** Lingbao Gold Group 3330.HK falls 4% to HK$26.3, lowest since March 31
** Stock on track for fourth straight session of declines; set for biggest one-day pct drop since April 9
** China-based gold mining, processing, smelting group plans sale of 29.82 mln new shares to key shareholder, raising HK$780 mln ($99.6 mln) to fund asset acquisitions
** Shares will be sold at HK$26.16, representing 4.53% discount to Monday's close
** Key shareholder will buy new shares following sale of same amount of existing shares at same price to third party investors
** YTD, stock up 49.1%
($1 = 7.8333 Hong Kong dollars)
(Reporting by Donny Kwok)
((donny.kwok@thomsonreuters.com))