** Life Time Group's LTH.N shares fall 5% to $28.38 premarket after fitness chain operator announces commencement of secondary offering
** Buyout firms Leonard Green & Partners and TPG TPG.O are offering 20 million shares in the stock offering
** TPG has a 13.6% stake in LTH while Leonard Green owns 18.9% of the firm, according to SEC filing
** J.P. Morgan and BofA Securities are the underwriters for the proposed offering
** LTH has ~217.9 million outstanding shares for $6.5 billion market cap
** 10 of 13 brokerages rate the stock "buy" or higher and 3 "hold"; median PT $38 - data compiled by LSEG
** As of last close, LTH stock up 35% YTD
(Reporting by Arasu Kannagi Basil in Bengaluru)
((ArasuKannagi.Basil@thomsonreuters.com;))