** U.S.-listed shares of Israel-based biotech firm CHEK.O
fall ~4.7% at $0.36 in afternoon trade
** Co's net loss in Q4 widens to $5.5 mln vs $3.9 mln a year
earlier, weighed down by higher expenses
** CHEK says bigger loss primarily due to a jump in its
employee headcount adding to salary and compensation costs
** Research and development expenses in Q4 were $4.1 mln vs
$2.8 mln last year
** Including session's loss, shares down ~45.9% YTD
(Reporting by Manya Saini in Bengaluru)
((Manya.Saini@thomsonreuters.com;))