TETRAPHASE PHARMACEUTICALS I

CUSIP: 88165N105 Class: COMMON STOCK

TOWER BRIDGE ADVISORS's Holding History (CIK: 0001278249)

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

Q2 2019
Shares 15,000 Value ($000) $7,205 Avg Close — Range —
Q1 2019
Shares 15,000 Value ($000) $20,100 Avg Close — Range —
Q4 2018
Shares 15,000 Value ($000) $16,950 Avg Close — Range —