** Shares of cinema operator IMAX IMAX.N gain 13.4% at $38.45 premarket
** The Wall Street Journal reported on Thursday that the firm, exploring a sale, has approached entertainment companies as potential buyers
** The process is at an early stage and may not lead to a deal - WSJ
** IMAX declined to respond to a Reuters request for comment
** IMAX is an "incredibly valuable player, either as a wholly differentiated, publicly traded company or as part of a larger company," CEO Rich Gelfond had said during December investor day
** As of last close, IMAX stock down 8.3% YTD
(Reporting by Tharuniyaa Lakshmi in Bengaluru)
((tharuniyaa@thomsonreuters.com))