ACUMEN PHARMACEUTICALS, INC.
ACUMEN PHARMACEUTICALS, INC. is a Public Limited Company registered in United States under 001819791, and its current status with Massachusetts Secretary of the Commonwealth is active. The company was incorporated on 11 July 2024 and lists its registered address as United States. 5 shareholders are on record for ACUMEN PHARMACEUTICALS, INC., and since every one of them is a company rather than an individual, this particular filing does not on its own establish an ultimate beneficial owner (UBO) — identifying one would mean tracing the ownership of each shareholding company in turn. This profile is sourced directly from Massachusetts Secretary of the Commonwealth and was last updated on 4 October 2026.
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Shareholders
5
Five shareholders are currently on record for ACUMEN PHARMACEUTICALS, INC., reflecting the stock ledger maintained under state corporate law (e.g. §219 of the Delaware General Corporation Law) rather than a public filing.
The largest of these is RA Capital Management, L.P., holding 43.4% — the largest recorded stake — followed by Sands Capital Alternatives, LLC at 9.9%; the remaining 3 shareholders shown hold smaller stakes.
The register reports 20 shareholders in total, though only the top 5 by holding are shown in this view.
Because every shareholder shown is a company rather than an individual, the ownership chain continues above this level, and no beneficial owner can be established from this filing alone.
| Shareholder | Type | Holding | Source Document |
|---|---|---|---|
| RA Capital Management, L.P. | 43.4% | Massachusetts Secretary of the Commonwealth | |
| Sands Capital Alternatives, LLC | 9.9% | Massachusetts Secretary of the Commonwealth | |
| Franklin Resources, Inc. | 6.7% | Massachusetts Secretary of the Commonwealth | |
| FMR, LLC | 5.9% | Massachusetts Secretary of the Commonwealth | |
| Vanguard Group Inc | 4.8% | Massachusetts Secretary of the Commonwealth |
Officers
5
The Ceo & Director of ACUMEN PHARMACEUTICALS, INC. currently on record is Daniel J. O'connell M.b.a.; five officers are currently on record for ACUMEN PHARMACEUTICALS, INC., filed with Massachusetts Secretary of the Commonwealth.
The register reports 26 officers in total, including past appointments, though only the 5 most relevant records are shown here.
Management authority at ACUMEN PHARMACEUTICALS, INC. sits with these individuals, not with shareholders, who are covered separately and hold ownership rather than control.
The source filing doesn't specify representation authority — whether officers can act individually or must sign jointly to bind the company — so that detail isn't available here.
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Frequently Asked Questions
Who owns ACUMEN PHARMACEUTICALS, INC.?
Five shareholders are currently on record for ACUMEN PHARMACEUTICALS, INC., reflecting the stock ledger maintained under state corporate law (e.g. §219 of the Delaware General Corporation Law) rather than a public filing. The largest of these is RA Capital Management, L.P., holding 43.4% — the largest recorded stake — followed by Sands Capital Alternatives, LLC at 9.9%; the remaining 3 shareholders shown hold smaller stakes. Because every shareholder shown is a company rather than an individual, the ownership chain continues above this level, and no beneficial owner can be established from this filing alone.
Who is ACUMEN PHARMACEUTICALS, INC.'s UBO (Ultimate Beneficial Owner)?
Every shareholder recorded for ACUMEN PHARMACEUTICALS, INC. is itself a company rather than a natural person, so no Ultimate Beneficial Owner (UBO) is identified at this level; establishing one would require tracing the ownership of each shareholding company in turn.
How many shareholders does ACUMEN PHARMACEUTICALS, INC. have on record?
5 shareholders are shown on record for ACUMEN PHARMACEUTICALS, INC.. The register reports 20 in total; only the top 5 by holding are shown here.
What is ACUMEN PHARMACEUTICALS, INC.'s company registration number?
ACUMEN PHARMACEUTICALS, INC.'s registration number is 001819791, filed with Massachusetts Secretary of the Commonwealth in United States. Its current status on the register is active.
Is ACUMEN PHARMACEUTICALS, INC. still an active company?
ACUMEN PHARMACEUTICALS, INC.'s status on Massachusetts Secretary of the Commonwealth is listed as active.
When was ACUMEN PHARMACEUTICALS, INC. incorporated?
ACUMEN PHARMACEUTICALS, INC. was incorporated on 11 July 2024, according to Massachusetts Secretary of the Commonwealth.
What is ACUMEN PHARMACEUTICALS, INC.'s registered address?
The registered address on file for ACUMEN PHARMACEUTICALS, INC. is United States.
What legal structure is ACUMEN PHARMACEUTICALS, INC. registered as?
ACUMEN PHARMACEUTICALS, INC. is registered as a Public Limited Company in United States.
Who are the officers/directors of ACUMEN PHARMACEUTICALS, INC.?
The Ceo & Director of ACUMEN PHARMACEUTICALS, INC. currently on record is Daniel J. O'connell M.b.a.; five officers are currently on record for ACUMEN PHARMACEUTICALS, INC., filed with Massachusetts Secretary of the Commonwealth. Management authority at ACUMEN PHARMACEUTICALS, INC. sits with these individuals, not with shareholders, who are covered separately and hold ownership rather than control.
Can Zavia monitor changes to ACUMEN PHARMACEUTICALS, INC.'s ownership over time?
This profile reflects a point-in-time snapshot from Massachusetts Secretary of the Commonwealth. Zavia's monitoring API can track changes to ACUMEN PHARMACEUTICALS, INC.'s registered shareholders, officers, and group structure going forward, flagging updates as they're filed rather than requiring a manual recheck.
Can I access ACUMEN PHARMACEUTICALS, INC.'s data through an API?
Yes. Zavia's API connects directly to official government ownership registries across 195 countries and territories, including United States, so records like ACUMEN PHARMACEUTICALS, INC.'s registration, shareholder, UBO, and group-structure data can be queried programmatically instead of viewed one page at a time.
Where does this company information come from, and how current is it?
This record is sourced directly from Massachusetts Secretary of the Commonwealth and was last synced on 4 October 2026.