Mark A. Zwecker

CIK: 0001256439

Transaction Breakdown

Open Market Buys (P)0 (0.0%)

High conviction signal

Open Market Sales (S)0 (0.0%)

Position reduction

Option Exercises (M)2 (15.4%)

Derivative conversions

Awards (A)11 (84.6%)

Compensation grants

Other (G, F, J, C, D, …)0 (0.0%)

Gifts, tax withholding, conversions, dispositions to the issuer and other codes

Companies & Roles (1)

PESI

PERMA FIX ENVIRONMENTAL SERVICES INC

Director

Discretionary Trading P&L

Holdings

Transaction History (13 total)

PESI
PERMA FIX ENVIRONMENTAL SERVICES INC
Oct 1, 2026
Award(A)
Direct
1K shares at avg. $11.74$12K
PESI
PERMA FIX ENVIRONMENTAL SERVICES INC
Jul 22, 2026
Award(A)
Stock Option (Right to Buy)
Direct
10K shares-
PESI
PERMA FIX ENVIRONMENTAL SERVICES INC
Jul 1, 2026
Award(A)
Direct
1.2K shares at avg. $10.72$13K
PESI
PERMA FIX ENVIRONMENTAL SERVICES INC
Apr 1, 2026
Award(A)
Direct
1.5K shares at avg. $8.02$12K
PESI
PERMA FIX ENVIRONMENTAL SERVICES INC
Jan 2, 2026
Award(A)
Direct
1.3K shares at avg. $9.44$13K
PESI
PERMA FIX ENVIRONMENTAL SERVICES INC
Oct 1, 2025
Award(A)
Direct
1.6K shares at avg. $7.58$12K
PESI
PERMA FIX ENVIRONMENTAL SERVICES INC
Aug 28, 2025
Exercise(M)
Direct
2.4K shares at avg. $4.19$10K
PESI
PERMA FIX ENVIRONMENTAL SERVICES INC
Jul 24, 2025
Award(A)
Stock Option (Right to Buy)
Direct
10K shares-
PESI
PERMA FIX ENVIRONMENTAL SERVICES INC
Jul 1, 2025
Award(A)
Direct
1.6K shares at avg. $7.89$13K
PESI
PERMA FIX ENVIRONMENTAL SERVICES INC
Apr 1, 2025
Award(A)
Direct
2.2K shares at avg. $5.45$12K
PESI
PERMA FIX ENVIRONMENTAL SERVICES INC
Jan 2, 2025
Award(A)
Direct
1.5K shares at avg. $8.30$12K
PESI
PERMA FIX ENVIRONMENTAL SERVICES INC
Oct 1, 2024
Award(A)
Direct
1.3K shares at avg. $9.20$12K
PESI
PERMA FIX ENVIRONMENTAL SERVICES INC
Sep 9, 2024
Exercise(M)
Direct
2.4K shares at avg. $3.70$9K

		Type	Shares	Price		Ownership
Oct 1, 2026	PESI PERMA FIX ENVIRONMENTAL SERVICES INC	Award(A)	1,038	$11.74	$12,184	Direct
Jul 22, 2026	PESI PERMA FIX ENVIRONMENTAL SERVICES INC	Award(A) Stock Option (Right to Buy)	10,000	-	-	Direct
Jul 1, 2026	PESI PERMA FIX ENVIRONMENTAL SERVICES INC	Award(A)	1,167	$10.72	$12,507	Direct
Apr 1, 2026	PESI PERMA FIX ENVIRONMENTAL SERVICES INC	Award(A)	1,520	$8.02	$12,187	Direct
Jan 2, 2026	PESI PERMA FIX ENVIRONMENTAL SERVICES INC	Award(A)	1,325	$9.44	$12,511	Direct
Oct 1, 2025	PESI PERMA FIX ENVIRONMENTAL SERVICES INC	Award(A)	1,609	$7.58	$12,188	Direct
Aug 28, 2025	PESI PERMA FIX ENVIRONMENTAL SERVICES INC	Exercise(M)	2,400	$4.19	$10,056	Direct
Jul 24, 2025	PESI PERMA FIX ENVIRONMENTAL SERVICES INC	Award(A) Stock Option (Right to Buy)	10,000	-	-	Direct
Jul 1, 2025	PESI PERMA FIX ENVIRONMENTAL SERVICES INC	Award(A)	1,586	$7.89	$12,514	Direct
Apr 1, 2025	PESI PERMA FIX ENVIRONMENTAL SERVICES INC	Award(A)	2,235	$5.45	$12,186	Direct
Jan 2, 2025	PESI PERMA FIX ENVIRONMENTAL SERVICES INC	Award(A)	1,468	$8.30	$12,188	Direct
Oct 1, 2024	PESI PERMA FIX ENVIRONMENTAL SERVICES INC	Award(A)	1,324	$9.20	$12,184	Direct
Sep 9, 2024	PESI PERMA FIX ENVIRONMENTAL SERVICES INC	Exercise(M)	2,400	$3.70	$8,880	Direct

1-13 of 13 transactions

About ZWECKER MARK A

ZWECKER MARK A (SEC CIK 0001256439) files insider reports with the SEC as Director of PERMA FIX ENVIRONMENTAL SERVICES INC (PESI).

Signal8 holds 13 ownership filings by ZWECKER MARK A, all Form 4s, filed between Sep 10, 2024 and Oct 2, 2026. Those filings report 13 transactions, from Sep 9, 2024 to Oct 1, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on ZWECKER MARK A's filings is in ATLANTA, GA.

Recent filings by ZWECKER MARK A

Oct 1, 2026: Grant or award of PESI shares (Form 4, code A).
Jul 22, 2026: Grant or award of PESI derivative securities (Form 4, code A).
Jul 1, 2026: Grant or award of PESI shares (Form 4, code A).
Apr 1, 2026: Grant or award of PESI shares (Form 4, code A).
Jan 2, 2026: Grant or award of PESI shares (Form 4, code A).

Other insiders filing for PERMA FIX ENVIRONMENTAL SERVICES INC (PESI)

Grondin Richard, EVP of Hanford Waste Ops
Wamp Zach Paul, Director
REEDER JOE, Director
Shelton Larry, Director
Grumski Joseph Timothy, Director
Bostick Thomas, Director

How to read Form 4 transaction codes