 In January 2010 , David Sullivan and David Gold acquired a 50 % share in West Ham given them overall operational and commercial control . At the end of May 2010 , David Gold and David Sullivan purchased a further 10 % stake in the club at a cost of £ 8 million . Taking their controlling stake to 60 % , they announced that they could open up shares for fans to purchase . On 9 August 2010 , Gold and Sullivan increased their shares up to 30 @.@ 6 % each with " minority investors , " ( which included former owner Terry Brown , purchasing a further 3 @.@ 8 % of the club at a cost of around £ 3 – 4 million ) leaving Icelandic Straumur Investment Bank owning 35 % of the club . 
