8 Rivers Capital, LLC (CIK 1981100) reported 74 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-09-10). Recent activity: Sell NPWR (100,000 shares), Sell NPWR (150,000 shares), Sell NPWR (201,550 shares), Sell NPWR (41,350 shares), Sell NPWR (50,000 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-09-10 | Net Power Inc. (NPWR) | 10% Owner | Sell | 100,000 | $193,520 |
| 2026-09-10 | Net Power Inc. (NPWR) | 10% Owner | Sell | 150,000 | $276,075 |
| 2026-08-27 | Net Power Inc. (NPWR) | 10% Owner | Sell | 201,550 | $384,255 |
| 2026-08-27 | Net Power Inc. (NPWR) | 10% Owner | Sell | 41,350 | $79,078 |
| 2026-08-14 | Net Power Inc. (NPWR) | 10% Owner | Sell | 50,000 | $81,575 |
| 2026-08-14 | Net Power Inc. (NPWR) | 10% Owner | Sell | 200,000 | $323,840 |
| 2026-08-14 | Net Power Inc. (NPWR) | 10% Owner | Sell | 507,100 | $990,518 |
| 2026-08-11 | Net Power Inc. (NPWR) | 10% Owner | Sell | 60,345 | $92,080 |
| 2026-08-11 | Net Power Inc. (NPWR) | 10% Owner | Sell | 55,400 | $86,075 |
| 2026-08-11 | Net Power Inc. (NPWR) | 10% Owner | Sell | 35,000 | $55,990 |
| 2026-08-06 | NET Power Inc. (NPWR) | 10% Owner | Sell | 89,255 | $134,436 |
| 2026-08-06 | NET Power Inc. (NPWR) | 10% Owner | Sell | 140,000 | $211,456 |
| 2026-08-06 | NET Power Inc. (NPWR) | 10% Owner | Sell | 120,000 | $184,728 |
| 2026-07-30 | NET Power Inc. (NPWR) | 10% Owner | Sell | 55,858 | $82,229 |
| 2026-07-30 | NET Power Inc. (NPWR) | 10% Owner | Sell | 45,000 | $63,328 |
| 2026-07-30 | NET Power Inc. (NPWR) | 10% Owner | Sell | 155,000 | $221,402 |
| 2026-07-23 | NET Power Inc. (NPWR) | 10% Owner | Sell | 80,000 | $122,400 |
| 2026-07-23 | NET Power Inc. (NPWR) | 10% Owner | Sell | 90,000 | $137,322 |
| 2026-07-23 | NET Power Inc. (NPWR) | 10% Owner | Sell | 39,142 | $58,971 |
| 2026-05-14 | NET Power Inc. (NPWR) | 10% Owner | Sell | 400,000 | $976,000 |
| 2026-05-14 | NET Power Inc. (NPWR) | 10% Owner | Sell | 35,000 | $85,050 |
| 2026-05-13 | NET Power Inc. (NPWR) | 10% Owner | Buy | 3.0M | $0 |
| 2026-05-13 | NET Power Inc. (NPWR) | 10% Owner | Sell | 3.0M | $0 |
| 2026-03-10 | NET Power Inc. (NPWR) | 10% Owner | Buy | 3.0M | $0 |
| 2026-03-10 | NET Power Inc. (NPWR) | 10% Owner | Sell | 3.0M | $0 |
来源：SEC Form 4 申报文件 · 截至 2026-09-10