Form 4 Filing: Andrew J. Quigg Acquires Restricted Stock Units in PROGRESSIVE CORP/OH/

Andrew J. Quigg, Chief Strategy & Finance Manager at PROGRESSIVE CORP/OH/, acquired 6.178 Restricted Stock Units (RSUs) on April 10, 2026. These RSUs were acquired upon the reinvestment of dividend equivalents and will vest at the same time as the RSUs to which they relate. Each RSU represents a contingent right to receive one Common Share of the Company's stock. The acquisition was made at a price of $0.0 per share, and Mr. Quigg now owns 12,157.188 shares following the transaction. The filing was signed by Allyson L. Bach, by Power of Attorney, on April 14, 2026.