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PERMA FIX ENVIRONMENTAL SERVICES INC

PESI Net buying
CIK 0000891532 #3383 in the set updated 22 Sep 2026
Bought (120 mo)
$528.95K
out of their own pocket, the only kind of buying there is
Sold (120 mo)
$341.66K
$0.00 on a plan · $0.00 straight out of an exercise
Sold at will
$341.66K
4 of 4 sales
Net
+$187.29K
+$187.29K against sales at will

By person

16 insiders · 163 transactions
2.7×

Mark Duff holds only 2.7 times base salary in stock. $1.16M of shares against $417.16K in salary for 2025.

Salary from the company's own proxy. The shares are what Mark Duff last reported holding, valued at $8.60, the price Common Stock was last bought or sold at on the open market here, on 16 Sep 2025.

Insider
Role
Bought
Sold
Net
Holding
Worth
Change
REEDER JOE
Director
$100.46K (2)
$293.05K (2)
−$192.59K
239,345
$2.06M
+104.1%
Duff Mark
President and CEO
$176.91K (48)
+$176.91K
134,556
$1.16M
CENTOFANTI LOUIS F
EVP of Strategic Initiatives
$131.85K (45)
+$131.85K
435,090
$3.74M
+17.0%
Shelton Larry
Director
$55.15K (7)
+$55.15K
198,983
$1.71M
+205.9%
Duggan Kerry C
Director
$48.62K (2)
−$48.62K
7,640
$65.70K
Lombardo Andy
EVP of Nuclear & Technical Svc
$33.11K (11)
+$33.11K
17,448
$150.05K
+1,146%
Naccarato Ben
Chief Financial Officer
$16.69K (9)
+$16.69K
48,811
$419.78K
+4,781%
Eshleman Troy
Chief Operating Officer
$9.92K (1)
+$9.92K
1,350
$11.61K
Grondin Richard
EVP of Hanford & Int. Waste Op
$4.87K (1)
+$4.87K
41,308
$355.25K
+114,644%
ZWECKER MARK A
Director
247,606
$2.13M
+76.2%
LAHAV JACK
resigned as Director 10/27/16
197,433
$1.70M
+1.8%
Grumski Joseph Timothy
Director
67,661
$581.89K
Wamp Zach Paul
Director
53,473
$459.87K
Bostick Thomas
Director
50,610
$435.25K
+3,234%
Kugler Gary
Director
46,013
$395.72K
+57.3%
Cochran Stanley Robert
Director
34,711
$298.52K

No percentages here. These insiders hold more than one class of share between them, and the share count on file covers one of them rather than all. Dividing the two would compare different things.

Insider
Date
Role
Action
Shares
Price
Amount
Shelton Larry
11 Sep 2025
Director
Buy
1,000
$8.58
$8.58K
Duff Mark
11 Sep 2025
President and CEO
Buy
897
$8.05
$7.22K
Shelton Larry
9 Sep 2025
Director
Buy
1,000
$9.61
$9.61K
Duff Mark
21 Mar 2025
President and CEO
Buy
650
$7.05
$4.58K
Duff Mark
21 Mar 2025
President and CEO
Buy
650
$7.03
$4.57K
Duff Mark
21 Mar 2025
President and CEO
Buy
750
$7.02
$5.27K
Naccarato Ben
21 Mar 2025
Chief Financial Officer
Buy
400
$7.00
$2.80K
Duff Mark
18 Mar 2025
President and CEO
Buy
500
$7.20
$3.60K
Duff Mark
18 Mar 2025
President and CEO
Buy
500
$7.10
$3.55K
Eshleman Troy
18 Mar 2025
Chief Operating Officer
Buy
1,350
$7.35
$9.92K
CENTOFANTI LOUIS F
17 Mar 2025
EVP of Strategic Initiatives
Buy
1,000
$7.31
$7.31K
Duff Mark
4 Sep 2024
President and CEO
Buy
350
$9.95
$3.48K
Duff Mark
4 Sep 2024
President and CEO
Buy
500
$9.91
$4.96K
Duff Mark
3 Sep 2024
President and CEO
Buy
750
$10.07
$7.55K
Duff Mark
3 Sep 2024
President and CEO
Buy
500
$10.48
$5.24K
Lombardo Andy
5 Dec 2023
EVP of Nuclear & Technical Svc
Buy
2,150
$7.63
$16.40K
Shelton Larry
1 Dec 2023
Director
Buy
2,000
$7.20
$14.40K
Duff Mark
1 Dec 2023
President and CEO
Buy
750
$7.00
$5.25K
Duff Mark
1 Dec 2023
President and CEO
Buy
750
$7.28
$5.46K
Duff Mark
1 Dec 2023
President and CEO
Buy
750
$7.27
$5.45K
Duff Mark
1 Dec 2023
President and CEO
Buy
750
$7.07
$5.30K
CENTOFANTI LOUIS F
22 Dec 2022
EVP of Strategic Initiatives
Buy
1,700
$3.78
$6.43K
Naccarato Ben
14 Dec 2022
Chief Financial Officer
Buy
575
$3.47
$2.00K
CENTOFANTI LOUIS F
8 Dec 2022
EVP of Strategic Initiatives
Buy
2,000
$3.38
$6.76K
Duff Mark
22 Nov 2022
President and CEO
Buy
1,000
$3.89
$3.89K
CENTOFANTI LOUIS F
27 Sep 2022
EVP of Strategic Initiatives
Buy
500
$4.65
$2.33K
CENTOFANTI LOUIS F
26 Sep 2022
EVP of Strategic Initiatives
Buy
500
$4.60
$2.30K
CENTOFANTI LOUIS F
9 Sep 2022
EVP of Strategic Initiatives
Buy
1,000
$4.89
$4.89K
Grondin Richard
8 Sep 2022
EVP of Waste Treatment Ops
Buy
1,000
$4.87
$4.87K
CENTOFANTI LOUIS F
8 Sep 2022
EVP of Strategic Initiatives
Buy
1,000
$4.86
$4.86K
CENTOFANTI LOUIS F
7 Sep 2022
EVP of Strategic Initiatives
Buy
2,000
$4.74
$9.48K
Duff Mark
7 Sep 2022
President and CEO
Buy
1,000
$4.75
$4.75K
Duff Mark
7 Sep 2022
President and CEO
Buy
500
$4.76
$2.38K
Lombardo Andy
7 Sep 2022
EVP of Nuclear & Technical Svc
Buy
100
$4.71
$471.00
Lombardo Andy
7 Sep 2022
EVP of Nuclear & Technical Svc
Buy
500
$4.73
$2.37K
Lombardo Andy
7 Sep 2022
EVP of Nuclear & Technical Svc
Buy
200
$4.72
$944.00
Lombardo Andy
7 Sep 2022
EVP of Nuclear & Technical Svc
Buy
200
$4.73
$945.20
Shelton Larry
16 Jun 2022
Director
Buy
37
$5.05
$186.85
Shelton Larry
13 Jun 2022
Director
Buy
1,000
$5.33
$5.33K
Naccarato Ben
3 Jun 2022
Chief Financial Officer
Buy
500
$5.50
$2.75K
Duff Mark
12 May 2022
President and CEO
Buy
1,000
$5.50
$5.50K
Duff Mark
12 May 2022
President and CEO
Buy
922
$5.60
$5.16K
Duff Mark
11 May 2022
President and CEO
Buy
78
$5.60
$436.80
Duff Mark
20 Dec 2021
President and CEO
Buy
600
$6.50
$3.90K
Duff Mark
17 Dec 2021
President and CEO
Buy
37
$6.52
$241.24
Duff Mark
17 Dec 2021
President and CEO
Buy
1,000
$6.57
$6.57K
CENTOFANTI LOUIS F
15 Dec 2021
EVP of Strategic Initiatives
Buy
1,000
$6.81
$6.81K
Shelton Larry
4 Jan 2021
Director
Buy
2,395
$4.48
$10.72K
Duff Mark
29 Dec 2020
President and CEO
Buy
500
$5.85
$2.93K
Shelton Larry
9 Nov 2020
Director
Buy
1,000
$6.32
$6.32K
CENTOFANTI LOUIS F
9 Nov 2020
EVP of Strategic Initiatives
Buy
1,000
$6.30
$6.30K
Duff Mark
9 Nov 2020
President and CEO
Buy
500
$6.20
$3.10K
CENTOFANTI LOUIS F
24 Sep 2020
EVP of Strategic Initiatives
Buy
500
$6.81
$3.41K
CENTOFANTI LOUIS F
24 Sep 2020
EVP of Strategic Initiatives
Buy
500
$6.61
$3.31K
Duff Mark
12 Aug 2020
President and CEO
Buy
20
$6.85
$137.00
CENTOFANTI LOUIS F
11 Aug 2020
EVP of Strategic Initiatives
Buy
1,000
$7.01
$7.01K
Duff Mark
11 Aug 2020
President and CEO
Buy
500
$6.92
$3.46K
Duff Mark
11 Aug 2020
President and CEO
Buy
750
$6.99
$5.24K
Duff Mark
11 Aug 2020
President and CEO
Buy
500
$7.11
$3.56K
CENTOFANTI LOUIS F
26 Jun 2020
EVP of Strategic Initiatives
Buy
1,000
$6.15
$6.15K
Naccarato Ben
14 May 2020
Chief Financial Officer
Buy
100
$5.99
$599.00
Naccarato Ben
14 May 2020
Chief Financial Officer
Buy
218
$6.00
$1.31K
Duff Mark
30 Mar 2020
President and CEO
Buy
500
$5.10
$2.55K
CENTOFANTI LOUIS F
24 Mar 2020
EVP of Strategic Initiatives
Buy
1,000
$4.75
$4.75K
Lombardo Andy
24 Mar 2020
EVP of Nuclear & Technical Svs
Buy
67
$4.75
$318.04
Lombardo Andy
24 Mar 2020
EVP of Nuclear & Technical Svs
Buy
2,000
$4.78
$9.55K
Lombardo Andy
24 Mar 2020
EVP of Nuclear & Technical Svs
Buy
1
$4.81
$4.81
Lombardo Andy
24 Mar 2020
EVP of Nuclear & Technical Svs
Buy
221
$4.83
$1.07K
Lombardo Andy
24 Mar 2020
EVP of Nuclear & Technical Svs
Buy
111
$4.90
$543.54
Lombardo Andy
24 Mar 2020
EVP of Nuclear & Technical Svs
Buy
100
$4.89
$488.68
Naccarato Ben
24 Mar 2020
Chief Financial Officer
Buy
500
$4.75
$2.38K
Duff Mark
23 Mar 2020
President and CEO
Buy
500
$4.05
$2.03K
Duff Mark
23 Mar 2020
President and CEO
Buy
1,000
$4.15
$4.15K
CENTOFANTI LOUIS F
30 Sep 2019
EVP of Strategic Initiatives
Buy
200
$4.56
$912.00
CENTOFANTI LOUIS F
26 Sep 2019
EVP of Strategic Initiatives
Buy
300
$4.55
$1.37K
CENTOFANTI LOUIS F
20 Sep 2019
EVP of Strategic Initiatives
Buy
200
$4.39
$878.00
CENTOFANTI LOUIS F
19 Sep 2019
EVP of Strategic Initiatives
Buy
300
$4.16
$1.25K
CENTOFANTI LOUIS F
13 Sep 2019
EVP of Strategic Initiatives
Buy
300
$3.84
$1.15K
CENTOFANTI LOUIS F
13 Sep 2019
EVP of Strategic Initiatives
Buy
100
$3.87
$387.00
CENTOFANTI LOUIS F
12 Sep 2019
EVP of Strategic Initiatives
Buy
400
$3.77
$1.51K
CENTOFANTI LOUIS F
12 Sep 2019
EVP of Strategic Initiatives
Buy
200
$3.80
$760.00
Naccarato Ben
29 Aug 2019
Chief Financial Officer
Buy
500
$3.90
$1.95K
REEDER JOE
28 Aug 2019
Director
Buy
7,500
$3.97
$29.78K
REEDER JOE
26 Aug 2019
Director
Buy
17,894
$3.95
$70.67K
CENTOFANTI LOUIS F
16 Aug 2019
EVP of Strategic Initiatives
Buy
200
$4.00
$800.00
CENTOFANTI LOUIS F
15 Aug 2019
EVP of Strategic Initiatives
Buy
300
$3.94
$1.18K
CENTOFANTI LOUIS F
15 Aug 2019
EVP of Strategic Initiatives
Buy
500
$3.85
$1.93K
Duff Mark
14 Aug 2019
President and CEO
Buy
1,000
$3.75
$3.75K
Duff Mark
14 Aug 2019
President and CEO
Buy
1,000
$3.80
$3.80K
CENTOFANTI LOUIS F
21 Jun 2019
EVP of Strategic Initiatives
Buy
1,000
$3.97
$3.97K
Duff Mark
15 May 2019
President and CEO
Buy
500
$3.70
$1.85K
CENTOFANTI LOUIS F
14 May 2019
EVP of Strategic Initiatives
Buy
1,200
$3.82
$4.58K
Duff Mark
14 May 2019
President and CEO
Buy
500
$3.80
$1.90K
Duff Mark
13 May 2019
President and CEO
Buy
500
$3.90
$1.95K
CENTOFANTI LOUIS F
28 Dec 2018
EVP of Strategic Initiatives
Buy
1,000
$2.36
$2.36K
Duff Mark
28 Dec 2018
President and CEO
Buy
450
$2.51
$1.13K
Duff Mark
28 Dec 2018
President and CEO
Buy
100
$2.20
$220.00
Duff Mark
28 Dec 2018
President and CEO
Buy
500
$2.25
$1.13K
CENTOFANTI LOUIS F
27 Dec 2018
EVP of Strategic Initiatives
Buy
1,800
$2.17
$3.91K
Duff Mark
17 Dec 2018
President and CEO
Buy
700
$2.95
$2.07K
Naccarato Ben
14 Dec 2018
Chief Financial Officer
Buy
500
$2.65
$1.33K
Duff Mark
14 Dec 2018
President and CEO
Buy
1
$2.63
$2.63
CENTOFANTI LOUIS F
14 Dec 2018
EVP of Strategic Initiatives
Buy
300
$2.65
$795.00
CENTOFANTI LOUIS F
13 Dec 2018
EVP of Strategic Initiatives
Buy
200
$2.76
$552.00
CENTOFANTI LOUIS F
7 Dec 2018
EVP of Strategic Initiatives
Buy
100
$2.84
$284.00
CENTOFANTI LOUIS F
7 Dec 2018
EVP of Strategic Initiatives
Buy
200
$2.70
$540.00
CENTOFANTI LOUIS F
6 Dec 2018
EVP of Strategic Initiatives
Buy
400
$2.81
$1.12K
CENTOFANTI LOUIS F
3 Dec 2018
EVP of Strategic Initiatives
Buy
1,000
$3.00
$3.00K
CENTOFANTI LOUIS F
13 Nov 2018
EVP of Strategic Initiatives
Buy
500
$3.30
$1.65K
Duff Mark
9 Nov 2018
President and CEO
Buy
900
$3.45
$3.11K
Duff Mark
9 Nov 2018
President and CEO
Buy
700
$3.55
$2.49K
Duff Mark
9 Nov 2018
President and CEO
Buy
700
$3.35
$2.35K
CENTOFANTI LOUIS F
28 Sep 2018
EVP of Strategic Initiatives
Buy
300
$4.20
$1.26K
CENTOFANTI LOUIS F
27 Sep 2018
EVP of Strategic Initiatives
Buy
700
$4.36
$3.05K
CENTOFANTI LOUIS F
12 Sep 2018
EVP of Strategic Initiatives
Buy
450
$4.74
$2.13K
CENTOFANTI LOUIS F
12 Sep 2018
EVP of Strategic Initiatives
Buy
250
$4.73
$1.18K
CENTOFANTI LOUIS F
12 Sep 2018
EVP of Strategic Initiatives
Buy
200
$4.90
$980.00
Duff Mark
15 Aug 2017
Executive Vice President/COO
Buy
1,500
$3.40
$5.10K
Duff Mark
14 Aug 2017
Executive Vice President/COO
Buy
1,500
$3.45
$5.18K
Naccarato Ben
31 Mar 2017
Chief Financial Officer
Buy
500
$3.18
$1.59K
CENTOFANTI LOUIS F
30 Mar 2017
President and CEO
Buy
500
$3.14
$1.57K
CENTOFANTI LOUIS F
29 Mar 2017
President and CEO
Buy
500
$3.12
$1.56K
CENTOFANTI LOUIS F
28 Mar 2017
President and CEO
Buy
1,000
$3.15
$3.15K
Duff Mark
27 Mar 2017
Executive Vice President/COO
Buy
3,000
$3.15
$9.45K

What was left out

Form 4 filings counted 429
Amendments (4/A) skipped 1
Filings about a different issuer 0
Unreadable filings 0
Joint filings 1
Sales on a Rule 10b5-1 plan 0
Sales straight out of an exercise 0
Sales at will 4
Transactions with no price 1
Shares from compensation/vesting 1,189,000
History held since 3 Oct 2016