Results of Operations · Reg FD Disclosure

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT   Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) October 13, 2023 THE PROGRESSIVE CORPORATION (Exact name of registrant as specified in its charter) Ohio 001-09518 34-0963169 (State or other jurisdiction of incorporation) (Commission File Number) (IRS Employer Identification No.) 6300 Wilson Mills Road, Mayfield Village, Ohio   44143 (Address of principal executive offices)   (Zip Code) Registrant’s telephone number, including area code ( 440 ) 461-5000 Not Applicable (Former name or former address, if changed since last report.) Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions: ☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ☐     Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ☐     Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) Securities registered pursuant to Section 12(b) of the Act: Title of each class Trading Symbol(s) Name of each exchange on which registered Common Stock, $1.00 Par Value PGR New York Stock Exchange Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company ☐ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐ Item 2.02 Results of Operations and Financial Condition. On October 13, 2023, The Progressive Corporation (“the Company”) issued a news release containing financial results for the Company and its consolidated subsidiaries for the month of, and year-to-date period ended, September 2023 and selected quarterly financial results. A copy of the news release is attached hereto as Exhibit 99. Item 7.01 Regulation FD Disclosure. On October 13, 2023, the Company's Board of Directors declared a dividend on our outstanding Series B Fixed-to-Floating Rate Cumulative Perpetual Serial Preferred Shares (the “Series B Preferred Shares”) in the amount of $20.753157 per Series B Preferred Share, or approximately $10.4 million in the aggregate. The dividend , which is based on the annual rate of 8.21004% (equal to the sum of (i) 3-Month CME Term Secured Overnight Financing Rate (SOFR) as of September 13, 2023, (ii) a tenor spread adjustment of 0.26161%, and (iii) 2.539%) of the stated amount of $1,000 per Series B Preferred Share, will be paid on December 15, 2023, to shareholders of record at the close of business on December 1, 2023. Item 9.01 Financial Statements and Exhibits. (d) Exhibits See exhibit index on page 3. - 1 - 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 hereunto duly authorized. Date: October 13, 2023 THE PROGRESSIVE CORPORATION By: /s/ Mariann Wojtkun Marshall Name: Mariann Wojtkun Marshall Title: Vice President and Chief Accounting Officer - 2 - EXHIBIT INDEX Exhibit No. Under Reg. S-K Item 601 Form 8-K Exhibit No. Description 99 99 News release dated October 13, 2023, containing financial results of The Progressive Corporation and its consolidated subsidiaries for the month of, and year-to-date period ended, September 2023 and selected quarterly financial results. 104 104 Cover Page Interactive Data File (the cover page tags are embedded within the Inline XBRL document). - 3 -