** Shares of 4DMedical 4DX.AX fall as much as 9.1% to A$3.900, hitting their lowest level since Dec. 31

** Stock logs its biggest intraday pct loss since Jan. 5

** Respiratory imaging tech firm completes A$150 million ($100.17 million) placement at issue price of A$3.80 apiece

** Co says issue price at 11.4% discount to stock's last close

** Stock has risen more than 5% so far this year after gaining over eight-fold in value in 2025

($1 = 1.4975 Australian dollars)

(Reporting by Rajasik Mukherjee in Bengaluru)

((Rajasik.Mukherjee@thomsonreuters.com))