Insider Profile · SEC Form 4 Activity · Trailing 90 Days
Piontek Gregg
Over the trailing 90 days, Piontek Gregg (Other Officer at NPK International Inc.) sold $516K of stock in NPKI, per 6 SEC Form 4 transactions.
- Role
- Other Officer
- Companies
- NPKI
- Window
- Trailing 90 days · 6 transactions · CIK 1418328
- Net activity
- −$516K ($0 bought · $516K sold)
By Company (Trailing 90 Days)
| Symbol | Company | Txns | Bought | Sold | Net |
|---|---|---|---|---|---|
| NPKI | NPK International Inc. | 6 | — | $516K | −$516K |
Transactions (6)
| Date | Symbol | Type | Shares | Value | Description |
|---|---|---|---|---|---|
| 2026-06-01 | NPKI | Sell | 11.2K | $161K | Payment of exercise price or tax liability by delivering securities |
| 2026-06-01 | NPKI | Sell | 9.0K | $128K | Payment of exercise price or tax liability by delivering securities |
| 2026-06-01 | NPKI | Sell | 15.9K | $227K | Payment of exercise price or tax liability by delivering securities |
| 2026-06-01 | NPKI | Buy | 40.4K | $0 | Exercise or conversion of derivative security |
| 2026-06-01 | NPKI | Sell | 40.4K | $0 | Exercise or conversion of derivative security |
| 2026-05-19 | NPKI | Buy | 34.6K | $0 | Grant, award or other acquisition |
Activity shown covers the trailing 90 days of SEC Form 4 filings. "Buy" and "sell" follow the SEC acquired/disposed codes and include compensation events (grants, option exercises, tax withholding) unless noted. Historical fact, not investment advice.
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