Merrimack Pharmaceuticals Inc

-

Stock Issuer and Owners

Home | Sign Up | Log In
Message
Happy Holidays!! thanks for using AUM13F!!
List of Funds
Boston Firms
Boston Hedge Funds
Cornell Alumni Firms
CalPERS Portfolio
NYSCRF Portfolio
User Guide
Regulatory AUM vs AUM
LP Portfolios
Related Firms
Build a Portfolio
Comprehensive Search
Merrimack Pharmaceuticals Inc
TickerMACK
CIK #0001274792
CUSIP590328100
SectorLife Sciences - Pharmaceutical Preparations
AddressOne Kendall Square Suite B7201, Cambridge, MA 02139
Source [EDGAR]
CIK Filing 2011 - 2025
[0001274792] 10-K
[0001274792] 10-Q
[0001274792] 3
[0001274792] 4
[0001274792] 5
[0001274792] 8-K
[0001274792] SC 13D
[0001274792] SC 13G
Form 13D/13G Filer Form 13D/13G Subject Filed % Owned
Point72 Asset Management LP Merrimack Pharmaceuticals Inc [2022-08-04] 6.7
Nantahala Capital Management LLC Merrimack Pharmaceuticals Inc [2020-02-14] 5.6
Dimensional Fund Advisors LP Merrimack Pharmaceuticals Inc [2020-02-12] 5.04
Western Standard LLC Merrimack Pharmaceuticals Inc [2019-09-19] 6.3
Newtyn Management LLC Merrimack Pharmaceuticals Inc [2019-09-19] 8.8
Newtyn Management LLC Merrimack Pharmaceuticals Inc [2019-02-14] 6.7
22NW LP Merrimack Pharmaceuticals Inc [2019-02-08] 5.62
JFL Capital Management LLC Merrimack Pharmaceuticals Inc [2018-11-02] 2.6
Biotechnology Value Fund L P Merrimack Pharmaceuticals Inc [2018-04-10] 4.1
BlackRock Inc Merrimack Pharmaceuticals Inc [2018-01-25] 6.1
Consonance Capital Management LP Merrimack Pharmaceuticals Inc [2017-02-13] 6.78
Teachers Advisors Inc Merrimack Pharmaceuticals Inc [2016-02-10] 4.4
TIAA CREF Investment Management LLC Merrimack Pharmaceuticals Inc [2016-02-10] 4.4
Westfield Capital Management Co LP Merrimack Pharmaceuticals Inc [2016-02-10] 6.28
Vanguard Group Inc Merrimack Pharmaceuticals Inc [2015-02-11] 6.24
BlackRock Inc Merrimack Pharmaceuticals Inc [2015-02-02] 6.9
Jennison Associates LLC Merrimack Pharmaceuticals Inc [2014-02-07] 6.4
Prudential Financial Inc Merrimack Pharmaceuticals Inc [2014-02-05] 6.4
Credit Suisse AG/ Merrimack Pharmaceuticals Inc [2013-02-14] 5.41
FMR LLC Merrimack Pharmaceuticals Inc [2012-04-10] 0.0
Sanofi Merrimack Pharmaceuticals Inc [2012-04-02] 5.65
Form 3/4/5 Filer 2011 - 2025
Radeljevic Ana
Merrimack Pharmaceuticals Inc
Nielsen Ulrik B.
Crocker Gary L
Andersen Eric
Western Standard Partners LP
Western Standard Partners QP, L.P.
Western Standard LLC
Newtyn Management, LLC
Ledo Capital, LLC
Newtyn Capital Partners, LP
Levy Noah G.
Newtyn TE Partners LP
Newtyn Partners LP
Ray Russell T
22NW GP, Inc.
Aryeh Jason
JFL Capital Management LP
JFL Capital Holdings LLC
JFL Partners Fund LP
Lawler Joseph F.
JFL Capital Management, LLC
Peters Richard
22NW Fund, LP
22NW LP
English Aron R.
22NW Fund GP, LLC
Lin Kenneth
Santillana Sergio L.
Munsie Jeffrey A
Franchi Jean M.
Drummond Daryl C
Quigley James H.
Dineen John M.
Demetri George
Porter Michael E
Mendelsohn John
Lee Vivian S
Needham Thomas E. Jr.
Green John L.
Stewart Edward J.
Schoeberl Birgit M.
McClements William M.
Al-Wakeel Yasir B.
Laivins Peter N
Mulroy Robert J.
Sullivan William A.
Fehr Gordon J.
Sinskey Anthony J
Dresser James van B.
Nash Sarah E
Khan Fazal R.
Niyikiza Clet M.
Lovenberg Walter M PhD
Gay Robert C
Form 13F Holdings
Firm Period DFND Voting Shares
Newtyn Management LLC [2023-03-31] SOLE 1,873,694.0 1,873,694.0
Western Standard LLC [2023-03-31] SOLE 1,672,463.0 1,672,463.0
Madison Avenue Partners LP [2023-03-31] SOLE 553,085.0 553,085.0
Dimensional Fund Advisors LP [2023-03-31] SOLE 446,405.0 460,754.0
Vanguard Group Inc [2023-03-31] SOLE 0.0 453,814.0
Susquehanna International Group LLP [2023-03-31] DFND 138,995.0 356,195.0
Citadel Advisors LLC [2023-03-31] DFND 353,291.0 353,291.0
Sepio Capital LP [2023-03-31] SOLE 294,545.0 294,545.0
SIO Capital Management LLC [2023-03-31] SOLE 272,843.0 272,843.0
BlackRock Inc. [2023-03-31] SOLE 221,134.0 222,253.0
Invesco Ltd. [2023-03-31] DFND 0.0 210,507.0
Wittenberg Investment Management Inc [2023-03-31] OTR 0.0 197,994.0
Nantahala Capital Management LLC [2023-03-31] SOLE 191,266.0 191,266.0
Geode Capital Management LLC [2023-03-31] DFND 130,164.0 130,164.0
Boothbay Fund Management LLC [2023-03-31] OTR 0.0 117,436.0
Marshall Wace LLP [2023-03-31] OTR 0.0 98,255.0
Bank of New York Mellon Corp [2023-03-31] DFND 74,880.0 74,880.0
Yakira Capital Management Inc [2023-03-31] SOLE 72,118.0 72,118.0
Belvedere Trading LLC [2023-03-31] SOLE 62,088.0 62,088.0
Morgan Stanley [2023-03-31] DFND 10,443.0 54,160.0
State Street Corp [2023-03-31] DFND 50,556.0 50,556.0
Millennium Management LLC [2023-03-31] SOLE 40,204.0 40,204.0
Jane Street Group LLC [2023-03-31] DFND 37,307.0 37,307.0
Goldman Sachs Group Inc [2023-03-31] DFND 34,898.0 34,898.0
Bridgeway Capital Management LLC [2023-03-31] SOLE 34,200.0 34,200.0
Northern Trust Corp [2023-03-31] DFND 0.0 27,948.0
Brown Advisory Inc [2023-03-31] DFND 15,029.0 15,029.0
Kennedy Capital Management LLC [2023-03-31] SOLE 13,758.0 13,758.0
Barclays PLC [2023-03-31] SOLE 5,438.0 5,438.0
Dimensional Fund Advisors LP [2023-03-31] DFND 0.0 5,386.0
Prev | Page 84 | Next
Terms | Privacy | Guide
tony@aum13f.com