In February 2010, the two companies formed a sales alliance after which IM Global began distributing Reliance's Hindi film output internationally.
The successful sales alliance has now progressed to Reliance acquiring a majority stake in the company, a press release said.
"After a phenomenal first three years, the company is ready to move onto the next stage of its strategic growth. I simply could not wish for a more dynamic partner to help nurture that progression, " said Ford, the chief executive officer of IM Global.
"We're also looking forward to support Reliance extend its presence in Hollywood and the worldwide film community, " he added.
This extended relationship between the two companies will ensure an increased capability for independent film financing by IM Global, an expansion into sales and financing for top tier non-English language cinema as well as selective rights acquisitions for India and other Asian markets.
However, Ford's holding company Ancramdale will retain a significant equity position in the business, and 40-year-old Los Angeles-based Stuart Ford will continue to hold his position under a multi-year deal.