Duff Mark

Duff Mark is listed in filings as President and CEO at Perma-Fix Environmental Services, Inc.. This profile follows SEC Form 4 activity through Sep 12, 2025, including purchase activity. Recent filings connect the profile to Perma-Fix Environmental Services, Inc. (PESI). The current snapshot covers public activity from Sep 5, 2024 to Sep 12, 2025. Reported amounts are shown as $7.2K to $5.3K. The page organizes purchases, sales, issuer links, reported share activity, and filing evidence for review as public disclosure data.