** Shares of Gold Mountain GMN.AX fall as much as 15.4% to A$0.11, their lowest level since April 15
** Stock on track to log its steepest intraday pct fall since April 13
** The mineral explorer receives commitments to raise A$5.5 million ($3.94 million) through placement of 55 million new shares
** Issue price of A$0.10 per share represents a 23% discount to the stock's last close
** Stock up 74.6% YTD, including the session's moves
($1 = 1.3965 Australian dollars)
(Reporting by Anjali Singh in Bengaluru)
((anjali.singh2@thomsonreuters.com;))