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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.

Q4 2021 vs. Q3 2021

How the institutions holding Merrimack Pharmaceuticals Inc changed between Q3 2021 and Q4 2021.

All holders in Q4 2021All holders in Q3 2021

13F holders of MACK: Q3 2021 compared with Q4 2021
MeasureQ3 2021Q4 2021Change
Holders3837−1
Shares7.68M7.50M−180.5K (−2.4%)
Value$37.1M$29.3M−$7.77M (−21.0%)

New holders (3)

Institutions that held Merrimack Pharmaceuticals Inc at the end of Q4 2021 but not at the end of Q3 2021.

Institutions new to MACK in Q4 2021
InstitutionSharesValue% of portfolio
Susquehanna International Group, LLP27,299$107.0K0.00%
Radnor Capital Management, LLC13,332$52.0K0.01%
Rise Advisors, LLC272$1.06K0.00%

Sold out (4)

Institutions that held Merrimack Pharmaceuticals Inc at the end of Q3 2021 and filed for Q4 2021 without it.

Institutions that sold out of MACK in Q4 2021
InstitutionShares, Q3 2021Value, Q3 2021
Group One Trading, L.P.31,535$152.0K
Cetera Advisor Networks LLC13,400$65.0K
Citadel Advisors LLC10,622$51.0K
O'Shaughnessy Asset Management, LLC154$1.00K