Insider · CIK 0002152870
Matthew James Warren
Files at NPKI (NPK International Inc.). First filing Sep 10, 2026, latest Sep 10, 2026.
Matthew James Warren files SEC Form 4 as officer at NPKI (NPK International Inc.). Since Sep 10, 2026, Matthew James Warren has reported 0 open-market buys worth $0 and 1 open-market sell worth $40k, the latest filed on Sep 10, 2026.
A track record needs three past buys with six months of prices behind them; Matthew James Warren has 0, so none is measured yet.
The newest scored trade: sold $40k of NPKI on Sep 9, 2026, filed Sep 10, 2026, scored 1 (weak), under a 10b5-1 plan. In the last 12 months: 0 buys worth $0 and 1 sell worth $40k.
Where the trades landed
Last year at the company this insider has traded most, with each buy and sell on the bar it happened.
NPKI: NPK International Inc.
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™
Signals
This insider’s open-market buys and sells, scored.
| Score | Company | Value | Holdings | Price context | Filed |
|---|---|---|---|---|---|
| 1Weak | NPK International Inc. | $40k 2,991 shares | -5% | - |
Transactions
Every row this insider has filed, 1 in all, newest first.
| Date | Company | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Sep 9, 2026 | NPKI NPK International Inc. | SOpen-market sale Common Stock10b5-1 | -2,991 | $13.41 | $40k | 51,439 | 33 d ago |
Questions about Matthew James Warren
Answered from the filings on this page, as of the latest one.
Is Matthew James Warren buying or selling?
In the last 12 months Matthew James Warren reported 0 open-market buys worth $0 and 1 open-market sell worth $40k on SEC Form 4; the latest was sold $40k of NPKI on Sep 9, 2026. Grants, option exercises and tax withholding are not counted.
How did Matthew James Warren's past buys perform?
Not measured yet. InsiderTell needs three past buys with six months of prices to publish a track record, and Matthew James Warren has 0.
Where does Matthew James Warren file Form 4?
Matthew James Warren has filed Form 4 at NPKI (NPK International Inc.) as Chief Accounting Officer. A Form 4 is required of officers, directors and holders of more than 10% of a share class within two business days of a trade.
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.