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NPK International Inc. (NYSE: NR) CEO exercises options, sells 68,896 shares

Filing Impact
(Very High)
Filing Sentiment
(Positive)
Form Type
4

Rhea-AI Filing Summary

NPK International Inc. reports that President & CEO Matthew Lanigan exercised non-qualified stock options for 68,896 shares of common stock at $4.3200 per share and, on the same date, sold 68,896 shares at a weighted-average price of $10.3422 under a Rule 10b5-1 trading plan adopted on May 23, 2025. Following these transactions, he holds 1,095,913 shares of common stock directly.

Positive

  • None.

Negative

  • None.

Insights

TL;DR: CEO exercised options and sold the resulting 68,896 shares under a pre-established 10b5-1 plan; ownership decreased by 68,896 shares.

The filing shows a routine insider exercise and concurrent open-market sale executed under a documented Rule 10b5-1 plan adopted May 23, 2025. The exercise price of the options was $4.32 and the weighted average sale price was $10.3422, producing a clear spread between exercise and sale prices. The disclosure includes an undertaking to provide per-price sale details, improving transparency. This transaction does not by itself reveal operational or financial performance changes beyond insider liquidity.

TL;DR: Insider sales were processed under a 10b5-1 plan, indicating pre-planned disposals and adherence to insider-trading controls.

The report identifies the reporting person as both President & CEO and a director, and confirms the trades were made pursuant to a 10b5-1 plan, which mitigates concerns about opportunistic timing. The form discloses exercise and sale details, the options’ original grant/exercise timeline, and the post-transaction share counts, which supports robust disclosure practices for insiders.

Insider LANIGAN MATTHEW
Role President & CEO
Sold 68,896 shs ($713K)
Approx. gross sale proceeds $713K
Approx. exercise cost $298K
Approx. pre-tax spread $415K
Type Security Shares Price Value
Exercise Non-Qualified Stock Option (right to buy) 68,896 $10.3422 $713K
Exercise Common Stock 68,896 $4.32 $298K
Sale Common Stock 68,896 $10.3422 $713K
Holdings After Transaction: Non-Qualified Stock Option (right to buy) — 1,000 shares (Direct); Common Stock — 1,095,913 shares (Direct)
Footnotes (2)
  1. F1. The reported sale of 68,896 shares occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 23, 2025.
  2. F2. The price reported is the weighted average price. These shares were sold in multiple transactions in the open market at prices ranging from $9.97 to $10.42, inclusive. The reporting person undertakes to provide to NPK International Inc., any security holder of NPK International Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in footnote (2) to this Form 4.
Shares exercised 68,896 shares Non-qualified stock options exercised into common stock on 2025-08-22
Shares sold 68,896 shares Common stock sale on 2025-08-22 under a Rule 10b5-1 trading plan
Exercise price $4.3200 per share Strike price of non-qualified stock options exercised by Matthew Lanigan
Weighted-average sale price $10.3422 per share Average price across multiple open-market sales between $9.97 and $10.42
Sale price range $9.97 to $10.42 per share Range of individual transaction prices for the 68,896 shares sold
Rule 10b5-1 plan adoption date May 23, 2025 Date Lanigan adopted the trading plan covering the reported share sale
Post-transaction holdings 1,095,913 shares Common stock held directly by Matthew Lanigan after these transactions
Non-Qualified Stock Option financial
"Non-Qualified Stock Option (right to buy) reported as derivative."
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.
Rule 10b5-1 trading plan regulatory
"Occurred automatically pursuant to a Rule 10b5-1 trading plan adopted."
A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.
weighted average price financial
"The price reported is the weighted average price for the sale."
Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.
derivative security financial
"Transaction code description: Exercise or conversion of derivative security."
A derivative security is a financial contract whose value comes from the price or performance of something else, such as a stock, bond, commodity, or market index. For investors it acts like an insurance policy or a wager: it can be used to protect against losses, lock in prices, or amplify gains and losses, so it can change a portfolio’s risk and potential return without owning the underlying asset directly.

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

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FAQ

What transactions did NPK International Inc. (NR) CEO Matthew Lanigan report?
Matthew Lanigan exercised options for 68,896 shares and sold the same number of common shares. Both events occurred on August 22, 2025, with the options exercised at $4.3200 per share and the sales executed at a weighted-average price of $10.3422.

At what prices did Lanigan trade NPK International Inc. (NR) shares?
He exercised options at $4.3200 per share and sold shares at a weighted-average $10.3422. The sale price reflected multiple open-market trades, with individual transaction prices ranging between $9.97 and $10.42 per share.

How many NPK International Inc. (NR) shares does Matthew Lanigan hold after these trades?
After the reported transactions, Matthew Lanigan holds 1,095,913 shares of common stock directly. This post-transaction holding reflects his remaining direct ownership following the option exercise and the sale of 68,896 shares on August 22, 2025.

Was the NPK International Inc. (NR) CEO’s share sale under a Rule 10b5-1 plan?
Yes. The sale of 68,896 shares occurred automatically under a Rule 10b5-1 trading plan. The footnote states the plan was adopted by Matthew Lanigan on May 23, 2025, and governed the August 22, 2025 transactions.

What type of options did NPK International Inc. (NR) CEO exercise?
Lanigan exercised non-qualified stock options, each giving a right to buy common stock. These options had a conversion or exercise price of $4.3200 per share and an expiration date of May 19, 2026, with the underlying 68,896 shares of common stock delivered upon exercise.
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).
X
 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*
LANIGAN MATTHEW
(Last) (First) (Middle)
9320 LAKESIDE BOULEVARD
SUITE 100
(Street)
THE WOODLANDS TX 77381
(City) (State) (Zip)
2. Issuer Name and Ticker or Trading Symbol
NPK International Inc. [ NPKI ] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
X Director 10% Owner
X Officer (give title below) Other (specify below)
President & CEO
3. Date of Earliest Transaction (Month/Day/Year)
08/22/2025
4. If Amendment, Date of Original Filed (Month/Day/Year)
 6. Individual or Joint/Group Filing (Check Applicable Line)
X Form filed by One Reporting Person
Form filed by More than One Reporting Person
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)
Code V Amount (A) or (D) Price
Common Stock 08/22/2025 M 68,896(1) A $4.32 1,164,809 D
Common Stock 08/22/2025 S 68,896 D $10.3422(2) 1,095,913 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)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Non-Qualified Stock Option (right to buy) $4.32 08/22/2025 M 68,896(1) 06/01/2019 05/19/2026 Common Stock 68,896 $10.3422 1,000 D
Explanation of Responses:
1. The reported sale of 68,896 shares occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 23, 2025.
2. The price reported is the weighted average price. These shares were sold in multiple transactions in the open market at prices ranging from $9.97 to $10.42, inclusive. The reporting person undertakes to provide to NPK International Inc., any security holder of NPK International Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in footnote (2) to this Form 4.
By: M. Celeste Fruge For: Matthew Lanigan 08/26/2025
** 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.

Source: View Original Filing on SEC EDGAR