** Shares of Crimson Tide Plc TRST.L slump ~35% to 175p
** TRST says regulatory and compliance software co Ideagen
has dropped out of its pursuit for London-listed firm
** Last month, Crimson Tide said it was considering a 20.5
mln pound ($26.5 mln) conditional takeover proposal from Ideagen
after it had rejected a revised offer from rival Checkit CKT.L
** Including session's loss, stock up ~23% YTD
($1 = 0.7736 pounds)
(Reporting by Aby Jose Koilparambil in Bengaluru)
((abyjose.koilparambil@thomsonreuters.com))