Activist 13D/13G Filings - MERRIMACK PHARMACEUTICALS INC (MACK)

Real time Form 13D and 13G transaction reports:

  • Schedule 13D must be filed within ten days after a person or an organization acquires beneficial ownership of more than 5% of a voting class of a company’s equity securities.
  • Due to inconsistent filing format, it is highly recommended that you read the orignal filing form.
  • Shares are not adjusted for stock split.
"Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise"
- Peter Lynch
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Time period
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Reported
DateTime
TypeCompany
Symbol
Filed By
Symbol
Shares Owned
% Owned
Shares Vs. Prev ReportFiling
2020-02-12
11:45 am
Purchase
13GMERRIMACK PHARMACEUTICALS INC
MACK
DIMENSIONAL FUND ADVISORS LP673,130
5.04%
673,130increase
(New Position)
View
2019-11-19
4:00 pm
Sale
13DMERRIMACK PHARMACEUTICALS INC
MACK
JFL Capital Management LLC701,998
5.3%
-547,830decrease
(-43.83%)
View
2019-09-27
6:51 pm
Unchanged
13DMERRIMACK PHARMACEUTICALS INC
MACK
Newtyn Management LLC1,173,166
8.8%
0
(Unchanged)
View
2019-09-27
6:46 pm
Unchanged
13DMERRIMACK PHARMACEUTICALS INC
MACK
Western Standard LLC842,913
6.3%
0
(Unchanged)
View
2019-09-24
4:52 pm
Unchanged
13DMERRIMACK PHARMACEUTICALS INC
MACK
JFL Capital Management LLC1,249,828
9.4%
0
(Unchanged)
View
2019-09-19
12:40 pm
Sale
13DMERRIMACK PHARMACEUTICALS INC
MACK
Newtyn Management LLC1,173,166
8.8%
-18,220decrease
(-1.53%)
View
2019-09-19
12:31 pm
Purchase
13DMERRIMACK PHARMACEUTICALS INC
MACK
Western Standard LLC842,913
6.3%
842,913increase
(New Position)
View
2019-07-24
4:47 pm
Purchase
13DMERRIMACK PHARMACEUTICALS INC
MACK
JFL Capital Management LLC1,249,828
9.4%
7,932increase
(+0.64%)
View
2019-05-13
4:00 pm
Purchase
13GMERRIMACK PHARMACEUTICALS INC
MACK
Newtyn Management LLC1,191,386
8.9%
302,766increase
(+34.07%)
View
2019-04-17
5:17 pm
Purchase
13DMERRIMACK PHARMACEUTICALS INC
MACK
JFL Capital Management LLC1,241,896
9.3%
79,634increase
(+6.85%)
View
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