 LOS ANGELES , Sept. 15, 2021 PRNewswire -- Glancy Prongay Murray LLP GPM reminds investors of the upcoming November 1, 2021 deadline to file a lead plaintiff motion in the class action filed on behalf of investors who purchased or otherwise acquired Spectrum Pharmaceuticals, Inc. Spectrum or the Company NASDAQ: SPPI securities between December 27, 2018 and August 5, 2021 , inclusive the Class Period. 