IonQ chair to sell 6,710 shares for tax withholding

IonQ Executive Chair Robert T. Cardillo filed a Rule 144 notice to sell 6,710 vested RSU shares primarily to cover tax withholding obligations.

Rhea-AI Filing Summary

IonQ, Inc. (IONQ) disclosed that Executive Chair Robert T. Cardillo filed a notice to sell common stock under Rule 144. The filing covers 6,710 shares arising from the vesting of restricted stock units on September 10, 2026, with E-Trade Financial Corporation as broker, and states the shares are being sold to cover tax withholding obligations related to equity compensation.

Key Figures

Shares to be sold under Rule 144: 6,710 shares Prior sale on June 11, 2026: 904 shares; $50,809.50 Prior sale on June 16, 2026: 2,547 shares; $152,189.39 +2 more

5 metrics

Shares to be sold under Rule 144 6,710 shares IonQ common stock tied to RSU vesting on September 10, 2026

Prior sale on June 11, 2026 904 shares; $50,809.50 IonQ common stock sold by Robert T. Cardillo in past three months

Prior sale on June 16, 2026 2,547 shares; $152,189.39 IonQ common stock sold by Robert T. Cardillo in past three months

Planned sale date September 10, 2026 Date of RSU vesting and securities to be sold

Date of notice September 10, 2026 Form 144 notice date signed by attorney-in-fact

Key Terms

Rule 144, restricted stock units, Equity Compensation, tax withholding obligations

4 terms

Rule 144 regulatory

"See the definition of "person" in paragraph (a) of Rule 144."

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

restricted stock units financial

"Vesting of Restricted Stock Units | Issuer"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

Equity Compensation financial

"09/10/2026 | Equity Compensation"

Equity compensation is pay given to employees, executives or contractors in the form of company ownership—such as stock, stock options or restricted shares—rather than just cash. It matters to investors because it can align workers' incentives with shareholders (like paying someone in slices of the same pie they help grow), but it also increases the number of shares outstanding and company expenses, affecting ownership percentages and earnings per share.

tax withholding obligations financial

"Shares sold to cover tax withholding obligations in connection"

FAQ

What does the Form 144 filing disclose about IonQ, Inc. (IONQ)?

The Form 144 filing discloses that Executive Chair Robert T. Cardillo intends to sell 6,710 shares of IonQ common stock related to the vesting of restricted stock units on September 10, 2026, with sales described as covering tax withholding obligations.

How many IonQ (IONQ) shares are covered by the new Rule 144 notice?

The Rule 144 notice covers 6,710 shares of IonQ common stock. These shares are associated with the vesting of restricted stock units on September 10, 2026 and are to be sold through E-Trade Financial Corporation in connection with equity compensation.

What prior IonQ (IONQ) share sales by Robert T. Cardillo are reported in the last three months?

The filing reports prior sales of 904 shares on June 11, 2026 for $50,809.50 and 2,547 shares on June 16, 2026 for $152,189.39, both in IonQ common stock, during the past three months.

What is the stated purpose of the IonQ (IONQ) share sale in this Form 144?

The filing states that the shares are being sold to cover tax withholding obligations in connection with the vesting of restricted stock units, indicating the transaction is tied to equity compensation rather than a standalone discretionary sale.

When do the IonQ (IONQ) restricted stock units vest and when will the shares be sold?

The restricted stock units vest on September 10, 2026, and the securities to be sold under the notice are listed with a planned sale date of September 10, 2026, matching the vesting date for these equity compensation awards.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 09/10/2026 - 05:15 PM Accepted by SEC EDGAR 09/10/2026 - 05:15 PM Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0002013580
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	IonQ, Inc.
SEC File Number	001-39694
Address of Issuer	4505 Campus Drive College Park MARYLAND 20740
Phone	301-298-7997
Name of Person for Whose Account the Securities are To Be Sold	Cardillo Robert T.
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Executive Chair, IonQ Federal

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common Stock	E-Trade Financial Corporation PO Box 484 Jersey City NJ 07303-0484	6710	253504	381002314	09/11/2026	NYSE

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common Stock	09/10/2026	Vesting of Restricted Stock Units	Issuer			6710	09/10/2026	Equity Compensation

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
Robert T. Cardillo 4505 Campus Drive College Park MD 20740	Common Stock	06/11/2026	904	50809.50
Robert T. Cardillo 4505 Campus Drive College Park MD 20740	Common Stock	06/16/2026	2547	152189.39

144: Remarks and Signature

Remarks	Shares sold to cover tax withholding obligations in connection with the vesting of restricted stock units.
Date of Notice	09/10/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/Tyler T. Rosenbaum, Assistant Secretary, by Power of Attorney
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)