Company: IONQ
Filing Date: 2025-06-09
Form Type: 424B7
Source: 0001193125-25-137419
Chunk: 10

Company: IonQ, Inc.
Filing Date: 2025-06-09
Form: 424B7
Chunk 10
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 Distribution.” The number of shares of our common stock beneficially owned prior to the offering for each selling stockholder includes all common stock beneficially held by such selling stockholder as of June 9, 2025. The percentages of shares owned before the offering are based on 261,632,972 shares of our common stock outstanding as of June 9, 2025. Beneficial ownership is determined in accordance with the rules of the SEC, which generally provide that a person has beneficial ownership of a security if such person possesses sole or shared voting or investment power over that security or the right to acquire such power within 60 days. Unless otherwise indicated below, to our knowledge, each selling stockholder named in the table has sole voting and investment power with respect to the shares of our common stock beneficially owned by it, except to the extent authority is shared by spouses under applicable law. The inclusion of any shares in this table does not constitute an admission of beneficial ownership for any selling stockholder named below.

|                                       |     | Ownership Before 
 Offering(1)      |         |     |            |   |     | Maximum   
 Shares    
 Being     
 Offered   |         |     | Ownership After 
 Offering(2)     |   |     |   |
| Name of Selling                       
 Stockholder                           |     | Number of        
 Shares           |         |     | Percentage |   |     | Number of 
 Shares    |         |     | Percentage      |   |     |   |
| All selling stockholders, as a group* |     |                  | 903,195 |     |            | * |     |           | 903,195 |     |                 | — |     | — |

| * | Less than 1%. |

| (1) | Consists of the maximum number of shares of our common stock being offered pursuant to this prospectus                                                          
 supplement by each applicable selling stockholder and, if applicable, any other common stock beneficially owned by such selling stockholder as of June 9, 2025. |

| (2) | Assumes the sale of all of the shares offered by the selling stockholders pursuant to this prospectus                                      
 supplement and that the selling stockholders buy or sell no additional shares of our common stock prior to the completion of the offering. |

S-9

PLAN OF DISTRIBUTION The selling stockholders and their permitted assignees and successors-in-interestmay, from time to time, sell any or all of their shares covered hereby on the principal trading market