VANGUARD GROUP INC 13D and 13G filings for NPK International Inc.:
- Schedule 13D must be filed within ten days after a person or an organization acquires beneficial ownership of more than 5% of a voting class of a company's equity securities.
- Shares have been adjusted for stock splits.
| Reported DateTime | Transaction Date | Type | Company Symbol | Filed By Symbol | Shares Owned % Owned | Shares Vs. Prev Report | View |
| 2026-03-27 11:09 am Sale | 2026-03-13 | 13G | NPK INTERNATIONAL INC. NPKI | VANGUARD GROUP INC | 0 0.000% | -4,761,308 (Position Closed) | Filing |
| 2024-02-13 5:09 pm Purchase | 2023-12-29 | 13G | NPK INTERNATIONAL INC. NPKI | VANGUARD GROUP INC | 4,761,308 5.600% | 596,618 (+14.33%) | Filing |
| 2023-02-09 11:27 am Sale | 2022-12-30 | 13G | NPK INTERNATIONAL INC. NPKI | VANGUARD GROUP INC | 4,164,690 4.430% | -572,649 (-12.09%) | Filing |
| 2022-02-10 08:28 am Purchase | 2021-12-31 | 13G | NPK INTERNATIONAL INC. NPKI | VANGUARD GROUP INC | 4,737,339 5.130% | 675,136 (+16.62%) | Filing |