ZIX CORP

CUSIP: 98974P100 Class: COM

DRIEHAUS CAPITAL MANAGEMENT LLC's Holding History (CIK: 0000938206)

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

Q1 2016
Shares 712,266 Value ($000) $2,799 Avg Close — Range —
Q4 2015
Shares 1,204,665 Value ($000) $6,120 Avg Close — Range —