MERRIMACK PHARMACEUTICALS, INC.
MERRIMACK PHARMACEUTICALS, INC. is a Private limited company (Ltd.) registered in United States under 9359994-0143, and its current status with Utah Division of Corporations and Commercial Code is inactive. The company was incorporated on 25 March 2015 and lists its registered address as Cambridge, United States. 5 shareholders are on record for MERRIMACK PHARMACEUTICALS, INC., including at least one natural person recorded as a direct holder; the filing carries no beneficial-ownership flag, so that holder is noted here as a recorded shareholder rather than a confirmed ultimate beneficial owner (UBO). This profile is sourced directly from Utah Division of Corporations and Commercial Code and was last updated on 22 September 2026.
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Shareholders
5
Shareholders of MERRIMACK PHARMACEUTICALS, INC.
Five shareholders are currently on record for MERRIMACK 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 Western Standard, LLC, holding 20.5% — the largest recorded stake — followed by Madison Avenue Partners, LP at 6.8%; the remaining 3 shareholders shown hold smaller stakes. 4 shareholders shown are companies, so the ownership chain continues above this level for those holdings; the other 1 is recorded as direct individual holder, though the record carries no UBO/PSC flag confirming beneficial-owner status.
Data availability
The register reports 20 shareholders in total, though only the top 5 by holding are shown in this view.
Officers
5
Directors and officers of MERRIMACK PHARMACEUTICALS, INC.
The Director of MERRIMACK PHARMACEUTICALS, INC. on record is GORDON FEHR; 5 officers are shown here, filed with Utah Division of Corporations and Commercial Code. Management authority at MERRIMACK 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.
Data availability
The register reports 38 officers in total, including past appointments, though only the 5 most relevant records are shown here.
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Frequently Asked Questions
Who owns MERRIMACK PHARMACEUTICALS, INC.?
Five shareholders are currently on record for MERRIMACK 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 Western Standard, LLC, holding 20.5% — the largest recorded stake — followed by Madison Avenue Partners, LP at 6.8%; the remaining 3 shareholders shown hold smaller stakes. 4 shareholders shown are companies, so the ownership chain continues above this level for those holdings; the other 1 is recorded as direct individual holder, though the record carries no UBO/PSC flag confirming beneficial-owner status.
Who is MERRIMACK PHARMACEUTICALS, INC.'s UBO (Ultimate Beneficial Owner)?
At least one shareholder recorded for MERRIMACK PHARMACEUTICALS, INC. is a natural person. The record carries no dedicated UBO/PSC flag, so that holder is stated here as a recorded shareholder rather than a confirmed Ultimate Beneficial Owner (UBO).
How many shareholders does MERRIMACK PHARMACEUTICALS, INC. have on record?
5 shareholders are shown on record for MERRIMACK PHARMACEUTICALS, INC.. The register reports 20 in total; only the top 5 by holding are shown here.
What is MERRIMACK PHARMACEUTICALS, INC.'s company registration number?
MERRIMACK PHARMACEUTICALS, INC.'s registration number is 9359994-0143, filed with Utah Division of Corporations and Commercial Code in United States. Its current status on the register is inactive.
Is MERRIMACK PHARMACEUTICALS, INC. still an active company?
MERRIMACK PHARMACEUTICALS, INC.'s status on Utah Division of Corporations and Commercial Code is listed as inactive, not currently active.
When was MERRIMACK PHARMACEUTICALS, INC. incorporated?
MERRIMACK PHARMACEUTICALS, INC. was incorporated on 25 March 2015, according to Utah Division of Corporations and Commercial Code.
What is MERRIMACK PHARMACEUTICALS, INC.'s registered address?
The registered address on file for MERRIMACK PHARMACEUTICALS, INC. is Cambridge, United States.
What legal structure is MERRIMACK PHARMACEUTICALS, INC. registered as?
MERRIMACK PHARMACEUTICALS, INC. is registered as a Private limited company (Ltd.) in United States.
Who are the officers/directors of MERRIMACK PHARMACEUTICALS, INC.?
The Director of MERRIMACK PHARMACEUTICALS, INC. on record is GORDON FEHR; 5 officers are shown here, filed with Utah Division of Corporations and Commercial Code. Management authority at MERRIMACK PHARMACEUTICALS, INC. sits with these individuals, not with shareholders, who are covered separately and hold ownership rather than control.
Can Zavia monitor changes to MERRIMACK PHARMACEUTICALS, INC.'s ownership over time?
This profile reflects a point-in-time snapshot from Utah Division of Corporations and Commercial Code. Zavia's monitoring API can track changes to MERRIMACK 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 MERRIMACK 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 MERRIMACK 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 Utah Division of Corporations and Commercial Code and was last synced on 22 September 2026.