Ulrik B. Nielsen - Jan 24, 2022 Form 4 Insider Report for MERRIMACK PHARMACEUTICALS INC (MACK)

Role: Director
Signature: /s/ Ulrik B. Nielsen
Stock symbol: MACK
Transactions as of: Jan 24, 2022
Transactions value $: $60,630
Form type: 4
Date filed: 1/25/2022, 03:13 PM
Previous filing: Jun 14, 2021
Next filing: Jun 7, 2022

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	MACK	Common Stock	Purchase	$60.6K	+14.3K	+62.99%	$4.24	37K	Jan 24, 2022	See footnote	F1, F2

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $4.175 to $4.25, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote (1) to this Form 4.
F2	Shares held by Crocker Family Investments, LLC, over which Reporting Person is the Managing Member.

Content

The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $4.175 to $4.25, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote (1) to this Form 4.

Shares held by Crocker Family Investments, LLC, over which Reporting Person is the Managing Member.