D-Wave exec has 1,544 shares withheld for taxes

D-Wave Quantum’s CHRO had shares withheld to cover taxes on RSU vesting, leaving a substantial RSU-based equity position.

Rhea-AI Filing Summary

D-Wave Quantum Inc. (QBTS) reported that executive vice president and chief human resources officer Sophie C. Ames had 1,544 shares of common stock withheld on September 15, 2026 to satisfy tax withholding requirements related to vesting restricted stock units. After this withholding, she holds 563,615 shares directly, including 533,109 unvested RSUs. No transactions were reported under a Rule 10b5-1 trading plan.

Insider Trade Summary

Tax Withholding: 1,544 shares

Tax Withholding 1 txn

Insider AMES SOPHIE C

Role Exec. Vice President & CHRO

Type	Security	Shares	Price	Value
Tax Withholding	Common Stock, par value $0.0001 per share ("Common Stock") F1, F2	1,544	$16.83	$26K

Holdings After Transaction: Common Stock, par value $0.0001 per share ("Common Stock") — 563,615 shares (Direct)

Footnotes (2)

1. F1. Represents shares of Common Stock withheld by the Issuer to satisfy tax withholding requirements in connection with the vesting of restricted stock units ("RSUs").
2. F2. Includes 533,109 unvested RSUs.

Key Figures

Shares withheld for taxes: 1,544 shares Withholding price per share: $16.83 per share Shares held after transaction: 563,615 shares +1 more

4 metrics

Shares withheld for taxes 1,544 shares Shares of QBTS common stock withheld on September 15, 2026 to satisfy tax withholding requirements on RSU vesting

Withholding price per share $16.83 per share Value reported for the 1,544 shares withheld for tax withholding requirements

Shares held after transaction 563,615 shares Direct QBTS holdings of Sophie C. Ames following the September 15, 2026 transaction

Unvested RSUs included in holdings 533,109 RSUs Unvested restricted stock units included within the 563,615 shares reported as held after the transaction

Key Terms

restricted stock units ("RSUs"), tax withholding requirements, Common Stock, par value $0.0001 per share

3 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.

tax withholding requirements financial

"withheld by the Issuer to satisfy tax withholding requirements"

Common Stock, par value $0.0001 per share financial

"Common Stock, par value $0.0001 per share ("Common Stock")"

FAQ

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

What insider transaction did D-Wave Quantum (QBTS) disclose for Sophie C. Ames?

The company disclosed that Sophie C. Ames had 1,544 QBTS shares withheld on September 15, 2026 to satisfy tax withholding obligations triggered by the vesting of restricted stock units (RSUs).

Was the QBTS insider transaction by Sophie C. Ames an open-market sale?

No. The filing states the 1,544 shares represent stock withheld by D-Wave Quantum to satisfy tax withholding requirements upon RSU vesting, rather than an open-market sale.

How many D-Wave Quantum (QBTS) shares does Sophie C. Ames hold after this transaction?

After the September 15, 2026 withholding, Sophie C. Ames directly holds 563,615 QBTS shares, which the filing notes includes 533,109 unvested RSUs.

Does the D-Wave Quantum (QBTS) Form 4 mention a Rule 10b5-1 trading plan?

No. The Form 4 indicates that no Rule 10b5-1 trading plan is reported for this transaction; it is described instead as shares withheld to cover tax liabilities on RSU vesting.

What price per share is associated with the QBTS shares withheld for taxes?

The Form 4 reports a value of $16.83 per share for the 1,544 shares of D-Wave Quantum common stock that were withheld to satisfy tax withholding requirements tied to RSU vesting.

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

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Available on EDGAR 09/16/2026 - 06:08 PM Accepted by SEC EDGAR 09/16/2026 - 06:08 PM 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^*

AMES SOPHIE C

(Last) (First) (Middle)

2650 EAST BAYSHORE ROAD

(Street)

PALO ALTO CALIFORNIA 94303

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
D-Wave Quantum Inc. [ QBTS ]

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

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Exec. Vice President & CHRO

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/15/2026

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, par value $0.0001 per share ("Common Stock")	09/15/2026		F		1,544(1)	D	$16.83	563,615(2)	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. Represents shares of Common Stock withheld by the Issuer to satisfy tax withholding requirements in connection with the vesting of restricted stock units ("RSUs").

2. Includes 533,109 unvested RSUs.

Remarks:

	/s/ Sophie C. Ames	09/16/2026
	** 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)