** Orica ORI.AX tumbles as much as 7.7% to A$21.78, marking its steepest intraday drop since early August 2022

** Stock set for its fourth consecutive session of loss

** Explosives maker trades ex-dividend

** Co declared a final dividend of 32 Australian cents per share

** Stock sheds 3.1% this week, on track for its sharpest weekly decline since early September

(Reporting by Kumar Tanishk in Bengaluru)

((Tanishk.Kumar@thomsonreuters.com; X: @thatstanishk http://www.x.com/thatstanishk;))