![Exclusive-Sigma Lithium's former co-CEO fired for trading in blackout period](/i/c/575710bf-b09c-3473-46d1-001a7a8c528f.webp)
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](/i/c/4181823b-6523-c959-6558-99a841275ebc.webp)
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](/i/c/89a35e1a-bd12-74af-8a6a-936b310d361e.webp)
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'](/i/c/c690247e-88b1-09aa-f567-0795e5553061.webp)
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](/i/c/c836295c-7cdf-651c-2c36-4b06d06510b2.webp)
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](/i/c/ead3396f-2720-30db-612f-95359bd0b0f2.webp)
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](/i/c/7011aba1-d001-2f9f-7052-c6aeb191e4d5.webp)
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