Sky Harbour Group Corporation

Item 7.01. Regulation FD Disclosure. On August 21, 2026, Sky Harbour Group Corporation, a Delaware corporation (the “Company”), issued a press release (the “Press Release”) which announced the entry into the Stock Purchase Agreement (as defined below). A copy of the Press Release is furnished hereto as Exhibit 99.1 to this Current Report on Form 8-K and incorporated into this Item 7.01 by reference. The furnishing of the Press Release is not an admission as to the materiality of any information therein. The information contained in the Press Release is summary information that is intended to be considered in the context of more complete information included in the Company’s filings with the U.S. Securities and Exchange Commission (the “SEC”) and other public announcements that the Company has made and may make from time to time by press release or otherwise. The Company undertakes no duty or obligation to update or revise the information contained in this report, although it may do so from time to time as its management believes is appropriate. Any such updating may be made through the filing of other reports or documents with the SEC, through press releases or through other public disclosures. The information contained in this Item 7.01, including Exhibit 99.1 hereto, shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that section or Sections 11 and 12(a)(2) of the Securities Act of 1933, as amended (the “Securities Act”). The information contained in this Item 7.01 and the Press Release shall not be incorporated by reference in any filing under the Securities Act or the Exchange Act, except as shall be expressly set forth by specific reference in any such filing.

Item 8.01. Other Events. On August 21, 2026, the Company entered into a Stock Purchase Agreement (the “Stock Purchase Agreement”) with M-COR Capital LLC, a Delaware limited liability company (the “Investor”), pursuant to which the Company agreed to sell 1,000,000 shares of its Class A common stock, $0.0001 par value per share (the “Common Stock”), to the Investor in a registered direct offering at a purchase price of $10.00 per share. The Company expects the offering to close on or before August 26, 2026, subject to customary closing conditions. The Company expects to receive aggregate gross proceeds of approximately $10.0 million from the offering, before deducting offering-related expenses. The Company intends to use the net proceeds for general corporate purposes. The offering is expected to be conducted pursuant to the Company's effective shelf registration statement on Form S-3 (Registration No. 333-278275), including a base prospectus dated April 10, 2024 and a prospectus supplement dated on or before August 26, 2026. Cautionary Statement Regarding Forward-Looking Statements This Current Report on Form 8-K includes “forward-looking statements” within the meaning of the safe harbor provisions of the U.S. Private Securities Litigation Reform Act of 1995. Certain of these forward-looking statements can be identified by the use of words such as “believes,” “expects,” “intends,” “plans,” “estimates,” “assumes,” “may,” “should,” “will,” “seeks,” or other similar expressions. These statements are based on current expectations on the date of this Form 8-K and involve a number of risks and uncertainties that may cause actual results to differ significantly. The Company does not assume any obligation to update or revise any such forward-looking statements, whether as the result of new developments or otherwise. Readers are cautioned not to put undue reliance on forward-looking statements. Important factors that could cause actual results to differ materially from those in the forward-looking statements include the risks described in the “Risk Factors” section of the Company’s Annual Report on Form 10-K for the year ended December 31, 2025 and its other filings with the SEC.