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): September 22, 2026

MOBILE INFRASTRUCTURE CORPORATION

(Exact name of registrant as specified in its charter)

Registrant’s telephone number, including area code: (513) 834-5110

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:

Securities registered pursuant to Section 12(b) of the Act:

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. ☐

On September 22, 2026, Mobile Infrastructure Corporation (the “Company”) entered into a Fifth Amendment to Credit Agreement (the “Fifth Amendment”) with Harvest Small Cap Partners, L.P. and Harvest Small Cap Partners Master, Ltd., which amends the terms of that certain Credit Agreement, dated as of September 11, 2024, as amended by that certain First Amendment to Credit Agreement, dated as of September 5, 2025, that certain Second Amendment to Credit Agreement, dated as of December 22, 2025, that certain Third Amendment to Credit Agreement, dated as of March 24, 2026 and that certain Fourth Amendment to Credit Agreement, dated as of June 29, 2026 (as amended, the “Credit Agreement”), to extend the maturity date of the Credit Agreement from September 30, 2026 to December 31, 2026.

Mr. Jeffrey Osher, co-chair of the Company’s board of directors (the “Board”), is the managing member of No Street Capital LLC, which serves as the investment manager of Harvest Small Cap Partners, L.P. and Harvest Small Cap Partners Master, Ltd. Accordingly, the Amendment constitutes a related party transaction for the Company pursuant to Item 404 of Regulation S-K.

The foregoing description of the Fifth Amendment is not intended to be complete and is qualified in its entirety by reference to the Fifth Amendment attached as Exhibit 10.1 hereto.

The information contained in the disclosure set forth in Item 1.01 of this Current Report on Form 8-K is incorporated by reference into this Item 2.03.

Payment of Preferred Stock Dividends

On September 22, 2026, the Board authorized and the Company declared the payment of monthly dividends on (i) the shares of Series A Preferred Stock, par value $0.0001 per share (the “Series A Preferred Stock”), of the Company, which will be paid at a rate of $4.791 per share on or about October 12, 2026 (the “Payment Date”) and (ii) the shares of Series 1 Preferred Stock, par value $0.0001 per share (the “Series 1 Preferred Stock”), of the Company, which will be paid at a rate of $4.583 per share on or about the Payment Date (collectively, the “September Dividend”). The September Dividend will be payable to the respective holders of record of the Series A Preferred Stock and the Series 1 Preferred Stock as of the close of business on September 27, 2026 and September 24, 2026, respectively.

The declaration and payment of future dividends is subject to the Board’s discretion and will be determined by the Board based on the Company’s financial condition, applicable law and such other considerations as the Board deems relevant.

(d) Exhibits

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.