ZIX CORP

CUSIP: 98974P100 Class: COM

MUHLENKAMP & CO INC's Holding History (CIK: 0001133219)

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

Q4 2015
Shares 10,710 Value ($000) $54 Avg Close — Range —
Q3 2015
Shares 10,710 Value ($000) $45 Avg Close — Range —
Q2 2015
Shares 13,055 Value ($000) $67 Avg Close — Range —
Q1 2015
Shares 11,495 Value ($000) $45 Avg Close — Range —
Q4 2014
Shares 13,295 Value ($000) $48 Avg Close — Range —
Q3 2014
Shares 13,295 Value ($000) $45 Avg Close — Range —
Q2 2014
Shares 13,295 Value ($000) $45 Avg Close — Range —