** U.S.-listed shares SGML.O of miner Sigma Lithium up
16.7% at $37.50 premarket
** Company says it is evaluating strategic alternatives for
the whole company, including its Brazilian unit
** Says it has received multiple proposals for its Grota do
Cirilo project in Brazil, Sigma Brazil and parent company Sigma
Lithium
** The proposals were from "global industry leaders in the
energy, auto, batteries and lithium refining industries",
according to Sigma Lithium
** Company says it plans to conclude the evaluation this
year
** As of last close, shares up 13.9% YTD
(Reporting by Tanay Dhumal in Bengaluru)
((Tanay.Dhumal@thomsonreuters.com; Twitter: https://twitter.com/TanayDhumal))