STOCK TITAN

Perma-Fix (PESI) awards 10,000 stock options to director Zwecker

(Neutral)
(Neutral)
Form Type
4

Rhea-AI Filing Summary

Perma-Fix Environmental Services director Mark A. Zwecker received a non-qualified stock option for 10,000 shares of common stock on July 22, 2026 at an exercise price of $16.64 per share. The option expires on July 22, 2036 and vests in four equal annual 25% installments starting one year after grant, leaving him with 10,000 options outstanding.

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Insider ZWECKER MARK A
Role Director
Type Security Shares Price Value
Grant/Award Stock Option (Right to Buy) F1 10,000 $0.00 $0.00
Holdings After Transaction: Stock Option (Right to Buy) — 10,000 shares (Direct)
Footnotes (1)
  1. F1. Non-Qualified Stock Option granted 07/22/2026 under the Company's 2003 Outside Directors Stock Plan. The option vests in four equal annual installmens of 25% each, beginning on the first anniversary of the grant date and on each successive anniversary thereafter.
Option grant size 10,000.0000 options Non-qualified stock option granted to director on 07/22/2026
Exercise price $16.6400 per share Exercise price of the non-qualified stock option
Expiration date 2036-07-22 Option expiration for the 10,000-share grant
Vesting schedule 25% annually over 4 years Four equal annual installments beginning on first anniversary of grant
Options held after grant 10,000.0000 options Total derivative securities owned following the reported transaction
Transaction date 2026-07-22 Grant date of the non-qualified stock option
Non-Qualified Stock Option financial
"Non-Qualified Stock Option granted 07/22/2026 under the Company's 2003..."
A non-qualified stock option (NSO) is a contract that lets an employee or service provider buy company shares at a fixed price for a set period, like a voucher to purchase stock later at today’s price. It matters to investors because exercising NSOs creates ordinary income for the holder and can increase share count, affecting a company’s earnings and ownership mix; think of it as a future sale that can dilute existing shareholders and has immediate tax consequences for the recipient.
2003 Outside Directors Stock Plan financial
"granted 07/22/2026 under the Company's 2003 Outside Directors Stock Plan."
exercise price financial
"conversion or exercise price of 16.6400 per share for the option."
The exercise price is the fixed amount at which you can buy or sell an asset, like a stock, when using an options contract. It matters because it helps determine whether exercising the option will be profitable or not, depending on the current market price. Think of it as the set price you agree on today to buy or sell later.
vesting financial
"The option vests in four equal annual installments of 25% each."
Vesting is the process by which you earn full ownership of something, like company stock or a retirement benefit, over time. It’s like earning the right to keep a gift piece by piece the longer you stay with a company, making sure employees stay committed before they receive all the benefits.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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FAQ

What insider transaction did Mark A. Zwecker report for PESI?

Mark A. Zwecker reported receiving a non-qualified stock option for 10,000 shares of Perma-Fix common stock. The option was granted on July 22, 2026 at an exercise price of $16.64 per share and expires on July 22, 2036.

What is the exercise price of Mark A. Zwecker’s new PESI stock options?

The new option grant carries an exercise price of $16.64 per share. This non-qualified stock option covers 10,000 shares of Perma-Fix common stock and was awarded under the company’s 2003 Outside Directors Stock Plan on July 22, 2026.

How do Mark A. Zwecker’s PESI stock options vest?

The option vests in four equal annual installments of 25% each. Vesting begins on the first anniversary of the July 22, 2026 grant date, with additional 25% installments on each of the next three anniversaries until fully vested.

When do Mark A. Zwecker’s PESI stock options expire?

The non-qualified stock option expires on July 22, 2036. If fully vested and exercised before that date, it allows purchase of up to 10,000 shares of Perma-Fix common stock at an exercise price of $16.64 per share.

How many PESI options does Mark A. Zwecker hold after this grant?

After this reported grant, Mark A. Zwecker holds 10,000 stock options directly. These options were all acquired in the July 22, 2026 non-qualified stock option award and are subject to the four-year annual vesting schedule.
SEC Form 4
FORM 4UNITED 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 GEORGIA 30350

(City)(State)(Zip)

UNITED STATES

(Country)
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)
XDirector10% Owner
Officer (give title below)Other (specify below)
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
07/22/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)

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)
CodeVAmount(A) or (D)Price
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)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Stock Option (Right to Buy)$16.6407/22/2026A10,000 (1)07/22/2036Common Stock10,000$010,000D
Explanation of Responses:
1. Non-Qualified Stock Option granted 07/22/2026 under the Company's 2003 Outside Directors Stock Plan. The option vests in four equal annual installmens of 25% each, beginning on the first anniversary of the grant date and on each successive anniversary thereafter.
/s/ Mark Zwecker07/23/2026
** Signature of Reporting PersonDate
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.
* Form 4: SEC 1474 (03-26)