<SEC-DOCUMENT>0001104659-25-087462.txt : 20250904
<SEC-HEADER>0001104659-25-087462.hdr.sgml : 20250904
<ACCEPTANCE-DATETIME>20250904160516
ACCESSION NUMBER:		0001104659-25-087462
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20250701
FILED AS OF DATE:		20250904
DATE AS OF CHANGE:		20250904

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			WILLIAMS DEMEAKEY VOSHAY Sr
		CENTRAL INDEX KEY:			0002071084
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-42463
		FILM NUMBER:		251293386

	MAIL ADDRESS:	
		STREET 1:		2220 LULLWATER CT
		CITY:			LAWRENCEVILLE
		STATE:			GA
		ZIP:			30043

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ScanTech AI Systems Inc.
		CENTRAL INDEX KEY:			0001994624
		STANDARD INDUSTRIAL CLASSIFICATION:	INSTRUMENTS FOR MEAS & TESTING OF ELECTRICITY & ELEC SIGNALS [3825]
		ORGANIZATION NAME:           	08 Industrial Applications and Services
		EIN:				933502562
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		1177 AVENUE OF THE AMERICA, SUITE 5100
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10036
		BUSINESS PHONE:		8886221218

	MAIL ADDRESS:	
		STREET 1:		1177 AVENUE OF THE AMERICA, SUITE 5100
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10036
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>tm2525278-1_4seq1.xml
<DESCRIPTION>OWNERSHIP DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0508</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2025-07-01</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001994624</issuerCik>
        <issuerName>ScanTech AI Systems Inc.</issuerName>
        <issuerTradingSymbol>STAI</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0002071084</rptOwnerCik>
            <rptOwnerName>WILLIAMS DEMEAKEY VOSHAY Sr</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1735 ENTERPRISE DRIVE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>BUFORD</rptOwnerCity>
            <rptOwnerState>GA</rptOwnerState>
            <rptOwnerZipCode>30518</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>See Remarks</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <aff10b5One>0</aff10b5One>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2025-07-01</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness></transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>343602</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.5064</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>347870</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                    <footnoteId id="F2"/>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By Crane Consulting Firm, Corp.</value>
                    <footnoteId id="F2"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Represents the grant of common stock pursuant to the 2023 ScanTech AI Systems Inc. Equity Incentive Plan.</footnote>
        <footnote id="F2">The Shares are held of record by Crane Consulting Firm, Corp. (&quot;Crane&quot;). Mr. Williams is the sole owner of Crane and in such capacity has voting and investment discretion with respect to the Shares held of record by Crane. By virtue of this relationship, Mr. Williams may be deemed to share beneficial ownership of the Shares held of record by Crane. Mr. Williams disclaims any such beneficial ownership except to the extent of his pecuniary interest therein.</footnote>
    </footnotes>

    <remarks>Senior Vice President of Sales, Business Development, and Investor Relations</remarks>

    <ownerSignature>
        <signatureName>/s/ DeMeakey Williams Crane Consulting Firm, Corp. /s/ DeMeakey Williams, Sole Owner</signatureName>
        <signatureDate>2025-09-04</signatureDate>
    </ownerSignature>
</ownershipDocument>
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</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
