PARKER DRILLING CO

CUSIP: 701081101 Class: COMMON STOCK

AMERICAN CENTURY COMPANIES INC's Holding History (CIK: 0000748054)

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

Q2 2015
Shares 63,120 Value ($000) $210 Avg Close — Range —
Q3 2013
Shares 197,991 Value ($000) $1,129 Avg Close — Range —
Q2 2013
Shares 495,045 Value ($000) $2,465 Avg Close — Range —