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GROUP 1 AUTOMOTIVE INC

For the period ended Jun 30, 2026. Filed Jul 30, 2026.

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A company's report for each of its first three quarters. The financial statements are not audited. It shows how the business has moved since the last annual report, and what management says changed.

Jun 30, 2026 · Filed Jul 30, 2026

GPI$261.35-1.9%Stored close · as of Nov 6, 2026
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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

☑QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended June 30, 2026

or

☐TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from to

Commission File Number:1-13461

Group 1 Automotive, Inc.

(Exact name of registrant as specified in its charter)

Delaware76-0506313
(State or other jurisdiction of incorporation or organization)(I.R.S. Employer Identification No.)
730 Town and Country Blvd.,Suite 50077024
Houston,TX(Zip code)
(Address of principal executive offices)

(713)647-5700

(Registrant’s telephone number, including area code)

Not Applicable

(Former name, former address and former fiscal year, if changed since last report)

Securities registered pursuant to Section 12(b) of the Act:
Title of each classTicker symbol(s)Name of exchange on which registered
Common stock, par value $0.01 per shareGPINew York Stock Exchange

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports) and (2) has been subject to such filing requirements for the past 90 days. Yes þ No¨

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this Chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). Yes þ No¨

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, smaller reporting company or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act. (Check one):

Large accelerated filerþ¨Accelerated filer
Non-accelerated filer¨☐Smaller reporting company
☐Emerging growth company

If an emerging growth company, indicate by check mark if that registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.¨

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes☐ Noþ

As of July 24, 2026, the registrant had 11,922,225 shares of common stock outstanding.

TABLE OF CONTENTS

GLOSSARY OF DEFINITIONS1
FORWARD-LOOKING STATEMENTS2
PART I. FINANCIAL INFORMATION3
Item 1.Financial Statements3
Item 2.Management’s Discussion and Analysis of Financial Condition and Results of Operations22
Item 3.Quantitative and Qualitative Disclosures about Market Risk47
Item 4.Controls and Procedures47
PART II. OTHER INFORMATION48
Item 1.Legal Proceedings48
Item 1A.Risk Factors48
Item 2.Unregistered Sales of Equity Securities and Use of Proceeds48
Item 5.Other Information48
Item 6.Exhibits49
SIGNATURE50

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The text of this filing, as the company filed it with the SEC, without its images or exhibits. This is not investment advice.