COMBIMATRIX CORPORATION

CUSIP: 20009T501 Class: COM PAR

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

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

Q3 2017
Shares 19,192 Value ($000) $144 Avg Close — Range —
Q2 2017
Shares 19,192 Value ($000) $102 Avg Close — Range —
Q1 2017
Shares 19,192 Value ($000) $105 Avg Close — Range —