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ISSUER PROFILE · CIK 0000891532

PERMA FIX ENVIRONMENTAL SERVICES INCPESI

4 13D/G filings 2 distinct filers 0 insider transactions (365d)

Cross-Reference Snapshot

Activist filings
4
4 SC
Distinct filers
2
multi-activist cluster
Insiders (365d)
0
0 buys · 0 sales
Latest short DTC
5.48
as of 2026-03-31

13D/G Filings Timeline · 4 total

FiledFormFilerStakeSharesIntent
2021-11-16 SC HEARTLAND ADVISORS INC view →
2021-09-14 SC HEARTLAND ADVISORS INC view →
2021-01-13 SC HEARTLAND ADVISORS INC view →
2019-12-20 SC TALANTA Investment Group, LLC view →

FINRA Short Interest History

SettlementShort InterestDays to Cover% Δ vs prior
2026-03-31 1,465,706 5.48 +21.6%
2026-03-13 1,204,860 11.16 +5.5%
2026-02-27 1,141,713 8.48 -4.9%
2026-02-13 1,200,709 8.06 -8.0%
2026-01-30 1,305,431 9.22 -5.3%
2026-01-15 1,378,088 16.74 -0.7%
2025-12-31 1,387,188 13.28 -8.9%
2025-12-15 1,522,357 15.76 +0.5%

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