** Shares of Namoi Cotton NAM.AX rise as much as 5.5% to
A$0.77, their highest level since late 1999
** NAM marks its third straight session of gains
** Olam Agri IPO-OLAA.SI sweetens its takeover offer to
A$0.70 per share, valuing NAM at A$144.9 mln ($95.29 mln)
** Olam Agri's latest offer is above rival suitor Louis
Dreyfus' A$0.67 per share bid - valuing NAM at A$138.6 mln
** Louis Dreyfus already controls around 17% stake in NAM,
and is vying for the full control
** NAM up 52.1% this year as of last close
($1 = 1.5207 Australian dollars)
(Reporting by Sameer Manekar in Bengaluru)
((Sameer.Manekar@thomsonreuters.com; Twitter: https://twitter.com/sameer_manekar))