SKYH · Sky Harbour Group Corp

Represents restricted stock units ("RSUs") granted under the Sky Harbour Group Corporation 2022 Incentive Award Plan. Each RSU represents the contingent right to receive, in accordance with the terms of the applicable RSU agreement, one share of Class A Common Stock of the Issuer for each vested RSU. The RSUs vest in installments in accordance with the terms of the applicable RSU agreement, provided the reporting person remains in service through the applicable vesting date.

Reported amount includes 200,559 shares of Class A Common Stock and 510,029 RSUs.

Reported amount includes 15,000 shares of Class A Common Stock 7,910 RSUs.

All of the shares of Class A common stock sold as reported on this Form 4 were sold by Boston Omaha Corporation. As of the date of this report, Boston Omaha Corporation now owns 8,306,163 shares of the Class A common stock of Sky Harbour Group Corporation and United Casualty & Surety Insurance Company, a wholly-owned subsidiary of Boston Omaha Corporation, owns an additional 2,673,831 shares of the Class A common stock. Boston Omaha Corporation continues to own warrants to purchase 7,719,779 shares of Class A common stock of Sky Harbour Group Corporation.

Reported amount includes 10,000 shares of Class A Common Stock 7,910 RSUs.

Reported amount includes 40,927 shares of Class A Common Stock and 228,983 RSUs.

Represents the open-market purchase of 100 shares of Class A Common Stock intended to be distributed by Mr. Keinan as gifts.

Reported amount includes 5,000 shares of Class A Common Stock 7,910 RSUs.

All of the shares of Class A common stock sold as reported on this Form 4 were sold by Boston Omaha Corporation. As of the date of this report, Boston Omaha Corporation now owns 8,666,163 shares of the Class A common stock of Sky Harbour Group Corporation and United Casualty & Surety Insurance Company, a wholly-owned subsidiary of Boston Omaha Corporation, owns an additional 2,673,831 shares of the Class A common stock. Boston Omaha Corporation continues to own warrants to purchase 7,719,779 shares of Class A common stock of Sky Harbour Group Corporation.

Represents restricted stock units ("RSUs") granted under the Sky Harbour Group Corporation 2022 Incentive Award Plan. Each RSU represents the contingent right to receive, in accordance with the terms of the applicable RSU agreement, one share of Class A Common Stock of the Issuer for each vested RSU. The RSUs vest in installments in accordance with the terms of the applicable RSU agreement, provided the reporting person remains in service through the applicable vesting date.

Represents restricted stock units ("RSUs") granted under the Sky Harbour Group Corporation 2022 Incentive Award Plan. Each RSU represents the contingent right to receive, in accordance with the terms of the applicable RSU agreement, one share of Class A Common Stock of the Issuer for each vested RSU. The RSUs vest in installments in accordance with the terms of the applicable RSU agreement, provided the reporting person remains in service through the applicable vesting date.

Represents restricted stock units ("RSUs") granted under the Sky Harbour Group Corporation 2022 Incentive Award Plan. Each RSU represents the contingent right to receive, in accordance with the terms of the applicable RSU agreement, one share of Class A Common Stock of the Issuer for each vested RSU. The RSUs vest in installments in accordance with the terms of the applicable RSU agreement, provided the reporting person remains in service through the applicable vesting date.

Represents restricted stock units ("RSUs") granted under the Sky Harbour Group Corporation 2022 Incentive Award Plan. Each RSU represents the contingent right to receive, in accordance with the terms of the applicable RSU agreement, one share of Class A Common Stock of the Issuer for each vested RSU. The RSUs vest in installments in accordance with the terms of the applicable RSU agreement, provided the reporting person remains in service through the applicable vesting date.

Reported amount includes 14,233 RSUs.

Represents restricted stock units ("RSUs") granted under the Sky Harbour Group Corporation 2022 Incentive Award Plan. Each RSU represents the contingent right to receive, in accordance with the terms of the applicable RSU agreement, one share of Class A Common Stock of the Issuer for each vested RSU. The RSUs vest in installments in accordance with the terms of the applicable RSU agreement, provided the reporting person remains in service through the applicable vesting date.

Represents 208,705 shares of Class A Common Stock owned by Mr. Rozek and 42,233 restricted stock units ("RSUs") granted under the Sky Harbour Group Corporation 2022 Incentive Award Plan. Each RSU represents the contingent right to receive, in accordance with the terms of the applicable RSU agreement, one share of Class A Common Stock of the Issuer for each vested RSU. The RSUs will vest in four equal annual installments beginning on the first anniversary of the date of grant, provided the reporting person remains in service through the applicable vesting date.

Represents restricted stock units ("RSUs") granted under the Sky Harbour Group Corporation 2022 Incentive Award Plan. Each RSU represents the contingent right to receive, in accordance with the terms of the applicable RSU agreement, one share of Class A Common Stock of the Issuer for each vested RSU. The RSUs vest in installments in accordance with the terms of the applicable RSU agreement, provided the reporting person remains in service through the applicable vesting date.

Reported amount includes 42,233 RSUs.

Represents stock options granted under the Sky Harbour Group Corporation 2022 Incentive Award Plan. The stock options vest in installments in accordance with the terms of the applicable stock option agreement, provided the reporting person remains in service through the applicable vesting date.

Represents restricted stock units ("RSUs") granted under the Sky Harbour Group Corporation 2022 Incentive Award Plan. Each RSU represents the contingent right to receive, in accordance with the terms of the applicable RSU agreement, one share of Class A Common Stock of the Issuer for each vested RSU. The RSUs vest in installments in accordance with the terms of the applicable RSU agreement, provided the reporting person remains in service through the applicable vesting date.

Reported amount includes 42,233 RSUs.

Represents restricted stock units ("RSUs") granted under the Sky Harbour Group Corporation 2022 Incentive Award Plan. Each RSU represents the contingent right to receive, in accordance with the terms of the applicable RSU agreement, one share of Class A Common Stock of the Issuer for each vested RSU. The RSUs vest in installments in accordance with the terms of the applicable RSU agreement, provided the reporting person remains in service through the applicable vesting date.

Represents restricted stock units ("RSUs") granted under the Sky Harbour Group Corporation 2022 Incentive Award Plan. Each RSU represents the contingent right to receive, in accordance with the terms of the applicable RSU agreement, one share of Class A Common Stock of the Issuer for each vested RSU. The RSUs vest in installments in accordance with the terms of the applicable RSU agreement, provided the reporting person remains in service through the applicable vesting date.

Reported amount includes 25,220 RSUs.

Represents stock options granted under the Sky Harbour Group Corporation 2022 Incentive Award Plan. The stock options vest in installments in accordance with the terms of the applicable stock option agreement, provided the reporting person remains in service through the applicable vesting date.

Represents restricted stock units ("RSUs") granted under the Sky Harbour Group Corporation 2022 Incentive Award Plan. Each RSU represents the contingent right to receive, in accordance with the terms of the applicable RSU agreement, one share of Class A Common Stock of the Issuer for each vested RSU. The RSUs vest in installments in accordance with the terms of the applicable RSU agreement, provided the reporting person remains in service through the applicable vesting date.

Reported amount includes 1,000 shares of Class A Common Stock 42,233 RSUs.

Reported amount includes 184,879 shares of Class A Common Stock and 336,639 restricted stock units granted under the Sky Harbour Group Corporation 2022 Incentive Award Plan. Each RSU represents the contingent right to receive, in accordance with the terms of the applicable RSU agreement, one share of Class A Common Stock of the Issuer for each vested RSU. The RSUs will vest in four equal annual installments beginning on the first anniversary of the date of grant, provided the reporting person remains in service through the applicable vesting date.

Reported amount includes 180,379 shares of Class A Common Stock and 336,639 restricted stock units granted under the Sky Harbour Group Corporation 2022 Incentive Award Plan. Each RSU represents the contingent right to receive, in accordance with the terms of the applicable RSU agreement, one share of Class A Common Stock of the Issuer for each vested RSU. The RSUs will vest in four equal annual installments beginning on the first anniversary of the date of grant, provided the reporting person remains in service through the applicable vesting date.

Reported amount includes 1,000 shares of Class A Common Stock and 34,323 restricted stock units granted under the Sky Harbour Group Corporation 2022 Incentive Award Plan. Each RSU represents the contingent right to receive, in accordance with the terms of the applicable RSU agreement, one share of Class A Common Stock of the Issuer for each vested RSU. The RSUs will vest in four equal annual installments beginning on the first anniversary of the date of grant, provided the reporting person remains in service through the applicable vesting date.

Represents 568 shares of Class A Common Stock owned by Ms. Nancoo's spouse. Ms. Nancoo disclaims beneficial ownership except to the extent of her pecuniary interest 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 price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions on May 30, 2025 at prices ranging from $10.22 to $10.37, inclusive. 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 (3) to this Form 4.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions on May 29, 2025 at prices ranging from $10.50 to $10.95, inclusive. 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 (2) to this Form 4.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions on May 28, 2025 at prices ranging from $10.65 to $10.77, inclusive. 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 price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions on May 27, 2025 at prices ranging from $10.95 to $11.16, inclusive. 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 (3) to this Form 4.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions on May 23, 2025 at prices ranging from $10.67 to $10.89, inclusive. 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 (2) to this Form 4.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions on May 22, 2025 at prices ranging from $10.77 to $11.05, inclusive. 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 price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions on May 21, 2025 at prices ranging from $11.25 to $11.34, inclusive. 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 (3) to this Form 4.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions on May 20, 2025 at prices ranging from $11.50 to $11.80, inclusive. 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 (2) to this Form 4.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions on May 19, 2025 at prices ranging from $11.75 to $11.99, inclusive. 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.

Represents the payment of the reporting person's tax liability by withholding shares in connection with the vesting of an aggregate of 8,341 RSUs, which occurred monthly from May 17, 2025 to December 31, 2025. The value of the vested shares and the shares withheld to satisfy U.S. Federal and state income taxes is calculated based on the weighted-average closing price on the vesting date or next preceding trading date in the case that the vesting date is a non-trading date.

Represents 25,033 shares of Class A Common Stock and 58,408 RSUs.

Represents the payment of the reporting person's tax liability by withholding shares in connection with the vesting of an aggregate of 12,500 RSUs, which occurred monthly from May 17, 2025 to December 31, 2025. The value of the vested shares and the shares withheld to satisfy U.S. Federal and state income taxes is calculated based on the weighted-average closing price on the vesting date or next preceding trading date in the case that the vesting date is a non-trading date.

Reported amount includes 40,863 shares of Class A Common Stock and 228,983 RSUs.

Represents restricted stock units ("RSUs") granted under the Sky Harbour Group Corporation 2022 Incentive Award Plan. Each RSU represents the contingent right to receive, in accordance with the terms of the applicable RSU agreement, one share of Class A Common Stock of the Issuer for each vested RSU. The RSUs vest in installments in accordance with the terms of the applicable RSU agreement, provided the reporting person remains in service through the applicable vesting date.

Represents the payment of the reporting person's tax liability by withholding shares in connection with the vesting of an aggregate of 1,963 RSUs. The value of the vested shares and the shares withheld to satisfy U.S. Federal and state income taxes is calculated based on the weighted-average closing price on the vesting date or next preceding trading date in the case that the vesting date is a non-trading date.

Reported amount includes 19,141 shares of Class A Common Stock and 66,732 RSUs.

Represents the payment of the reporting person's tax liability by withholding shares in connection with the vesting of an aggregate of 10,000 RSUs. The value of the vested shares and the shares withheld to satisfy U.S. Federal and state income taxes is calculated based on the weighted-average closing price on the vesting date or next preceding trading date in the case that the vesting date is a non-trading date.

Reported amount includes 143,506 shares of Class A Common Stock and 361,112 RSUs.

Represents restricted stock units ("RSUs") granted under the Sky Harbour Group Corporation 2022 Incentive Award Plan. Each RSU represents the contingent right to receive, in accordance with the terms of the applicable RSU agreement, one share of Class A Common Stock of the Issuer for each vested RSU. The RSUs vest in installments in accordance with the terms of the applicable RSU agreement, provided the reporting person remains in service through the applicable vesting date.

Represents the payment of the reporting person's tax liability by withholding shares in connection with the vesting of an aggregate of 1,563 RSUs. The value of the vested shares and the shares withheld to satisfy U.S. Federal and state income taxes is calculated based on the weighted-average closing price on the vesting date or next preceding trading date in the case that the vesting date is a non-trading date.

Reported amount includes 34,808 shares of Class A Common Stock and 15,494 RSUs.

Represents the payment of the reporting person's tax liability by withholding shares in connection with the vesting of an aggregate of 1,043 RSUs. The value of the vested shares and the shares withheld to satisfy U.S. Federal and state income taxes is calculated based on the weighted-average closing price on the vesting date or next preceding trading date in the case that the vesting date is a non-trading date.

Represents 19,703 shares of Class A Common Stock and 32,851 RSUs.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions on April 28, 2025 at prices ranging from $10.80 to $10.96, inclusive. 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 (3) to this Form 4.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions on April 25, 2025 at prices ranging from $10.88 to $11.05, inclusive. 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 (2) to this Form 4.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions on April 24, 2025 at prices ranging from $10.97 to $11.25, inclusive. 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 price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions on April 23, 2025 at prices ranging from $10.95 to $11.36, inclusive. 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 (3) to this Form 4.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions on April 22, 2025 at prices ranging from $10.82 to $11.27, inclusive. 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 (2) to this Form 4.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions on April 21, 2025 at prices ranging from $10.90 to $11.24, inclusive. 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 price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions on April 17, 2025 at prices ranging from $11.09 to $11.35, inclusive. 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 (3) to this Form 4.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions on April 16, 2025 at prices ranging from $11.05 to $11.19, inclusive. 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 (2) to this Form 4.