ZOGENIX INC

CUSIP: 98978L204 Class: COM NEW

WESTFIELD CAPITAL MANAGEMENT CO LP's Holding History (CIK: 0001177719)

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

Q1 2019
Shares 375,685 Value ($000) $20,666 Avg Close — Range —
Q4 2018
Shares 536,935 Value ($000) $19,577 Avg Close — Range —