TESARO INC

CUSIP: 881569107 Class: COM

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

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

Q4 2014
Shares 31,218 Value ($000) $1,161 Avg Close — Range —
Q3 2014
Shares 31,218 Value ($000) $840 Avg Close — Range —
Q2 2014
Shares 31,218 Value ($000) $971 Avg Close — Range —
Q1 2014
Shares 31,218 Value ($000) $920 Avg Close — Range —
Q4 2013
Shares 31,218 Value ($000) $882 Avg Close — Range —
Q3 2013
Shares 31,218 Value ($000) $1,209 Avg Close — Range —
Q2 2013
Shares 31,218 Value ($000) $1,022 Avg Close — Range —