The founders of Ebiquity have resigned from the board of the media and marketing analytics company and sold off a large portion of their stakes, the AIM-listed firm said on Friday.One day after announcing the retirement of Chief Operations Officer Paul Adams, Ebiquity said that non-executive directors Sarah and Steve Thomson have both stepped down with immediate effect.The couple founded the firm, formerly known as Thomson Intermedia, back in 1997 before listing it on the stock market in 2000. "On behalf of my colleagues I would like to thank Sarah and Steve for their significant contribution to the business from inception and to wish them continued success for their ever increasing portfolio of entrepreneurial businesses," said Chairman Michael Higgins in a statement."From launch the company has grown to become one of the leading media analytics companies worldwide, which now employs more than 800 people and serves over 1,100 clients," he said.Ebiquity also revealed that Sarah Thomson had sold over 7.6m of her shares in the firm at a price of 120p a share, raising £9.12m. Steve Thomson, meanwhile, sold 1,000 at 120p each.Both directors also exercised options over 145,921 shares, with both retaining stakes of 145,921 shares each.BC