X0306 4 2021-10-28 0 0001042893 DRIL-QUIP INC DRQ 0001626272 Bird Jeffrey J. 6401 NORTH ELDRIDGE PARKWAY HOUSTON TX 77041 0 1 0 0 President & COO Common Stock 2021-10-28 4 A 0 42480 0.00 A 118407 D Common Stock 2021-10-28 4 A 0 10443 0.00 A 128850 D Common Stock 2021-10-29 4 S 0 17216 22.82 D 111634 D Common Stock 2021-10-29 4 S 0 136 23.40 D 111498 D These shares vested pursuant to the terms of performance unit awards granted on October 28, 2018. Sales to cover tax obligations on vested restricted stock and performance unit awards pursuant to a Rule 10b5-1 sales plan adopted on May 19, 2021. The price in column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $22.28 to $23.37 inclusive. The reporting person has provided to the issuer and will provide any security holder of the issuer, or the SEC staff, upon request, information regarding the number of shares sold at each price within the range. The price in column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $23.38 to $23.41 inclusive. The reporting person has provided to the issuer and will provide any security holder of the issuer, or the SEC staff, upon request, information regarding the number of shares sold at each price within the range. /s/ James C. Webster Attorney-in-fact 2021-11-01