PARKER DRILLING CO

CUSIP: 701081101 Class: COMMON STOCK

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

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

Q3 2014
Shares 5,365,071 Value ($000) $26,503 Avg Close — Range —
Q2 2014
Shares 5,944,380 Value ($000) $38,757 Avg Close — Range —
Q1 2014
Shares 4,938,825 Value ($000) $35,016 Avg Close — Range —
Q4 2013
Shares 5,133,668 Value ($000) $41,737 Avg Close — Range —
Q3 2013
Shares 5,099,030 Value ($000) $29,064 Avg Close — Range —
Q2 2013
Shares 5,136,400 Value ($000) $25,579,272 Avg Close — Range —