X0609 4 2026-04-24 0000917273 RAMBUS INC RMBS 0001480603 Rao Meera false C/O RAMBUS INC. 4453 NORTH FIRST STREET, SUITE 100 SAN JOSE CA 95134 true false false false true Common Stock 2026-04-24 4 S false 2972 150.3 D 19974 D The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted on November 14, 2025. All shares sold at an exact price of $150.30. /s/ Brian Wu, by power of attorney 2026-04-27