X0609 4 2026-05-22 0001494582 BOSTON OMAHA Corp BOC 0001720104 Royal Jeffrey C false C/O BOSTON OMAHA CORPORATION 1601 DODGE STREET, SUITE 3300 OMAHA NE 68102 1 0 Class A common stock, par value $0.001 per share 2026-05-27 4 P 0 10000 12.72 A 69644 D Class A common stock, par value $0.001 per share 2026-05-22 4 P 0 10000 12.40 A 10000 I See Footnote Class A common stock, par value $0.001 per share 2026-05-26 4 P 0 11046 12.8176 A 21046 I See Footnote Class A common stock, par value $0.001 per share 2026-05-27 4 P 0 10000 12.82 A 31046 I See Footnote The reported shares are directly owned by Dundee BanCo, Inc. Mr. Royal is an officer of Dundee BanCo, Inc. Mr. Royal disclaims beneficial ownership with respect to the shares held by Dundee BanCo, Inc. except to the extent of his pecuniary interests therein, and this report shall not be deemed an admission of beneficial ownership of these securities for Section 16 or for any other purposes. The reported shares are directly owned by Dundee BanCo, Inc. Mr. Royal is an officer of Dundee BanCo, Inc. Mr. Royal disclaims beneficial ownership with respect to the shares held by Dundee BanCo, Inc. except to the extent of his pecuniary interests therein, and this report shall not be deemed an admission of beneficial ownership of these securities for Section 16 or for any other purposes. The shares purchased on May 26, 2026 were purchased in multiple transactions at an average price of $12.8176 per share and at individual transaction prices ranging from $12.60 to $12.84 per share. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote (1) to this Form 4. The reported shares are directly owned by Dundee BanCo, Inc. Mr. Royal is an officer of Dundee BanCo, Inc. Mr. Royal disclaims beneficial ownership with respect to the shares held by Dundee BanCo, Inc. except to the extent of his pecuniary interests therein, and this report shall not be deemed an admission of beneficial ownership of these securities for Section 16 or for any other purposes. /s/ Jeffrey C. Royal 2026-05-27