** Shares of Apiam Animal Health AHX.AX rise 44.9% to A$0.775, their highest since September 27, 2022
** The veterinary service provider receives proposal from private firm Adamantem Capital Management to buy all of its shares at A$0.88 apiece
** Offer price represents a premium of 64.5% to stock's last close
** Stock on track to log a record gain, if trends hold
** Shares see busiest session since September 2024 as 1.2 mln shares change hands, 18x the 30-day average of 65,192
** Stock up 90.1% YTD, including moves in current session
(Reporting by Jasmeen Ara Shaikh in Bengaluru)
((JasmeenAraIslam.Shaikh@thomsonreuters.com;))