ZIX CORP

CUSIP: 98974P100 Class: COM

Parallax Volatility Advisers, L.P.'s Holding History (CIK: 0001521001)

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

Q2 2019
Shares 29 Value ($000) $0 Avg Close — Range —
Q4 2017
Shares 8,400 Value ($000) $37 Avg Close — Range —