Richard Grondin Exercises Options at Perma FIX Environmental Services Inc (PESI) — SEC Form 4, Oct 29, 2026

SEC Form 4 · No Market Transaction

Option Exercise

Derivative exercise — no open market transaction.

Reporting Owner

Richard Grondin

EVP

TXN 2026-10-28 · FILED 2026-10-29

Equity Position 46.3K sh 43,872 → 46,308

Equity Change +5.6% shares held after vs before

Filing Lag 1 business day within 2-day SEC deadline

Form 4 · Statement of Changes in Beneficial Ownership

Perma FIX Environmental Services Inc

PESI CIK 0000891532

Reporting Owner

Name	Relationship
Richard Grondin CIK 0001819004	EVP

Richard Grondin at Perma FIX Environmental Services Inc Full insider history

Bought (12 mo) —

Sold (12 mo) —

More from this insider at Perma FIX Environmental Services Inc

Non-Derivative Securities Transactions

Title	Date	Type	Shares	Price	Net Total	Post-Txn	Ownership
Common StockF1	2026-10-28	M - Exercise	5,000 A	$7.01	+$35,025	46,308	Direct
Common StockF1	2026-10-28	F - Tax Payment	2,564 D	$13.66	-$35,024	43,744	Direct

Derivative Securities Transactions

Title	Strike	Date	Type	Shares	Price	Expiration	Underlying	Ownership
Stock OptionF1 F1	$7.01	2026-10-28	M - Exercise	5,000 D	$0.00	2027-10-14	5,000 Common Stock	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. Show more

Institutional Holders

Largest by reported value

5%+ Holders · 13D/G 2 filers

Latest Schedule 13D/G per filer; stakes the filer reported closed are left out.

Other insiders at Perma FIX Environmental Services Inc

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