X0306 4/A 2018-08-07 2018-08-08 false 0000076321 PARKER DRILLING CO /DE/ PKD 0001721525 Dockray Nathaniel C 5 GREENWAY PLAZA, SUITE 100 HOUSTON TX 77046 false true false false Chief Accounting Officer Common Stock 2018-08-07 4 M false 556 0 A 3509 D Common Stock 2018-08-07 4 F false 136 0 D 3373 D Restricted Stock Units 0 2018-08-07 4 M false 556 0 D 2018-08-07 2018-08-07 Common Stock 556 6344 D The original Form 4 filed on August 8, 2018 is amended by this Form 4/A to reflect the correct number of restricted stock units disposed of, the correct number of restricted stock units owned after such transaction, the correct number of shares of common stock acquired, the correct number of shares of common stock disposed of and the correct number of shares of common stock owned after such transactions. Each restricted stock unit represents a contingent right to receive one share of PKD common stock. Nathaniel Dockray 2018-08-13