Perma-Fix (PESI) Director Reports 1,609-Share Purchase

Rhea-AI Filing Summary

Mark A. Zwecker, a director of Perma-Fix Environmental Services, Inc. (PESI), reported a purchase of company common stock on 10/01/2025. The Form 4 shows he acquired 1,609 shares at a price of $7.575 per share and, after the transaction, beneficially owned 241,194 shares. The filing was signed on 10/02/2025 and indicates the report was filed by one reporting person. No derivative or option transactions are reported on this form.

Positive

• Director purchase disclosed: 1,609 shares were acquired, showing insider buying activity.
• Complete ownership disclosure: Post-transaction beneficial ownership reported as 241,194 shares.

Negative

• None.

Insights

Financial Analyst

TL;DR Insider director purchased 1,609 shares at $7.575, holding 241,194 shares total.

This Form 4 discloses a straightforward open-market purchase by a company director. The transaction is non-derivative and involves 1,609 shares at $7.575 each. The filing provides clear post-transaction beneficial ownership of 241,194 shares. There are no amendments, joint filers, or derivative instruments disclosed on this filing.

Corporate Governance Expert

TL;DR Director reported a standard Section 16 purchase; disclosure appears complete for the transaction shown.

The Form 4 lists the reporting person27s address and relationship as a director. It indicates the form was filed by one reporting person and contains a manual signature dated 10/02/2025. The report covers a single non-derivative acquisition on 10/01/2025 and shows no indirect ownership or additional complex holdings disclosed here.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider ZWECKER MARK A

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	1,609	$7.575	$12K

Holdings After Transaction: Common Stock — 241,194 shares (Direct)

Footnotes (1)

Form 4 Insider Transactions: What Each Field Means →

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person^*

ZWECKER MARK A

(Last) (First) (Middle)

8302 DUNWOODY PLACE, SUITE 250

(Street)

ATLANTA, GA 30350

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
PERMA FIX ENVIRONMENTAL SERVICES INC [ PESI ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
10/01/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	10/01/2025		A		1,609	A	$7.575	241,194	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

	/s/ Mark Zwecker	10/02/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What did Mark A. Zwecker report on Form 4 for PESI?

He reported purchasing 1,609 shares of Perma-Fix Environmental Services, Inc. common stock on 10/01/2025 at $7.575 per share.

How many PESI shares does Mark A. Zwecker beneficially own after the transaction?

241,194 shares are reported as beneficially owned following the 10/01/2025 purchase.

Were any derivative securities reported by the reporting person on this Form 4?

No. Table II for derivative securities contains no reported transactions or holdings.

When was the Form 4 signed and filed?

The reporting person signed the form on 10/02/2025.

Is the Form 4 filed jointly or by one reporting person?

The form was filed by one reporting person.