Seminole Gas Company, LLC (“SGC”) – Tulsa, OK 
Operating Area - OK & TX

Seminole Energy Services, LLC (“SES”) – Tulsa, OK

Seminole Retail Energy Services, LLC (“SRES”) – Tulsa, OK

Mid-Atlantic Division – Lexington, KY
Operating Area - AL, KY, TN, VA & WV

Mid-Continent Division – Tulsa, OK
Operating Area - AR, KS, LA, MO, MS, OK & TX

High Plains Division – Denver, CO 
Operating Area - CO, IA, NE, NM & WY

Texas Division – Austin, TX
Operating Area - TX

Unimark, LLC – Edmond, OK
Operating Area - OK & TX

Lakeshore Energy Services, LLC – Detroit, MI
Operating Area - MI & OH

Vanguard Energy Services, LLC – Chicago, IL
Operating Area - IL