Eric Siemers serves as Executive at Acumen Pharmaceuticals, Inc., where they oversee executive responsibilities. Since joining the company, Eric Siemers has executed 9 insider transactions totaling $38.7K, demonstrating a bearish approach to their equity position. Their most recent transaction on Jan 22, 2026 involved selling 895 shares valued at $1.6K.
Eric Siemers currently holds 255,371 shares of Acumen Pharmaceuticals, Inc. (ABOS), valued at approximately $0. This represents their equity stake as Executive.
Based on SEC Form 4 filings, Eric Siemers has been a net seller of ABOS stock. They have purchased $0 and sold $38.7K worth of shares.
Eric Siemers's most recent insider trade was on Jan 22, 2026, when they sold 895 shares at $1.82 per share.
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| $1.80 |
| Discretionary |
| Jan 16, 2026 | ABOS | $0 | Award | 148,700 | $N/A | Discretionary |
| Jan 16, 2026 | ABOS | $0 | Award | 99,133 | $N/A | Discretionary |
| Jan 6, 2026 | ABOS | $13.4K | Sale | 6,834 | $1.97 | Discretionary |
| Jan 5, 2026 | ABOS | $7.8K | Sale | 4,000 | $1.96 | Discretionary |
| Jan 18, 2024 | ABOS | $11.6K | Sale | 3,124 | $3.71 | Planned |
| Jan 2, 2024 | ABOS | $0 | Award | 94,000 | $N/A | Discretionary |
| Jan 17, 2023 | ABOS | $0 | Award | 26,700 | $N/A | Discretionary |