Siemers Eric
SEC insider (Form 3/4/5 filer). CIK 0001866239. Chief Medical Officer at Acumen Pharmaceuticals, Inc. (ABOS). 8 reported Form 4/5 transactions since Sep 2024; latest on Jan 22, 2026. Located in NEWTON, MA.
Companies Siemers Eric has filed insider reports for
- Acumen Pharmaceuticals, Inc. (ABOS): Officer, Chief Medical Officer
Siemers Eric
CIK: 0001866239
Transaction Breakdown
High conviction signal
Position reduction
Derivative conversions
Compensation grants
Gifts, tax withholding, conversions, dispositions to the issuer and other codes
Companies & Roles (1)
Acumen Pharmaceuticals, Inc.
Discretionary Trading P&L
Holdings
Transaction History (8 total)
- Jan 22, 2026ABOS
Acumen Pharmaceuticals, Inc.
SaleDirect895 shares at avg. $1.82$2K - Jan 21, 2026ABOS
Acumen Pharmaceuticals, Inc.
SaleDirect2.3K shares at avg. $1.80$4K - Jan 16, 2026ABOS
Acumen Pharmaceuticals, Inc.
AwardDirect99.1K shares- - Jan 6, 2026ABOS
Acumen Pharmaceuticals, Inc.
SaleDirect6.8K shares at avg. $1.97$13K - Jan 5, 2026ABOS
Acumen Pharmaceuticals, Inc.
SaleDirect4K shares at avg. $1.96$8K - Jan 21, 2025ABOS
Acumen Pharmaceuticals, Inc.
SaleDirect3.2K shares at avg. $1.59$5K - Jan 6, 2025ABOS
Acumen Pharmaceuticals, Inc.
AwardDirect66.8K shares- - Jan 3, 2025ABOS
Acumen Pharmaceuticals, Inc.
SaleDirect10.9K shares at avg. $1.85$20K
| Type | Shares | Price | Ownership | |||
|---|---|---|---|---|---|---|
| Jan 22, 2026 | ABOS Acumen Pharmaceuticals, Inc. | Sale | 895 | $1.82 | $1,629 | Direct |
| Jan 21, 2026 | ABOS Acumen Pharmaceuticals, Inc. | Sale | 2,331 | $1.80 | $4,204 | Direct |
| Jan 16, 2026 | ABOS Acumen Pharmaceuticals, Inc. | Award | 99,133 | - | $0 | Direct |
| Jan 6, 2026 | ABOS Acumen Pharmaceuticals, Inc. | Sale | 6,834 | $1.97 | $13,442 | Direct |
| Jan 5, 2026 | ABOS Acumen Pharmaceuticals, Inc. | Sale | 4,000 | $1.96 | $7,835 | Direct |
| Jan 21, 2025 | ABOS Acumen Pharmaceuticals, Inc. | Sale | 3,219 | $1.59 | $5,118 | Direct |
| Jan 6, 2025 | ABOS Acumen Pharmaceuticals, Inc. | Award | 66,800 | - | $0 | Direct |
| Jan 3, 2025 | ABOS Acumen Pharmaceuticals, Inc. | Sale | 10,859 | $1.85 | $20,047 | Direct |
1-8 of 8 transactions