GlobeNewswire Inc | Jan 21, 2021 11:00AM EST

January 21, 2021

NEW YORK, Jan. 21, 2021 (GLOBE NEWSWIRE) -- Attorney Advertising --Bronstein, Gewirtz & Grossman, LLC reminds investors that a class action lawsuit has been filed against the following publicly-traded companies. You can review a copy of the Complaints by visiting the links belowor you may contact Peretz Bronstein, Esq. or his Investor Relations Analyst, Yael Hurwitz of Bronstein, Gewirtz & Grossman, LLC at212-697-6484. If you suffered a loss, you can request that the Court appoint you as lead plaintiff. Your ability to share in any recovery doesn't require that you serve as a lead plaintiff. A lead plaintiff acts on behalf of all other class members in directing the litigation. The lead plaintiff can select a law firm of its choice. An investor's ability to share in any potential future recovery is not dependent upon serving as lead plaintiff.

Sona Nanotech Inc.(OTC: SNANF)Class Period: July 2, 2020-November 25, 2020Deadline: February 16, 2021For more info:www.bgandg.com/snanfThe Complaint alleges that throughout the Class Period, Defendants made false and/or misleading statements and/or failed to disclose that: (1) it was unreasonable for Sona to represent that it could receive results from field studies of its COVID-19 antigen test within a month; (2) Sona's positive statements about its COVID-19 antigen test were unfounded as the U.S. Food and Drug Administration ("FDA") would deprioritize emergency use authorization approval of Sona's antigen test finding it did not meet "the public health need" criterion; (3) it was unreasonable for Sona to believe that data gathered over such a short period of time would be sufficient for approval of its antigen test by either the FDA or Health Canada; (4) Sona would have to withdraw its submission for Interim Order authorization from Health Canada for the marketing of its COVID-19 antigen test as it lacked sufficient clinical data to support approval; and (5) as a result, defendants' statements about its business, operations, and prospects, were materially false and misleading and/or lacked a reasonable basis at all relevant times.

ACM Research, Inc.(NASDAQ: ACMR)Class Period: March 6, 2019 - October 7, 2020Deadline: February 19, 2021For more info:www.bgandg.com/acmrOn October 8, 2020, analyst J Capital Research ("J Capital") published a report concerning ACM, in which J Capital concluded that ACM "is a fraud, over-reporting both revenue and profit." The report cited, among other things, J Capital's visits to "sites in China, Korea, and California" and "more than 40 interviews." J Capital asserted that "[w]hat real profit the company has is apparently being siphoned off to related parties." The J Capital report concluded that ACM's revenue was overstated by 15-20% and claimed to have "evidence that undisclosed related parties are diverting revenue and profit from the company." Following this news, ACM's stock price dropped $1.09 per share, or 1.52%, to close at $70.79 per share on October 8, 2020.

Restaurant Brands International Inc.(NYSE: QSR)Class Period: April 29, 2019 - October 28, 2019Deadline: February 19, 2021For more info:www.bgandg.com/qsrThe complaint alleges that the Shelf Registration Statements of the SPOs featured false and/or misleading statements and/or failed to disclose that: (1) Restaurant Brands Winning Together Plan was failing to generate substantial, sustainable improvement within the Tim Hortons brand; (2) the Tims Rewards loyalty program was not generating sustainable revenue growth as increased customer traffic was not offsetting promotional discounting; and (3) as a result, the defendants statements about Restaurant Brands business, operations, and prospects lacked a reasonable basis.

Contact:Bronstein, Gewirtz & Grossman, LLCPeretz Bronstein or Yael Hurwitz 212-697-6484 | info@bgandg.com