NPK International Inc. (NPKI) ownership: insiders 4% · institutions 92% (13F 2026-03-31). Insider activity, 90 days: Routine (2 sales, 0 open-market buys). SEC EDGAR first-party data.
| Holder | Shares | Market Value | % Outstanding | Reported |
|---|---|---|---|---|
| BlackRock | 7202705.00 | $104.37M | 8.5% | 2026-03-31 |
| Ameriprise (Columbia) | 5623552.00 | $81.49M | 6.6% | 2026-03-31 |
| Vanguard | 4955147.00 | $71.80M | 5.8% | 2026-03-31 |
| Dimensional Fund Advisors | 3983658.00 | $57.72M | 4.7% | 2026-03-31 |
| American Century | 3043763.00 | $44.10M | 3.6% | 2026-03-31 |
| Wasatch Advisors LP | 2899021.00 | $42.01M | 3.4% | 2026-03-31 |
| Geode Capital Management | 2244164.00 | $32.52M | 2.6% | 2026-03-31 |
| Royce & Associates LP | 2071010.00 | $30.01M | 2.4% | 2026-03-31 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Sell | null | 2026-08-17 | |
| Sell | null | 2026-07-28 | |
| Sell | null | 2026-06-02 | |
| Buy | null | 2026-06-01 | |
| Buy | null | 2026-06-01 | |
| Buy | null | 2026-06-01 | |
| Sell | null | 2026-06-01 | |
| Buy | null | 2026-06-01 |
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Institutional data from SEC Form 13F. Insider data from SEC Form 4. Congressional data from STOCK Act disclosures. Not personalized investment advice.