The Transamerica Corporation is an American holding company for various life insurance companies and investment firms operating primarily in the United States, offering life and supplemental health insurance, investments, and retirement services. The company has major offices located in Baltimore, Maryland; Cedar Rapids, Iowa; Denver, Colorado; Norwood, Massachusetts; Exton, Pennsylvania; Harrison, New York; Johns Creek, Georgia; Plano, Texas; and St. Petersburg, Florida. Additional affiliated offices are located throughout the United States. In 1999, it became an independent subsidiary of multinational company Aegon.