X0609 4 2026-04-10 0000080661 PROGRESSIVE CORP/OH/ PGR 0001703228 Bleser Philip false 300 NORTH COMMONS BLVD. MAYFIELD VILLAGE OH 44143 1 0 Common 2026-04-10 4 D 0 739 0 D 0 D Phantom Stock Unit (rest. Stock) 2026-04-10 4 A 0 12.712 0 A Common 12.712 24273.0954 D Phantom Stock Unit (rest. Stock) 2026-04-10 4 A 0 739 0 A Common 739 25012.0954 D The reporting person elected to defer receipt of previously granted restricted Common Shares upon vesting thereof. This Form 4 reports the disposition of such restricted shares in exchange for an equal number of units under the applicable deferred compensation plan. 1 for 1 These units, which were acquired upon the reinvestment of dividend equivalents, will be paid out in cash at the time elected by the reporting person or at such other time determined in accordance with the plan. Expiration Date is the same as the Date Exercisable. These units will be paid out in an equal number of Common Shares at the time elected by the reporting person or at such other time determined in accordance with the plan. /s/ Allyson L. Bach, By Power of Attorney 2026-04-14