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PERMA FIX ENVIRONMENTAL SERVICES INC

PESI No buying or selling

CIK 0000891532 #3383 in the set updated 21 Sep 2026

Bought (12 mo)

$0.00

out of their own pocket, the only kind of buying there is

Sold (12 mo)

$0.00

$0.00 on a plan · $0.00 straight out of an exercise

Sold at will

$0.00

0 of 0 sales

Net

$0.00

$0.00 against sales at will

By person

12 insiders · 3 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

Of company

Worth

Change

ZWECKER MARK A

Director

—

247,606

1.17%

$2.13M

+6.3%

REEDER JOE

Director

—

239,345

1.13%

$2.06M

+0.5%

CENTOFANTI LOUIS F

EVP of Strategic Initiatives

—

217,565

1.03%

$1.87M

+5.5%

Shelton Larry

Director

—

198,983

0.9378%

$1.71M

+13.3%

Duff Mark

President and CEO

—

134,556

0.6341%

$1.16M

+19.0%

Grumski Joseph Timothy

Director

—

67,661

0.3189%

$581.89K

+27.3%

Wamp Zach Paul

Director

—

53,473

0.2520%

$459.87K

+20.0%

Bostick Thomas

Director

—

50,610

0.2385%

$435.25K

+33.2%

Naccarato Ben

Chief Financial Officer

—

48,811

0.2300%

$419.78K

+28.9%

Grondin Richard

EVP of Hanford & Int. Waste Op

—

41,308

0.1947%

$355.25K

+43.5%

Duggan Kerry C

Director

—

7,640

0.0360%

$65.70K

−64.2%

Eshleman Troy

Chief Operating Officer

—

1,350

0.0064%

$11.61K

—

Individual transactions

Insider

Date

Role

Action

Price

Amount

Shelton Larry

13 Jul 2026

Director

Exercised, kept

2,400

$4.60

$11.04K

Grondin Richard

20 Jan 2026

EVP of Hanford & Int. Waste Op

Exercised, kept

6,000

$3.95

$23.70K

Grondin Richard

20 Jan 2026

EVP of Hanford & Int. Waste Op

Exercised, kept

5,000

$7.01

$35.03K

Show all 3 transactions →

What was left out

Form 4 filings counted 39

Amendments (4/A) skipped 0

Filings about a different issuer 0

Unreadable filings 0

Joint filings 0

Sales on a Rule 10b5-1 plan 0

Sales straight out of an exercise 0

Sales at will 0

Transactions with no price 0

Shares from compensation/vesting 73,701

History held since 3 Oct 2016