Mr. Mark Duff
Personal wealth note: Equibles reports source-backed professional activity and disclosed compensation; it does not estimate personal net worth.
About Mr. Mark Duff
Mr. Mark Duff is recorded as CEO at Perma Fix Environmental Services Inc (PESI). Mr. Mark Duff has spoken on 1 earnings call across 1 company, most recently for Perma Fix Environmental Services Inc on May 6, 2026.
Summary generated from SEC filings and earnings-call records held by Equibles.
Affiliation history
Recorded current and former roles; source labels appear when available.
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Current
Start not stated–present
Company network
Recorded roles and call appearances connecting this person to public companies.
Leadership on record at Perma Fix Environmental Services Inc
Other people whose current roles at this company are on record from its filings.
- Mr. Ben Naccarato CFO
- Mr. Troy Eshleman COO
- Troy Eshleman COO
- Joseph T. Grumski Board Member
- Joseph Timothy (J.T.) Grumski Board Member
- Kerry C. Duggan Board Member
- Lieutenant General (Ret.) Thomas P. Bostick Board Member
- Mark Duff Board Member
- Mr. Shelton Board Member
- Mr. Zwecker Board Member
Recent activity
Earnings-call and investor-event appearances, plus filed executive appointments or departures, newest first.