X0508 4 2025-07-07 0000080661 PROGRESSIVE CORP/OH/ PGR 0001198113 Griffith Susan Patricia 300 NORTH COMMONS BLVD. MAYFIELD VILLAGE OH 44143 1 1 President and CEO 1 Common 2025-07-07 4 G 0 2285 0 D 476285.601 D Common 2025-07-07 4 G 0 2715 0 D 53737.096 I Husband's Trust Common 15757.628 I 401(k) Plan Common 19108 I Husband's Common This transaction reported on this Form 4 was made pursuant to a 10b5-1 trading plan adopted by the reporting person as of March 30, 2025. Held in a trust for the benefit of reporting person's spouse. /s/ Sarah R. D'Amore, By Power of Attorney 2025-07-09