Matthew James Warren
CIK: 0002152870
Transaction Breakdown
Open Market Buys (P)0 (0.0%)
High conviction signal
Open Market Sales (S)1 (100.0%)
Position reduction
Option Exercises (M)0 (0.0%)
Derivative conversions
Awards (A)0 (0.0%)
Compensation grants
Other (G, F, J, C, D, …)0 (0.0%)
Gifts, tax withholding, conversions, dispositions to the issuer and other codes
Companies & Roles (1)
NPKI
NPK International Inc.
Officer
Discretionary Trading P&L
Holdings
About Warren Matthew James
Warren Matthew James (SEC CIK 0002152870) files insider reports with the SEC as Chief Accounting Officer of NPK International Inc. (NPKI).
Signal8 holds 2 ownership filings by Warren Matthew James (1 Form 3, 1 Form 4), filed between Sep 8, 2026 and Sep 10, 2026. Those filings report 1 transaction, the latest on Sep 9, 2026. Signal8's Form 4 history starts in Sep 2024.
The business address on Warren Matthew James's filings is in THE WOODLANDS, TX.
Recent filings by Warren Matthew James
- Sep 9, 2026: Open-market sale of NPKI shares (Form 4, code S).
Other insiders filing for NPK International Inc. (NPKI)
- Barton III Alvin James, EVP Commercial Growth & Ops.
- ROBESON ROSE M, Director
- Lewis Michael A, Director
- Pederson Kristen J., Director
- Briggs Lori, VP & President, Ind. Solutions
- LANIGAN MATTHEW, President & CEO