CUBIST PHARMACEUTICALS INC

CUSIP: 229678123 Class: COMMON

PRICE T ROWE ASSOCIATES INC /MD/'s Holding History (CIK: 0000080255)

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

Q4 2014
Shares 343,650 Value ($000) $14 Avg Close — Range —
Q3 2014
Shares 343,650 Value ($000) $38 Avg Close — Range —
Q2 2014
Shares 343,650 Value ($000) $40 Avg Close — Range —
Q1 2014
Shares 343,650 Value ($000) $223 Avg Close — Range —
Q4 2013
Shares 343,950 Value ($000) $464 Avg Close — Range —