X0609 4 2026-09-08 0 0001280263 AMBARELLA INC AMBA 0001850596 Breithaupt Chantelle Yvette false 3001 TASMAN DRIVE SANTA CLARA CA 95054 1 0 0 0 0 Ordinary Shares 2026-09-08 4 A 0 3151 0.0 A 8091 D Effective as of September 8, 2026, the Board of Directors approved an annual restricted stock unit grant of 3,151 Ordinary Shares to each independent director. The RSU grant vests as to 1/4th of the Ordinary Shares each three months following the vesting start date of September 15, 2026, so as to be 100% vested on September 15, 2027, subject to continued service with the Company. By: /s/Michael Morehead, Attorney-in-Fact, For: Chantelle Breithaupt 2026-09-10