=== SEC Form 3 — Statement of Changes in Beneficial Ownership ===
Document Type: 3
Period of Report: 2026-07-04
--- Issuer ---
Name: PROGRESSIVE CORP/OH/ (PGR)
CIK: 0000080661
--- Reporting Owner ---
Name: DAY HEATHER E
CIK: 0002141609
Role: Officer (CRM President)
--- Holdings ---
[Holding #1]
Security: Common
Ownership: D (Direct)
[Holding #2]
Security: Restricted Stock Unit
Ownership: D (Direct)
Footnotes:
[F3] Each Restricted Stock Unit represents a contingent right to receive one Common Share of the Company's stock.
[F1] Represents time-based restricted stock units granted to the reporting person by the issuer between 2022 and 2026 plus accrued dividend equivalents since the grant date. Subject to the terms of the applicable plan and award agreements, each award vests in three roughly equal installments in the third, fourth and fifth January following the date of grant, subject to earlier vesting or forfeiture in accordance with the plan and the award agreement. The following number of units are scheduled to vest on the following dates: 1/19/2027 - 1,322.286; 1/18/2028 - 1,027.948; 1/16/2029 - 894.304; 1/15/2030 - 572.429; and 1/21/2031 - 326.166.
[F2] Expiration Date is the same as the Date Exercisable.
--- Footnotes (Complete Index) ---
F1: Represents time-based restricted stock units granted to the reporting person by the issuer between 2022 and 2026 plus accrued dividend equivalents since the grant date. Subject to the terms of the applicable plan and award agreements, each award vests in three roughly equal installments in the third, fourth and fifth January following the date of grant, subject to earlier vesting or forfeiture in accordance with the plan and the award agreement. The following number of units are scheduled to vest on the following dates: 1/19/2027 - 1,322.286; 1/18/2028 - 1,027.948; 1/16/2029 - 894.304; 1/15/2030 - 572.429; and 1/21/2031 - 326.166.
F2: Expiration Date is the same as the Date Exercisable.
F3: Each Restricted Stock Unit represents a contingent right to receive one Common Share of the Company's stock.
--- Signature ---
/s/ /s/ Allyson L. Bach, By Power of Attorney (2026-07-09)
