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.
13F holders, Q4 2021
Institutional positions in Merrimack Pharmaceuticals Inc as of Dec 31, 2021. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 37
- −1 vs. Q3 2021
- Shares held
- 7.50M
- −180.5K (−2.4%) vs. Q3 2021
- Total value
- $29.3M
- −$7.77M (−21.0%) vs. Q3 2021
- New holders
- 3
- 4 more added
- Sold out
- 4
- 10 more reduced
Compare with Q3 2021: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting MACK on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 1 | $0 |
| Q1 2026 | 1 | $0 |
| Q4 2025 | 1 | $0 |
| Q3 2025 | 1 | $0 |
| Q2 2025 | 1 | $0 |
| Q1 2025 | 1 | $0 |
| Q4 2024 | 2 | $370.7K |
| Q3 2024 | 2 | $0 |
| Q2 2024 | 12 | $5.32M |
| Q1 2024 | 70 | $137.1M |
| Q4 2023 | 67 | $124.9M |
| Q3 2023 | 63 | $104.4M |
| Q2 2023 | 62 | $98.5M |
| Q1 2023 | 50 | $91.0M |
| Q4 2022 | 47 | $86.6M |
| Q3 2022 | 41 | $30.0M |
| Q2 2022 | 42 | $48.0M |
| Q1 2022 | 40 | $49.4M |
| Q4 2021 | 37 | $29.3M |
| Q3 2021 | 38 | $37.1M |
| Q2 2021 | 42 | $50.3M |
| Q1 2021 | 43 | $49.8M |
Institutions, Q4 2021
Shares, value and share of portfolio for each institution holding Merrimack Pharmaceuticals Inc; share changes are against Q3 2021.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Newtyn Management, LLC | 1,548,883 | $6.06M | 1.61% | 00.0% | Unchanged |
| 22NW, LP | 1,241,896 | $4.86M | 1.50% | 00.0% | Unchanged |
| Western Standard LLC | 1,172,463 | $4.58M | 2.71% | −97,095−7.6% | Reduced |
| Vanguard Group Inc | 616,848 | $2.41M | 0.00% | −1,761−0.3% | Reduced |
| Nantahala Capital Management, LLC | 569,971 | $2.23M | 0.14% | 00.0% | Unchanged |
| Bronte Capital Management Pty Ltd. | 537,584 | $2.10M | 0.27% | −11,252−2.1% | Reduced |
| Dimensional Fund Advisors LP | 488,687 | $1.91M | 0.00% | −10,681−2.1% | Reduced |
| Point72 Asset Management, L.P. | 341,685 | $1.34M | 0.01% | 00.0% | Unchanged |
| BlackRock Inc. | 212,663 | $832.0K | 0.00% | +1,612+0.8% | Added |
| Wittenberg Investment Management, Inc. | 188,694 | $738.0K | 0.27% | 00.0% | Unchanged |
| Geode Capital Management, LLC | 96,692 | $378.0K | 0.00% | 00.0% | Unchanged |
| Sepio Capital, LP | 78,829 | $308.0K | 0.02% | 00.0% | Unchanged |
| Yakira Capital Management, Inc. | 73,450 | $287.0K | 0.04% | +12,816+21.1% | Added |
| Bridgeway Capital Management, LLC | 59,200 | $231.0K | 0.00% | 00.0% | Unchanged |
| State Street Corp | 46,556 | $182.0K | 0.00% | 00.0% | Unchanged |
| Bank of New York Mellon Corp | 40,996 | $160.0K | 0.00% | 00.0% | Unchanged |
| Two Sigma Investments, LP | 35,966 | $141.0K | 0.00% | −9,949−21.7% | Reduced |
| Susquehanna International Group, LLP | 27,299 | $107.0K | 0.00% | +27,299 | New |
| Two Sigma Advisers, LP | 25,681 | $100.0K | 0.00% | −6,800−20.9% | Reduced |
| Northern Trust Corp | 25,151 | $98.0K | 0.00% | 00.0% | Unchanged |
| Renaissance Technologies LLC | 19,461 | $76.0K | 0.00% | −43,059−68.9% | Reduced |
| Brown Advisory Inc | 15,029 | $59.0K | 0.00% | 00.0% | Unchanged |
| Radnor Capital Management, LLC | 13,332 | $52.0K | 0.01% | +13,332 | New |
| Mascoma Wealth Management LLC | 5,000 | $20.0K | 0.01% | 00.0% | Unchanged |
| Morgan Stanley | 5,122 | $19.0K | 0.00% | −706−12.1% | Reduced |
| Royal Bank of Canada | 3,517 | $14.0K | 0.00% | +1,509+75.1% | Added |
| Webster Bank, N. A. | 3,055 | $12.0K | 0.00% | 00.0% | Unchanged |
| Bank of America Corp | 1,257 | $5.00K | 0.00% | −745−37.2% | Reduced |
| Baldwin Brothers Inc | 500 | $2.00K | 0.00% | 00.0% | Unchanged |
| Tower Research Capital LLC (TRC) | 628 | $2.00K | 0.00% | +561+837.3% | Added |
| Rise Advisors, LLC | 272 | $1.06K | 0.00% | +272 | New |
| Federated Hermes, Inc. | 91 | $1.00K | 0.00% | −129−58.6% | Reduced |
| Sandy Spring Bank | 300 | $1.00K | 0.00% | 00.0% | Unchanged |
| UBS Group AG | 197 | $1.00K | 0.00% | 00.0% | Unchanged |
| TSFG, LLC | 160 | $1.00K | 0.00% | 00.0% | Unchanged |
| Wells Fargo & Company | 116 | $0 | 0.00% | 00.0% | Unchanged |
| AdvisorNet Financial, Inc | 20 | $0 | 0.00% | 00.0% | Unchanged |
| Group One Trading, L.P. | 0 | $0 | 0.00% | −31,535−100.0% | Sold out |
| Cetera Advisor Networks LLC | 0 | $0 | 0.00% | −13,400−100.0% | Sold out |
| Citadel Advisors LLC | 0 | $0 | 0.00% | −10,622−100.0% | Sold out |
| O'Shaughnessy Asset Management, LLC | 0 | $0 | 0.00% | −154−100.0% | Sold out |