Company: IONQ
Filing Date: 2025-10-10
Form Type: 424B5
Source: 0001193125-25-236452
Chunk: 29

Company: IonQ, Inc.
Filing Date: 2025-10-10
Form: 424B5
Chunk 29
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 pursuant to Rule 10b5-1 under the Exchange Act that is existing on the date of the prospectus supplement and which has been provided to the underwriter.

The underwriter, in its sole discretion, may release the securities subject to any of the lock-up agreements described
above, in whole or in part at any time.

S-21

We have agreed to indemnify the underwriter against certain liabilities, including liabilities under the
Securities Act, or to contribute to payments the underwriters may be required to make in respect of those liabilities.

In connection with this offering,
the underwriter may engage in stabilizing transactions, which involves making bids for, purchasing and selling shares of common stock in the open market for the purpose of preventing or retarding a decline in the market price of the common stock
while this offering is in progress. These stabilizing transactions may include making short sales of the common stock, which involves the sale by the underwriter of a greater number of shares of common stock than it is required to purchase in this
offering, and purchasing shares of common stock on the open market to cover positions created by short sales. Short sales may be “covered” shorts, which are short positions in an amount not greater than the underwriter’s option to
purchase additional shares referred to above, or may be “naked” shorts, which are short positions in excess of that amount. The underwriter may close out any covered short position either by exercising its option to purchase additional
shares, in whole or in part, or by purchasing shares in the open market. In making this determination, the underwriter will consider, among other things, the price of shares available for purchase in the open market compared to the price at which
the underwriter may purchase shares through the option to purchase additional shares. A naked short position is more likely to be created if the underwriter is concerned that there may be downward pressure on the price of the common stock in the
open market that could adversely affect investors who purchase in this offering. To the extent that the underwriter creates a naked short position, it will purchase shares in the open market to cover the position.

The underwriter has advised us that, pursuant to Regulation M of the Securities Act of 1933, they may also engage in other activities that stabilize,
maintain or otherwise affect the price of the common stock, including the imposition of penalty bids. This means that if the representatives of the underwriters purchase common stock in the open market in stabilizing transactions or to