X0304 4 2011-09-08 false 0000076321 PARKER DRILLING CO /DE/ PKD 0001472030 Schlom Philip A 5 GREENWAY PLAZA, SUITE 100 HOUSTON TX 77046 false true false false PAO/Controller 401K Common Stock 4386.8783 I 401k Common Stock 2011-09-08 4 F false 3527 5.625 D 42621 D Shares of PKD common stock in 401(k) as of September 8, 2011. Number of shares tendered to Company to satisfy tax liability of Reporting Person upon partial vesting of restricted stock grant. Philip A. Schlom 2011-09-12