Company: IONQ
Filing Date: 2025-06-09
Form Type: 424B7
Source: 0001193125-25-137419
Chunk: 4

Company: IonQ, Inc.
Filing Date: 2025-06-09
Form: 424B7
Chunk 4
---
 IonQ continuing as the surviving corporation following the merger,
becoming a wholly owned subsidiary of dMY, and the separate corporate existence of the Merger Sub ceased (the “Business Combination”). Following the closing of the Business Combination, dMY changed its name to IonQ, Inc., and Legacy IonQ
changed its name to IonQ Quantum, Inc.

Our principal executive offices are located at 4505 Campus Drive, College Park, MD 20740, and our
telephone number is (301) 298-7997. Our corporate website address is https://ionq.com. Information contained on or accessible through our website is not a part of this prospectus, and the inclusion of our
website address in this prospectus is an inactive textual reference only.

S-2

THE OFFERING

| Issuer | IonQ, Inc. |

| Common stock offered by the selling stockholders | Up to 903,195 shares of our common stock. |

| Common stock outstanding prior to this offering | 261,632,972 shares of our common stock (as of June 9, 2025). The number of outstanding shares of our common stock will not change as a result of this offering. |

| Use of proceeds | The selling stockholders will receive all of the proceeds from the sale, if any, of shares of our common stock in this offering. We will not receive any proceeds from the sale of shares of our common stock by the selling stockholders. See the 
 section titled “Use of Proceeds” for more information.                                                                                                                                                                                             |

| Risk factors | Investing in our common stock involves significant risks. Before making an investment decision, please read the information contained in and incorporated by reference under the heading “Risk Factors” on page S-4 of this prospectus supplement and on page 4 of the accompanying prospectus, and under similar headings in other documents that are incorporated by reference into this prospectus supplement and the accompanying 
 prospectus.                                                                                                                                                                                                                                                                                                                                                                                                                           |

| NYSE symbol | “IONQ” |

S-3

RISK FACTORS

Investing in our securities involves a high degree of risk. Before making a decision to invest in our securities, in addition to carefully considering the other information contained in this prospectus supplement, in the accompanying prospectus and in the documents incorporated by reference herein or therein, you should carefully consider the risks described below, as well as the risks discussed under the caption “Risk Factors” contained in our most recent Annual Report on Form 10-Kand any