CUBIST PHARMACEUTICALS INC

CUSIP: 229678107 Class: COM

BAKER BROS. ADVISORS LP's Holding History (CIK: 0001263508)

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

Q3 2013
Shares 5,000 Value ($000) $318 Avg Close — Range —
Q2 2013
Shares 5,000 Value ($000) $241 Avg Close — Range —