Exhibit 99.4 EMPLOYMENT AGREEMENT THIS EMPLOYMENT AGREEMENT (“Agreement”) is made and entered into as of the 22nd day of July, 2020, by and between PERMA-FIX ENVIRONMENTAL SERVICES, INC., a Delaware corporation (the “Company”), and Andrew Lombardo (the “Executive”). W I T N E S S E T H: WHEREAS, the Company believes that the services, knowledge, and contributions of the Executive to the Company ar

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UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant [X] Filed by a Party other than the Registrant [ ] Check the appropriate box: [ ] Preliminary Proxy Statement [ ] Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))

First Amendment to 2017 Stock Option Plan, as incorporated by reference from Appendix “A” to the Company’s Proxy Statement for its 2020 Annual Meeting of Stockholders filed on June 12, 2020.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant [X] Filed by a Party other than the Registrant [ ] Check the appropriate box: [ ] Preliminary Proxy Statement [ ] Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))

Results of Operations and Financial Condition, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported) May 12, 2020 PERMA-FIX ENVIRONMENTAL SERVICES, INC. (Exact name of registrant as specified in its charter) Delaware 1-11596 58-1954497 (State or other jurisdiction of incorporation) (C

Quarterly Report -

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 Form 10-Q [X] QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2020 Or [ ] TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 111596 PERMA-FIX ENVIRONMENTAL

Perma-Fix Reports 112% Increase in Revenue to $24.9 Million for the First Quarter of 2020; Achieves $1.2 Million of Net Income Service Segment Revenue Increases Eight-Fold to $15.3 Million

Exhibit 99.2 Perma-Fix Reports 112% Increase in Revenue to $24.9 Million for the First Quarter of 2020; Achieves $1.2 Million of Net Income Service Segment Revenue Increases Eight-Fold to $15.3 Million ATLANTA – May 12, 2020 – Perma-Fix Environmental Services, Inc. (NASDAQ: PESI) (the “Company”) today announced financial results and provided a business update for the first quarter ended March 31,

Perma-Fix Schedules First Quarter 2020 Conference Call

Exhibit 99.1 Perma-Fix Schedules First Quarter 2020 Conference Call ATLANTA – May 8, 2019 — Perma-Fix Environmental Services, Inc. (NASDAQ: PESI), a nuclear services company, today announced that it will host a conference call at 11:00 a.m. Eastern Time on Tuesday, May 12, 2020. The call will be available on the Company’s website at www.perma-fix.com, or by calling 844-407-9500 for U.S. callers, o

Second Amended and Restated Revolving Credit, Term Loan and Security Agreement between Perma-Fix Environmental Services, Inc. and PNC Bank, National Association (as Lender and as Agent), dated May 8, 2020, as incorporated by reference from Exhibit 4.1 to the Company’s Form 10-Q for the Quarter ended March 31, 2020 filed on May 12, 2020.

Exhibit 4.1 SECOND AMENDED AND RESTATED REVOLVING CREDIT, TERM LOAN AND SECURITY AGREEMENT PNC BANK, NATIONAL ASSOCIATION (AS LENDER AND AS AGENT) WITH PERMA-FIX ENVIRONMENTAL SERVICES, INC. (BORROWER) MAY 8, 2020 TABLE OF CONTENTS ARTICLE I DEFINITIONS 1 1.1. Accounting Terms. 1 1.2. General Terms. 28 1.3. Uniform Commercial Code Terms. 28 1.4. Certain Matters of Construction. 29 1.5. Eurodollar

Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported) April 16, 2020 PERMA-FIX ENVIRONMENTAL SERVICES, INC. (Exact name of registrant as specified in its charter) Delaware . 1-11596 . 58-1954497 (State or other jurisdiction of incorporati

Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant, Entry into a Material Definitive Agreement, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported) April 14, 2020 PERMA-FIX ENVIRONMENTAL SERVICES, INC. (Exact name of registrant as specified in its charter) Delaware . 1-11596 58-1954497 (State or other jurisdiction of incorporation

Payment Protection Program Term Note dated April 11, 2020, by and between Perma-Fix Environmental Services, Inc. and PNC Bank, National Association, as incorporated by reference from Exhibit 99.1 to the Company’s Form 8-K filed on April 15, 2020.

EX-99.1 2 ex99-1.htm Exhibit 99.1

Financial Statements and Exhibits, Entry into a Material Definitive Agreement

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported) March 27, 2020 PERMA-FIX ENVIRONMENTAL SERVICES, INC. (Exact name of registrant as specified in its charter) Delaware . 1-11596 . 58-1954497 (State or other jurisdiction of incorporati

SECOND AMENDMENT 2017 STOCK OPTION PLAN NONQUALIFIED STOCK OPTION AGREEMENT DATED JULY 27, 2017, BY AND BETWEEN PERMA-FIX ENVIRNOMENTAL SERVICES, INC. AND ROBERT FERGUSON (“PARTICIPANT”) (“2017 NONQUALIFED STOCK OPTION AGREEMENT”)

SECOND AMENDMENT to 2017 STOCK OPTION PLAN NONQUALIFIED STOCK OPTION AGREEMENT DATED JULY 27, 2017, BY AND BETWEEN PERMA-FIX ENVIRNOMENTAL SERVICES, INC.

PESI / Perma-Fix Environmental Services, Inc. 8-A12B/A - -

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-A/A (Amendment No. 1) FOR REGISTRATION OF CERTAIN CLASSES OF SECURITIES PURSUANT TO SECTION 12(b) OR 12(g) OF THE SECURITIES EXCHANGE ACT OF 1934 PERMA-FIX ENVIRONMENTAL SERVICES, INC. (Exact name of registrant as specified in its charter) Delaware 58-1954497 (State or other jurisdiction of incorporation) (IRS Employer

Thirteenth Amendment to Amended and Restated Revolving Credit, Term Loan and Security Agreement between PNC Bank, National Association and Perma-Fix Environmental Services, Inc., dated December 13, 2019.

Exhibit 4.17 THIRTEENTH AMENDMENT TO AMENDED AND RESTATED REVOLVING CREDIT, TERM LOAN AND SECURITY AGREEMENT THIS THIRTEENTH AMENDMENT TO AMENDED AND RESTATED REVOLVING CREDIT, TERM LOAN AND SECURITY AGREEMENT, dated as of December 13, 2019 (this “Amendment”), relating to the Credit Agreement referenced below, is by and among PERMA-FIX ENVIRONMENTAL SERVICES, INC., a Delaware corporation (the “Bor

2003 Outside Directors’ Stock Plan of the Company, as incorporated by reference from Exhibit 10.1 to the Company’s 2019 Form 10-K filed on March 20, 2020.

Exhibit 10.1 EXHIBIT A PERMA-FIX ENVIRONMENTAL SERVICES, INC. 2003 OUTSIDE DIRECTORS STOCK PLAN ARTICLE I DEFINITIONS 1.1 Definitions. As used herein, the following terms have the meanings hereinafter set forth unless the context clearly indicates to the contrary: 1.1.1 “Board” shall mean the Board of Directors of the Company. 1.1.2 “Company” shall mean Perma-Fix Environmental Services, Inc. 1.1.3

List of Subsidiaries

EXHIBIT 21.1 LIST OF SUBSIDIARIES OF PERMA-FIX ENVIRONMENTAL SERVICES, INC. (THE “COMPANY”) Treatment Perma-Fix of Florida, Inc. (“PFF”), a Florida Corporation, is a 100% owned subsidiary of the Company. Diversified Scientific Services, Inc., (“DSSI”) a Tennessee Corporation, is a 100% owned subsidiary of the Company. East Tennessee Materials and Energy Corporation, (“M&EC”) a Tennessee Corporatio

Sixth Amendment to Amended and Restated Revolving Credit, Term Loan and Security Agreement between PNC Bank, National Association and Perma-Fix Environmental Services, Inc., dated July 28, 2014.

Exhibit 4.10 SIXTH AMENDMENT TO AMENDED AND RESTATED REVOLVING CREDIT, TERM LOAN AND SECURITY AGREEMENT THIS SIXTH AMENDMENT TO AMENDED AND RESTATED REVOLVING CREDIT, TERM LOAN AND SECURITY AGREEMENT, dated as of 28, 2014 (this “Amendment”), relating to the Credit Agreement referenced below, is by and among PERMA-FIX ENVIRONMENTAL SERVICES, INC., a Delaware corporation (the “Borrower”), the lender

PESI / Perma-Fix Environmental Services, Inc. 10-K - Annual Report -

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K [X] ANNUAL REPORT PURSUANT TO SECTION 13 OR 15 (d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2019 or [ ] TRANSITION REPORT PURSUANT TO SECTION 13 OR 15 (d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 1-11596 PERMA-FIX ENVIRONMENTAL S

Fourth Amendment to Amended and Restated Revolving Credit, Term Loan and Security Agreement and Waiver between PNC Bank, National Association and Perma-Fix Environmental Services, Inc., dated April 14, 2014.

Exhibit 4.8 FOURTH AMENDMENT TO AMENDED AND RESTATED REVOLVING CREDIT, TERM LOAN AND SECURITY AGREEMENT AND WAIVER THIS FOURTH AMENDMENT TO AMENDED AND RESTATED REVOLVING CREDIT, TERM LOAN AND SECURITY AGREEMENT AND WAIVER, dated as of April 14, 2014 (this “Amendment”), relating to the Credit Agreement referenced below, is by and among PERMA-FIX ENVIRONMENTAL SERVICES, INC., a Delaware corporation

First Amendment to 2003 Outside Directors Stock Plan, as incorporated by reference from Exhibit 10.2 to the Company’s 2019 Form 10-K filed on March 20, 2020.

Exhibit 10.2 APPENDIX “A” FIRST AMENDMENT to 2003 OUTSIDE DIRECTORS STOCK PLAN THIS FIRST AMENDMENT TO THE PERMA-FIX ENVIRONMENTAL SERVICES, INC. 2003 OUTSIDE DIRECTORS STOCK PLAN (the “First Amendment”) was approved by the Board of Directors (the “Board”) of Perma-Fix Environmental Services, Inc. (the “Company”) to be effective on June 13, 2008, subject to the approval of the shareholders of the

Fifth Amendment to Amended and Restated Revolving Credit, Term Loan and Security Agreement between PNC Bank, National Association and Perma-Fix Environmental Services, Inc., dated July 25, 2014.

Exhibit 4.9

Perma-Fix Reports 88% Increase in Revenue to $22.1 Million and $930,000 of Net Income Attributable to Common Stockholders for the Fourth Quarter of 2019

Exhibit 99.2 Perma-Fix Reports 88% Increase in Revenue to $22.1 Million and $930,000 of Net Income Attributable to Common Stockholders for the Fourth Quarter of 2019 ATLANTA – March 19, 2020 – Perma-Fix Environmental Services, Inc. (NASDAQ: PESI) (the “Company”) today announced results for the fourth quarter and full year ended December 31, 2019. Fourth Quarter 2019 Financial Highlights: ● Revenue

Perma-Fix Schedules Fourth Quarter and Fiscal 2019 Conference Call

EX-99.1 2 ex99-1.htm Exhibit 99.1 Perma-Fix Schedules Fourth Quarter and Fiscal 2019 Conference Call ATLANTA – March 17, 2019 — Perma-Fix Environmental Services, Inc. (NASDAQ: PESI), a nuclear services company, today announced that it will host a conference call at 11:00 a.m. Eastern Time on Thursday, March 19, 2020. The call will be available on the Company’s website at www.perma-fix.com, or by c

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported) March 19, 2020 PERMA-FIX ENVIRONMENTAL SERVICES, INC. (Exact name of registrant as specified in its charter) Delaware . 1-11596 . 58-1954497 (State or other jurisdiction of incorporati

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported) February 4, 2020 PERMA-FIX ENVIRONMENTAL SERVICES, INC. (Exact name of registrant as specified in its charter) Delaware 1-11596 58-1954497 (State or other jurisdiction of incorporation

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported) January 16, 2020 PERMA-FIX ENVIRONMENTAL SERVICES, INC. (Exact name of registrant as specified in its charter) Delaware . 1-11596 . 58-1954497 (State or other jurisdiction of incorpora

EXECUTIVE VICE PRESIDENT OF STRATEGIC INITIATIVES Effective: January 1, 2020 EVP OF STRATEGIC INITIATIVES

Exhibit 99.3 EXECUTIVE VICE PRESIDENT OF STRATEGIC INITIATIVES Effective: January 1, 2020 EVP OF STRATEGIC INITIATIVES PURPOSE: To define the compensation plan for the Executive Vice President of Strategic Initiatives (“EVP of Strategic Initiatives”). SCOPE: Perma-Fix Environmental Services, Inc. POLICY: The Compensation Plan is designed to retain, motivate and reward the incumbent to support and

CHIEF EXECUTIVE OFFICER AND PRESIDENT Effective: January 1, 2020 CHIEF EXECUTIVE OFFICER AND PRESIDENT

Exhibit 99.1 CHIEF EXECUTIVE OFFICER AND PRESIDENT Effective: January 1, 2020 CHIEF EXECUTIVE OFFICER AND PRESIDENT PURPOSE: To define the compensation plan for the Chief Executive Officer (“CEO”) and President. SCOPE: Perma-Fix Environmental Services, Inc. POLICY: The Compensation Plan is designed to retain, motivate and reward the incumbent to support and achieve the business, operating and fina

EXECUTIVE VICE PRESIDENT AND CHIEF FINANCIAL OFFICER Effective: January 1, 2020 EXECUTIVE VICE PRESIDENT AND CHIEF FINANCIAL OFFICER

Exhibit 99.2 EXECUTIVE VICE PRESIDENT AND CHIEF FINANCIAL OFFICER Effective: January 1, 2020 EXECUTIVE VICE PRESIDENT AND CHIEF FINANCIAL OFFICER PURPOSE: To define the compensation plan for the Chief Financial Officer (“CFO”). SCOPE: Perma-Fix Environmental Services, Inc. POLICY: The Compensation Plan is designed to retain, motivate and reward the incumbent to support and achieve the business, op

EXECUTIVE VICE PRESIDENT OF NUCLEAR & TECHNICAL SERVICES Effective: January 1, 2020 EXECUTIVE VICE PRESIDENT OF NUCLEAR & TECHNICAL SERVICES

Exhibit 99.4 EXECUTIVE VICE PRESIDENT OF NUCLEAR & TECHNICAL SERVICES Effective: January 1, 2020 EXECUTIVE VICE PRESIDENT OF NUCLEAR & TECHNICAL SERVICES PURPOSE: To define the compensation plan for the EXECUTIVE VICE PRESIDENT (“EVP”) OF NUCLEAR & TECHNICAL SERVICES. SCOPE: Perma-Fix Environmental Services, Inc. POLICY: The Compensation Plan is designed to retain, motivate and reward the incumben

PESI / Perma-Fix Environmental Services, Inc. / HEARTLAND ADVISORS INC Activist Investment

SCHEDULE 13D UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 3) Perma-Fix Environmental Services, Inc. (Name of Issuer) Common Stock, $0.001 Par Value (Title of Class of Securities) 714157203 (CUSIP Number) Vinita K. Paul Vice President, Chief Compliance Officer, General Counsel and Secretary Heartland Ad

PESI / Perma-Fix Environmental Services, Inc. / TALANTA Investment Group, LLC - SC 13D/A Activist Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D (Rule 13d-101) INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO RULE 13d-1(a) AND AMENDMENTS THERETO FILED PURSUANT TO RULE 13d-2(a) Under the Securities Exchange Act of 1934 (Amendment No. 2)* Perma-Fix Environmental Services, Inc. (Name of Issuer) Common Stock, $0.001 Par Value Per Share (Title of Class of Securitie

Results of Operations and Financial Condition, Financial Statements and Exhibits

8-K 1 form8-k.htm UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported) November 7, 2019 PERMA-FIX ENVIRONMENTAL SERVICES, INC. (Exact name of registrant as specified in its charter) Delaware 001-11596 58-1954497 (State or other jurisdict

Perma-Fix Schedules Third Quarter 2019 Conference Call

EX-99.1 2 ex99-1.htm Perma-Fix Schedules Third Quarter 2019 Conference Call ATLANTA – November 1, 2019 — Perma-Fix Environmental Services, Inc. (NASDAQ: PESI), a nuclear services company, today announced that it will host a conference call at 11:00 a.m. Eastern Time on Thursday, November 7, 2019. The call will be available on the Company’s website at www.perma-fix.com, or by calling 844-407-9500 f

Perma-Fix Reports 88% Increase in Revenue to $22.5 Million and $1.8 Million of Net Income Attributable to Common Stockholders for the Third Quarter of 2019

EX-99.2 4 ex99-2.htm Perma-Fix Reports 88% Increase in Revenue to $22.5 Million and $1.8 Million of Net Income Attributable to Common Stockholders for the Third Quarter of 2019 ATLANTA – November 7, 2019 – Perma-Fix Environmental Services, Inc. (“Perma-Fix” or the “Company”) (NASDAQ: PESI) today announced results for the third quarter and nine months ended September 30, 2019. Third Quarter 2019 Fi

PESI / Perma-Fix Environmental Services, Inc. 10-Q - Quarterly Report -

10-Q 1 form10-q.htm UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 Form 10-Q [X] QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2019 Or [ ] TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File No. 111596

Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported) October 17, 2019 PERMA-FIX ENVIRONMENTAL SERVICES, INC. (Exact name of registrant as specified in its charter) Delaware 1-11596 58-1954497 (State or other jurisdiction of incorporation