X0609 4 2026-09-08 0 0001280263 AMBARELLA INC AMBA 0001329724 RICHARDSON DAVID JEFFREY 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 5649 D Ordinary Shares 25812 I by Family Trust 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: David Jeffrey Richardson 2026-09-10