Martha Helen Stewart (née Kostyra; born August 3, 1941) is an American businesswoman, writer, and television personality. As founder of Martha Stewart Living Omnimedia, she has gained success through a variety of business ventures, encompassing publishing, broadcasting, merchandising, and electronic commerce. She has written numerous bestselling books, is the publisher of the Martha Stewart Living magazine, and hosted two long-running syndicated television shows, Martha, which ran from 2005 to 2012, and Martha Stewart Living, which ran from 1993 to 2005. In 2004, Stewart was convicted of charges related to the ImClone insider trading affair and sentenced to prison. There was speculation that the incident would effectively end her media empire, although Stewart began a comeback campaign in 2005 and her company returned to profitability in 2006. Stewart rejoined the board of directors of Martha Stewart Living Omnimedia in 2011 and became chairman of her namesake company again in 2012.