COMBIMATRIX CORPORATION

CUSIP: 20009T303 Class: COM

MARATHON CAPITAL MANAGEMENT's Holding History (CIK: 0001213206)

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

Q4 2015
Shares 15,000 Value ($000) $10 Avg Close — Range —
Q3 2015
Shares 15,000 Value ($000) $17 Avg Close — Range —
Q2 2015
Shares 15,000 Value ($000) $24 Avg Close — Range —
Q1 2015
Shares 15,000 Value ($000) $29 Avg Close — Range —
Q4 2014
Shares 15,000 Value ($000) $19 Avg Close — Range —
Q3 2014
Shares 10,000 Value ($000) $13 Avg Close — Range —
Q2 2014
Shares 10,000 Value ($000) $21 Avg Close — Range —
Q1 2014
Shares 10,000 Value ($000) $30 Avg Close — Range —
Q4 2013
Shares 10,000 Value ($000) $23 Avg Close — Range —
Q3 2013
Shares 10,000 Value ($000) $29 Avg Close — Range —