** Shares of database software firm MongoDB MDB.O rise 4.8% to $377.67
** MDB names Chirantan Desai, Cloudflare's product and engineering head, as the new chief executive officer
** Desai will succeed Dev Ittycheria, who is stepping down after more than 11 years at the helm
** Co says it expects to exceed the high end of its Q3 FY26 outlook ranges
** As of last close, stock up ~55% this year
(Reporting by Jaspreet Singh in Bengaluru)
((Jaspreet.Singh@thomsonreuters.com ; https://twitter.com/i_jass))