<SEC-DOCUMENT>0001127602-23-009770.txt : 20230310
<SEC-HEADER>0001127602-23-009770.hdr.sgml : 20230310
<ACCEPTANCE-DATETIME>20230310170116
ACCESSION NUMBER:		0001127602-23-009770
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20230308
FILED AS OF DATE:		20230310
DATE AS OF CHANGE:		20230310

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Vitoc Vlad
		CENTRAL INDEX KEY:			0001913257

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-41455
		FILM NUMBER:		23724555

	MAIL ADDRESS:	
		STREET 1:		444 WEST LAKE STREET, SUITE 1700
		CITY:			CHICAGO
		STATE:			IL
		ZIP:			60606

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MAIA Biotechnology, Inc.
		CENTRAL INDEX KEY:			0001878313
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		444 WEST LAKE STREET, SUITE 1700
		CITY:			CHICAGO
		STATE:			IL
		ZIP:			60606
		BUSINESS PHONE:		312-416-8592

	MAIL ADDRESS:	
		STREET 1:		444 WEST LAKE STREET, SUITE 1700
		CITY:			CHICAGO
		STATE:			IL
		ZIP:			60606
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>form4.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2023-03-08</periodOfReport>

    <issuer>
        <issuerCik>0001878313</issuerCik>
        <issuerName>MAIA Biotechnology, Inc.</issuerName>
        <issuerTradingSymbol>MAIA</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001913257</rptOwnerCik>
            <rptOwnerName>Vitoc Vlad</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1></rptOwnerStreet1>
            <rptOwnerStreet2>444 WEST LAKE STREET,</rptOwnerStreet2>
            <rptOwnerCity>CHICAGO</rptOwnerCity>
            <rptOwnerState>IL</rptOwnerState>
            <rptOwnerZipCode>60606</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <officerTitle>Chief Executive Officer</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Stock Options</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>4.10</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2023-03-08</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness></transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>200000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F1"/>
            </exerciseDate>
            <expirationDate>
                <value>2033-03-08</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>200000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>200000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">The stock options, granted on March 8, 2023 pursuant to MAIA Biotechnology, Inc.'s 2021 Equity Incentive Plan, representing the right to buy shares of common stock, vest on a 4-year vesting schedule, with 25% of the options to vest on the first anniversary of the date of grant and the remaining options to vest ratably monthly thereafter for 36 months.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Vlad Vitoc</signatureName>
        <signatureDate>2023-03-10</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
