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 23, 2026

Securities registered under Section 12(b) of the Exchange Act:

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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. ☐

On October 26, 2026, Boston Omaha Corporation ("Boston Omaha" or the "Company") filed a Form 8-K (the "Initial Form 8-K") with the Securities and Exchange Commission ( the "SEC") to report, among other things, that Boston Omaha had completed the sale of its General Indemnity Group, LLC ("GIG") business unit, consisting of GIG, BOSS Bonds Insurance Agency, LLC and United Casualty and Surety Insurance Company (the "Sale Transaction") to CopperPoint Insurance Company ("CopperPoint") pursuant to the terms of a Securities Purchase Agreement dated May 18, 2026 (the "SPA").

This Amendment No. 1 ("Amendment No. 1") to the Initial Form 8-K amends and supplements the Initial Form 8-K filed by the Company, and is being filed to provide the unaudited pro forma financial information required pursuuant to Item 9.01 (b) of Form 8-K. In accordance with the requirements of Item 9.01 (b)(1) of Form 8-K, this Amendment No. 1 is being filed within four business days following the date that the Sale Transaction was consummated.

b. Unaudited pro formal financial information.

The unaudited pro forma financial information with respect to the Company's divestiture of GIG through the Sale Transaction as of and for the years ended December 31, 2025 and December 31, 2024 is attached hereto as Exhibit 99.1. The Company previously reported the entry into the SPA agreement to sell GIG on a Form 8-K filed with the SEC on May 18, 2026 and the consummation of the Sale Transaction on the Initial Form 8-K filed with the SEC on October 26, 2026. In addition, the Company's quarterly report on Form 10-Q for the three and six month periods ended June 30, 2026 and June 30, 2025 reflected the financial results of GIG for the three and six-months ended June 30,2026 as discontinued operations.

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 29, 2026