Cover |
Jul. 15, 2025 |
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| Cover [Abstract] | |
| Document Type | 8-K |
| Document Period End Date | Jul. 15, 2025 |
| Entity Registrant Name | Acumen Pharmaceuticals, Inc. |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 001-40551 |
| Entity Tax Identification Number | 36-4108129 |
| Entity Address, Address Line One | 1210-1220 Washington Street |
| Entity Address, Address Line Two | Suite 210 |
| Entity Address, City or Town | Newton |
| Entity Address, State or Province | MA |
| Entity Address, Postal Zip Code | 02465 |
| City Area Code | 617 |
| Local Phone Number | 344-4190 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common Stock, $0.0001 par value |
| Trading Symbol | ABOS |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | true |
| Entity Ex Transition Period | false |
| Entity Central Index Key | 0001576885 |
| Amendment Flag | false |
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- Definition Indicate if registrant meets the emerging growth company criteria. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Two-character EDGAR code representing the state or country of incorporation. No definition available.
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