Guernsey manages four distinct businesses, which operate under the Sonic, Zaxby's, and Take-5-Oil Change brands.

Guernsey Sonic

Year of Inception: 2021
Type: Equity
Status: Active
Brand: Sonic
Number of Locations: 122
Markets: Louisiana, Texas, Illinois, Arkansas, Idaho, Washington, Tennessee, Kentucky & Oregon
Headquartered: Las Vegas, NV
Brand President: Jacques Grondin
Website: GuernseySonic.com

Guernsey Zaxby's

Year of Inception: 2024
Type: Equity
Status: Active
Brand: Zaxby's
Number of Locations: 20
Markets: South Carolina
Headquartered: Florence, South Carolina
Website: zaxbys.com

Mac Foods Group

Year of Inception: 2018
Type: Equity
Status: Exited
Brand: Little Caesars
Number of Locations: 38
Markets: Michigan
Headquartered: Davison, Michigan

High Road Auto Group

Year of Inception: 2022
Type: Equity
Status: Active
Brand: Take-5-Oil Change
Number of Locations: 3
Markets: New Jersey
Headquartered: Lawnside, NJ