Keith A. McMahan

Tri Gas & Oil Co., Inc. provides propane gas, heating oils, alternative fuels, diesel fuel, gasoline and high-quality appliances. The company was founded in 1963 and is headquartered in Federalsburg, MD.

PSB Holding Corp. (Maryland) engages in offering a full line of business-related loan, deposit, and cash management products. It also focuses on deposit services and loans to individuals, small businesses, associations, and government entities. The company was founded on July 12, 1996 and is headquartered in Preston, MD.

Provident State Bank, Inc. engages in commercial banking services. The bank specializes in personal and businesses banking solutions. It offers accounts, savings, loans, mortgages, and other related products. The company was founded on March 26, 1904 and is headquartered in Preston, MD.

University of Maryland Medical System Corp. provides health care system. Its services include University of Maryland health advantage plan, University of Maryland quality care network, University of Maryland cancer network and diabetes network. The firm offers referral center for trauma, cancer care, neurocare, cardiac care, women's and children's health and physical rehabilitation. The company was founded in 1984 and is headquartered in Baltimore, MD.