Leonard Stephen Riggio (February 28, 1941 – August 27, 2024) was an American businessman. He served as executive chairman of book store chain Barnes & Noble and was its largest shareholder from 1971[1] until the sale of the company to the hedge fund Elliott Investment Management in 2019.[2][3] Under his leadership the company expanded significantly from a single retail location on 105 Fifth Avenue in New York City to a nationwide chain with 600+ stores, which it did with acquisitions and mergers of competing chain stores including his takeover of B. Dalton in 1986, which was supported by a major investment from the Dutch retailer Vendex International and Drexel Burnham Lambert–issued junk bonds.[4]