Company: IONQ
Filing Date: 2025-10-10
Form Type: 424B5
Source: 0001193125-25-236452
Chunk: 3

Company: IonQ, Inc.
Filing Date: 2025-10-10
Form: 424B5
Chunk 3
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offering varies between this prospectus supplement and the accompanying prospectus, you should rely on the information contained in this prospectus supplement.

You should rely only on the information contained or incorporated by reference in this prospectus supplement and the accompanying prospectus. We have not, and
the underwriter has not, authorized anyone to provide you with different information. If anyone provides you with different or inconsistent information, you should not rely on it. We are not, and the underwriter is not, making an offer of these
securities in any state where the offer is not permitted or in which the person making such offer or solicitation is not qualified to do so or to any person to whom it is unlawful to make such offer or solicitation. You should not assume that the
information in this prospectus supplement, the accompanying prospectus or any document incorporated by reference is accurate as of any date other than the dates of the respective documents. Our business, financial condition, results of operations
and prospects may have changed since that date.

We are not, and the underwriter is not, making an offer to sell the securities in any jurisdiction where
the offer or sale is not permitted. Neither this prospectus supplement nor the accompanying prospectus constitute, and may not be used in connection with, an offer to sell, or a solicitation of an offer to buy, any securities offered by this
prospectus supplement by any person in any jurisdiction in which it is unlawful for such person to make such an offer or solicitation. You must comply with all applicable laws and regulations in force in any applicable jurisdiction and you must
obtain any consent, approval or permission required by you for the purchase, offer or sale of the securities under the laws and regulations in force in the jurisdiction to which you are subject or in which you make your purchase, offer or sale, and
neither we nor the underwriter will have any responsibility therefor.

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PROSPECTUS SUPPLEMENT SUMMARY

This summary highlights selected information that is presented in greater detail elsewhere, or incorporated by reference, in this prospectus supplement, in the accompanying prospectus and in the documents incorporated by reference herein or therein. It does not contain all of the information that may be important to you and your investment decision. Before investing in the securities, you should carefully read this entire prospectus supplement, the accompanying prospectus and the documents incorporated by reference herein or therein, including the matters set forth in the section titled “Risk Factors” and the consolidated financial statements and related