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  4. [Form 4] Perma-Fix Environmental Services, Inc. Insider Trading Activity

Perma-Fix (PESI) Director Reports 2,400-Share Acquisition via Option

Filing Impact
(Neutral)
Filing Sentiment
(Positive)
Form Type
4

Rhea-AI Filing Summary

Mark A. Zwecker, a director of Perma-Fix Environmental Services, Inc. (PESI), reported acquiring 2,400 shares of common stock on 08/28/2025 at a price of $4.19 per share. The Form 4 shows a paired derivative entry indicating a stock option with a $4.19 exercise/conversion price for 2,400 shares and an exercisable/expiration reference date of 09/17/2025. Following the reported transaction, Mr. Zwecker beneficially owns 239,585 shares directly. The filer signed the Form 4 on 09/02/2025 and disclosed the option as a Non-Qualified Stock Option originally granted under the Company’s 2003 Outside Directors Stock Plan.

Positive

  • None.

Negative

  • None.

Insights

TL;DR: Director acquired 2,400 shares via option-related transaction; ownership now 239,585 shares — a routine insider transaction with limited market impact.

The filing documents an acquisition-related transaction coded "M" for 2,400 shares at $4.19, paired with a derivative entry showing a stock option tied to the same amount and price. The disclosure clarifies the option is a Non-Qualified Stock Option under the 2003 Outside Directors Stock Plan. From an investor-impact perspective, the size of the transaction relative to total reported insider holdings appears modest and does not in itself indicate a material change to ownership structure or control. The filing meets Section 16 reporting standards and provides clear pricing and ownership post-transaction.

TL;DR: Insider compliance is timely and descriptive; transaction appears to reflect standard director equity compensation activity.

The Form 4 identifies the reporting person as a director and discloses both the non-derivative acquisition and the related stock option information, including grant plan and vesting note. The explanation cites a Non-Qualified Stock Option under the 2003 Outside Directors Stock Plan, which is consistent with routine director compensation practices. The form is signed and dated, showing procedural compliance. There are no disclosures of unusual arrangements or third-party beneficial ownership in this filing.

Insider ZWECKER MARK A
Role Director
Type Security Shares Price Value
Exercise Stock Option (Right to Buy) 2,400 $0.00 --
Exercise Common Stock 2,400 $4.19 $10K
Holdings After Transaction: Stock Option (Right to Buy) — 0 shares (Direct); Common Stock — 239,585 shares (Direct)
Footnotes (1)
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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).
Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
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)
08/28/2025
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 08/28/2025 M 2,400 A $4.19 239,585 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
Stock Option (Right to Buy) $4.19 08/28/2025 M 2,400 (1) 09/17/2025 Common Stock 2,400 $0 0 D
Explanation of Responses:
1. Non-Qualified Stock Option granted 09/17/2015 under the Company's 2003 Outside Directors Stock Plan. The option vests fully six months from date of grant.
/s/ Mark Zwecker 09/02/2025
** 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.

Source: View Original Filing on SEC EDGAR

FAQ

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

He reported acquiring 2,400 shares of Perma-Fix common stock on 08/28/2025 at a price of $4.19 per share.

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

The Form 4 shows he beneficially owns 239,585 shares following the reported transaction.

Was the reported transaction linked to an option grant or plan?

Yes. The filing references a Non-Qualified Stock Option under the Company’s 2003 Outside Directors Stock Plan in the explanation.

When was the Form 4 signed and filed by the reporting person?

The Form 4 bears the reporting person’s signature dated 09/02/2025.

What does the transaction code 'M' indicate in this Form 4?

The form uses code M in the transaction lines associated with the acquisition and the derivative entry as reported; the filing pairs a non-derivative acquisition and a stock option entry at the same price.