** Shares of Cogstate CGS.AX fall as much as 30.3% to A$1.75 in early trade, their largest intraday pct fall since late February 2019

** Stock hits lowest level since September 11

** Neuroscience tech firm forecasts 1H26 total revenue growth of 5%-9% to $25 million-$26 million vs earlier forecast of 18%-19% growth

** Attributes lower earnings to decreased contribution of upfront licence fees to total revenue, timing delays in recognising late contracts during the period

** More than 753,000 shares change hands, 2 times the 30-day average

** Stock up 86.1% YTD, including the day's moves

(Reporting by Nikita Maria Jino in Bengaluru)

((Nikita.Jino@thomsonreuters.com))