DYNAVAX TECHNOLOGIES CORP

CUSIP: 268158102 Class: CMN

GROUP ONE TRADING, L.P.'s Holding History (CIK: 0000932540)

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

Q4 2014
Shares 14,401 Value ($000) $243 Avg Close — Range —
Q3 2014
Shares 36,437 Value ($000) $52 Avg Close — Range —
Q4 2013
Shares 29,795 Value ($000) $58 Avg Close — Range —
Q3 2013
Shares 68,857 Value ($000) $83 Avg Close — Range —
Q2 2013
Shares 179,064 Value ($000) $197 Avg Close — Range —