** Agricultural biotechnology co Cibus CBUS.O slides 17.2% to $4.19 premarket
** Says it intends to offer Class A shares
** Adds CEO Rory Riggs and other investors showed interest in buying the offered shares, without disclosing the size of the proposed public offering
** Proceeds will be used to improve existing seed traits and develop new ones - CBUS
** Co has 26.2 mln outstanding shares, giving it ~132.6 mln market cap - LSEG
** As of last close, stock down ~74% YTD
(Reporting by Arasu Kannagi Basil in Bengaluru)