X0609 4 2026-05-08 0 0001357615 KBR, INC. KBR 0002062799 Kavanaugh Mark false C/O KBR, INC. 601 JEFFERSON STREET HOUSTON TX 77002 0 1 0 0 President 0 Common Stock 2026-05-08 4 F 0 81 32.54 D 11839.53 D Represents shares withheld to pay withholding taxes due upon vesting. /s/ Sonia Galindo, Attorney-in-Fact 2026-05-12