ZIX CORP

CUSIP: 98974P100 Class: COM

Portolan Capital Management, LLC's Holding History (CIK: 0001350290)

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

Q2 2020
Shares 597,026 Value ($000) $4,119 Avg Close — Range —
Q1 2020
Shares 2,037,118 Value ($000) $8,780 Avg Close — Range —
Q4 2019
Shares 2,702,632 Value ($000) $18,324 Avg Close — Range —
Q3 2019
Shares 1,769,948 Value ($000) $12,814 Avg Close — Range —
Q1 2014
Shares 299,551 Value ($000) $1,240 Avg Close — Range —
Q3 2013
Shares 625,772 Value ($000) $3,066 Avg Close — Range —
Q2 2013
Shares 692,400 Value ($000) $2,929 Avg Close — Range —