TETRAPHASE PHARMACEUTICALS I

CUSIP: 88165N105 Class: COMMON STOCK

EAM Investors, LLC's Holding History (CIK: 0001510989)

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

Q2 2015
Shares 94,321 Value ($000) $4,475 Avg Close — Range —
Q1 2015
Shares 124,525 Value ($000) $4,563 Avg Close — Range —
Q4 2014
Shares 170,240 Value ($000) $6,760 Avg Close — Range —
Q3 2014
Shares 152,595 Value ($000) $3,044 Avg Close — Range —
Q4 2013
Shares 127,495 Value ($000) $1,724 Avg Close — Range —
Q3 2013
Shares 128,312 Value ($000) $1,460 Avg Close — Range —