 LOS ANGELES--BUSINESS WIRE--- MMSI CLASSACTION--Glancy Prongay Murray LLP GPM, a leading national shareholder rights law firm, today announces that it has commenced an investigation of potential claims against the board of directors of Merit Medical Systems, Inc. Merit Medical or the Company NASDAQ: MMSI concerning whether the board of directors breached its fiduciary duties to Merit Medical shareholders. If you still hold Merit Medical shares purchased before February 2019 and wish to discuss t 