TETRAPHASE PHARMACEUTICALS I

CUSIP: 88165N105 Class: COMMON STOCK

Parallax Volatility Advisers, L.P.'s Holding History (CIK: 0001521001)

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

Q2 2018
Shares 1,600 Value ($000) $6 Avg Close — Range —
Q1 2018
Shares 1,600 Value ($000) $5 Avg Close — Range —
Q4 2017
Shares 9,786 Value ($000) $62 Avg Close — Range —
Q3 2017
Shares 2,100 Value ($000) $14 Avg Close — Range —
Q2 2017
Shares 2,600 Value ($000) $19 Avg Close — Range —
Q1 2017
Shares 2,600 Value ($000) $24 Avg Close — Range —
Q4 2016
Shares 2,600 Value ($000) $10 Avg Close — Range —
Q3 2016
Shares 2,600 Value ($000) $10 Avg Close — Range —
Q2 2016
Shares 2,600 Value ($000) $11 Avg Close — Range —
Q1 2016
Shares 3,321 Value ($000) $15 Avg Close — Range —