0001576885 2022-03-09 2022-03-09 0001576885 false --12-31 8-K 2023-03-09 Acumen Pharmaceuticals, Inc. DE 001-40551 36-4108129 427 Park St. Charlottesville VA 22902 434 297-1000 false false false false Common Stock, $0.0001 par value ABOS NASDAQ true false