<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0508</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2024-05-09</periodOfReport>

    <issuer>
        <issuerCik>0001823587</issuerCik>
        <issuerName>Sky Harbour Group Corp</issuerName>
        <issuerTradingSymbol>SKYH</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001689425</rptOwnerCik>
            <rptOwnerName>Rozek Alexander Buffett</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>3 SNOW ROAD #432</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>MARSHFIELD</rptOwnerCity>
            <rptOwnerState>MA</rptOwnerState>
            <rptOwnerZipCode>02050</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
        </reportingOwnerRelationship>
    </reportingOwner>

    <aff10b5One>0</aff10b5One>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Class A common stock</value>
                <footnoteId id="F1"/>
            </securityTitle>
            <transactionDate>
                <value>2024-05-17</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>J</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>236705</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>236705</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Class A common stock</value>
                <footnoteId id="F2"/>
            </securityTitle>
            <transactionDate>
                <value>2024-05-17</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>J</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>194738</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>194738</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See Footnote</value>
                    <footnoteId id="F3"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Class A common stock</value>
                <footnoteId id="F4"/>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>28000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Class A common stock</value>
            </securityTitle>
            <transactionDate>
                <value>2024-05-09</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>J</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>10000000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See Footnote</value>
                    <footnoteId id="F5"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Class A common stock</value>
            </securityTitle>
            <transactionDate>
                <value>2024-05-09</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>J</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>3118474</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See Footnote</value>
                    <footnoteId id="F6"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Represents 236,705 shares of Class A common stock, par value $0.0001 per share (&quot;Class A Common Stock&quot;), of Sky Harbour Group Corporation (the &quot;Company&quot;) distributed by Boston Omaha Corporation (&quot;BOC&quot;) to Mr. Rozek.</footnote>
        <footnote id="F2">Represents 194,738 shares of Class A Common Stock distributed by BOC to Boulderado Partners, LLC (&quot;BP&quot;).</footnote>
        <footnote id="F3">The reported shares are directly owned by BP. Boulderado Capital, LLC (&quot;BC&quot;) is the managing member of BP. Boulderado Group, LLC (&quot;BG&quot;) is the investment manager of BP. Mr. Rozek is the managing member of BP, BC and BG. BP, BC, BG and Mr. Rozek disclaim beneficial ownership except to the extent of their respective 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.</footnote>
        <footnote id="F4">Represents 28,000 restricted stock units (&quot;RSUs&quot;) 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.</footnote>
        <footnote id="F5">Reflects the reduction of 10,000,000 shares of Class A Common Stock held by BOC, which were previously reported as beneficially owned by the Reporting Person. The shares are no longer beneficially owned by the Reporting Person as a result of the Reporting Person's resignation as an officer and director of BOC and all of its direct and indirect subsidiaries, other than as a member of the board of directors of the Company, effective as of May 9, 2024.</footnote>
        <footnote id="F6">Reflects the reduction of 3,118,474 shares of Class A Common Stock held by BOC, which were previously reported as beneficially owned by the Reporting Person. The shares are no longer beneficially owned by the Reporting Person as a result of the Reporting Person's resignation as an officer and director of BOC and all of its direct and indirect subsidiaries, other than as a member of the board of directors of the Company, effective as of May 9, 2024.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Alex Rozek</signatureName>
        <signatureDate>2024-05-21</signatureDate>
    </ownerSignature>
</ownershipDocument>
