NEW YORK, NY / ACCESSWIRE / August 26, 2021 / The Klein Law Firm announces that class action complaints have been filed on behalf of shareholders of the following companies. There is no cost to participate in the suit. If you suffered a loss, you have until the lead plaintiff deadline to request that the court appoint you as lead plaintiff.

Zymergen Inc. (NASDAQ:ZY)
This lawsuit is on behalf of investors who purchased ZY common stock pursuant and/or traceable to the documents issued in connection with the Company's April 2021 initial public offering.
Lead Plaintiff Deadline: October 4, 2021

During the class period, Zymergen Inc. allegedly made materially false and/or misleading statements and/or failed to disclose that: (1) during the qualification process for the Company's optical film product, Hyaline, key customers had encountered technical issues, including product shrinkage and incompatibility with customers' processes; (2) though the qualification process was critical to achieving market acceptance for Hyaline and generating revenue, Zymergen lacked visibility into the qualification process; (3) as a result, the Company overestimated demand for its products; (4) as a result of the foregoing, the Company's product delivery timeline was reasonably likely to be delayed, which in turn would delay revenue generation; and (5) as a result of the foregoing, Defendants' positive statements about the Company's business, operations, and prospects, were materially misleading and/or lacked a reasonable basis.

Learn about your recoverable losses in ZY: https://www.kleinstocklaw.com/pslra-1/zymergen-inc-loss-submission-form?id=18974&from=1

Yalla Group Limited (NYSE:YALA)
Class Period: September 30, 2020 - August 9, 2021
Lead Plaintiff Deadline: October 12, 2021

The complaint alleges that during the class period Yalla Group Limited made materially false and/or misleading statements and/or failed to disclose that: the Company overstated its user metrics and revenue and, as a result, the Company's public statements were materially false and misleading at all relevant times.

Learn about your recoverable losses in YALA: https://www.kleinstocklaw.com/pslra-1/yalla-group-limited-loss-submission-form?id=18974&from=1

Sesen Bio, Inc. (NASDAQ:SESN)
Class Period: December 21, 2020 - August 17, 2021
Lead Plaintiff Deadline: October 18, 2021

The SESN lawsuit alleges Sesen Bio, Inc. made materially false and/or misleading statements and/or failed to disclose during the class period that: (1) Sesen Bio's clinical trial for its cancer treatment product, Vicineum, had more than 2,000 violations of trial protocol, including 215 classified as "major"; (2) three of Sesen Bio's clinical investigators were found guilty of "serious noncompliance," including "back-dating data"; (3) Sesen Bio had submitted the tainted data in connection with the Biologics License Application ("BLA") for Vicineum; (4) Sesen Bio's clinical trials showed that Vicineum leaked out into the body, leading to side effects including liver failure and liver toxicity, and increasing the risks for fatal, drug-induced liver injury; (5) as a result of the foregoing, the Company's BLA for Vicineum was not likely to be approved; (6) as a result of the foregoing, there was a reasonable likelihood that Sesen Bio would be required to conduct additional trials to support the efficacy and safety of Vicineum; and (7) as a result of the foregoing, Defendants' positive statements about the Company's business, operations, and prospects were materially misleading and/or lacked a reasonable basis.

Learn about your recoverable losses in SESN: https://www.kleinstocklaw.com/pslra-1/sesen-bio-inc-loss-submission-form?id=18974&from=1

Your ability to share in any recovery doesn't require that you serve as a lead plaintiff. If you suffered a loss during the class period and wish to obtain additional information, please contact J. Klein, Esq. by telephone at 212-616-4899 or visit the webpages provided.

J. Klein, Esq. represents investors and participates in securities litigations involving financial fraud throughout the nation. Attorney advertising. Prior results do not guarantee similar outcomes.

CONTACT:
J. Klein, Esq.
Empire State Building
350 Fifth Avenue
59th Floor
New York, NY 10118
jk@kleinstocklaw.com
Telephone: (212) 616-4899
Fax: (347) 558-9665
www.kleinstocklaw.com

SOURCE: The Klein Law Firm