IonQ director sells 904 shares for tax withholding

IonQ, Inc. director and Executive Chair of IonQ Federal, Robert T. Cardillo, reported a small tax-related share disposition.

Rhea-AI Filing Summary

IonQ, Inc. director and Executive Chair of IonQ Federal, Robert T. Cardillo, reported a small tax-related share disposition. On the vesting of restricted stock units, 904 shares of common stock were sold to cover his tax liability at a weighted average price of $34.802 per share, with individual sales ranging from $33.69 to $35.87. After these transactions, he continues to hold 139,967 shares directly, indicating this was a routine withholding event rather than a large change in ownership.

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	$34.802	$31K

Holdings After Transaction: Common Stock — 139,967 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 $33.69 to $35.87, 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.

FAQ

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

What insider transaction did IonQ (IONQ) director Robert T. Cardillo report?

Robert T. Cardillo reported a small tax-related share disposition. He sold 904 IonQ common shares to satisfy tax obligations from restricted stock unit vesting, a routine event rather than a discretionary open-market sale.

At what price were Robert T. Cardillo’s IonQ (IONQ) shares sold?

The 904 IonQ shares were sold at a weighted average price of $34.802. Individual trades occurred in multiple transactions, with prices ranging from $33.69 to $35.87 per share, according to the Form 4 footnote.

How many IonQ (IONQ) shares does Robert T. Cardillo hold after this Form 4 transaction?

Following the tax-related share sale, Robert T. Cardillo directly holds 139,967 IonQ common shares. This shows the 904 shares sold for tax withholding represent a very small portion of his overall ownership position.

Was Robert T. Cardillo’s IonQ (IONQ) Form 4 transaction an open-market sale?

The Form 4 classifies the transaction as a tax-withholding disposition, not a discretionary open-market sale. Shares were sold specifically to cover Cardillo’s tax liability arising from the vesting of restricted stock units.

What does the tax-withholding disposition mean in IonQ (IONQ) director’s Form 4?

A tax-withholding disposition means shares are sold or delivered to cover taxes owed when equity awards vest. In this case, Cardillo’s 904 shares were sold to pay tax on vested RSUs, a common administrative process for equity compensation.

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

Form 4 Insider Transactions: What Each Field Means →

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Accepted by SEC EDGAR 03/13/2026 - 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 MD 20740

(City) (State) (Zip)

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

3. Date of Earliest Transaction (Month/Day/Year)
03/11/2026

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

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

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

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	03/11/2026		F(1)		904	D	$34.802(2)	139,967	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 $33.69 to $35.87, 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	03/13/2026
	** 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.