Business Wire | Aug 19, 2021 09:10PM EDT

SESEN ALERT: Bragar Eagel & Squire, P.C. is Investigating Sesen Bio, Inc. on Behalf of Sesen Stockholders and Encourages Investors to Contact the Firm

Aug. 20, 2021

NEW YORK--(BUSINESS WIRE)--Aug. 20, 2021--Bragar Eagel & Squire, P.C., a nationally recognized stockholder rights law firm, is investigating potential claims against Sesen Bio, Inc. ("Sesen" or the "Company") (NASDAQ: SESN) on behalf of Sesen stockholders. Our investigation concerns whether Sesen has violated the federal securities laws and/or engaged in other unlawful business practices.

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Sesen is a late-stage clinical company advancing targeted fusion protein therapeutics for the treatment of patients with cancer. Sesen's lead program is Vicineum(tm), also known as oportuzumab monatox. Vicineum is being developed for the treatment of BCG-unresponsive non-muscle invasive bladder cancer (NMIBC).

On August 13, 2021, Sesen announced that the U.S. Food and Drug Administration ("FDA") declined to approve its Biologics License Application for its bladder cancer treatment Vicineum in its current form. The FDA provided certain "recommendations specific to additional clinical/statistical data and analyses in addition to Chemistry, Manufacturing and Controls (CMC) issues pertaining to a recent pre-approval inspection and product quality."

Following this news, Sesen's stock price fell $2.80 per share, or 57%, to close at $2.11 per share on August 13, 2021.

If you purchased or otherwise acquired Sesen shares and suffered a loss, are a long-term stockholder, have information, would like to learn more about these claims, or have any questions concerning this announcement or your rights or interests with respect to these matters, please contact Brandon Walker, Melissa Fortunato, or Marion Passmore by email at investigations@bespc.com, telephone at (212) 355-4648, or by filling out this contact form. There is no cost or obligation to you.

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CONTACT: Bragar Eagel & Squire, P.C. Brandon Walker, Esq. Melissa Fortunato, Esq. Marion Passmore, Esq. (212) 355-4648 investigations@bespc.com www.bespc.com