DRIL-QUIP INC

CUSIP: 262037104 Class: COM

Artisan Partners Limited Partnership's Holding History (CIK: 0001466153)

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

Q1 2014
Shares 70,556 Value ($000) $7,909 Avg Close — Range —
Q4 2013
Shares 69,368 Value ($000) $7,626 Avg Close — Range —
Q3 2013
Shares 336,934 Value ($000) $38,663 Avg Close — Range —
Q2 2013
Shares 327,700 Value ($000) $29,588,033 Avg Close — Range —