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Merrimack Pharmaceuticals Inc

MACKDelisted May 10, 2024
Industry
Pharmaceutical Preparations
SEC CIK
0001274792

Merrimack Pharmaceuticals Inc was delisted on May 10, 2024; its insiders filed their last Form 4 on Dec 28, 2023; 70 institutions reported holding it in 13F filings for Q1 2024, worth $137.1M in total; no superinvestor held it.

Q3 2025 vs. Q2 2025

How the institutions holding Merrimack Pharmaceuticals Inc changed between Q2 2025 and Q3 2025.

All holders in Q3 2025All holders in Q2 2025

13F holders of MACK: Q2 2025 compared with Q3 2025
MeasureQ2 2025Q3 2025Change
Holders110
Shares24.5K24.5K0 (0.0%)
Value$0$0$0

New holders (0)

Institutions that held Merrimack Pharmaceuticals Inc at the end of Q3 2025 but not at the end of Q2 2025.

None.

Sold out (0)

Institutions that held Merrimack Pharmaceuticals Inc at the end of Q2 2025 and filed for Q3 2025 without it.

None.