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ISSUER PROFILE · CIK 0000891532

PERMA FIX ENVIRONMENTAL SERVICES INCPESI

4 13D/G filings 2 distinct filers 8 insider transactions (365d)

Cross-Reference Snapshot

Activist filings
4
4 SC
Distinct filers
2
multi-activist cluster
Insiders (365d)
8
7 buys · 0 sales
Latest short DTC
11.41
as of 2026-10-15

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 →

Form 4 Insider Transactions · last 365d

DateInsiderRoleTypeSharesPriceValue
2026-10-01 Wamp Zach Paul director Award 775 $11.74 $9K
2026-10-01 REEDER JOE director Award 1,289 $11.74 $15K
2026-10-01 Shelton Larry director Award 1,246 $11.74 $15K
2026-10-01 Grumski Joseph Timothy director Award 1,438 $11.74 $17K
2026-10-01 Bostick Thomas director Award 1,108 $11.74 $13K
2026-10-01 Duggan Kerry C director Award 748 $11.74 $9K
2026-10-01 ZWECKER MARK A director Award 1,038 $11.74 $12K
2026-07-13 Shelton Larry director Option exercise 2,400 $4.60 $11K

FINRA Short Interest History

SettlementShort InterestDays to Cover% Δ vs prior
2026-10-15 3,532,643 11.41 +10.3%
2026-09-30 3,203,755 8.13 +19.9%
2026-09-15 2,673,047 11.96 +16.4%
2026-08-31 2,295,415 7.03 -17.5%
2026-08-14 2,783,230 4.39 +32.5%
2026-07-31 2,100,130 3.35 -9.3%
2026-07-15 2,315,207 5.67 +33.3%
2026-06-30 1,736,470 4.47 -10.1%
2026-06-15 1,930,478 10.41 +29.4%
2026-05-29 1,491,682 5.95 -1.0%
2026-05-15 1,506,247 4.55 +8.4%
2026-04-30 1,389,786 13.33 +4.2%

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