Based in Williamsville, N.Y., Lincoln National Corporation provides financial advisory and insurance services. The firm offers a range of products and services focused on retirement, group life, group disability and dental insurance, as well as growing defined contribution and group protection businesses. It also offers other services, such as annuities, savings plans, comprehensive financial planning and advisory services, to name a few. Lincoln National Corporation services 91,000 retirement plans and group insurance contracts with approximately 8.7 million plan participants.