Form Type: 4

SEC EDGAR Link
Accession Number:0000899243-20-020430
Date:2020-07-22
Issuer: MERRIMACK PHARMACEUTICALS INC (MACK)
Original Submission Date:

Reporting Person:

CROCKER GARY L
C/O MERRIMACK PHARMACEUTICALS, INC.
ONE BROADWAY 14TH FLOOR CAMBRIDGE, MA 02142

Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
Title of SecurityTransaction Date2a. Deemed Execution Date Transaction CodeSharesAcquired or DisposedPrice per share 5. Amount of Securities Beneficially Owned Following Reported Transaction 6. Ownership Form Direct or IndirectNature of Indirect Ownership
COMMON STOCK 2020-07-22 S 17,000 d $3.20 0 f1 direct
COMMON STOCK 2020-07-22 S 5,986 d $3.04 0 f1 direct
COMMON STOCK 2020-07-22 S 8,428 d $3.20 0 f2 direct
COMMON STOCK 2020-07-22 S 86,549 d $3.04 0 f2 direct
COMMON STOCK 2020-07-22 S 52,068 d $3.04 0 indirect f3
COMMON STOCK 2020-07-22 S 17,250 d $3.20 0 indirect f4
COMMON STOCK 2020-07-22 S 6,228 d $3.20 0 indirect f5
Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, convertible securities
Title of Derivative Security Conversion or Exercise Price of Derivative Security Transaction Date Deemed Execution Date Transaction Code Number of Derivative Securities Acquired (A) or Disposed of (D) Date ExercisableExpiration Date Title and Amount of Securities Underlying Derivative Security Price of Derivative Security Number of derivative Securities Beneficially Owned Following Reported Transaction(s) Ownership Form: Direct (D) or Indirect (I) Nature of Indirect Beneficial Ownership
Footnotes
IDfootnote
f1 shares held directly by reporting person.
f2 shares held jointly with reporting person's wife.
f3 shares held directly by reporting person's wife.
f4 shares held by crocker family investments, llc, over which reporting person is the managing member.
f5 shares held by crocker ventures, llc, over which reporting person is the president and managing member.
f6 the sale of the securities referenced in this from 4 were conducted in a private transaction between gary crocker and certain family members and affiliates as the sellers and each of western standard partners, l.p., western standard partners qp, l.p., newtyn partners, lp, and newton partners te, lp as the purchasers, regarding all shares of the company over which he had dispositive control, along with the record owners of most of the shares of the company over which reporting person had voting control. the purpose of the sale was to minimize tax liability by matching losses from these sales of company stock with other investment gains. gary crocker is president and chairman of merrimack pharmaceuticals, inc. (the "company"). eric andersen, a member of the company's board of directors, is managing member of western standard llc, the investment manager for each of western standard partners l.p. and western standard partners qp l.p.
f7 (continued from footnote 6) noah levy, a member of the company's board of directors, is managing member of newtyn management, llc, the investment manager for newtyn partners, lp, and newton partners te, lp.
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