ZIX CORP

CUSIP: 98974P100 Class: COM

WATERS PARKERSON & CO., LLC's Holding History (CIK: 0001222993)

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

Q4 2017
Shares 12,750 Value ($000) $56 Avg Close — Range —
Q3 2017
Shares 12,750 Value ($000) $62 Avg Close — Range —
Q2 2017
Shares 12,750 Value ($000) $73 Avg Close — Range —
Q1 2017
Shares 12,750 Value ($000) $61 Avg Close — Range —
Q4 2016
Shares 12,750 Value ($000) $63 Avg Close — Range —