Hanstveit Arve (CIK 1430122) reported 12 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-06-05). Recent activity: Buy ERII (18,094 shares), Sell ERII (2,419 shares), Sell ERII (165,292 shares), Sell ERII (25,000 shares), Sell ERII (38,418 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-06-05 | Energy Recovery, Inc. (ERII) | Director | Buy | 18,094 | $149,999 |
| 2026-04-08 | Energy Recovery, Inc. (ERII) | Director | Sell | 2,419 | $24,892 |
| 2026-04-06 | Energy Recovery, Inc. (ERII) | Director | Sell | 165,292 | $1.7M |
| 2026-03-11 | Energy Recovery, Inc. (ERII) | Director | Sell | 25,000 | $274,000 |
| 2026-03-09 | Energy Recovery, Inc. (ERII) | Director | Sell | 38,418 | $411,457 |
| 2026-03-09 | Energy Recovery, Inc. (ERII) | Director | Sell | 11,582 | $123,001 |
| 2025-12-08 | Energy Recovery, Inc. (ERII) | Director | Sell | 15,000 | $224,550 |
| 2025-12-08 | Energy Recovery, Inc. (ERII) | Director | Sell | 15,000 | $220,650 |
| 2025-06-13 | Energy Recovery, Inc. (ERII) | Director | Sell | 20,000 | $255,000 |
| 2025-06-13 | Energy Recovery, Inc. (ERII) | Director | Sell | 30,000 | $380,400 |
| 2025-06-06 | Energy Recovery, Inc. (ERII) | Director | Buy | 12,038 | $0 |
| 2025-03-13 | Energy Recovery, Inc. (ERII) | Director | Sell | 50,000 | $817,000 |
Source: SEC Form 4 filings · as of 2026-06-05