MERRIMACK PHARMACEUTICALS IN

CUSIP: 590328209 Class: Common Stock

PDT Partners, LLC's Holding History (CIK: 0001564702)

Note: Option positions (PUT/CALL) are excluded.

Q2 2018
Shares 29,000 Value ($000) $142 Avg Close — Range —
Q1 2018
Shares 53,100 Value ($000) $427 Avg Close — Range —
Q4 2017
Shares 58,004 Value ($000) $595 Avg Close — Range —