TETRAPHASE PHARMACEUTICALS I

CUSIP: 88165N105 Class: COMMON STOCK

GROUP ONE TRADING, L.P.'s Holding History (CIK: 0000932540)

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

Q2 2019
Shares 17,722 Value ($000) $9 Avg Close Range
Q1 2019
Shares 7,222 Value ($000) $10 Avg Close Range
Q4 2018
Shares 6 Value ($000) $0 Avg Close Range
Q3 2018
Shares 22 Value ($000) $0 Avg Close Range
Q2 2018
Shares 90,131 Value ($000) $322 Avg Close Range
Q1 2018
Shares 15,435 Value ($000) $47 Avg Close Range
Q4 2017
Shares 70,178 Value ($000) $442 Avg Close Range
Q3 2017
Shares 121,364 Value ($000) $830 Avg Close Range
Q1 2017
Shares 21,250 Value ($000) $195 Avg Close Range
Q4 2016
Shares 1,018 Value ($000) $4 Avg Close Range
Q3 2016
Shares 31,929 Value ($000) $122 Avg Close Range
Q2 2016
Shares 60,277 Value ($000) $259 Avg Close Range
Q1 2016
Shares 74,840 Value ($000) $347 Avg Close Range
Q4 2015
Shares 47,482 Value ($000) $476 Avg Close Range
Q2 2015
Shares 19,696 Value ($000) $934 Avg Close Range
Q1 2015
Shares 9,172 Value ($000) $336 Avg Close Range
Q4 2014
Shares 5,364 Value ($000) $213 Avg Close Range
Q2 2014
Shares 11,093 Value ($000) $150 Avg Close Range
Q1 2014
Shares 9,956 Value ($000) $108 Avg Close Range