NEW YORK, April 4, 2023 /PRNewswire/ — WHY: Rosen Law Firm, a global investor rights law firm, reminds purchasers of the securities of Signature Bank (NASDAQ: SBNY, SBNYP) between March 2, 2023 and March 12, 2023, both dates inclusive (the “Class Period”), of the important May 15, 2023…