144 0001885490 XXXXXXXX LIVE 0001824920 IonQ, Inc. 001-39694 4505 Campus Drive College Park MD 20740 301-298-7997 Chapman Peter Hume Officer Director Common Stock E-TRADE Financial Corporation

PO Box 484 Jersey City NJ 07303-0484

85510 3523868 296841308 08/15/2025 NYSE Common Stock 08/14/2025 Vesting of equity awards - See Remarks Issuer N 85510 08/14/2025 Equity Compensation N Peter Hume Chapman

c/o IonQ, Inc. 4505 Campus Drive COLLEGE PARK MD 20740

Common Stock 06/20/2025 1497311 59789125.54 Peter Hume Chapman

c/o IonQ, Inc. 4505 Campus Drive COLLEGE PARK MD 20740

Common Stock 06/17/2025 910740 34406573.24 Peter Hume Chapman

c/o IonQ, Inc. 4505 Campus Drive COLLEGE PARK MD 20740

Common Stock 06/16/2025 3581193 136536564.32 Peter Hume Chapman

c/o IonQ, Inc. 4505 Campus Drive COLLEGE PARK MD 20740

Common Stock 06/11/2025 11965 497688.96 Shares sold to cover tax withholding obligations in connection with the vesting of restricted stock units and performance-based restricted stock units. 08/15/2025 /s/ Peter Hume Chapman