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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.

Q1 2022 vs. Q4 2021

How the institutions holding Merrimack Pharmaceuticals Inc changed between Q4 2021 and Q1 2022.

All holders in Q1 2022All holders in Q4 2021

13F holders of MACK: Q4 2021 compared with Q1 2022
MeasureQ4 2021Q1 2022Change
Holders3740+3
Shares7.50M7.90M+407.0K (+5.4%)
Value$29.3M$49.4M+$20.1M (+68.4%)

New holders (4)

Institutions that held Merrimack Pharmaceuticals Inc at the end of Q1 2022 but not at the end of Q4 2021.

Institutions new to MACK in Q1 2022
InstitutionSharesValue% of portfolio
Simplex Trading, LLC37,819$239.0K0.01%
Group One Trading, L.P.10,586$67.0K0.00%
Kayne Anderson Rudnick Investment Management LLC300$2.00K0.00%
Cubist Systematic Strategies, LLC368$2.00K0.00%

Sold out (1)

Institutions that held Merrimack Pharmaceuticals Inc at the end of Q4 2021 and filed for Q1 2022 without it.

Institutions that sold out of MACK in Q1 2022
InstitutionShares, Q4 2021Value, Q4 2021
Renaissance Technologies LLC19,461$76.0K