Michael A. Lewis - Aug 25, 2025 Form 4 Insider Report for NPK International Inc. (NPKI)

Role
Director
Signature
By: M. Celeste Fruge For: Michael A. Lewis
Stock symbol
NPKI
Transactions as of
Aug 25, 2025
Transactions value $
-$20,797
Form type
4
Date filed
8/26/2025, 05:22 PM
Previous filing
Jul 22, 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Lewis Michael A Director 9320 LAKESIDE BOULEVARD, SUITE 100, THE WOODLANDS By: M. Celeste Fruge For: Michael A. Lewis 2025-08-26 0001423238

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction NPKI Common Stock Sale -$20.8K -2.01K -1.47% $10.33 135K Aug 25, 2025 Direct F1, F2
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Buy Plan / Sale Plan: These are also open market purchases/sales of shares, but in this case the transaction is part of a trading plan. Rule 10b5-1 allows insiders to setup a trading plan to buy/sell stocks over a certain period of time. Since the purchases/sales are predetermined, this protects the insiders from violating insider trading law.

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).

Explanation of Responses:

Id Content
F1 The reported sale of 2,013 shares occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 7, 2025.
F2 The price reported is the weighted average price. These shares were sold in multiple transactions in the open market at prices ranging from $10.29 to $10.40, 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.