SEC Form 4 · accession 0001423238-26-000010
NPK International Inc. · NPKI
Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗
Reporting owner
Michael A Lewis
Director
Period of report
Aug 17, 2026
Accepted (ET)
Aug 19, 2026 · 4:14 pm EDT
Rule 10b5-1 plan
yes — trade under a plan
Issuer CIK
0000071829
Table I — non-derivative securities
| Security | Date | Code | Shares | Price | A/D | Owned after | D/I | Nature of ownership |
|---|---|---|---|---|---|---|---|---|
| Common StockF1,F2 | Aug 17, 2026 | S | 2,013 | $14.2599 | D | 135,865 | D |
Table II — derivative securities
No Table II lines on this filing.
Explanation of responses
- F1The 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.
- F2The price reported is the weighted average price. These shares were sold in multiple transactions in the open market at prices ranging from $14.15 to $14.40, 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.