Company profiles 19 — 25 for Oklahoma Inc.

Phone: (918) 573-2000

Website: www.williams.com

Ticker: WMB

Exchange: NYSE

At the top: Alan S. Armstrong

Employees: 5,022

Industry: Natural Gas Distribution

Summary: Williams is primarily engaged in gas marketing and the gathering, storing and processing of natural gas and natural gas liquids (NGLs).

Address: 302 N Independence St. Suite 1500, Enid, OK 73701

Phone: (580) 233-8955

Website: www.cpmtres.com

Ticker: CLR

Exchange: NYSE

At the top: Harold Hamm

Employees: 408

Industry: Oil and Gas Extraction

Summary: Continental Resources Inc. engages in the exploration, exploitation and production of oil and natural gas properties primarily in the U.S.

Address: Bank of Oklahoma Tower, Tulsa, OK 74192

Phone: (918) 588-6000

Website: www.bokf.com

Ticker: BOKF

Exchange: NAS

At the top: Stanley A. Lybarger

Employees: 4,355

Industry: Commercial Banking

Summary: BOK offers a range of financial services to consumers and regional businesses.

Address: 5400 N Grand Blvd. Grand Centre Suite 3, Oklahoma City, OK 73112

Phone: (405) 948-1560

Website: www.panhandleoilandgas.com

At the top: Michael C. Coffman

Employees: 18

Industry: Crude petroleum and natural gas extraction

Summary: Panhandle Oil and Gas Inc. is involved in the acquisition, management and development of oil and natural gas properties.

Address: Two Warren Place 6120 S Yale Ave., Tulsa, OK 74136

Phone: (918) 524-8100

Website: www.semgroupcorp.com

Ticker: SEMG

Exchange: NYSE

At the top: Norm J. Szydlowski

Employees: 1,622

Industry: Natural Gas Distribution

Summary: SemGroup moves oil and gas from the well head to the marketplace. Its SemStream unit delivers natural gas liquids (NGLs), propane and feedstock supplies to customers in more than 40 U.S. states.

Address: 300 Johnny Bench Drive, Oklahoma City, OK 73104

Phone: 225-5000

Website: www.sonicdrivein.com

Ticker: SONC

Exchange: NAS

At the top: J. Clifford Hudson

Employees: 350

Industry: Restaurants

Summary: Sonic Corp. operates and franchises a chain of quick-service drive-in restaurants in the United States.