X0407 4 2023-05-25 0 0001824920 IonQ, Inc. IONQ 0001885490 Chapman Peter Hume C/O IONQ, INC. 4505 CAMPUS DRIVE COLLEGE PARK MD 20740 1 1 0 0 President and CEO 0 Common Stock 2023-05-25 4 S 0 11726 10.52 D 495900 D Represents the number of shares required to be sold to cover the statutory tax withholding obligations in connection with the vesting of restricted stock units. This sale is mandated by the Issuer's election under its equity incentive plans to require the satisfaction of minimum statutory tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary sale by the Reporting Person. /s/ Jason Minio, Attorney-in-Fact 2023-06-05