** Shares of Resonance Health RHT.AX rise as much as 10.4% to A$0.053, their highest level since December 1, 2025
** Stock on track for its best session since April 8 if current gains hold
** MedTech co upgrades FY26 underlying EBITDA forecast to ~A$2.6 million ($1.86 million) from ~A$2 million previously expected
** Attributes upgrade to operational performance, improved cost efficiencies, and others
** About 3.2 million shares change hands, 9.3 times the 30-day avg
** Stock up 2% YTD, including the session's moves
($1 = 1.3976 Australian dollars)
(Reporting by Anjali Singh in Bengaluru)
((anjali.singh2@thomsonreuters.com;))