** Medical supply giant Medline's MDLN.O shares fall 4.5% to $36 premarket

** MDLN unveils secondary offering of 60 million shares by stockholders including Blackstone BX.N, Hellman & Friedman (H&F) and Abu Dhabi Investment Authority (ADIA)

** BX and H&F each offloading 27 million shares each, while ADIA is parting ways with ~5.9 million shares, according to prospectus

** PE sponsors previously trimmed their stakes in a secondary offering in March

** Northfield, Illinois-based MDLN, which has 1.3 billion outstanding shares, went public in New York in December after IPO priced at $35 apiece

** Goldman Sachs, Morgan Stanley, BofA Securities and J.P. Morgan are global coordinators and joint bookrunning managers

** 23 of 29 brokerages rate the stock "buy" or higher and six "hold"; median PT $53 - data compiled by LSEG

** As of last close, MDLN stock down 10% YTD