Commission File No. 001-111596 UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 PERMA-FIX ENVIRONMENTAL SERVICES, INC. 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 (Address of principal executive of ices) (Zip Code) (770) 587-9898 (Exact name of registrant ...

Perma-Fix Environmental Services, Inc. (NASDAQ:PESI) Q2 2021 Earnings Conference Call August 11, 2021 11:00 AM ET Company Participants David Waldman - Investor Relations Mark Duff - President & Chief Executive Officer Ben Naccarato - Chief Financial Officer Lou Centofanti - Executive Vice President of Strategic Initiatives Conference Call Participants Howard Brous - Wellington Shields Operator Good day, ladies and gentlemen, and welcome to the Perma-Fix Second Quarter 2021 Conference Call. All lines have be ...

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 SERVICES, INC. (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of in ...

Perma-Fix Environmental Services, Inc. (NASDAQ:PESI) Q1 2021 Earnings Conference Call May 6, 2021 11:00 AM ET Company Participants David Waldman – Investor Relations Mark Duff – President and Chief Executive Officer Ben Naccarato – Chief Financial Officer Conference Call Participants Howard Brous – Wellington Shields Operator Good day, everyone, and welcome to the Perma-Fix First Quarter 2021 Conference Call. [Operator Instructions] Please note that this call may be recorded. It is now my pleasure to turn t ...

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 SERVICES, INC. (Exact name of registrant as specified in its ch ...

Perma-Fix Environmental Services, Inc. (NASDAQ:PESI) Q4 2020 Results Earnings Conference Call March 29, 2021 10:00 AM ET Company Participants Natalie Redman - Laboratory Manager at the Freshwater Institute Mark Duff - CEO Ben Naccarato - CFO Dr. Lou Centofanti - Executive Vice President of Strategic Initiatives Conference Call Participants Howard Brous - Wellington Shields Operator Good day everyone and welcome to today’s Perma-Fix Fourth Quarter 2020 Conference Call. At this time all participants are in a ...

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 SERVICES, INC. (Exact name of registrant as specified in its charter) | Delaware | 58-1954497 | | --- ...

Perma-Fix Environmental Services, Inc. (NASDAQ:PESI) Q3 2020 Earnings Conference Call November 5, 2020 11:00 AM ET Company Participants David Waldman - IR Mark Duff - CEO Ben Naccarato - CFO Dr. Lou Centofanti - Executive Vice President of Strategic Initiatives Conference Call Participants Howard Brous - Wellington Shields Operator Good day ladies and gentlemen and welcome to Perma-Fix Environmental Third Quarter 2020 Business Update Call. [Operator Instructions] As a reminder, this conference is being reco ...

Perma-Fix Environmental Services, Inc. (NASDAQ:PESI) Q2 2020 Results Conference Call August 7, 2020 11:00 AM ET Company Participants Alexandera Boudi - IR Mark Duff - CEO Ben Naccarato - CFO Conference Call Participants Howard Brous - Wellington Shields Steve Levenson - Big Rock Research Tristan Barr - MTB Asset Management James Godfrey - Godfrey Consulting Group Operator Greetings, and welcome to Perma-Fix Environmental Second Quarter 2020 Conference Call. [Operator Instructions] As a reminder, this confer ...

Perma-Fix Environmental Services, Inc. (NASDAQ:PESI) Q1 2020 Earnings Conference Call May 12, 2020 11:00 AM ET Company Participants David Waldman - IR Mark Duff - President & CEO Ben Naccarato - EVP & CFO Lou Centofanti - EVP, Strategic Initiatives Conference Call Participants Howard Brous - Wellington Shields Sam Rebotsky - SER Asset Management Stephen Levenson - Big Rock Research Avram Fisher - Long Cast Advisers Operator Good day, ladies and gentlemen, and welcome to your Perma-Fix First Quarter 2020 Con ...