Siemers Eric (CIK 1866239) reported 6 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-01-23). Recent activity: Sell ABOS (2,331 shares), Sell ABOS (895 shares), Buy ABOS (99,133 shares), Sell ABOS (4,000 shares), Sell ABOS (6,834 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-01-23 | Acumen Pharmaceuticals, Inc. (ABOS) | Chief Medical Officer | Sell | 2,331 | $4,196 |
| 2026-01-23 | Acumen Pharmaceuticals, Inc. (ABOS) | Chief Medical Officer | Sell | 895 | $1,629 |
| 2026-01-21 | Acumen Pharmaceuticals, Inc. (ABOS) | Chief Medical Officer | Buy | 99,133 | $0 |
| 2026-01-07 | Acumen Pharmaceuticals, Inc. (ABOS) | Chief Medical Officer | Sell | 4,000 | $7,840 |
| 2026-01-07 | Acumen Pharmaceuticals, Inc. (ABOS) | Chief Medical Officer | Sell | 6,834 | $13,463 |
| 2025-01-23 | Acumen Pharmaceuticals, Inc. (ABOS) | Chief Medical Officer | Sell | 3,219 | $5,118 |
Source: SEC Form 4 filings · as of 2026-01-23