James B. Murray Jr. Reports 5.00% Stake in Acumen Pharmaceuticals, Inc. (ABOS)

James B. Murray Jr. filed a Schedule 13G regarding his holdings in Acumen Pharmaceuticals, Inc. (ABOS), reporting a beneficial ownership of 3,611,360 shares of Common Stock, representing 5.00% of the company based on 72,212,758 shares outstanding as of March 20, 2026. The filing notes that the reporting person previously held 3,081,057 shares (5.01% at the time) as of April 4, 2025. The current position consists of 3,468,465 shares held by the James B. Murray, Jr. Revocable Trust and 142,895 shares held by Praxis Technologies LLC, where Mr. Murray serves as a manager. The filing includes a statement that this Schedule 13G was filed late due to an inadvertent oversight. The securities were acquired for investment purposes and not with the intent to change or influence the control of the issuer. This filing highlights an increase in the total number of shares held by Mr. Murray compared to the prior year, though his percentage ownership remained relatively stable due to changes in the issuer's total shares outstanding.