Perma Fix EVP Grondin exercises 5,000 stock options

Q: How many PESI shares did Richard Grondin acquire through options?

Richard Grondin exercised an incentive stock option for 5,000 PESI common shares on October 28, 2026. The option was granted under the company's 2017 Stock Option Plan, and Perma Fix withheld 2,564 shares to pay the exercise price.

Q: What was the exercise price for Richard Grondin's PESI options?

The exercise price was $7.005 per share, with an aggregate exercise price of $35,025. Perma Fix withheld 2,564 shares valued at $13.66 per share to pay it.

Perma Fix withheld 2,564 common shares valued at $13.66 each to pay the aggregate exercise price.

Filing Impact

(Neutral)

Filing Sentiment

(Neutral)How Sentiment works

Sentiment and the balance of points

Rhea-AI Sentiment reads the wording of the document, how positive or negative its language is on a 1 to 5 scale. The balance of points shown with the takes weighs what the document actually discloses, so the two can disagree, for example when a trial that missed its main goal is described in upbeat language.

How Sentiment works How the balance works

Form Type

Rhea-AI Filing Summary

Perma Fix Environmental Services (PESI) EVP of Hanford Waste Ops Richard Grondin exercised an incentive stock option on October 28, 2026, for 5,000 common shares at an exercise price of $7.005 per share. The company withheld 2,564 shares, valued at $13.66 each, to pay the $35,025 aggregate exercise price. The option position was reported as zero following the exercise.

Insider Trade Summary

5,000 shares exercised/converted

Exercise 3 txns

Insider Grondin Richard

Role EVP of Hanford Waste Ops

Type	Security	Shares	Price	Value
Exercise	Stock Option ^F1	5,000	$0.00	$0.00
Exercise	Common Stock ^F1	5,000	$7.005	$35K
Exercise Price or Tax Liability	Common Stock ^F1	2,564	$13.66	$35K

Holdings After Transaction: Stock Option — 0 contracts (Direct); Common Stock — 43,744 shares (Direct)

Footnotes (1)

F1. On October 28, 2026, the Reporting Person exercised the incentive stock option granted 10/14/2021 under the Company's 2017 Stock Option Plan (the "2017 Plan") for the purchase of 5,000 shares of the Company's Common Stock at an exercise price of $7.005 per share (the "Option shares"). As permitted by the 2017 Plan, the Reporting Person elected to pay the exercise price of the Option Shares by having the Company withhold from the Option Shares a number of shares having a fair market value equal to the aggregate exercise price of $35,025. Since the fair market value of the Company's Common Stock on October 28, 2026, (as determined in accordance with the 2017 Plan) was $13.66 per share, the Company withheld 2,564 shares of Common Stock ($35,025 divided by $13.66) to pay the aggregate exercise price of the option.

Key Figures

Options exercised: 5,000 options Common shares acquired: 5,000 shares Exercise price: $7.005 per share +4 more

7 metrics

Options exercised 5,000 options October 28, 2026

Common shares acquired 5,000 shares October 28, 2026

Exercise price $7.005 per share Incentive stock option exercised October 28, 2026

Shares withheld for exercise price 2,564 shares October 28, 2026

Fair market value $13.66 per share October 28, 2026

Aggregate exercise price $35,025 Option exercised October 28, 2026

Options following transaction 0 options Reported after the October 28, 2026 exercise

Key Terms

incentive stock option, 2017 Stock Option Plan, fair market value, aggregate exercise price

4 terms

incentive stock option financial

"exercised the incentive stock option"

An incentive stock option is a type of employee benefit that gives a worker the right to buy company shares at a fixed price, with special tax advantages if the employee holds the shares for a required period. Think of it as a coupon to buy future shares at today’s price that can result in lower tax on the gain. Investors care because ISOs can dilute share count, align staff incentives with the stock price, and affect company compensation costs and the timing of potential share sales.

2017 Stock Option Plan financial

"under the Company's 2017 Stock Option Plan"

fair market value financial

"fair market value of the Company's Common Stock"

The price a willing buyer and a willing seller would agree on for an asset or security when neither is under pressure and both have access to the same information. Think of it as the market’s neutral estimate of what something is worth, like the price two neighbors would settle on for a car after comparing similar listings. Investors care because fair market value guides buying and selling decisions, tax reporting, portfolio valuation, and how accurately company assets are reflected in financial statements.

aggregate exercise price financial

"to pay the aggregate exercise price"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

How many PESI shares did Richard Grondin acquire through options?

Richard Grondin exercised an incentive stock option for 5,000 PESI common shares on October 28, 2026. The option was granted under the company's 2017 Stock Option Plan, and Perma Fix withheld 2,564 shares to pay the exercise price.

What was the exercise price for Richard Grondin's PESI options?

The exercise price was $7.005 per share, with an aggregate exercise price of $35,025. Perma Fix withheld 2,564 shares valued at $13.66 per share to pay it.

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

Form 4 Insider Transactions: What Each Field Means →

See more from StockTitan in Google Search and AI answers. Adds StockTitan as a preferred source · opens Google

Add on Google

Available on EDGAR 10/29/2026 - 04:00 PM EDT Accepted by SEC EDGAR 10/29/2026 - 04:00 PM EDT

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^*

Grondin Richard

(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)

	Director	10% Owner
X	Officer (give title below)	Other (specify below)
	EVP of Hanford Waste Ops

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
10/28/2026

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

X	Form 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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	10/28/2026		M		5,000⁽¹⁾	A	$7.005	46,308	D
Common Stock	10/28/2026		F		2,564⁽¹⁾	D	$13.66	43,744	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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
Stock Option	$7.005	10/28/2026		M			5,000⁽¹⁾	⁽¹⁾	10/14/2027	Common Stock	5,000	$0	0	D

Explanation of Responses:

1. On October 28, 2026, the Reporting Person exercised the incentive stock option granted 10/14/2021 under the Company's 2017 Stock Option Plan (the "2017 Plan") for the purchase of 5,000 shares of the Company's Common Stock at an exercise price of $7.005 per share (the "Option shares"). As permitted by the 2017 Plan, the Reporting Person elected to pay the exercise price of the Option Shares by having the Company withhold from the Option Shares a number of shares having a fair market value equal to the aggregate exercise price of $35,025. Since the fair market value of the Company's Common Stock on October 28, 2026, (as determined in accordance with the 2017 Plan) was $13.66 per share, the Company withheld 2,564 shares of Common Stock ($35,025 divided by $13.66) to pay the aggregate exercise price of the option.

	/s/ Richard Grondin	10/29/2026
	** 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.
* Form 4: SEC 1474 (03-26)

Source: View Original Filing on SEC EDGAR