TETRAPHASE PHARMACEUTICALS I

CUSIP: 88165N105 Class: COMMON STOCK

PUBLIC EMPLOYEES RETIREMENT ASSOCIATION OF COLORADO's Holding History (CIK: 0000315297)

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

Q3 2015
Shares 5,233 Value ($000) $39 Avg Close — Range —
Q2 2015
Shares 5,233 Value ($000) $248 Avg Close — Range —