Fountain Nathan B (CIK 1869596) reported 3 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-06-10). Recent activity: Sell ABOS (6,400 shares), Buy ABOS (35,500 shares), Buy ABOS (12,800 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-06-10 | Acumen Pharmaceuticals, Inc. (ABOS) | Director | Sell | 6,400 | $14,273 |
| 2026-06-05 | Acumen Pharmaceuticals, Inc. (ABOS) | Director | Buy | 35,500 | $0 |
| 2025-06-05 | Acumen Pharmaceuticals, Inc. (ABOS) | Director | Buy | 12,800 | $0 |
Source: SEC Form 4 filings · as of 2026-06-10