X0508 4 2023-08-18 0001031203 GROUP 1 AUTOMOTIVE INC GPI 0001528681 Kenningham Daryl 800 GESSNER SUITE 500 HOUSTON TX 77024 1 1 President & CEO 0 Common Stock 2023-08-18 4 S 0 8080 262.23 D 25968.3201 D Common Stock 2023-08-18 4 S 0 1420 263.46 D 24548.3201 D Common Stock 11956.56 I Kenningham Management Trust The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $262.00 to $262.89, inclusive. The reporting person undertakes to provide to Group 1 Automotive, Inc., any security holder of Group 1 Automotive, Inc., 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 ranges set forth in footnote 1 to this Form 4. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $263.06 to $263.65, inclusive. The reporting person undertakes to provide to Group 1 Automotive, Inc., any security holder of Group 1 Automotive, Inc., 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 ranges set forth in footnote 2 to this Form 4. Includes shares purchased in the Group 1 Automotive, Inc. Employee Stock Purchase Plan. The plan provides for a stock purchase discount of 15%, and is calculated using the stock closing price of the first or last day of the quarter, whichever is lower. /s/ Gillian A. Hobson, attorney-in-fact for Daryl Kenningham 2023-08-21