TESARO INC

CUSIP: 881569107 Class: COM

MASON STREET ADVISORS, LLC's Holding History (CIK: 0001167711)

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

Q4 2014
Shares 68,400 Value ($000) $2,544 Avg Close — Range —
Q3 2014
Shares 68,400 Value ($000) $1,841 Avg Close — Range —
Q2 2014
Shares 68,400 Value ($000) $2,128 Avg Close — Range —
Q1 2014
Shares 68,400 Value ($000) $2,016 Avg Close — Range —
Q4 2013
Shares 68,400 Value ($000) $1,932 Avg Close — Range —
Q3 2013
Shares 68,400 Value ($000) $2,650 Avg Close — Range —