X0609 4 2026-05-20 0 0001357615 KBR, INC. KBR 0001235129 MOORE JACK B false C/O KBR, INC. 601 JEFFERSON STREET HOUSTON TX 77002 1 0 0 0 0 Common Stock 2026-05-20 4 P 0 4000 31.4414 A 54351.81 D The price reported in Table I, Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $31.44 to $31.458, inclusive. The reporting person undertakes to provide KBR, Inc., any security holder of KBR, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. The total number reported includes 192.81 additional shares resulting from an automatic broker-administered dividend reinvestment plan. /s/ Sonia Galindo, Attorney-in-Fact 2026-05-21