** Shares of telecommunication services provider ST1.AX
jump as much as 7% to A$0.305, their highest since June 16
** Co sees FY22 underlying EBITDA between A$19.4 mln and
A$20.2 mln, revenue of A$150 mln to A$155 mln
** Posts FY21 underlying EBITDA of A$11.5 mln ($8.44 mln),
up 208% from A$3.7 mln in FY20 urn:newsml:reuters.com:*:nASX3mWy06
** Says FY21 revenue and other income rose 200% to A$104.5
mln
** Stock posts its biggest intraday pct. gain since July 5
** ST1 stock down 28.8% this year, as of last close
($1 = 1.3618 Australian dollars)
(Reporting by Harish Sridharan in Bengaluru)
((harish.sridharan@thomsonreuters.com))