** Shares of Atrium Therapeutics RNA.O rise 5.78% to $14.45
** Co earns $15 million development milestone payment from Bristol Myers Squibb BMY.N under global cardiovascular collaboration
** Says RNA eligible for up to about $1.35 billion in research and development milestone payments, up to about $825 million in commercial milestone payments and tiered royalties up to low double-digits on net sales
** Adds Bristol Myers Squibb to fund all future clinical development, regulatory and commercialization activities resulting from collaboration
(Reporting by Megha Anilkumar Nair)
((MeghaAnilkumar.Nair@thomsonreuters.com;))