COMBIMATRIX CORPORATION

CUSIP: 20009T303 Class: COM

CITADEL ADVISORS LLC's Holding History (CIK: 0001423053)

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

Q3 2015
Shares 11,309 Value ($000) $13 Avg Close — Range —
Q4 2014
Shares 18,072 Value ($000) $23 Avg Close — Range —
Q3 2014
Shares 16,794 Value ($000) $21 Avg Close — Range —
Q2 2013
Shares 10,489 Value ($000) $33 Avg Close — Range —