NATIONAL OILWELL VARCO INC

CUSIP: 637071101 Class: COM

Chesley Taft & Associates LLC's Holding History (CIK: 0001164632)

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

Q2 2015
Shares 7,105 Value ($000) $343 Avg Close — Range —
Q1 2015
Shares 9,345 Value ($000) $467 Avg Close — Range —
Q4 2014
Shares 9,345 Value ($000) $612 Avg Close — Range —
Q3 2014
Shares 9,345 Value ($000) $711 Avg Close — Range —
Q2 2014
Shares 9,345 Value ($000) $770 Avg Close — Range —
Q1 2014
Shares 9,345 Value ($000) $728 Avg Close — Range —
Q4 2013
Shares 9,460 Value ($000) $752 Avg Close — Range —
Q3 2013
Shares 9,170 Value ($000) $716 Avg Close — Range —
Q2 2013
Shares 4,355 Value ($000) $300 Avg Close — Range —