(Reuters) – Software maker Nuance Communications Inc has held talks with potential buyers for its sale, the Wall Street Journal reported, citing people familiar with the matter. The company, whose software powers the Siri feature on Apple Inc’s iPhones, recently spoke to Samsung Electronics Co and some private equity firms for a possible deal, the Journal said. Carl Icahn reported a 15.9 percent increase in his stake in the company to 60.8 million shares for the quarter ended Dec. 31. The activist investor, Nuance’s largest shareholder, held about 19.08 percent stake in the company as of March 31, 2014.