NATIONAL OILWELL VARCO INC

CUSIP: 637071101 Class: COM

Douglass Winthrop Advisors, LLC's Holding History (CIK: 0001308527)

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

Q4 2014
Shares 5,360 Value ($000) $351 Avg Close — Range —
Q3 2014
Shares 6,750 Value ($000) $514 Avg Close — Range —