X0609 4 2026-09-06 0 0001023731 8X8 INC /DE/ EGHT 0001956959 Denny Laurence false C/O 8X8 INC. 675 CREEKSIDE WAY CAMPBELL CA 95008 0 1 0 0 Chief Legal Officer 0 Common Stock 2026-09-06 4 F 0 6350 1.89 D 613714 D Represents the number of shares of Common Stock that have been withheld by the issuer to satisfy its income tax withholding and remittance obligations in connection with the net settlement of the Restricted Stock Units ("RSUs") and does not represent a sale by the reporting person. Includes 9,433 shares purchased on August 9, 2026 pursuant to the company's Employee Stock Purchase Plan (ESPP). /s/ Cheriese Dickman Attorney-in-Fact for Laurence Denny 2026-09-09