CarGurus CTO Matthew Todd Quinn sells 3,824 shares

The reported activity spans two dates and separates a planned sale from tax withholding upon restricted stock unit vesting.

Rhea-AI Filing Summary

CarGurus, Inc. Chief Technology Officer Matthew Todd Quinn sold 3,824 shares of Class A Common Stock on October 2, 2026, at $29.62 per share under a Rule 10b5-1 trading plan adopted by him. On October 1, 2026, 9,129 shares were withheld for tax liability upon vesting of restricted stock units, at $29.73 per share.

Insider Trade Summary 10b5-1

Net Seller: 3,824 shares

Net Sell 2 txns

Insider Quinn Matthew Todd

Role Chief Technology Officer

Sold 3,824 shs ($113K)

Type	Security	Shares	Price	Value
Sale	Class A Common Stock F2	3,824	$29.62	$113K
Tax Withholding	Class A Common Stock F1	9,129	$29.73	$271K

Holdings After Transaction: Class A Common Stock — 220,193 shares (Direct)

Footnotes (2)

1. F1. Shares withheld for payment of tax liability upon vesting of restricted stock units.
2. F2. This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person.

Key Figures

Shares sold: 3,824 shares Sale price: $29.62 per share Shares withheld for tax liability: 9,129 shares +1 more

4 metrics

Shares sold 3,824 shares Class A Common Stock sale on October 2, 2026

Sale price $29.62 per share Class A Common Stock sale on October 2, 2026

Shares withheld for tax liability 9,129 shares Upon restricted stock unit vesting on October 1, 2026

Tax-withholding per-share price $29.73 per share Shares withheld on October 1, 2026

Key Terms

Rule 10b5-1 trading plan, restricted stock units, vesting

3 terms

Rule 10b5-1 trading plan regulatory

"pursuant to a Rule 10b5-1 trading plan"

A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.

restricted stock units financial

"vesting of restricted stock units"

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.

vesting financial

"upon vesting of restricted stock units"

Vesting is the process by which you earn full ownership of something, like company stock or a retirement benefit, over time. It’s like earning the right to keep a gift piece by piece the longer you stay with a company, making sure employees stay committed before they receive all the benefits.

FAQ

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

How many CARG shares did CTO Matthew Todd Quinn sell?

Matthew Todd Quinn sold 3,824 shares of Class A Common Stock on October 2, 2026, at $29.62 per share. The sale was effected under a Rule 10b5-1 trading plan adopted by him.

Why were 9,129 CARG shares withheld for Matthew Todd Quinn?

The 9,129 shares were withheld for tax liability upon vesting of restricted stock units on October 1, 2026.

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

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Available on EDGAR 10/05/2026 - 05:54 PM Accepted by SEC EDGAR 10/05/2026 - 05:54 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).

X

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^*

Quinn Matthew Todd

(Last) (First) (Middle)

1001 BOYLSTON STREET

16TH FLOOR

(Street)

BOSTON MASSACHUSETTS 02115

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
CarGurus, Inc. [ CARG ]

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

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Technology Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
10/01/2026

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
Class A Common Stock	10/01/2026		F(1)		9,129	D	$29.73	224,017	D
Class A Common Stock	10/02/2026		S(2)		3,824	D	$29.62	220,193	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. Shares withheld for payment of tax liability upon vesting of restricted stock units.

2. This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person.

	/s/ Suzanne Murray, as attorney-in-fact	10/05/2026
	** 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)