TETRAPHASE PHARMACEUTICALS I

CUSIP: 88165N105 Class: COMMON STOCK

DEERFIELD MANAGEMENT COMPANY, L.P.'s Holding History (CIK: 0001009258)

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

Q3 2014
Shares 450,191 Value ($000) $8,981 Avg Close — Range —
Q2 2014
Shares 310,024 Value ($000) $4,182 Avg Close — Range —
Q2 2013
Shares 554,898 Value ($000) $3,901 Avg Close — Range —