Piontek Gregg — SEC Form 4 filings
SEC reporting owner CIK 1418328. 10 Form 4 filings on record with FilingPulse; latest filed 2026-06-03.
Transaction summary — filings shown
Covers all 10 filings on record, filed 2024-05-17 to 2026-06-03. Counts and totals are arithmetic on values as filed — descriptive data, not a recommendation.
- Open-market purchases (code P, non-derivative): none reported.
- Open-market sales (code S, non-derivative): 5 legs across 4 filings — 173,590 shares, $2,486,979 total (shares × price as filed).
- Other reported legs (grants, option exercises, tax withholding, gifts, derivative-security transactions, …): 26.
- Largest priced transaction: sale of 73,590 shares @ $14.10 ($1,037,464) in NPK International Inc., filed 2026-03-05.
By issuer — same filings
Open-market purchase/sale legs on non-derivative securities, grouped by issuer. Role is as filed on the newest filing for that issuer. Dollar totals cover priced legs only (shares × price as filed). Ordered by priced transaction value, largest first.
| Issuer | Role (as filed) | Filings | Purchases (P) | Sales (S) | Other legs |
|---|---|---|---|---|---|
| NPK International Inc. (NPKI) | Senior Vice President and CFO | 10 | — | 5 legs · 173,590 sh · $2,486,979 | 26 |
Form 4 filings — Piontek Gregg
| Filed | Form | Issuer | Reported transactions | Source |
|---|---|---|---|---|
| 2026-06-03 | 4 | NPK International Inc. (NPKI) | Tax withholding (F): 8,959 @ $14.31 · Tax withholding (F): 15,889 @ $14.31 · Tax withholding (F): 11,241 @ $14.31 · Option exercise (M): 40,379 @ $0 · Option exercise (M): 40,379 (derivative) @ $0 | EDGAR |
| 2026-05-21 | 4 | NPK International Inc. (NPKI) | Grant/award (A): 34,566 @ $0 | EDGAR |
| 2026-04-10 | 4 | NPK International Inc. (NPKI) | Sale (S): 15,000 @ $15.04 | EDGAR |
| 2026-04-03 | 4 | NPK International Inc. (NPKI) | Sale (S): 35,000 @ $14.51 | EDGAR |
| 2026-03-26 | 4 | NPK International Inc. (NPKI) | Sale (S): 15,000 @ $15.03 | EDGAR |
| 2026-03-05 | 4 | NPK International Inc. (NPKI) | Option exercise (M): 73,590 @ $4.32 · Sale (S): 73,590 @ $14.10 · Sale (S): 35,000 @ $14.02 · Option exercise (M): 73,590 (derivative) @ $0 | EDGAR |
| 2025-06-03 | 4 | NPK International Inc. (NPKI) | Option exercise (M): 43,790 @ $0 · Tax withholding (F): 17,231 @ $8.09 · Tax withholding (F): 15,889 @ $8.09 · Tax withholding (F): 8,959 @ $8.09 · Option exercise (M): 40,379 @ $0 · Option exercise (M): 43,790 (derivative) @ $0 · +1 more | EDGAR |
| 2025-05-16 | 4 | NPK International Inc. (NPKI) | Grant/award (A): 85,706 @ $0 | EDGAR |
| 2024-06-04 | 4 | NEWPARK RESOURCES INC (NR) | 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 |
| 2024-05-17 | 4 | NEWPARK RESOURCES INC (NR) | Grant/award (A): 68,308 @ $0 | EDGAR |
FilingPulse's Form 4 archive currently extends back to 2024-01-11 and is expanding backward through EDGAR history — earlier filings by this insider may not be indexed yet. Names and roles are shown as filed.
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