** Mobile banking technology firm shares slump asmuch as 29 pct and hit their lowest in more than 6 yearson surprise CEO departure
** Co says CEO Elizabeth Buse had decided to leave due topersonal reasons, after just about fifteen months in thejob
** Co's stock is the second largest loser on London's FTSEAIM all-share index
** Monitise provides software for mobile devices that allowsclients of banks, including Royal Bank of Scotland andBanco Santander, to pay for goods and services
** Stock down about 85 pct YTD (RM: aastha.agnihotri.thomsonreuters.com@reuters.net)
