Every Form 4 that Perma-Fix Environmental Services, Inc. (PESI) has filed with the SEC in the last 12 months is listed below, newest first, and each one links through to the document itself with the summary and the scores our analysis gives it.
A Form 4 covers the transactions officers, directors and large holders report, so if you follow PESI and want that one kind of document rather than the whole filing history, this is the page to keep. The company's other filings, of every form, are on the full PESI filings page.
Perma Fix Environmental Services Inc. (PESI) director Zach Paul Wamp acquired 775 shares of common stock through a grant or award on October 1, 2026, at a reported price of 11.7375 per share. The shares were held directly; his reported direct holdings after the acquisition were 54,248 shares. No Rule 10b5-1 plan is reported.
Perma Fix Environmental Services Inc. (PESI) director Joe Reeder received a grant of 1,289 common shares on October 1, 2026. The reported price was $11.7375 per share. His directly held position after the award was 240,634 shares. The transaction is identified as a grant or award acquisition rather than a purchase.
Perma Fix Environmental Services Inc. director Larry Shelton received a grant/award of 1,246 common shares on October 1, 2026, at a reported price of $11.7375 per share. After the award, he directly held 200,229 shares.
Perma Fix Environmental Services Inc. (PESI) director Joseph Timothy Grumski acquired 1,438 shares of common stock through a grant or award on October 1, 2026. The reported per-share price was $11.7375, and his reported direct holdings after the transaction were 69,099 shares. The transaction is reported as a grant or award acquisition.
Perma Fix Environmental Services (PESI) director Thomas Bostick received a compensation-related award of 1,108 common shares on October 1, 2026. The transaction is recorded as a grant or award acquisition, with a reported price of $11.7375 per share. His directly held position after the award was 51,718 shares.
Perma Fix Environmental Services Inc. director Kerry C. Duggan received an award of 748 shares of Common Stock on October 1, 2026. The reported per-share value was $11.7375. After the award, Duggan reported direct holdings of 8,388 shares. The transaction is reported as an award acquisition, not a market purchase.
Mark A. Zwecker, a director of Perma Fix Environmental Services Inc. (PESI), acquired 1,038 shares of common stock in a grant or award on October 1, 2026. The reported per-share price was $11.7375. After the transaction, he directly held 248,644 shares of common stock. The transaction is reported as a grant or award acquisition, not a purchase or sale.
Perma-Fix Environmental Services director Joe Reeder received a grant of a Non-Qualified Stock Option covering 10,000 shares of common stock. The option has an exercise price of 16.6400, expires on 2036-07-22, and was issued under the 2003 Outside Directors Stock Plan. It vests in four equal annual installments of 25% beginning on the first anniversary of the grant date, leaving Reeder with 10,000 derivative securities directly held after this grant.
Perma-Fix Environmental Services director Zach Paul Wamp received a grant of 10000.0000 Non-Qualified Stock Options to purchase Common Stock at an exercise price of 16.6400 per share. The award vests in four equal annual 25% installments starting one year after the 2026-07-22 grant date and expires on 2036-07-22. Following this grant, he holds 10000.0000 derivative securities directly.
Perma-Fix Environmental Services Inc. director Larry Shelton received a grant of stock options. On 07/22/2026 he was awarded 10,000 Non-Qualified Stock Options to purchase Common Stock at an exercise price of $16.64 per share, expiring on 07/22/2036. The options were granted under the Company's 2003 Outside Directors Stock Plan and vest in four equal annual installments of 25% each, beginning on the first anniversary of the grant date and on each successive anniversary. Following this grant, Shelton holds 10,000 stock options directly.
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.
Perma-Fix Environmental Services director Thomas Bostick received a Non-Qualified Stock Option on 2026-07-22 for 10,000 shares of common stock at an exercise price of $16.64 per share. The option vests in four equal annual installments of 25% beginning on the first anniversary of the grant date and on each successive anniversary, and expires on 2036-07-22. Following this grant, Bostick directly holds 10,000 stock options.
Perma-Fix Environmental Services director Joseph Timothy Grumski received a grant of 10,000 non-qualified stock options on July 22, 2026. The options have an exercise price of $16.64 per share, expire on July 22, 2036, and are exercisable for 10,000 shares of common stock.
The award was issued under the Company’s 2003 Outside Directors Stock Plan and vests in four equal annual installments of 25% each, beginning on the first anniversary of the grant date and on each successive anniversary thereafter. Following this grant, Grumski holds 10,000 derivative securities directly.
Perma-Fix Environmental Services director Kerry C. Duggan received a Non-Qualified Stock Option covering 10,000 shares of Common Stock on 07/22/2026 under the 2003 Outside Directors Stock Plan. The option has a $16.64 exercise price, expires on 07/22/2036, and vests in four equal annual installments of 25% each starting on the first anniversary of the grant date.
Perma-Fix Environmental Services director Larry Shelton exercised stock options to acquire 2,400 shares of common stock at $4.60 per share on July 13, 2026. The options were non-qualified awards granted July 28, 2016 under the Outside Directors Stock Plan. Following the exercise, he holds 198,983 shares directly.
Grumski Joseph Timothy reported acquisition or exercise transactions in this Form 4 filing.
PERMA FIX ENVIRONMENTAL SERVICES INC director Joseph Timothy Grumski received a stock award of 1,528 Common Stock shares. The shares were granted at a reference value of $10.7175 per share as a compensation-related award, not an open-market purchase.
Following this grant, he directly holds 67,661 Common Stock shares. This Form 4 reflects a routine equity compensation transaction rather than a discretionary market trade.
ZWECKER MARK A reported acquisition or exercise transactions in this Form 4 filing.
Perma-Fix Environmental Services director Mark A. Zwecker received 1,167 shares of Common Stock as a grant or award. The shares were valued at $10.7175 per share on the transaction date, bringing his directly held stake to 247,606 shares, indicating a relatively small, routine increase in ownership.
Bostick Thomas reported acquisition or exercise transactions in this Form 4 filing.
PERMA FIX ENVIRONMENTAL SERVICES INC director Thomas Bostick received a grant of 1,213 shares of Common Stock, valued at $10.7175 per share. This was a compensation-related award rather than an open-market purchase. Following the grant, his directly held position increased to 50,610 shares of the company’s common stock.
REEDER JOE reported acquisition or exercise transactions in this Form 4 filing.
Perma-Fix Environmental Services director Joe Reeder received a grant of 1,458 shares of Common Stock on 2026-07-01 at a value of $10.7175 per share. This was a compensation-related award, not an open-market purchase. Following the grant, his direct holdings total 239,345 shares.
Wamp Zach Paul reported acquisition or exercise transactions in this Form 4 filing.
PERMA FIX ENVIRONMENTAL SERVICES INC director Zach Paul Wamp received a grant of 849 shares of Common Stock at $10.7175 per share. This was a compensation-related award, not an open-market purchase. After this grant, he directly holds 53,473 shares of the company’s common stock.
Duggan Kerry C reported acquisition or exercise transactions in this Form 4 filing.
PERMA FIX ENVIRONMENTAL SERVICES INC director Kerry C. Duggan received an equity award of 819 shares of Common Stock on July 1, 2026 at a value of $10.7175 per share. This compensation-related grant increased her direct holdings to 7,640 shares, and was not an open-market purchase or sale.
Shelton Larry reported acquisition or exercise transactions in this Form 4 filing.
PERMA FIX ENVIRONMENTAL SERVICES INC director Larry Shelton received a grant of 1,365 shares of Common Stock as compensation. The shares were awarded at a reference value of $10.7175 per share, rather than bought on the open market. After this grant, Shelton directly holds 196,583 shares of the company’s stock, so the award represents a relatively small addition to his existing position.
PERMA FIX ENVIRONMENTAL SERVICES INC director Mark A. Zwecker received a stock award of 1,520 shares of Common Stock. The grant was recorded at a price of $8.0175 per share and reported as a grant, award, or other acquisition rather than an open-market purchase.
After this award, Zwecker directly holds 244,039 shares of Perma-Fix Common Stock, showing his total reported direct ownership following the transaction.
REEDER JOE reported acquisition or exercise transactions in this Form 4 filing.
PERMA FIX ENVIRONMENTAL SERVICES INC director Joe Reeder received a grant of 1,886 shares of Common Stock at $8.0175 per share. This non-derivative award on April 1, 2026 increased his directly owned stake to 237,887 shares, reflecting additional equity-based compensation rather than an open-market purchase.
Perma-Fix Environmental Services director Kerry C. Duggan reported an acquisition of company stock through a grant or award. On this transaction, Duggan received 1,054 shares of common stock valued at $8.0175 per share. After the grant, Duggan directly holds a total of 6,821 common shares.
Grumski Joseph Timothy reported acquisition or exercise transactions in this Form 4 filing.
PERMA FIX ENVIRONMENTAL SERVICES INC director Joseph Timothy Grumski received a grant of 2,105 shares of Common Stock on April 1, 2026 at a reported value of $8.0175 per share. Following this compensation-related award, he directly holds 66,133 shares of the company’s Common Stock.
Bostick Thomas reported acquisition or exercise transactions in this Form 4 filing.
PERMA-FIX ENVIRONMENTAL SERVICES INC director Thomas Bostick reported receiving 1,559 shares of Common Stock as a grant or award. The shares were valued at $8.0175 per share for the transaction. Following this award, he directly holds a total of 49,397 Common Stock shares.
Wamp Zach Paul reported acquisition or exercise transactions in this Form 4 filing.
Perma-Fix Environmental Services director Zach Paul Wamp received a stock award of 1,094 shares of Common Stock, valued at $8.0175 per share. This compensation-related grant increased his direct holdings to 52,624 shares, reflecting additional equity-based alignment with the company’s performance.
PERMA FIX ENVIRONMENTAL SERVICES INC director Larry Shelton received a grant of 1,824 shares of Common Stock. The shares were acquired on April 1, 2026 as a grant/award acquisition at a value of $8.0175 per share. After this non‑open‑market award, Shelton directly owns 195,218 shares of the company’s common stock.
Perma-Fix Environmental Services (PESI) executive and director Louis F. Centofanti reported charitable stock gifts. On November 17, 2025, he made two bona fide gifts of 600 shares of common stock each to non-profit organizations unaffiliated with him or the company, at a reported price of $0.00 per share. After these transactions, he beneficially owned 217,565 common shares directly and an additional 62,800 shares indirectly through his spouse.
Perma-Fix Environmental Services executive Richard Grondin reported multiple stock option exercises and related share withholding. On January 20, 2026, he exercised an incentive stock option for 5,000 shares of common stock at an exercise price of $7.005 per share, with 2,555 shares withheld at a fair market value of $13.71 per share to cover the $35,025 aggregate exercise price. He also exercised a separate incentive stock option for 6,000 shares at an exercise price of $3.95 per share, with 1,729 shares withheld at the same $13.71 fair market value per share to cover the $23,700 aggregate exercise price. Following these transactions, he directly held 41,308 shares of common stock and 12,000 stock options.
Perma-Fix Environmental Services director Joe Reeder reported acquiring additional company stock. On January 2, 2026, he acquired 1,549 shares of common stock at a price of $9.4425 per share. Following this transaction, he beneficially owned 236,001 shares of Perma-Fix Environmental Services common stock in direct ownership.
Perma-Fix Environmental Services Inc. director Thomas P. Bostick acquired additional common stock in the company. On January 2, 2026, he acquired 1,324 shares of common stock at $9.4425 per share. Following this transaction, he directly owns 47,838 common shares of Perma-Fix Environmental Services Inc.
Perma Fix Environmental Services Inc. (PESI) reported that one of its directors made several gifts of common stock on 12/15/2025. The largest disclosed gift transferred 11,048 shares in equal amounts to the reporting person’s four adult children, who are not affiliated with the company and over whom the director retains no ownership control.
Additional bona fide gifts of common stock were made to non-profit organizations unaffiliated with either the director or Perma Fix Environmental Services Inc. Following these transactions, the director directly beneficially owned 234,452 shares of the company’s common stock.