LUMINEX CORP DEL

CUSIP: 55027E102 Class: COMMON STOCK

ALTA CAPITAL MANAGEMENT LLC/'s Holding History (CIK: 0001093589)

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

Q2 2015
Shares 10,252 Value ($000) $176 Avg Close — Range —
Q1 2015
Shares 13,310 Value ($000) $212 Avg Close — Range —
Q4 2014
Shares 15,705 Value ($000) $294 Avg Close — Range —
Q3 2014
Shares 15,705 Value ($000) $306 Avg Close — Range —
Q2 2014
Shares 16,555 Value ($000) $283 Avg Close — Range —
Q1 2014
Shares 16,030 Value ($000) $290 Avg Close — Range —
Q4 2013
Shares 10,455 Value ($000) $202 Avg Close — Range —