Exclusive-Sigma Lithium's former co-CEO fired for trading in blackout period
By Fabio Teixeira RIO DE JANEIRO The former co-CEO of Sigma Lithium, a leader in Brazil's budding lithium
2023-11-23 05:24
Sigma Lithium confirms resignation of COO, citing health reasons
By Fabio Teixeira RIO DE JANEIRO Sigma Lithium on Friday said its Chief Operating Officer Brian Talbot left
2023-10-07 02:50
Exclusive-Sigma Lithium COO steps down in latest leadership shakeup
By Fabio Teixeira RIO DE JANEIRO Sigma Lithium Chief Operating Officer Brian Talbot left the company at the
2023-10-05 20:20
Sigma Lithium questions reporting on Brazil mineral rights 'injunction'
By Fabio Teixeira RIO DE JANEIRO Sigma Lithium on Friday challenged a Reuters report that a Brazilian court
2023-09-30 03:17
Brazil mineral rights dispute casts shadow on Sigma Lithium expansion
By Fabio Teixeira RIO DE JANEIRO A Brazilian court injunction is halting the sale or mining of two
2023-09-29 04:16
Sigma Lithium to explore alternatives after proposals for miner, Brazil unit
Miner Sigma Lithium said on Wednesday it is evaluating strategic alternatives for the whole company, including its Brazilian
2023-09-13 19:25
Sigma Lithium, eyeing buyout, sues ex-CEO and daughter-in-law over trade secrets
By Jonathan Stempel NEW YORK Sigma Lithium, which produces metal used in electric vehicle batteries, has sued a
2023-08-23 00:57