NEW YORK CITY, NY / ACCESS Newswire / May 29, 2026 / Bronstein, Gewirtz & Grossman, LLC is investigating potential claims on behalf of purchasers of Sigma Lithium Corporation ("Sigma" or "the Company") (NASDAQ:SGML). Investors who purchased Sigma securities are encouraged to obtain additional information and assist the investigation by visiting the firm's site: bgandg.com/SGML.

Sigma Investigation Details

On January 8, 2026, Bank of America ("BofA") downgraded Sigma Lithium to Underperform from Neutral, citing unresolved operational and liquidity issues. BofA asserted that management has not yet provided clarity on the resumption of mining or receipt of cash from prepayments, both of which are crucial to alleviating balance sheet concerns. Following the downgrade, Sigma Lithium's stock price fell $2.36 per share, or 15.07%, to close at $13.30 per share on January 8, 2026. Then, on May 18, 2026, Bloomberg reported that a Brazilian judge ordered the Company's Sigma Mineração subsidiary to deposit 50 million reais with a court in the next 10 days to ensure it covers alleged damages linked to its Grota do Cirilo lithium operation. The judge ruled that accounts of dust, tremors, cracks in homes, and constant noise in connection with the operation showed "a situation of massive violation of human dignity" in the nearby communities. On this news, Sigma Lithium's stock price fell $2.06 per share, or 12.25%, to close at $14.76 per share on May 18, 2026.

What's Next for Sigma Investors?

If you are aware of any facts relating to this investigation or purchased Sigma securities, you can assist this investigation by visiting the firm's site: bgandg.com/SGML. You can also contact Peretz Bronstein or his client relations manager, Nathan Miller, of Bronstein, Gewirtz & Grossman, LLC: 917-590-0911

No Cost to Sigma Investors

We, Bronstein, Gewirtz & Grossman, LLC, represent investors in class actions on a contingency fee basis. That means we will ask the court to reimburse us for out-of-pocket expenses and attorneys' fees, usually a percentage of the total recovery, only if we are successful.

Why Bronstein, Gewirtz & Grossman, LLC for Sigma Securities Investigation?

Bronstein, Gewirtz & Grossman, LLC is a nationally recognized firm that represents investors in securities fraud class actions and shareholder derivative suits. Our firm has recovered hundreds of millions of dollars for investors nationwide.

"Our practice centers on restoring investor capital and ensuring corporate accountability, which serves to uphold the essential integrity of the marketplace," said Peretz Bronstein, Founding Partner of Bronstein, Gewirtz & Grossman, LLC.

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Contact Info

Peretz Bronstein, Esq. or Nathan Miller
Bronstein, Gewirtz & Grossman, LLC
917-590-0911 | info@bgandg.com

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Prior results do not guarantee similar outcomes.

SOURCE: Bronstein, Gewirtz & Grossman, LLC



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