** Shares of Johns Lyng Group JLG.AX rise as much as 18.5% to A$3.015, their highest levels since February 25
** Stock on track for a record strongest trading session, if gains hold
** The property business firm receives a buyout offer from fund manager Pacific Equity Partners (PEP), with transaction details unknown
** Says PEP made offer after market close on May 16 and has also been granted a period of exclusive due diligence
** Co has market capitalisation of A$718.67 million ($468.86 million)
** Stock down 32.1% YTD, as of last close
($1 = 1.5328 Australian dollars)
(Reporting by Nikita Maria Jino in Bengaluru)
((Nikita.Jino@thomsonreuters.com;))