PROGRESSIVE CORP/OH/ 10-Q

Item 5. Other Information. • During the three months ended September 30, 2023, no director or officer of the Company adopted or terminated a “Rule 10b5-1 trading arrangement” or “non-Rule 10b5-1 trading arrangement,” as each term is defined in Item 408(a) of Regulation S-K. • President and CEO Susan Patricia Griffith’s quarterly letter to shareholders is included as Exhibit 99 to this Quarterly Report on Form 10-Q and in our online shareholders’ report located on our investor relations website at: investors.progressive.com/financials. Item 6. Exhibits. See exhibit index contained herein beginning on page 60, wh ich is incorporated by reference from information with respect to this item. 58 SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized. THE PROGRESSIVE CORPORATION (Registrant) Date: October 31, 2023 By: /s/ John P. Sauerland John P. Sauerland Vice President and Chief Financial Officer 59 EXHIBIT INDEX Exhibit No. Under Reg. S-K, Item 601 Form 10-Q Exhibit Number Description of Exhibit If Incorporated by Reference, Documents with Which Exhibit was Previously Filed with SEC 31 31.1 Rule 13a-14(a)/15d-14(a) Certification of the Principal Executive Officer, Susan Patricia Griffith Filed herewith 31 31.2 Rule 13a-14(a)/15d-14(a) Certification of the Principal Financial Officer, John P. Sauerland Filed herewith 32 32.1 Section 1350 Certification of the Principal Executive Officer, Susan Patricia Griffith Furnished herewith 32 32.2 Section 1350 Certification of the Principal Financial Officer, John P. Sauerland Furnished herewith 99 99 Letter to Shareholders from Susan Patricia Griffith, President and Chief Executive Officer (Regulation FD Disclosure) Furnished herewith 101 101.INS XBRL Instance Document - the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document Filed herewith 101 101.SCH Inline XBRL Taxonomy Extension Schema Document Filed herewith 101 101.CAL Inline XBRL Taxonomy Extension Calculation Linkbase Document Filed herewith 101 101.DEF Inline XBRL Taxonomy Extension Definition Linkbase Document Filed herewith 101 101.LAB Inline XBRL Taxonomy Extension Label Linkbase Document Filed herewith 101 101.PRE Inline XBRL Taxonomy Extension Presentation Linkbase Document Filed herewith 104 104 Cover Page Interactive Data File (the cover page tags are embedded within the Inline XBRL document) Filed herewith 60