CarGurus: Steinert proposes selling 772K founder shares

The 123,941 RSU shares in the notice vested between September 29, 2023, and October 1, 2025.

Available on EDGAR 11/04/2026 - 04:50 PM EST Accepted by SEC EDGAR 11/04/2026 - 04:49 PM EST Learn about SEC filing dates

Rhea-AI Filing Summary

CarGurus, Inc. (CARG) is the issuer named in a Rule 144 notice covering proposed sales for Langley Steinert’s account; the remarks say Hilary and Langley Steinert are acting jointly. Langley Steinert is identified as a director and 10% shareholder. The notice lists 123,941 Class A common shares from RSU vesting and 771,527 founder shares for sale, today or within three months of the November 4, 2026 notice.

Key Figures

Class A common shares from RSU vesting listed for sale: 123,941 shares Founder shares listed for sale: 771,527 shares Sale period: Three months

3 metrics

Class A common shares from RSU vesting listed for sale 123,941 shares Rule 144 notice

Founder shares listed for sale 771,527 shares Rule 144 notice

Sale period Three months Shares are being sold today or within three months of the November 4, 2026 notice

Key Terms

Rule 144, RSU Vesting, Founder Shares

3 terms

Rule 144 regulatory

"paragraph (a) of Rule 144"

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

RSU Vesting financial

"RSU Vesting"

RSU vesting is the process by which restricted stock units — a promise by a company to give shares to an employee — become actual, owned shares over time or when certain goals are met. Investors care because vested shares can dilute existing ownership when issued, and the timing of vesting affects when employees can sell shares, which can influence share supply, insider selling patterns, and company incentives.

Founder Shares financial

"Founder Shares"

Founder shares are the ownership stakes given to the people who start a company, often with extra voting power or protections compared with ordinary shares. For investors, they matter because founders’ control and incentives influence decisions about strategy, hiring, and whether the company sells or stays independent — like a family that keeps majority voting rights in a household decision. High founder ownership can mean stable leadership but also a risk that outside shareholders have less influence.

FAQ

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

How many CARG shares are listed for sale in Langley Steinert’s Rule 144 notice?

The notice lists 123,941 Class A common shares from RSU vesting and 771,527 founder shares. Its remarks say Hilary and Langley Steinert are acting jointly.

When did the RSU shares in the CARG notice vest?

The notice says the 123,941 RSU shares vested between September 29, 2023, and October 1, 2025.

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

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Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001719138
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	CarGurus, Inc
SEC File Number	001-38233
Address of Issuer	1001 Boylston Street, 16th Floor Boston MASSACHUSETTS 02115
Phone	617-354-0068
Name of Person for Whose Account the Securities are To Be Sold	Langley Steinert
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Director, 10% Shareholder

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Class A Common Stock	J.P. Morgan Securities LLC 270 Park Avenue, 10th Floor New York NY 10017	895468	30239954	75309864	11/04/2026	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Class A Common Stock	09/29/2023	RSU Vesting	Issuer			123941	10/01/2025	N/A
Class A Common Stock	01/01/2006	Founder Shares	Issuer			771527	01/01/2006	N/A

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Nothing to Report

144: Remarks and Signature

Remarks	The shares covered by this filing are being sold today or within three months from the date of this filing by Hilary and Langley Steinert, acting jointly. Of the shares filed, 123,941 shares were RSUs that vested between 09/29/23 and 10/01/25.
Date of Notice	11/04/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	05/29/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ J.P. Morgan Securities LLC as agent and attorney-in-fact for Langley Steinert
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)