Ulrik B. Nielsen - Jun 6, 2023 Form 4 Insider Report for MERRIMACK PHARMACEUTICALS INC (MACK)

Role
Director
Signature
/s/ Ulrik B. Nielsen
Stock symbol
MACK
Transactions as of
Jun 6, 2023
Transactions value $
$0
Form type
4
Date filed
6/8/2023, 04:08 PM
Previous filing
Jun 7, 2022

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction MACK Stock Option (right to buy) Award $0 +7K +33.33% $0.00 28K Jun 6, 2023 Common Stock 7K $12.48 Direct F1
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 This option vests as to 1/4th of the total number of shares on 7/1/23 and an additional 1/4th of the total number of shares at the end of each successive three month period thereafter until 4/1/24.