NR insider transaction filings
NPK International Inc. — 11 most recent Form 4 filings from SEC EDGAR, normalized by FilingPulse. Latest filing: 2024-12-17. Screen NR transaction legs live →
Insider transaction summary — last 90 days
No Form 4 filings for NR between 2026-06-11 and 2026-09-09. The table below lists the most recent filings on record.
Recent Form 4 filings — NPK International Inc.
| Filed | Form | Insider | Reported transactions | Source |
|---|---|---|---|---|
| 2024-12-17 | 4 | WHITE DOUGLAS L — VP, CAO & Treasurer | Grant/award (A): 722 @ $6.58 | EDGAR |
| 2024-09-04 | 4 | Briggs Lori — VP & President, Ind. Solutions | Option exercise (M): 16,666 @ $0 · Tax withholding (F): 6,558 @ $8.23 · Option exercise (M): 16,666 (derivative) @ $0 | EDGAR |
| 2024-09-04 | 4 | LANIGAN MATTHEW — President & CEO, Director | Option exercise (M): 33,333 @ $0 · Tax withholding (F): 13,116 @ $8.23 · Option exercise (M): 33,333 (derivative) @ $0 | EDGAR |
| 2024-06-17 | 4 | Briggs Lori — VP & President, Ind. Solutions | Grant/award (A): 1,378 @ $5.98 | EDGAR |
| 2024-06-17 | 4 | WHITE DOUGLAS L — VP, CAO & Treasurer | Grant/award (A): 841 @ $5.98 | EDGAR |
| 2024-06-04 | 4 | Fruge Mary Celeste — VP, General Counsel | Option exercise (M): 17,274 @ $0 · Tax withholding (F): 6,820 @ $8.48 · Tax withholding (F): 6,797 @ $8.48 · Tax withholding (F): 6,296 @ $8.48 · Option exercise (M): 17,274 (derivative) @ $0 | EDGAR |
| 2024-06-04 | 4 | Briggs Lori — VP & President, Ind. Solutions | Option exercise (M): 16,000 @ $0 · Option exercise (M): 26,396 @ $0 · Option exercise (M): 24,341 @ $0 · Tax withholding (F): 9,578 @ $8.48 · Tax withholding (F): 6,296 @ $8.48 · Tax withholding (F): 10,386 @ $8.48 · +3 more | EDGAR |
| 2024-06-04 | 4 | PATERSON DAVID A — VP & President, Fluids Systems | Option exercise (M): 35,788 @ $0 · Option exercise (M): 30,620 @ $0 · Option exercise (M): 28,235 @ $0 · Tax withholding (F): 7,455 @ $8.48 · Tax withholding (F): 8,714 @ $8.48 · Tax withholding (F): 8,008 @ $8.48 · +3 more | EDGAR |
| 2024-06-04 | 4 | LANIGAN MATTHEW — President & CEO, Director | Option exercise (M): 37,090 @ $0 · Option exercise (M): 108,651 @ $0 · Option exercise (M): 100,189 @ $0 · Tax withholding (F): 39,424 @ $8.48 · Tax withholding (F): 42,754 @ $8.48 · Tax withholding (F): 14,594 @ $8.48 · +3 more | EDGAR |
| 2024-06-04 | 4 | WHITE DOUGLAS L — VP, CAO & Treasurer | Option exercise (M): 18,666 @ $0 · Option exercise (M): 17,333 @ $0 · Option exercise (M): 14,667 @ $0 · Tax withholding (F): 3,571 @ $8.48 · Tax withholding (F): 4,220 @ $8.48 · Tax withholding (F): 4,545 @ $8.48 · +3 more | EDGAR |
| 2024-06-04 | 4 | Piontek Gregg — Senior Vice President and CFO | Option exercise (M): 51,181 @ $0 · Option exercise (M): 43,790 @ $0 · Option exercise (M): 40,380 @ $0 · Tax withholding (F): 15,889 @ $8.48 · Tax withholding (F): 17,231 @ $8.48 · Tax withholding (F): 20,139 @ $8.48 · +3 more | EDGAR |
Recent 8-K events — NPK International Inc.
| Filed | Form | Items reported | Source |
|---|---|---|---|
| 2026-09-02 | 8-K | 5.02 — Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-07-30 | 8-K | 7.01 — Regulation FD Disclosure 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-07-29 | 8-K | 2.02 — Results of Operations and Financial Condition 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-07-28 | 8-K | 5.02 — Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-05-20 | 8-K | 5.07 — Submission of Matters to a Vote of Security Holders 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-05-01 | 8-K | 7.01 — Regulation FD Disclosure 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-04-30 | 8-K | 2.02 — Results of Operations and Financial Condition 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-02-26 | 8-K | 7.01 — Regulation FD Disclosure 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-02-25 | 8-K | 2.02 — Results of Operations and Financial Condition 9.01 — Financial Statements and Exhibits | EDGAR |
| 2025-11-24 | 8-K | 1.01 — Entry into a Material Definitive Agreement 2.01 — Completion of Acquisition or Disposition of Assets 7.01 — Regulation FD Disclosure 9.01 — Financial Statements and Exhibits | EDGAR |
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