CUBIST PHARMACEUTICALS INC

CUSIP: 229678107 Class: COM

HBK INVESTMENTS L P's Holding History (CIK: 0001011443)

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

Q4 2014
Shares 2,850,750 Value ($000) $286,928 Avg Close — Range —
Q3 2013
Shares 7,700 Value ($000) $489 Avg Close — Range —