ZOGENIX INC

CUSIP: 98978L204 Class: COM NEW

DIMENSIONAL FUND ADVISORS LP's Holding History (CIK: 0000354204)

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

Q4 2021
Shares 657,881 Value ($000) $10,691 Avg Close — Range —
Q3 2021
Shares 541,876 Value ($000) $8,231 Avg Close — Range —
Q2 2021
Shares 792,946 Value ($000) $13,703 Avg Close — Range —
Q1 2021
Shares 579,496 Value ($000) $11,311 Avg Close — Range —
Q4 2020
Shares 584,032 Value ($000) $11,675 Avg Close — Range —
Q3 2020
Shares 586,106 Value ($000) $10,509 Avg Close — Range —
Q2 2020
Shares 548,815 Value ($000) $14,822 Avg Close — Range —
Q1 2020
Shares 628,801 Value ($000) $15,551 Avg Close — Range —
Q4 2019
Shares 674,949 Value ($000) $35,185 Avg Close — Range —
Q3 2019
Shares 757,912 Value ($000) $30,349 Avg Close — Range —
Q2 2019
Shares 641,409 Value ($000) $30,647 Avg Close — Range —
Q1 2019
Shares 560,475 Value ($000) $30,831 Avg Close — Range —
Q4 2018
Shares 470,460 Value ($000) $17,152 Avg Close — Range —
Q3 2018
Shares 232,458 Value ($000) $11,530 Avg Close — Range —
Q2 2018
Shares 243,344 Value ($000) $10,756 Avg Close — Range —
Q1 2018
Shares 456,131 Value ($000) $18,268 Avg Close — Range —
Q4 2017
Shares 458,404 Value ($000) $18,363 Avg Close — Range —
Q3 2017
Shares 461,164 Value ($000) $16,125 Avg Close — Range —
Q2 2017
Shares 464,761 Value ($000) $6,739 Avg Close — Range —
Q1 2017
Shares 410,641 Value ($000) $4,455 Avg Close — Range —
Q4 2016
Shares 216,814 Value ($000) $2,634 Avg Close — Range —
Q3 2016
Shares 107,680 Value ($000) $1,231 Avg Close — Range —
Q2 2016
Shares 69,396 Value ($000) $559 Avg Close — Range —
Q1 2016
Shares 34,765 Value ($000) $321 Avg Close — Range —
Q4 2015
Shares 30,223 Value ($000) $445 Avg Close — Range —