RICHSTONE ELLEN B (CIK 1281526) reported 5 SEC Form 4 insider transactions across 3 companies over the past 18 months (most recent 2026-08-12). Recent activity: Buy OESX (2,532 shares), Buy CGTX (25,000 shares), Buy OESX (20,000 shares), Buy CGTX (34,000 shares), Buy SUP (37,338 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-08-12 | ORION ENERGY SYSTEMS, INC. (OESX) | Director | Buy | 2,532 | $0 |
| 2026-06-22 | COGNITION THERAPEUTICS INC (CGTX) | Director | Buy | 25,000 | $0 |
| 2025-07-01 | ORION ENERGY SYSTEMS, INC. (OESX) | Director | Buy | 20,000 | $0 |
| 2025-06-23 | COGNITION THERAPEUTICS INC (CGTX) | Director | Buy | 34,000 | $0 |
| 2025-05-27 | SUPERIOR INDUSTRIES INTERNATIONAL INC (SUP) | Director | Buy | 37,338 | $0 |
Source: SEC Form 4 filings · as of 2026-08-12