TETRAPHASE PHARMACEUTICALS I

CUSIP: 88165N105 Class: COMMON STOCK

Rock Springs Capital Management LP's Holding History (CIK: 0001595725)

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

Q4 2017
Shares 950,000 Value ($000) $5,985 Avg Close — Range —
Q3 2017
Shares 950,000 Value ($000) $6,498 Avg Close — Range —
Q2 2017
Shares 698,000 Value ($000) $4,977 Avg Close — Range —
Q1 2017
Shares 698,000 Value ($000) $6,415 Avg Close — Range —
Q4 2016
Shares 698,000 Value ($000) $2,813 Avg Close — Range —
Q3 2016
Shares 662,500 Value ($000) $2,537 Avg Close — Range —
Q2 2016
Shares 425,000 Value ($000) $1,828 Avg Close — Range —
Q1 2016
Shares 400,000 Value ($000) $1,852 Avg Close — Range —
Q4 2015
Shares 200,000 Value ($000) $2,006 Avg Close — Range —
Q2 2015
Shares 43,000 Value ($000) $2,040 Avg Close — Range —
Q1 2015
Shares 102,500 Value ($000) $3,756 Avg Close — Range —