IonQ director sells 904 shares for tax withholding

IonQ, Inc. director Robert T. Cardillo reported a routine tax-related share disposition.

Rhea-AI Filing Summary

IonQ, Inc. director Robert T. Cardillo reported a routine tax-related share disposition. On June 11, 2026, 904 shares of IonQ common stock were sold to cover his tax liability arising from the vesting of restricted stock units. The weighted average sale price was $56.2052 per share, with individual trades executed between $54.78 and $57.30. After this tax-withholding transaction, Cardillo directly held 139,063 shares of IonQ common stock.

Insider Trade Summary

Exercise Price or Tax Liability: 904 shares

Exercise Price or Tax Liability 1 txn

Insider Cardillo Robert T.

Role Director

Type	Security	Shares	Price	Value
Exercise Price or Tax Liability	Common Stock	904	$56.2052	$51K

Holdings After Transaction: Common Stock — 139,063 shares (Direct)

Footnotes (2)

1. F1. The reported securities were sold to satisfy the Reporting Person's tax liability in connection with the vesting of restricted stock units ("RSUs").
2. F2. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $54.78 to $57.3, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Key Figures

Shares disposed for taxes: 904 shares Weighted average sale price: $56.2052 per share Post-transaction holdings: 139,063 shares +1 more

4 metrics

Shares disposed for taxes 904 shares Tax-withholding disposition on June 11, 2026

Weighted average sale price $56.2052 per share Price for 904 shares sold

Post-transaction holdings 139,063 shares Common stock held directly after transaction

Sale price range $54.78–$57.30 per share Individual trades within weighted average

Key Terms

restricted stock units ("RSUs"), weighted average price, tax liability, tax-withholding disposition

4 terms

restricted stock units ("RSUs") financial

"in connection with the vesting of restricted stock units ("RSUs")"

Restricted stock units (RSUs) are a company promise to give an employee shares of stock (or cash equivalent) in the future, but only after certain conditions—usually staying with the company for a set time or hitting performance goals—are met. Investors watch RSUs because when they vest they increase the number of shares outstanding and can lead insiders to sell shares, affecting share price, company dilution and the true cost of employee pay.

weighted average price financial

"The price reported in Column 4 is a weighted average price."

Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.

tax liability financial

"sold to satisfy the Reporting Person's tax liability in connection with the vesting"

tax-withholding disposition financial

"transaction_action": "tax-withholding disposition""

A tax-withholding disposition is an event or transaction—such as selling or transferring securities, exercising options, or receiving compensation—that triggers a requirement to hold back part of the payment and remit it to tax authorities. It matters to investors because it reduces the cash they receive immediately and can change the timing and amount of taxable income, like a cashier taking a portion of your sale proceeds to pay taxes before you get the rest.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What did IonQ (IONQ) director Robert T. Cardillo report in this Form 4?

Robert T. Cardillo reported a sale of 904 IonQ common shares. The transaction satisfied tax obligations from vesting restricted stock units, and is classified as a tax-withholding disposition rather than a discretionary open-market sale.

How many IonQ (IONQ) shares did Robert T. Cardillo sell for tax withholding?

He disposed of 904 IonQ common shares. These shares were sold specifically to cover his tax liability related to vesting restricted stock units, as disclosed in the Form 4 footnotes.

What price did Robert T. Cardillo receive for the IonQ (IONQ) shares?

The reported weighted average sale price was $56.2052 per IonQ share. Individual trades occurred in a range between $54.78 and $57.30, according to the Form 4 footnote disclosure.

How many IonQ (IONQ) shares does Robert T. Cardillo hold after this transaction?

Following the tax-withholding disposition, Cardillo directly holds 139,063 IonQ common shares. This figure reflects his ownership immediately after the 904 shares were sold to satisfy tax obligations.

Was the IonQ (IONQ) Form 4 transaction an open-market sale by Robert T. Cardillo?

The Form 4 characterizes the event as a tax-withholding disposition, not a discretionary open-market sale. Shares were sold to satisfy Cardillo’s tax liability arising from vesting restricted stock units.

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

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Accepted by SEC EDGAR 06/12/2026 - 09:55 PM EDT Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Cardillo Robert T.

(Last) (First) (Middle)

C/O IONQ, INC.

4505 CAMPUS DRIVE

(Street)

COLLEGE PARK MARYLAND 20740

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
IonQ, Inc. [ IONQ ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)	X	Other (specify below)
			Executive Chair, IonQ Federal

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/11/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	06/11/2026		F(1)		904	D	$56.2052(2)	139,063	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. The reported securities were sold to satisfy the Reporting Person's tax liability in connection with the vesting of restricted stock units ("RSUs").

2. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $54.78 to $57.3, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

	/s/ Tyler T. Rosenbaum, Assistant Secretary, by Power of Attorney	06/12/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)