NATIONAL OILWELL VARCO INC

CUSIP: 637071101 Class: COM

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

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

Q1 2014
Shares 6,335 Value ($000) $493 Avg Close — Range —
Q4 2013
Shares 38,578 Value ($000) $3,068 Avg Close — Range —
Q3 2013
Shares 36,434 Value ($000) $2,845 Avg Close — Range —
Q2 2013
Shares 33,277 Value ($000) $2,292 Avg Close — Range —