NEW YORK--(BUSINESS WIRE)--Halper Sadeh LLP, a global investor rights law firm, announces the filing of a shareholder class action lawsuit against Spring Bank Pharmaceuticals, Inc. (NASDAQ: SBPH) in connection with its merger with F-star Therapeutics Limited. The lawsuit seeks damages and/or equitable relief on behalf of Spring Bank shareholders under the federal securities laws. If you are a Spring Bank shareholder and would like to join the action, visit Spring Bank Class Action or contact Da