X0609 4 2026-06-17 0001824920 IonQ, Inc. IONQ 0001353810 TOLEDANO GABRIELLE B false C/O IONQ, INC. 4505 CAMPUS DRIVE COLLEGE PARK MD 20740 true false false false true Common Stock 2026-06-17 4 A false 4526 0 A 13911 D Common Stock 2026-06-18 4 S false 2757 55.01 D 11154 D Represents a restricted stock unit ("RSU") award. The RSUs will vest in full on the earlier of (i) the day before the date of the following year's Annual Meeting or (ii) June 17, 2027 subject in all cases to the Reporting Person's continued service as a member of the Board of Directors through such vesting date. The transactions reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on September 11, 2025. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $53.79 to $56.63, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. /s/ Tyler T. Rosenbaum, Assistant Secretary, by Power of Attorney 2026-06-22