IonQ (IONQ) CEO disposes 16,120 shares to cover RSU tax liability

Rhea-AI Filing Summary

IonQ, Inc. President and CEO Niccolo de Masi reported a tax-related share disposition. A total of 16,120 shares of common stock were sold on June 11, 2026 at a weighted average price of $56.2052 per share to satisfy his tax liability arising from the vesting of restricted stock units.

The shares were sold in multiple transactions at prices ranging from $54.78 to $57.30. Following this tax-withholding disposition, de Masi directly holds 1,139,547 shares of IonQ common stock. This event reflects a routine tax payment mechanism rather than an open-market investment decision.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider de Masi Niccolo

Role President and CEO

Type	Security	Shares	Price	Value
Tax Withholding	Common Stock	16,120	$56.2052	$906K

Holdings After Transaction: Common Stock — 1,139,547 shares (Direct, null)

Footnotes (1)

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

Tax-withholding shares disposed: 16,120 shares Weighted average sale price: $56.2052 per share Post-transaction holdings: 1,139,547 shares +1 more

4 metrics

Tax-withholding shares disposed 16,120 shares Common stock sold to satisfy tax liability on RSU vesting

Weighted average sale price $56.2052 per share Average price for 16,120 shares sold on June 11, 2026

Post-transaction holdings 1,139,547 shares IonQ common stock held directly by CEO after disposition

Sale price range $54.78–$57.30 per share Multiple transactions within this range on the transaction date

Key Terms

restricted stock units, tax liability, weighted average price, non-derivative

4 terms

restricted stock units financial

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

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.

tax liability financial

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

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.

non-derivative financial

"transaction_type": "non-derivative""

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Form 4 Insider Transactions: What Each Field Means →

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^*

de Masi Niccolo

(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
X	Officer (give title below)		Other (specify below)
	President and CEO

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)		16,120	D	$56.2052(2)	1,139,547	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)

FAQ

What insider transaction did IonQ (IONQ) CEO Niccolo de Masi report?

IonQ CEO Niccolo de Masi reported a disposition of 16,120 common shares. The shares were sold to cover tax liabilities triggered by restricted stock unit vesting, making this a routine tax-withholding event rather than a discretionary open-market trade.

At what price were the IonQ (IONQ) shares for the CEO’s tax withholding sold?

The 16,120 IonQ shares were sold at a weighted average price of $56.2052. According to the filing, individual trades occurred in a price range from $54.78 to $57.30 per share, reflecting multiple transactions executed that day.

How many IonQ (IONQ) shares does CEO Niccolo de Masi hold after this Form 4 transaction?

After the reported tax-withholding disposition, Niccolo de Masi directly holds 1,139,547 IonQ common shares. This post-transaction balance shows that the shares sold for tax purposes represent a small portion of his total direct holdings.

Was the IonQ (IONQ) CEO’s Form 4 transaction an open-market sale?

The Form 4 describes the transaction as a tax-withholding disposition, not a discretionary open-market sale. Shares were sold specifically to satisfy de Masi’s tax liability associated with vesting restricted stock units, a common mechanism for handling equity compensation taxes.

What triggered the IonQ (IONQ) CEO’s need to sell shares for taxes?

The need to sell shares arose from the vesting of restricted stock units granted to Niccolo de Masi. Vesting created a taxable event, and shares were sold to cover the resulting tax liability, as explicitly stated in the Form 4 footnotes.