NEW YORK, Sept. 19, 2020 /PRNewswire/ -- Rosen Law Firm, a global investor rights law firm, reminds purchasers of the securities of Braskem S.A. between May 6, 2016 and July 8, 2020, inclusive (the "Class Period"), of the important October 26, 2020 lead plaintiff deadline in securities class action. The lawsuit seeks to recover damages for Braskem investors under the federal securities laws.