ZIX CORP

CUSIP: 98974P100 Class: COM

Yorktown Management & Research Co Inc's Holding History (CIK: 0001313559)

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

Q1 2014
Shares 54,000 Value ($000) $224 Avg Close — Range —
Q4 2013
Shares 54,000 Value ($000) $246 Avg Close — Range —
Q3 2013
Shares 54,000 Value ($000) $264 Avg Close — Range —