ZIX CORP

CUSIP: 98974P100 Class: COM

MARTINGALE ASSET MANAGEMENT L P's Holding History (CIK: 0000936944)

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

Q1 2019
Shares 139,734 Value ($000) $963 Avg Close — Range —
Q4 2018
Shares 252,151 Value ($000) $1,445 Avg Close — Range —
Q3 2018
Shares 192,250 Value ($000) $1,067 Avg Close — Range —