Merrimack Pharmaceuticals Inc

MACKDelisted May 10, 2024

Industry: Pharmaceutical Preparations
SEC CIK: 0001274792

SEC filings (opens in a new tab)

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.

Q2 2022 vs. Q1 2022

How the institutions holding Merrimack Pharmaceuticals Inc changed between Q1 2022 and Q2 2022.

All holders in Q2 2022 All holders in Q1 2022

13F holders of MACK: Q1 2022 compared with Q2 2022
Measure	Q1 2022	Q2 2022	Change
Holders	40	42	+2
Shares	7.90M	8.06M	+159.3K (+2.0%)
Value	$49.4M	$48.0M	−$1.39M (−2.8%)

New holders (3)

Institutions that held Merrimack Pharmaceuticals Inc at the end of Q2 2022 but not at the end of Q1 2022.

Institutions new to MACK in Q2 2022
Institution	Shares	Value	% of portfolio
Citadel Advisors LLC	16,211	$97.0K	0.00%
Goldman Sachs Group Inc	14,142	$84.0K	0.00%
City State Bank	25	$0	0.00%

Sold out (1)

Institutions that held Merrimack Pharmaceuticals Inc at the end of Q1 2022 and filed for Q2 2022 without it.

Institutions that sold out of MACK in Q2 2022
Institution	Shares, Q1 2022	Value, Q1 2022
Radnor Capital Management, LLC	13,332	$84.0K