TETRAPHASE PHARMACEUTICALS I

CUSIP: 88165N105 Class: COMMON STOCK

DOW CHEMICAL CO /DE/'s Holding History (CIK: 0000029915)

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

Q2 2019
Shares 65,000 Value ($000) $31 Avg Close — Range —
Q1 2019
Shares 65,000 Value ($000) $87 Avg Close — Range —
Q4 2018
Shares 65,000 Value ($000) $73 Avg Close — Range —
Q3 2018
Shares 65,000 Value ($000) $179 Avg Close — Range —
Q2 2018
Shares 65,000 Value ($000) $232 Avg Close — Range —
Q1 2018
Shares 65,000 Value ($000) $200 Avg Close — Range —
Q4 2017
Shares 65,000 Value ($000) $410 Avg Close — Range —
Q3 2017
Shares 65,000 Value ($000) $445 Avg Close — Range —
Q2 2017
Shares 65,000 Value ($000) $463 Avg Close — Range —
Q1 2017
Shares 65,000 Value ($000) $597 Avg Close — Range —
Q4 2016
Shares 65,000 Value ($000) $249 Avg Close — Range —
Q3 2016
Shares 65,000 Value ($000) $249 Avg Close — Range —
Q2 2016
Shares 65,000 Value ($000) $280 Avg Close — Range —
Q1 2016
Shares 65,000 Value ($000) $301 Avg Close — Range —
Q4 2015
Shares 65,000 Value ($000) $652 Avg Close — Range —
Q3 2015
Shares 65,000 Value ($000) $485 Avg Close — Range —
Q2 2014
Shares 24,700 Value ($000) $333 Avg Close — Range —