** Life360's Australia-listed shares fall as much as 8.5% to A$20.82, heading for their worst session since early September - if current losses hold
** Stock third-biggest loser on the benchmark ASX 200 index
** Technology platform provider says CEO Chris Hulls has sold part of his stake in co
** Sale amounted to 1.2% of total outstanding shares in co
** Hulls has about a 3.8% stake in Life360 after the sale
** Stock hits lowest level since Oct. 14
** Stock up about 181% YTD, including current session's moves, lagging behind an 8.8% gain on the ASX 200 index
(Reporting by Nikita Maria Jino in Bengaluru)
((Nikita.Jino@thomsonreuters.com;))