** Engineering firm Legence's LGN.O shares slip 4% to $56.25 premarket
** Co says alternative asset manager Blackstone BX.N to sell 11 million LGN shares
** BX had previously offloaded 8.4 million LGN shares in an upsized secondary offering in December
** Blackstone-backed LGN went public in New York in September, raising $728 million through its IPO
** LGN has 108 million outstanding shares, according to offeringprospectus
** Goldman Sachs, Jefferies and BofA Securities acting as joint lead book-running managers for offering
** 15 of 16 brokerages rate the stock "buy" or higher and 1 "hold"; median PT is $62.50 - data compiled by LSEG
** As of last close, LGN stock up 36.3% YTD
(Reporting by Arasu Kannagi Basil in Bengaluru)
((ArasuKannagi.Basil@thomsonreuters.com))