ARCA biopharma
ARCA biopharma is a registered legal entity registered in United States under 20091112429, and its current status with Colorado Secretary of State is inactive. The company was incorporated on 24 February 2009 and lists its registered address as Westminster, United States. 5 shareholders are on record for ARCA biopharma, 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 Colorado Secretary of State and was last updated on 21 October 2026.
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Shareholders
5
Five shareholders are currently on record for ARCA biopharma, reflecting the stock ledger kept by the company under state corporate law (e.g. §219 of the Delaware General Corporation Law) rather than a public filing.
The largest of these is Bml Capital Management, Llc, holding 20.6% — the largest recorded stake — followed by Western Standard, LLC at 18.3%; 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 |
|---|---|---|---|
| Bml Capital Management, Llc | 20.6% | Colorado Secretary of State | |
| Western Standard, LLC | 18.3% | Colorado Secretary of State | |
| Vanguard Group Inc | 13.4% | Colorado Secretary of State | |
| Newtyn Management, Llc | 9.1% | Colorado Secretary of State | |
| Vanguard Total Stock Market Index Fund | 9.1% | Colorado Secretary of State |
Officers
2
Two officers are currently on record for ARCA biopharma, filed with Colorado Secretary of State. Thomas A. Keuer serves as President, Coo & Principal Executive Officer; C. Jeffrey Dekker Cpa serves as Cfo, Treasurer & Company Secretary.
Management authority at ARCA biopharma 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 ARCA biopharma?
Five shareholders are currently on record for ARCA biopharma, reflecting the stock ledger kept by the company under state corporate law (e.g. §219 of the Delaware General Corporation Law) rather than a public filing. The largest of these is Bml Capital Management, Llc, holding 20.6% — the largest recorded stake — followed by Western Standard, LLC at 18.3%; 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 ARCA biopharma's UBO (Ultimate Beneficial Owner)?
Every shareholder recorded for ARCA biopharma 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 ARCA biopharma have on record?
5 shareholders are shown on record for ARCA biopharma. The register reports 20 in total; only the top 5 by holding are shown here.
What is ARCA biopharma's company registration number?
ARCA biopharma's registration number is 20091112429, filed with Colorado Secretary of State in United States. Its current status on the register is inactive.
Is ARCA biopharma still an active company?
ARCA biopharma's status on Colorado Secretary of State is listed as inactive, not currently active.
When was ARCA biopharma incorporated?
ARCA biopharma was incorporated on 24 February 2009, according to Colorado Secretary of State.
What is ARCA biopharma's registered address?
The registered address on file for ARCA biopharma is Westminster, United States.
Who are the officers/directors of ARCA biopharma?
Two officers are currently on record for ARCA biopharma, filed with Colorado Secretary of State. Thomas A. Keuer serves as President, Coo & Principal Executive Officer; C. Jeffrey Dekker Cpa serves as Cfo, Treasurer & Company Secretary. Management authority at ARCA biopharma sits with these individuals, not with shareholders, who are covered separately and hold ownership rather than control.
Can Zavia monitor changes to ARCA biopharma's ownership over time?
This profile reflects a point-in-time snapshot from Colorado Secretary of State. Zavia's monitoring API can track changes to ARCA biopharma's registered shareholders, officers, and group structure going forward, flagging updates as they're filed rather than requiring a manual recheck.
Can I access ARCA biopharma'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 ARCA biopharma'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 Colorado Secretary of State and was last synced on 21 October 2026.