ZIX CORP

CUSIP: 98974P100 Class: COM

Northstar Group, Inc.'s Holding History (CIK: 0001631408)

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

Q1 2017
Shares 12,000 Value ($000) $57 Avg Close — Range —
Q4 2016
Shares 12,000 Value ($000) $59 Avg Close — Range —
Q3 2016
Shares 12,000 Value ($000) $49 Avg Close — Range —
Q2 2016
Shares 12,000 Value ($000) $45 Avg Close — Range —
Q1 2016
Shares 12,000 Value ($000) $47 Avg Close — Range —
Q4 2015
Shares 12,000 Value ($000) $61 Avg Close — Range —
Q3 2015
Shares 12,000 Value ($000) $51 Avg Close — Range —
Q2 2015
Shares 12,000 Value ($000) $62 Avg Close — Range —
Q1 2015
Shares 12,000 Value ($000) $47 Avg Close — Range —
Q4 2014
Shares 12,000 Value ($000) $43 Avg Close — Range —