** Shares in Lanxess LXSG.DE fall 5.1% in early Frankfurt trade after Advnet HoldCo will not take over the German speciality chemicals maker's shares in Envalior in 2026, the company said on Thursday
** As a result, the additional tender and purchase periods for Lanxess shares in the joint venture now apply in the years of 2027 and 2028, according to a statement
** "Lanxess balance sheet concerns will continue as transaction may be completely off the table," a local trader says, adding analysts saw an equity value of 750 million euros ($870.53 million) in the 41% stake
** The stock, which has fallen 7.1% YTD, is seen at the bottom of Germany's mid-cap index .MDAXI
($1 = 0.8615 euros)
(Reporting by Ozan Ergenay)
((ozan.ergenay@thomsonreuters.com))