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Nasdaq · CIK 0000891532

PESI PERMA FIX ENVIRONMENTAL SERVICES INC

Insider trading from SEC Form 4. Last filing 11 d ago. Close $13.76 on Oct 9, 2026, +60% from the 52-week low and -29% from the high.

PERMA FIX ENVIRONMENTAL SERVICES INC (PESI) has 65 SEC Form 4 filings on file from 11 insiders, the latest filed on Oct 2, 2026. No insider bought or sold on the open market in the last 90 days; rows filed in that time are grants, exercises, tax withholding and other transactions that carry no view on the price.

8 open-market trades have been scored at PESI. The newest: Kerry C Duggan (director) sold $49k of stock on Sep 16, 2025, filed Sep 16, 2025, scored 42 (moderate). 2 insiders bought within 14 days of each other around Sep 11, 2025.

PESI closed at $13.76 on Oct 9, 2026, 60% above its 52-week low and 29% below its 52-week high.

2 Form 144 notices of planned sales are on file, the latest filed Sep 15, 2025.

Last 90 days

Net insider value
$0
no open-market trades
Buys
0
$0 by 0 insiders
Sells
0
$0 by 0 insiders
Insiders on file
11
with a Form 4 at this company

Price and insider trades, last year

PESIOct 9, 2026 · close 13.76

Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™

Signals

Open-market buys and sells at PERMA FIX ENVIRONMENTAL SERVICES INC, scored.

ScoreInsiderValueHoldingsPrice contextFiled
42ModerateKerry C Duggan
director
sell
$49k
5,653 shares
-61%+30% from low-45% from high
36WeakMark Duff
President and CEO
buy
$7,221
897 shares
+1%+26% from low-47% from high
31WeakLarry Shelton
director
buy
$8,575
1,000 shares
+1%+26% from low-47% from high
26WeakLarry Shelton
director
buy
$9,610
1,000 shares
+1%+54% from low-35% from high
45ModerateMark Duff
President and CEO
buy
$14k
2,050 shares
+2%-
35WeakMark Duff
President and CEO
buy
$7,150
1,000 shares
+1%-
43ModerateTroy Eshleman
Chief Operating Officer
buy
$9,923
1,350 shares
--
25WeakLouis F Centofanti
EVP of Strategic Initiatives
buy
$7,310
1,000 shares
+0%-

Planned sales

Form 144 notices filed before a sale of restricted or control stock, newest first. The sale itself usually reaches a Form 4 within days. All planned sales

FiledSellerSharesValueSale datePast 3 months
Sep 15, 2025 Duggan Kerry C
Director
5,653
0.03% of outstanding
$52kSep 16, 2025none
May 29, 2025 Duggan Kerry C
Director
16,634
0.09% of outstanding
$180kMay 29, 2025none

Transactions

The newest 50 of 89 rows filed, every code.

DateInsiderTransactionSharesPriceValueHoldings afterFiled
Oct 1, 2026Mark A Zwecker
director
AGrant or award
Common Stock
+1,038$11.74$12k248,64411 d ago
Oct 1, 2026Larry Shelton
director
AGrant or award
Common Stock
+1,246$11.74$15k200,22911 d ago
Oct 1, 2026Zach Paul Wamp
director
AGrant or award
Common Stock
+775$11.74$9,09754,24811 d ago
Oct 1, 2026Thomas Bostick
director
AGrant or award
Common Stock
+1,108$11.74$13k51,71811 d ago
Oct 1, 2026Joe Reeder
director
AGrant or award
Common Stock
+1,289$11.74$15k240,63411 d ago
Oct 1, 2026Kerry C Duggan
director
AGrant or award
Common Stock
+748$11.74$8,7808,38811 d ago
Oct 1, 2026Joseph Timothy Grumski
director
AGrant or award
Common Stock
+1,438$11.74$17k69,09911 d ago
Apr 1, 2026Thomas Bostick
director
AGrant or award
Common Stock
+1,559$8.02$12k49,397Apr 2, 2026
Apr 1, 2026Kerry C Duggan
director
AGrant or award
Common Stock
+1,054$8.02$8,4506,821Apr 2, 2026
Nov 17, 2025Louis F Centofanti
EVP of Strategic Initiatives
GGift
Common Stock
-600$0.00$0218,165Feb 10, 2026
Nov 17, 2025Louis F Centofanti
EVP of Strategic Initiatives
GGift
Common Stock
-600$0.00$0217,565Feb 10, 2026
Jan 20, 2026Richard Grondin
EVP of Hanford & Int. Waste Op
MOption exercise
Common Stock
+5,000$7.01$35k39,592Jan 21, 2026
Jan 20, 2026Richard Grondin
EVP of Hanford & Int. Waste Op
FTax withholding
Common Stock
-2,555$13.71$35k37,037Jan 21, 2026
Jan 20, 2026Richard Grondin
EVP of Hanford & Int. Waste Op
MOption exercise
Common Stock
+6,000$3.95$24k43,037Jan 21, 2026
Jan 20, 2026Richard Grondin
EVP of Hanford & Int. Waste Op
FTax withholding
Common Stock
-1,729$13.71$24k41,308Jan 21, 2026
Jan 20, 2026Richard Grondin
EVP of Hanford & Int. Waste Op
MOption exercise
Stock Optionderivative
-5,000$0.00$05,000Jan 21, 2026
Jan 20, 2026Richard Grondin
EVP of Hanford & Int. Waste Op
MOption exercise
Stock Optionderivative
-6,000$0.00$012,000Jan 21, 2026
Jan 2, 2026Joe Reeder
director
AGrant or award
Common Stock
+1,549$9.44$15k236,001Jan 6, 2026
Jan 2, 2026Thomas Bostick
director
AGrant or award
Common Stock
+1,324$9.44$13k47,838Jan 5, 2026
Jan 2, 2026Kerry C Duggan
director
AGrant or award
Common Stock
+929$9.44$8,7725,767Jan 5, 2026
Jan 2, 2026Joseph Timothy Grumski
director
AGrant or award
Common Stock
+1,840$9.44$17k64,028Jan 5, 2026
Jan 2, 2026Mark A Zwecker
director
AGrant or award
Common Stock
+1,325$9.44$13k242,519Jan 5, 2026
Jan 2, 2026Larry Shelton
director
AGrant or award
Common Stock
+1,583$9.44$15k193,394Jan 5, 2026
Jan 2, 2026Zach Paul Wamp
director
AGrant or award
Common Stock
+964$9.44$9,10351,530Jan 5, 2026
Dec 15, 2025Joe Reeder
director
GGift
Common Stock
-11,048$0.00$0237,360Dec 16, 2025
Dec 15, 2025Joe Reeder
director
GGift
Common Stock
-1,090$0.00$0236,270Dec 16, 2025
Dec 15, 2025Joe Reeder
director
GGift
Common Stock
-727$0.00$0235,543Dec 16, 2025
Dec 15, 2025Joe Reeder
director
GGift
Common Stock
-727$0.00$0234,816Dec 16, 2025
Dec 15, 2025Joe Reeder
director
GGift
Common Stock
-364$0.00$0234,452Dec 16, 2025
Oct 1, 2025Joseph Timothy Grumski
director
AGrant or award
Common Stock
+2,228$7.58$17k62,188Oct 2, 2025
Oct 1, 2025Joe Reeder
director
AGrant or award
Common Stock
+2,063$7.58$16k248,408Oct 2, 2025
Oct 1, 2025Larry Shelton
director
AGrant or award
Common Stock
+1,931$7.58$15k191,811Oct 2, 2025
Oct 1, 2025Zach Paul Wamp
director
AGrant or award
Common Stock
+1,201$7.58$9,09850,566Oct 2, 2025
Oct 1, 2025Mark A Zwecker
director
AGrant or award
Common Stock
+1,609$7.58$12k241,194Oct 2, 2025
Oct 1, 2025Thomas Bostick
director
AGrant or award
Common Stock
+1,716$7.58$13k46,514Oct 2, 2025
Oct 1, 2025Kerry C Duggan
director
AGrant or award
Common Stock
+1,158$7.58$8,7724,838Oct 2, 2025
Sep 16, 2025Kerry C Duggan
director
SOpen-market sale
Common Stock
-5,653$8.60$49k3,680Sep 16, 2025
Sep 11, 2025Mark Duff
President and CEO
POpen-market purchase
Common Stock
+897$8.05$7,221134,556Sep 12, 2025
Sep 11, 2025Larry Shelton
director
POpen-market purchase
Common Stock
+1,000$8.58$8,575189,880Sep 12, 2025
Sep 9, 2025Larry Shelton
director
POpen-market purchase
Common Stock
+1,000$9.61$9,610188,880Sep 10, 2025
Sep 2, 2025Larry Shelton
director
MOption exercise
Common Stock
+2,400$4.19$10k187,880Sep 3, 2025
Sep 2, 2025Larry Shelton
director
MOption exercise
Stock Option (Right to Buy)derivative
-2,400$0.00$00Sep 3, 2025
Aug 28, 2025Mark A Zwecker
director
MOption exercise
Common Stock
+2,400$4.19$10k239,585Sep 2, 2025
Aug 28, 2025Mark A Zwecker
director
MOption exercise
Stock Option (Right to Buy)derivative
-2,400$0.00$00Sep 2, 2025
Jul 24, 2025Thomas Bostick
director
AGrant or award
Stock Option (Right to Buy)derivative
+10,000$0.00$010,000Jul 25, 2025
Jul 24, 2025Kerry C Duggan
director
AGrant or award
Stock Option (Right to Buy)derivative
+10,000$0.00$010,000Jul 25, 2025
Jul 24, 2025Joseph Timothy Grumski
director
AGrant or award
Stock Option (Right to Buy)derivative
+10,000$0.00$010,000Jul 25, 2025
Jul 24, 2025Zach Paul Wamp
director
AGrant or award
Stock Option (Right to Buy)derivative
+10,000$0.00$010,000Jul 25, 2025
Jul 24, 2025Joe Reeder
director
AGrant or award
Stock Option (Right to Buy)derivative
+10,000$0.00$010,000Jul 25, 2025
Jul 24, 2025Larry Shelton
director
AGrant or award
Stock Option (Right to Buy)derivative
+10,000$0.00$010,000Jul 25, 2025
50 of 89 rows shown.

Insiders

Everyone who has filed a Form 4 here.

Questions about PESI

Answered from the filings on this page, as of the latest one.

Are insiders buying PESI?

No. In the last 90 days no insider at PERMA FIX ENVIRONMENTAL SERVICES INC bought or sold shares on the open market according to SEC Form 4 filings. The rows on file from that period are grants, exercises, tax withholding or other transactions, which carry no view on the price.

Who was the last insider to trade PESI on the open market?

Kerry C Duggan (director) sold $49k of PESI on Sep 16, 2025 and filed the Form 4 on Sep 16, 2025. InsiderTell scored 42 (moderate).

How many insiders file Form 4 at PERMA FIX ENVIRONMENTAL SERVICES INC?

11 people have filed a Form 4 at PERMA FIX ENVIRONMENTAL SERVICES INC, among them Thomas Bostick (director), Louis F Centofanti (EVP of Strategic Initiatives), Mark Duff (President and CEO). Officers, directors and holders of more than 10% of a share class must report their trades within two business days.

Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.

PESI insider trading: PERMA FIX ENVIRONMENTAL SERVICES INC | InsiderTell