ZIX CORP

CUSIP: 98974P100 Class: COM

Granahan Investment Management, LLC's Holding History (CIK: 0001026710)

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

Q4 2014
Shares 392,098 Value ($000) $1,412 Avg Close — Range —
Q3 2014
Shares 535,308 Value ($000) $1,831 Avg Close — Range —
Q2 2014
Shares 539,097 Value ($000) $1,844 Avg Close — Range —
Q1 2014
Shares 635,777 Value ($000) $2,632 Avg Close — Range —
Q4 2013
Shares 517,157 Value ($000) $2,358 Avg Close — Range —
Q3 2013
Shares 246,400 Value ($000) $1,207 Avg Close — Range —