Lewis Michael A (CIK 1423238) reported 9 SEC Form 4 insider transactions across 2 companies over the past 18 months (most recent 2026-05-21). Recent activity: Buy NPKI (8,558 shares), Sell NPKI (2,013 shares), Sell NPKI (2,013 shares), Sell NPKI (2,013 shares), Sell NPKI (2,013 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-05-21 | NPK International Inc. (NPKI) | Director | Buy | 8,558 | $0 |
| 2026-05-19 | NPK International Inc. (NPKI) | Director | Sell | 2,013 | $30,802 |
| 2026-02-25 | NPK International Inc. (NPKI) | Director | Sell | 2,013 | $28,806 |
| 2025-11-25 | NPK International Inc. (NPKI) | Director | Sell | 2,013 | $24,156 |
| 2025-08-26 | NPK International Inc. (NPKI) | Director | Sell | 2,013 | $20,794 |
| 2025-07-22 | PORTLAND GENERAL ELECTRIC CO /OR/ (POR) | Director | Sell | 1,937 | $77,674 |
| 2025-07-21 | PORTLAND GENERAL ELECTRIC CO /OR/ (POR) | Director | Buy | 3,873 | $154,997 |
| 2025-06-17 | NPK International Inc. (NPKI) | Director | Sell | 2,013 | $17,312 |
| 2025-05-19 | NPK International Inc. (NPKI) | Director | Buy | 15,097 | $0 |
Source: SEC Form 4 filings · as of 2026-05-21