** Shares of Rumble Resources rise as much as 18.4% to A$0.045, set for their best day since mid-April 2021 as of 0445 GMT if gains hold

** Stock hits its highest level since June 3

** Co announces it has entered into subscription agreement with India's Bain Resources Holdings $(BRH.UK)$; BRH will invest A$1 million ($0.7 mln) in co under deal

** Over 4.7 mln shares traded, 6.7x the 30-day average

** RTR down ~45% YTD including current session's moves

($1 = 1.4535 Australian dollars)

(Reporting by Kumar Tanishk in Bengaluru)

((Tanishk.Kumar@thomsonreuters.com;))