SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13D

Under the Securities Exchange Act of 1934

(Amendment No. 5)

Sky Harbour Group Corp

(Name of Issuer)

Class A common stock, par value $0.0001 per share

(Title of Class of Securities)

83085C107

(CUSIP Number)

Joshua P. Weisenburger
Boston Omaha Corporation, 1601 Dodge Street, Suite 3300
Omaha, NE, 68102
(402) 201-2073

(Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications)

04/06/2026

(Date of Event Which Requires Filing of This Statement)

If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of §§ 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box. Checkbox not checked

The information required on the remainder of this cover page shall not be deemed to be “filed” for the purpose of Section 18 of the Securities Exchange Act of 1934 (“Act”) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

SCHEDULE 13D

CUSIP Number(s):

83085C107

Name of reporting person

BOSTON OMAHA Corp

Check the appropriate box if a member of a Group (See Instructions)

(a)

(b)

SEC use only

Source of funds (See Instructions)

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

Checkbox not checked

Citizenship or place of organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 19,059,773.00
8	Shared Voting Power
9	Sole Dispositive Power 19,059,773.00
10	Shared Dispositive Power

Aggregate amount beneficially owned by each reporting person

19,059,773.00

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

Checkbox not checked

Percent of class represented by amount in Row (11)

45.6 %

Type of Reporting Person (See Instructions)

Comment for Type of Reporting Person:

(1) Comprised of 11,339,994 shares of the Issuer's (as defined below) Class A common stock, par value $0.0001 (the "Class A Stock"), and warrants exercisable for 7,719,779 shares of Class A Stock ("Warrant Shares") held by the Reporting Person, each as of April 8, 2026. 45.56% of Class A common stock(2); 22.72% beneficial ownership of the combined voting Class A common stock and Class B common stock(3) (2) Calculated based on the shares of Class A Stock, including Warrant Shares, beneficially owned by the Reporting Person relative to the Issuer's 34,114,924 outstanding shares of Class A Stock, as of March 12, 2026, as reported in the Issuer's Annual Report on Form 10-K filed with the SEC on March 19, 2026, plus the 7,719,779 Warrant Shares owned by the Reporting Person. (3) Calculated based on the shares of Class A Stock, including Warrant Shares, beneficially owned by the Reporting Person relative to the Issuer's 34,114,924 outstanding shares of Class A Stock and 42,046,356 outstanding shares of Class B common stock, par value $0.0001 per share ("Class B Stock" and together with the Class A Stock, the "Common Stock"), as of March 12, 2026, as reported in the Issuer's Annual Report on Form 10-K filed with the SEC on March 19, 2026, plus the 7,719,779 Warrant Shares owned by the Reporting Person.

SCHEDULE 13D

Item 1.

Security and Issuer

(a)

Title of Class of Securities:

Class A common stock, par value $0.0001 per share

(b)

Name of Issuer:

Sky Harbour Group Corp

(c)

Address of Issuer's Principal Executive Offices:

1601 DODGE STREET, OMAHA, NEBRASKA , 68102.

Item 1 Comment:

This Amendment No. 5 to Schedule 13D (this "Amendment No. 3") amends and supplements the Schedule 13D filed with the U.S. Securities and Exchange Commission (the "SEC") on February 4, 2022, as amended and supplemented by (i) Amendment No. 1 to Schedule 13D, filed with the SEC on May 21, 2024, (ii) Amendment No. 2 to Schedule 13D, filed with the SEC on May 31, 2024, (iii) Amendment No. 3 to Schedule 13D, filed with the SEC on February 14, 2025, and (iv) Amendment No. 4 to Schedule 13D, filed with the SEC on April 28, 2025 (as so amended and supplemented, the "Schedule 13D"). As further described in Item 4, this Amendment No. 5 is being filed in connection with the sale of shares of Class A Stock by the Reporting Person. Each capitalized term used but not defined herein has the meaning ascribed to such term in the Schedule 13D.

Item 2.

Identity and Background

(a)

Item 2(a) of the Original Schedule 13D is hereby amended and restated in its entirety as follows: (a) This Schedule 13D is being filed by Boston Omaha Corporation, a Delaware corporation (the "Reporting Person"), and includes 2,673,831 shares of Class A Stock held by its indirect, wholly-owned subsidiary United Casualty and Surety Insurance Company. All investment and voting decisions for the Class A Stock held by the Reporting Person are made by the Reporting Person based on the consent of its investment committee, comprised of Mr. Adam K. Peterson and Mr. Joshua P. Weisenburger, each of whom expressly disclaims any beneficial ownership of the reported securities other than to the extent of any pecuniary indirect interest he may have therein as a stockholder of the Reporting Person. Current information concerning the identity and background of the directors and officers of the Reporting Person is set forth in Exhibit 2.1 attached hereto, which is incorporated by reference to this Item 2.

Item 4.

Purpose of Transaction

Item 4 of the Schedule 13D is hereby supplemented as follows: From April 25, 2025 through April 6, 2026, the Reporting Person sold an aggregate of 534,124 shares of Class A Stock at price ranging between $9.05 and $11.99 per share, for total gross proceeds of $5,205,072.59, pursuant to an effective registration statement and under Rule 144 under the Securities Act of 1933, as amended. As a consequence, the Reporting Person's beneficial ownership decreased to 19,059,773 shares of Class A Stock (including the 7,719,779 Warrant Shares). The Reporting Person's beneficial ownership represents 45.56% of the outstanding Class A Stock and 22.72% of the combined voting Common Stock, a decrease primarily caused by such sale by the Reporting Person of 331,500 shares of Class A Stock on April 6, 2026 and additional shares sold during the period from April 25, 2025 through May 30, 2025. A schedule of each such sale transaction by the Reporting Person is attached hereto as Exhibit 4.1.

Item 5.

Interest in Securities of the Issuer

(a)

Item 5 of the Original Schedule 13D is hereby amended and restated in its entirety as follows: (a) - (b) The following sets forth, as of the date of this Amendment No. 5, the aggregate number of shares of Issuer's Class A Stock and percentage of Class A Stock (including Warrant Shares) beneficially owned by the Reporting Person, and which the Reporting Person has the sole or shared power to vote or to direct the vote, sole or shared power to dispose or to direct the disposition of, as of the date hereof, based on 34,114,924 outstanding shares of Class A Stock of the Issuer, as of March 12, 2026, as reported by the Issuer in its Annual Report on Form 10-K filed with the SEC on March 19, 2026 plus the Warrant Shares. The following also sets forth the combined voting power of the 19,059,773 shares of Class A Stock (including Warrant Shares) beneficially owned by the Reporting Person relative to the Issuer's total outstanding Common Stock, as to which the Reporting Person has the sole or shared power to vote or to direct the vote, and sole or shared power to dispose or to direct the disposition of, as of the date hereof, based on 34,114,924 shares of the Issuer's Class A Stock and 42,046,356 shares of the Issuer's Class B Stock issued and outstanding as of as of March 12, 2026, as reported by the Issuer in its Annual Report on Form 10-K filed with the SEC on March 19, 2026, plus the Warrant Shares. (1) Consists of 11,339,994 shares of Class A Stock and 7,719,779 Warrant Shares held by the Reporting Person. (2) Calculated based on the shares of Class A Stock, including Warrant Shares, beneficially owned by the Reporting Person relative to the Issuer's 34,114,924 outstanding shares of Class A Stock, as of March 12, 2026, as reported by the Issuer in its Annual Report on Form 10-K filed with the SEC on March 19, 2026, plus the 7,719,779 Warrant Shares. (3) Calculated based on the shares of Class A Stock, including Warrant Shares, beneficially owned by the Reporting Person relative to the Issuer's 34,114,924 outstanding shares of Class A Stock and 42,046,356 outstanding shares of Class B Stock, as of March 12, 2026, as reported by the Issuer in its Annual Report on Form 10-K filed with the SEC on March 19, 2026, plus the 7,719,779 Warrant Shares. Holders of Class A Stock and Class B Stock are entitled to one vote per share on all matters submitted to the stockholders for their vote or approval.

(b)

(c)

Except as described elsewhere in this Amendment No. 5, including in Item 4 and Exhibit 4.1 incorporated herein by reference, during the past 60 days, neither the Reporting Person nor, to the knowledge of the Reporting Person, any person named in Item 2 hereof, have effected any transactions with respect to the Issuer's Class A Stock.

(d)

No person other than the Reporting Person is known to have the right to receive, or the power to direct the receipt of dividends from, or proceeds from the sale of, the shares of the Issuer's Class A Stock.

(e)

Not applicable.

Item 6.

Contracts, Arrangements, Understandings or Relationships With Respect to Securities of the Issuer

The information in Item 5 of this Amendment No. 5 is incorporated by reference into this Item 6.

Item 7.

Material to be Filed as Exhibits.

Exhibit 2.1 Schedule of Officers and Directors Exhibit 4.1 Schedule of Transactions for Item 4 and Item 5(c) of Amendment No. 5.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

BOSTON OMAHA Corp

Signature:	/s/ Adam K. Peterson
Name/Title:	Adam K. Peterson, President and Chief Executive Officer
Date:	04/08/2026

Amendment: SEC Form SCHEDULE 13D/A filed by Sky Harbour Group Corporation