NEW YORK, June 30, 2023 /PRNewswire/ — WHY: Rosen Law Firm, a global investor rights law firm, reminds purchasers of common stock of Viatris Inc. (NASDAQ: VTRS) between March 1, 2021 and February 25, 2022, both dates inclusive (the “Class Period”), of the important July 14, 2023 lead…