** Sacyr SCYR.MC shares fall about 5% after Nerifan offloads its entire 5.12% stake in the Spanish engineering company
** The transaction, managed by Citigroup through an accelerated bookbuilding process, raises 150.8 million euros ($175.65 million) at 3.70 euros per share, which represents a 6.5% discount to the previous day's close
** Nerifan, controlled by Manuel Lao Hernandez via Nortia Capital Investment Holding, no longer holds any shares in Sacyr following the sale of 40.8 million ordinary shares
** Capital Markets analysts label the sale as "negative news for the stock"
** Shares are on track for their worst day since April 4 if losses hold
($1 = 0.8585 euros)
(Reporting by Mireia Merino)
((mireia.merino@thomsonreuters.com))