Quick Takeaways
- DIMENSIONAL FUND ADVISORS LP filed SCHEDULE 13G/A for NPK International Inc Common Stock (NPKI).
- Disclosed ownership: 4.7%.
- Date of event: 31 Mar 2026.
DIMENSIONAL FUND ADVISORS LP - 31 Mar 2026 SCHEDULE 13G/A Report for NPK International Inc Common Stock (NPKI)
- Filing Manager
- DIMENSIONAL FUND ADVISORS LP
- Reporting Manager
- Dimensional Fund Advisors LP
- Security
- NPK International Inc Common Stock
- Symbol
- NPKI
- Shares outstanding
- 84,758,681 shares
- Disclosed Ownership
- 3,983,658 shares
- Ownership
- 4.7%
- Form type
- SCHEDULE 13G/A
- Filing time
- 09 Apr 2026, 13:42:20 UTC
- Date of event
- 31 Mar 2026
- Previous filing
- 09 Oct 2025
- SEC
- View on sec.gov
Quoteable Key Fact
"DIMENSIONAL FUND ADVISORS LP disclosed 4.7% ownership in NPK International Inc Common Stock (NPKI) on 31 Mar 2026."
What Changed
- Previous schedule filing date: 09 Oct 2025.
- Current filing was accepted on 09 Apr 2026, 13:42.
Why This Matters
- This page explains what this Schedule 13D/13G filing tells you before manager-level rows.
- You can verify ownership claims directly against the original SEC filing.
Official SEC Source
Backed by Schedule 13D/13G
Beneficial ownership values are sourced from the original SEC Schedule 13D/13G filing.
See Original FilingReporting Managers (1)
| Name | Ownership | Shares Owned | sole voting power | shared voting power | Signature | Title | CIK |
|---|---|---|---|---|---|---|---|
| Dimensional Fund Advisors LP | 4.7% | 3,983,658 | 3,900,044 | 0 | Selwyn Notelovitz | Global Chief Compliance Officer |