ZIX CORP

CUSIP: 98974P100 Class: COM

DIMENSIONAL FUND ADVISORS LP's Holding History (CIK: 0000354204)

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

Q3 2021
Shares 840,275 Value ($000) $5,940 Avg Close — Range —
Q2 2021
Shares 851,020 Value ($000) $6,000 Avg Close — Range —
Q1 2021
Shares 873,390 Value ($000) $6,593 Avg Close — Range —
Q4 2020
Shares 739,988 Value ($000) $6,386 Avg Close — Range —
Q3 2020
Shares 649,984 Value ($000) $3,796 Avg Close — Range —
Q2 2020
Shares 663,989 Value ($000) $4,581 Avg Close — Range —
Q1 2020
Shares 1,279,362 Value ($000) $5,514 Avg Close — Range —
Q4 2019
Shares 1,684,454 Value ($000) $11,421 Avg Close — Range —
Q3 2019
Shares 2,215,639 Value ($000) $16,041 Avg Close — Range —
Q2 2019
Shares 2,537,152 Value ($000) $23,062 Avg Close — Range —
Q1 2019
Shares 2,541,950 Value ($000) $17,488 Avg Close — Range —
Q4 2018
Shares 2,417,344 Value ($000) $13,851 Avg Close — Range —
Q3 2018
Shares 2,390,607 Value ($000) $13,268 Avg Close — Range —
Q2 2018
Shares 2,332,956 Value ($000) $12,575 Avg Close — Range —
Q1 2018
Shares 2,314,493 Value ($000) $9,883 Avg Close — Range —
Q4 2017
Shares 2,291,651 Value ($000) $10,037 Avg Close — Range —
Q3 2017
Shares 2,257,349 Value ($000) $11,038 Avg Close — Range —
Q2 2017
Shares 2,202,753 Value ($000) $12,534 Avg Close — Range —
Q1 2017
Shares 2,048,744 Value ($000) $9,854 Avg Close — Range —
Q4 2016
Shares 1,860,427 Value ($000) $9,191 Avg Close — Range —
Q3 2016
Shares 1,788,100 Value ($000) $7,331 Avg Close — Range —
Q2 2016
Shares 1,782,445 Value ($000) $6,684 Avg Close — Range —
Q1 2016
Shares 1,782,445 Value ($000) $7,005 Avg Close — Range —
Q4 2015
Shares 1,606,779 Value ($000) $8,162 Avg Close — Range —
Q3 2015
Shares 1,533,420 Value ($000) $6,456 Avg Close — Range —
Q2 2015
Shares 1,498,113 Value ($000) $7,745 Avg Close — Range —
Q1 2015
Shares 1,512,808 Value ($000) $5,945 Avg Close — Range —
Q4 2014
Shares 1,455,129 Value ($000) $5,238 Avg Close — Range —
Q3 2014
Shares 1,364,807 Value ($000) $4,668 Avg Close — Range —
Q2 2014
Shares 1,324,764 Value ($000) $4,531 Avg Close — Range —
Q1 2014
Shares 1,294,684 Value ($000) $5,360 Avg Close — Range —
Q4 2013
Shares 1,287,981 Value ($000) $5,873 Avg Close — Range —
Q3 2013
Shares 1,307,038 Value ($000) $6,391 Avg Close — Range —
Q2 2013
Shares 1,321,717 Value ($000) $5,591 Avg Close — Range —