MAYFIELD VILLAGE, OHIO, June 14, 2024 (GLOBE NEWSWIRE) -- The Progressive Corporation (NYSE:PGR) today reported the following results for the month ended May 31, 2024:  May(millions, except per share amounts and ratios; unaudited) 2024Net premiums written$5,975.1Net premiums earned$5,857.5Net income$235.7Per share available to common shareholders$0.40Total pretax net realized gains (losses) on securities$117.6Combined ratio – current year 100.4                   – prior year month 99.0Average diluted equiva ...