NATIONAL OILWELL VARCO INC

CUSIP: 637071101 Class: COM

MARKEL GROUP INC.'s Holding History (CIK: 0001096343)

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

Q2 2016
Shares 610,000 Value ($000) $20,526 Avg Close — Range —
Q1 2016
Shares 610,000 Value ($000) $18,971 Avg Close — Range —
Q4 2015
Shares 610,000 Value ($000) $20,429 Avg Close — Range —
Q3 2015
Shares 610,000 Value ($000) $22,966 Avg Close — Range —
Q2 2015
Shares 610,000 Value ($000) $29,451 Avg Close — Range —
Q1 2015
Shares 575,000 Value ($000) $28,744 Avg Close — Range —
Q4 2014
Shares 475,000 Value ($000) $31,127 Avg Close — Range —
Q3 2014
Shares 424,000 Value ($000) $32,266 Avg Close — Range —
Q2 2014
Shares 393,000 Value ($000) $32,364 Avg Close — Range —
Q1 2014
Shares 312,000 Value ($000) $24,295 Avg Close — Range —
Q4 2013
Shares 242,000 Value ($000) $19,246 Avg Close — Range —
Q3 2013
Shares 211,000 Value ($000) $16,481 Avg Close — Range —
Q2 2013
Shares 191,000 Value ($000) $13,160 Avg Close — Range —