ZIX CORP

CUSIP: 98974P100 Class: COM

WELLINGTON MANAGEMENT GROUP LLP's Holding History (CIK: 0000902219)

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

Q4 2015
Shares 840,000 Value ($000) $4,268 Avg Close — Range —
Q3 2015
Shares 2,328,914 Value ($000) $9,804 Avg Close — Range —
Q2 2015
Shares 4,092,067 Value ($000) $21,157 Avg Close — Range —
Q1 2015
Shares 5,228,022 Value ($000) $20,547 Avg Close — Range —
Q4 2014
Shares 6,579,422 Value ($000) $23,686 Avg Close — Range —
Q3 2014
Shares 6,282,785 Value ($000) $21,487 Avg Close — Range —
Q2 2014
Shares 5,901,009 Value ($000) $20,181 Avg Close — Range —
Q1 2014
Shares 5,273,754 Value ($000) $21,834 Avg Close — Range —
Q4 2013
Shares 4,362,712 Value ($000) $19,894 Avg Close — Range —
Q3 2013
Shares 3,772,412 Value ($000) $18,447 Avg Close — Range —
Q2 2013
Shares 4,451,100 Value ($000) $18,828 Avg Close — Range —