COMBIMATRIX CORPORATION

CUSIP: 20009T303 Class: COM

NORTHERN TRUST CORP's Holding History (CIK: 0000073124)

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

Q3 2015
Shares 10,740 Value ($000) $12 Avg Close — Range —
Q2 2015
Shares 10,322 Value ($000) $17 Avg Close — Range —
Q1 2015
Shares 12,646 Value ($000) $24 Avg Close — Range —
Q4 2014
Shares 12,692 Value ($000) $17 Avg Close — Range —