Shareholders Data

Shareholders

Rows

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Ticker Symbol Entity Name Form Type Access Number Period As Of Date Filing Date Institution Name CIK Name of Issuer Title of Class CUSIP Value SHRS or PRN Amount SHRS or PRN Type PUT_CALL Investment Discretion Other Manager Voting Authority Sole Voting Authority Shared Voting Authority None Date Added Date Updated Company Name Sector Industry
nasdaq:mack nasdaq:mack Shareholders 13F-HR 0000950123-22-006564 Mar 31st, 2022 12:00AM May 17th, 2022 12:00AM May 17th, 2022 12:00AM Western Standard LLC 1517666 MERRIMACK PHARMACEUTICALS IN COM NEW 590328209 6800 1172463 SH SOLE 1172463 0 0 May 18th, 2022 01:10AM May 18th, 2022 01:10AM Merrimack Pharmaceuticals Health Care Pharmaceuticals & Biotechnology
nasdaq:mack nasdaq:mack Shareholders 13F-HR 0001567619-22-010951 Mar 31st, 2022 12:00AM May 16th, 2022 12:00AM May 16th, 2022 12:00AM Cubist Systematic Strategies, LLC 1603465 MERRIMACK PHARMACEUTICALS IN COM NEW 590328209 2 368 SH DFND 1 0 368 0 May 17th, 2022 01:56AM May 17th, 2022 01:56AM Merrimack Pharmaceuticals Health Care Pharmaceuticals & Biotechnology
nasdaq:mack nasdaq:mack Shareholders 13F-HR 0001567619-22-010947 Mar 31st, 2022 12:00AM May 16th, 2022 12:00AM May 16th, 2022 12:00AM Point72 Asset Management, L.P. 1603466 MERRIMACK PHARMACEUTICALS IN COM NEW 590328209 2161 341685 SH DFND 0 0 341685 0 May 17th, 2022 01:56AM May 17th, 2022 01:56AM Merrimack Pharmaceuticals Health Care Pharmaceuticals & Biotechnology
nasdaq:mack nasdaq:mack Shareholders 13F-HR 0001567619-22-010852 Mar 31st, 2022 12:00AM May 16th, 2022 12:00AM May 16th, 2022 12:00AM ROYAL BANK OF CANADA 1000275 MERRIMACK PHARMACEUTICALS IN COM NEW 590328209 0 8 SH DFND 5 8 0 0 May 17th, 2022 01:55AM May 17th, 2022 01:55AM Merrimack Pharmaceuticals Health Care Pharmaceuticals & Biotechnology
nasdaq:mack nasdaq:mack Shareholders 13F-HR 0001567619-22-010852 Mar 31st, 2022 12:00AM May 16th, 2022 12:00AM May 16th, 2022 12:00AM ROYAL BANK OF CANADA 1000275 MERRIMACK PHARMACEUTICALS IN COM NEW 590328209 22 3500 SH DFND 3 3500 0 0 May 17th, 2022 01:55AM May 17th, 2022 01:55AM Merrimack Pharmaceuticals Health Care Pharmaceuticals & Biotechnology
nasdaq:mack nasdaq:mack Shareholders 13F-HR 0001567619-22-010822 Mar 31st, 2022 12:00AM May 16th, 2022 12:00AM May 16th, 2022 12:00AM BANK OF AMERICA CORP /DE/ 70858 MERRIMACK PHARMACEUTICALS IN COM NEW 590328209 8 1236 SH DFND 02 0 0 1236 May 17th, 2022 01:54AM May 17th, 2022 01:54AM Merrimack Pharmaceuticals Health Care Pharmaceuticals & Biotechnology
nasdaq:mack nasdaq:mack Shareholders 13F-HR 0001567619-22-010575 Mar 31st, 2022 12:00AM May 16th, 2022 12:00AM May 16th, 2022 12:00AM KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC 1021223 MERRIMACK PHARMACEUT COMMON 590328209 2 300 SH SOLE 300 0 0 May 17th, 2022 01:52AM May 17th, 2022 01:52AM Merrimack Pharmaceuticals Health Care Pharmaceuticals & Biotechnology
nasdaq:mack nasdaq:mack Shareholders 13F-HR 0001493152-22-013857 Mar 31st, 2022 12:00AM May 16th, 2022 12:00AM May 16th, 2022 12:00AM Newtyn Management, LLC 1569241 MERRIMACK PHARMACEUTICALS IN COM NEW 590328209 10830 1713612 SH SOLE 1713612 0 0 May 17th, 2022 01:52AM May 17th, 2022 01:52AM Merrimack Pharmaceuticals Health Care Pharmaceuticals & Biotechnology
nasdaq:mack nasdaq:mack Shareholders 13F-HR 0001462390-22-000032 Mar 31st, 2022 12:00AM May 16th, 2022 12:00AM May 16th, 2022 12:00AM WITTENBERG INVESTMENT MANAGEMENT, INC. 1697790 MERRIMACK PHARMACEUTICALS INC COM NEW 590328209 1193 188694 SH OTR 0 188694 0 May 17th, 2022 01:51AM May 17th, 2022 01:51AM Merrimack Pharmaceuticals Health Care Pharmaceuticals & Biotechnology
nasdaq:mack nasdaq:mack Shareholders 13F-HR 0001446194-22-000004 Mar 31st, 2022 12:00AM May 16th, 2022 12:00AM May 16th, 2022 12:00AM SUSQUEHANNA INTERNATIONAL GROUP, LLP 1446194 MERRIMACK PHARMACEUTICALS IN COM NEW 590328209 104 16500 SH Call DFND 2 0 0 0 May 17th, 2022 01:51AM May 17th, 2022 01:51AM Merrimack Pharmaceuticals Health Care Pharmaceuticals & Biotechnology

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