ZOGENIX INC

CUSIP: 98978L105 Class: CMN

BAKER BROS. ADVISORS LP's Holding History (CIK: 0001263508)

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

Q2 2015
Shares 10,028,564 Value ($000) $16,848 Avg Close — Range —
Q1 2015
Shares 2,298,466 Value ($000) $3,149 Avg Close — Range —
Q4 2014
Shares 2,350,400 Value ($000) $3,220 Avg Close — Range —
Q3 2014
Shares 2,350,400 Value ($000) $2,703 Avg Close — Range —
Q2 2014
Shares 2,350,400 Value ($000) $4,724 Avg Close — Range —
Q1 2014
Shares 2,350,400 Value ($000) $6,687 Avg Close — Range —
Q4 2013
Shares 2,751,000 Value ($000) $9,463 Avg Close — Range —
Q3 2013
Shares 2,001,000 Value ($000) $3,704 Avg Close — Range —
Q2 2013
Shares 2,001,000 Value ($000) $3,422 Avg Close — Range —