(NASDAQ:SPPI) NEW YORK, Aug. 29, 2025 /PRNewswire/ -- Why: Rosen Law Firm, a global investor rights law firm, reminds purchasers of common stock of Spectrum Pharmaceuticals, Inc. (NASDAQ: SPPI) between May 12, 2022 and September 22, 2022, both dates inclusive (the "Class Period"), of the important...