Every Form 4 that NPK International Inc. (NPKI) 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 NPKI 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 NPKI filings page.
NPK International Inc. (NPKI) reported that its Chief Accounting Officer, Warren Matthew James, sold common stock in an open-market transaction. On September 9, 2026, he sold 2,991 shares of common stock at a weighted average price of $13.41 per share, with individual trade prices ranging from $13.33 to $13.51.
The sale was executed automatically under a Rule 10b5-1 trading plan adopted by the officer on December 17, 2025. Following this transaction, he directly holds 51,439 shares of NPK International Inc. common stock.
NPK International Inc. (NPKI) director Robeson Rose M reported selling 10,000 shares of common stock on 2026-08-27 at a weighted average price of $13.4917 per share in open-market transactions. The sale was executed automatically under a Rule 10b5-1 trading plan adopted on May 27, 2026, leaving 215,147 shares held directly.
NPK International Inc. (NPKI) director Lewis Michael A reported selling 2,013 shares of common stock on August 17, 2026 at a weighted average price of $14.2599 per share. The transaction was executed automatically under a Rule 10b5-1 trading plan adopted on March 7, 2025, and left him holding 135,865 shares directly.
Pederson Kristen J. reported acquisition or exercise transactions in this Form 4 filing.
NPK International Inc. director Kristen J. Pederson received a grant of 6,614 shares of common stock on July 28, 2026, at a reported price of $0.0000 per share as a pro-rated portion of the non-employee director’s annual equity retainer. According to the report, these shares vest on the earlier of the first anniversary of the grant date or the day before the next annual stockholders meeting, and Pederson is shown as directly holding 6,614 shares following the award, subject to this vesting schedule.
NPK International Inc. executive Lori Briggs reported an open-market sale of company stock. On June 8, 2026, the VP & President, Ind. Solutions sold 8,325 shares of NPK International common stock at a weighted average price of $14.7495 per share.
The sale occurred automatically under a pre-arranged Rule 10b5-1 trading plan adopted on December 15, 2025. Following this transaction, Briggs directly holds 247,165 shares of NPK International common stock.
NPK International Inc. President & CEO Matthew Lanigan reported an open-market sale of 167,375 shares of common stock on June 3, 2026 at a weighted average price of $14.4341 per share. The sale was executed automatically under a Rule 10b5-1 trading plan adopted on March 4, 2026, indicating it was pre-scheduled rather than a discretionary trade.
Following the sale, Lanigan directly holds 254,699 shares of common stock and indirectly holds 770,249 shares through a trust. The filing does not show any derivative positions such as options or warrants remaining after this transaction.
NPK International Inc. vice president and general counsel Mary Celeste Fruge reported routine equity compensation activity involving restricted stock units. On June 1, 2026, she exercised RSUs that converted on a one-for-one basis into 17,274 shares of common stock at a stated price of $0.00 per share.
To cover tax obligations upon vesting, 15,848 shares of common stock were withheld by the company in several transactions at $14.31 per share, which the filing describes as payment of tax liabilities by delivering securities. After these transactions, Fruge directly held 267,367 shares of NPK International common stock, representing a net increase of 1,426 shares from this RSU vesting event. No open-market purchases or sales were reported, and there are no remaining RSUs from this grant after conversion.
NPK International Inc. President & CEO Matthew Lanigan reported compensation-related equity activity. On June 1, 2026, restricted stock units vested and converted into 100,188 shares of common stock, and 89,549 shares were withheld to cover tax obligations, resulting in a smaller net increase to his directly held shares. The filing also shows 770,249 common shares held indirectly through a trust, reflecting a substantial additional ownership position. These transactions reflect routine vesting and tax withholding rather than open-market purchases or sales.
NPK International Inc. Senior Vice President and CFO Gregg Piontek reported routine equity compensation activity involving restricted stock units and related tax withholding. On June 1, 2026, restricted stock units converted on a one-for-one basis into 40,379 shares of common stock. To satisfy tax withholding obligations upon this vesting, a total of 36,089 shares were delivered back at $14.31 per share, which is characterized as tax-withholding dispositions rather than open-market sales. After these transactions, Piontek holds 817,803 common shares directly and 65,000 common shares indirectly through an account, indicating a substantial remaining ownership position.
NPK International Inc. executive Lori Briggs reported compensation-related share activity and a small planned sale. On June 1, 2026, restricted stock units covering 24,340 shares vested and converted one-for-one into common stock, with 21,755 shares withheld to cover tax obligations. On June 2, 2026, she sold 10,446 shares of common stock in open-market transactions at a weighted average price of $14.5776 per share under a pre-established Rule 10b5-1 trading plan. Following these transactions, Briggs directly held 255,490 shares of NPK International common stock.
ROBESON ROSE M reported acquisition or exercise transactions in this Form 4 filing.
NPK International Inc. director Robeson Rose M received a grant of 10,862 shares of common stock, recorded at no purchase price, as equity compensation. Following this award, Rose holds 225,147 common shares directly. The granted shares will vest on the earlier of the first anniversary of the grant date or the day before the next annual stockholders meeting.
MINGE JOHN C reported acquisition or exercise transactions in this Form 4 filing.
NPK International Inc. director John C. Minge reported an equity award of 8,558 shares of Common Stock on May 20, 2026. The shares were granted at no cash cost and will vest on the earlier of the first anniversary of the grant date or the day prior to the next annual stockholders meeting. After this award, he directly holds 253,942 shares of NPK International common stock.
Meer Claudia Michel reported acquisition or exercise transactions in this Form 4 filing.
NPK International Inc. director Claudia Michel Meer received a grant of 8,558 shares of Common Stock. The award was granted at no cash price and increases her direct holdings to 126,693 shares after the transaction. The shares will vest on the earlier of the first anniversary of the grant date or the day prior to the next annual stockholders meeting, making this a routine equity compensation grant rather than an open-market purchase.
Lewis Michael A reported acquisition or exercise transactions in this Form 4 filing.
NPK International Inc. director Lewis Michael A received a grant of 8,558 shares of common stock. The grant was at no cash cost per share and increased his direct holdings to 137,878 shares. The shares will vest on the earlier of the first anniversary of the grant date or the day before the next annual stockholders meeting.
LARSON RODERICK A. reported acquisition or exercise transactions in this Form 4 filing.
NPK International Inc. director Roderick A. Larson received a grant of 8,558 shares of common stock at $0.00 per share. These shares will vest on the earlier of the first anniversary of the grant date or the day before the next annual stockholders meeting. After the grant, Larson holds 23,655 common shares directly and 233,651 shares indirectly through LFV, LP, for which he disclaims beneficial ownership except for his pecuniary interest.
CUTILLO JOSEPH A reported acquisition or exercise transactions in this Form 4 filing.
NPK International Inc. director Joseph A. Cutillo reported an equity compensation grant of 8,558 shares of common stock. The shares were awarded at no cash cost and increase his direct holdings to 36,155 shares.
The grant will vest on the earlier of the first anniversary of the grant date or the day before the next annual stockholders meeting, meaning the director does not receive full ownership benefits until that vesting condition is met.
Piontek Gregg reported acquisition or exercise transactions in this Form 4 filing.
NPK International Inc. reported that Senior Vice President and CFO Gregg Piontek received a grant of restricted stock units covering 34,566 shares of common stock. The award was granted at no cash cost per share and is a form of equity compensation rather than an open‑market purchase.
According to the terms, these restricted stock units vest in one-third increments on June 1 of each subsequent year after grant and will settle in shares of common stock. Following this grant, Piontek directly holds 853,892 shares, and a separate entry shows 65,000 shares of common stock held indirectly through an IRA and trust.
LANIGAN MATTHEW reported acquisition or exercise transactions in this Form 4 filing.
NPK International Inc. reported that President & CEO Matthew Lanigan received a grant of 85,771 shares of common stock as a restricted stock unit award at a price of $0.0000 per share. These restricted stock units vest in one-third increments on June 1 of each subsequent year after the grant and settle in shares. Following this award, Lanigan directly holds 411,435 common shares, and an additional 770,249 common shares are held indirectly by a trust.
NPK International Inc. reported that VP and General Counsel Mary Celeste Fruge acquired 18,002 shares of common stock through a grant of restricted stock units. These units vest in one-third increments on June 1 of each subsequent year after the grant and settle in shares. Following this compensation award, she holds 283,215 shares directly.
Briggs Lori reported acquisition or exercise transactions in this Form 4 filing.
NPK International Inc. reported that executive Lori Briggs, VP & President, Industrial Solutions, received a grant of 20,838 shares of Common Stock in the form of restricted stock units at no cash purchase price. These units vest in one-third installments on June 1 of each year after the grant and settle in shares. Following this award, Briggs directly holds 263,351 shares of NPK International common stock, reflecting a routine equity compensation grant rather than an open-market transaction.
NPK International Inc. director Lewis Michael A reported an open-market sale of 2,013 shares of Common Stock at a weighted average price of $15.3017 per share on May 15, 2026. The sale was executed automatically under a Rule 10b5-1 trading plan adopted on March 7, 2025, and he held 129,320 shares afterward.
NPK International Inc. Senior Vice President and CFO Gregg Piontek sold 15,000 shares of Common Stock in an open-market transaction at a weighted average price of $15.045 per share. The sale was executed automatically under a Rule 10b5-1 trading plan adopted on December 3, 2025. Following the sale, he directly holds 819,326 shares and also has 65,000 shares held indirectly through an IRA.
NPK International Inc. Senior Vice President and CFO Gregg Piontek reported an open-market sale of 35,000 shares of common stock at a weighted average price of $14.5104 per share. The sale occurred on April 1, 2026 under a pre-arranged Rule 10b5-1 trading plan adopted on December 3, 2025.
After this transaction, Piontek directly held 834,326 shares of common stock. A separate entry shows 65,000 shares of common stock held indirectly, described as held by an IRA with a footnote stating these shares are indirectly held by a trust.
NPK International Inc. Senior Vice President and CFO Gregg Piontek reported an open‑market sale of 15,000 shares of common stock on March 25, 2026 at a weighted average price of $15.0256 per share, with trades executed between $15.00 and $15.12.
The transaction was carried out automatically under a pre‑arranged Rule 10b5‑1 trading plan adopted on December 3, 2025. Following this sale, Piontek directly holds 869,326 shares and indirectly holds 65,000 shares through an IRA.
NPK International Inc. vice president and general counsel Mary Celeste Fruge exercised options for 1,000 shares of common stock at $4.32 per share and immediately sold the 1,000 shares in an open-market transaction at $13.56 per share. After these transactions, she directly holds 265,213 common shares. The exercise and sale were carried out automatically under a pre-arranged Rule 10b5-1 trading plan adopted on December 5, 2025, indicating a scheduled liquidity event rather than a discretionary trade.
NPK International Inc. vice president and general counsel Mary Celeste Fruge exercised stock options and immediately sold the resulting shares. She exercised options for 11,193 shares of common stock at an exercise price of $4.32 per share, then sold the same 11,193 shares in open-market transactions at a weighted average price of $13.339 per share.
The filing states that both the option exercise and share sale occurred automatically under a Rule 10b5-1 trading plan adopted on December 5, 2025. After these transactions, Fruge directly holds 265,213 shares of NPK International common stock.
NPK International Inc. Senior Vice President and CFO Gregg Piontek reported option exercises and share sales in the company’s stock. On March 4, 2026, he exercised 73,590 non-qualified stock options, acquiring the same number of common shares at a stated exercise price of $4.32 per share. He then sold 73,590 shares at a weighted average price of $14.0979 and a further 35,000 shares at a weighted average price of $14.0169 in open-market transactions. The filing notes that both the option exercise-related sale and the separate 35,000-share sale occurred automatically under a Rule 10b5-1 trading plan adopted on December 3, 2025. Following these transactions, Piontek directly holds 884,326 common shares and indirectly holds 65,000 shares through a trust/IRA arrangement.
NPK International Inc. director Lewis Michael A reported an open-market sale of 2,013 shares of common stock on February 23, 2026. The shares were sold at a weighted average price of $14.3052 per share under a pre-arranged Rule 10b5-1 trading plan. After this transaction, he directly held 131,333 shares of NPK International common stock.
NPK International Inc. VP and General Counsel M. Celeste Fruge filed an amended insider report to correct a prior clerical error related to restricted stock units. On June 1, 2025, vested restricted stock units converted into 17,274 shares of common stock at a stated price of $0.0 per share, reported with transaction code M. The amendment clarifies that a previous filing on June 3, 2025 mistakenly reported 17,247 shares instead of 17,274.
After this transaction, Fruge beneficially owned 265,213 shares of common stock directly and 17,274 restricted stock units directly. The restricted stock units were granted to vest in one-third increments on June 1 of each subsequent year after grant and settle in shares.
NPK International Inc. (NPKI) director transaction reported
A director of NPK International Inc. reported an automatic sale of 2,013 shares of common stock on 11/24/2025 under a pre-arranged Rule 10b5-1 trading plan adopted on March 7, 2025. The weighted average sale price was $12.0001 per share, with individual trades executed between $11.65 and $12.13.
Following this transaction, the reporting person beneficially owns 133,346 shares of NPK International common stock in direct ownership. The transaction was filed on a Form 4 as a routine insider ownership update.
NPK International Inc. (NPKI) insider Matthew Lanigan, who serves as President, CEO and a director, reported a transfer of 770,249 shares of common stock on 10/03/2025. The filing states the transfer was a gift to his living trust; the trust lists Mr. Lanigan and his spouse as trustees. Following the reported transaction, Mr. Lanigan directly beneficially owns 325,664 shares and the trust is shown as holding 770,249 shares indirectly. The form was signed on 10/06/2025 and records the transaction price as $0.0, consistent with an intra-family trust transfer.