ZIX CORP

CUSIP: 98974P100 Class: COM

MACKAY SHIELDS LLC's Holding History (CIK: 0000061227)

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

Q1 2021
Shares 138,700 Value ($000) $1,047 Avg Close — Range —
Q4 2020
Shares 246,700 Value ($000) $2,129 Avg Close — Range —
Q3 2020
Shares 445,100 Value ($000) $2,599 Avg Close — Range —
Q2 2020
Shares 405,000 Value ($000) $2,795 Avg Close — Range —
Q1 2020
Shares 99,800 Value ($000) $430 Avg Close — Range —
Q4 2019
Shares 32,200 Value ($000) $218 Avg Close — Range —
Q3 2019
Shares 155,258 Value ($000) $1,124 Avg Close — Range —
Q2 2019
Shares 332,558 Value ($000) $3,023 Avg Close — Range —
Q1 2019
Shares 177,568 Value ($000) $1,222 Avg Close — Range —
Q4 2018
Shares 120,268 Value ($000) $689 Avg Close — Range —
Q3 2018
Shares 125,400 Value ($000) $696 Avg Close — Range —
Q2 2018
Shares 134,900 Value ($000) $727 Avg Close — Range —
Q1 2018
Shares 176,400 Value ($000) $753 Avg Close — Range —