** Shares of Bioxyne BXN.AX rise as much as 8.6% to A$0.076, their highest level since April 22
** The pharmaceutical firm executes an expanded supply agreement with Remidose LATAM to supply three Dr Watson cannabis flower stock keeping units to Costa Rica
** Says initial shipment to be made prior to June 30, with invoice value to exceed A$500,000 ($361,450)
** Up 71.4% YTD, including the session's moves
($1 = 1.3833 Australian dollars)
(Reporting by Anjali Singh in Bengaluru)
((anjali.singh2@thomsonreuters.com;))