Company: IONQ
Filing Date: 2025-07-07
Form Type: 424B5
Source: 0001193125-25-155901
Chunk: 11

Company: IonQ, Inc.
Filing Date: 2025-07-07
Form: 424B5
Chunk 11
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. These statements are based upon information known to us as of the date of this prospectus supplement, and although we believe such information forms a reasonable basis for such statements, such information may be limited or incomplete, and our statements should not be read to indicate that we have conducted a thorough inquiry into, or review of, all potentially available relevant information. These statements are inherently uncertain and investors are cautioned not to unduly rely upon these statements. This prospectus supplement, the accompanying prospectus, and the documents incorporated by reference herein and therein may contain market data that we obtain from industry sources. These sources do not guarantee the accuracy or completeness of the information. Although we believe that our industry sources are reliable, we do not independently verify the information. The market data may include projections that are based on a number of other projections. While we believe these projections to be reasonable as of the date of this prospectus supplement, actual results may differ from the projections. S-8

USE OF PROCEEDS

We estimate that our net proceeds from the sale of the securities in this offering, excluding the proceeds, if any, from the exercise of the Warrants, will be
approximately $978.5 million, after deducting underwriting discounts and estimated offering expenses.

We currently intend to use the net proceeds from
this offering, together with our existing cash, cash equivalents and marketable securities for working capital and other general corporate purposes. Additionally, we may use a portion of the net proceeds we receive from this offering to enter into
strategic acquisitions and partnerships.

Pending the specific use of net proceeds as described in this prospectus supplement, we intend to invest the net
proceeds to us from this offering in short- and intermediate-term, interest-bearing obligations, investment-grade instruments, certificates of deposit or direct or guaranteed obligations of the U.S. government.

Our expected use of proceeds from this offering represents our current intentions based on our present plans and business condition. As of the date of this
prospectus supplement, we cannot predict with certainty all of the particular uses for the proceeds to be received upon the completion of this offering or the actual amounts that we will spend on the uses set forth above.

S-9

DILUTION Our net tangible book value as of March 31, 2025 was approximately $726.2 million, or $2.99 per share. Net tangible book value is total assets minus the sum of liabilities and intangible assets. Net tangible book value per share is net tangible book value divided by the total