** Drugmaker Soleno Therapeutics' SLNO.O shares fall 6.2% to $83 premarket after unveiling proposed $200 million stock offering
** Goldman Sachs and Guggenheim Securities are the joint book-running managers
** Proceeds will be used to fund commercialization of rare disease drug Vykat XR and to fund regulatory and market development activities in the European Union, among other purposes
** The drug, which was approved by the U.S. Food and Drug Administration in March, treats hyperphagia in individuals with Prader-Willi syndrome
** Co expects net revenue from sales of Vykat XR to be between $31 million and $33 million for the three months ended June 30
** SLNO had 49.5 million outstanding shares as of March 31, according to prospectus
** As of last close, SLNO stock has nearly doubled YTD
(Reporting by Arasu Kannagi Basil in Bengaluru)
((ArasuKannagi.Basil@thomsonreuters.com))