<SEC-DOCUMENT>0001127602-23-013177.txt : 20230419
<SEC-HEADER>0001127602-23-013177.hdr.sgml : 20230419
<ACCEPTANCE-DATETIME>20230419065530
ACCESSION NUMBER:		0001127602-23-013177
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20230418
FILED AS OF DATE:		20230419
DATE AS OF CHANGE:		20230419

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Guerrero Ramiro
		CENTRAL INDEX KEY:			0001913253

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-41455
		FILM NUMBER:		23828442

	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>X0407</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2023-04-18</periodOfReport>

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

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001913253</rptOwnerCik>
            <rptOwnerName>Guerrero Ramiro</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>444 WEST LAKE STREET, SUITE 1700</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>CHICAGO</rptOwnerCity>
            <rptOwnerState>IL</rptOwnerState>
            <rptOwnerZipCode>60606</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
        </reportingOwnerRelationship>
    </reportingOwner>

    <aff10b5One>1</aff10b5One>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2023-04-18</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness></transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>1263</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>4.17</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>302972.04</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">The purchases in this Form 4 were automatically effected pursuant to a previously executed purchasing plan for Mr. Guerrrero that is intended to comply with the Rule 10b5-1(c) promulgated under the Securites Exchange Act of 1934, as amended.</footnote>
        <footnote id="F2">The price reported is a weighted average price.  The shares were purchased in multiple transactions at prices ranging from $4.01 to $4.25, inclusive.  The Reporting Person undertakes to provide to the staff of the Securities and Exchange Commission, to any security holder of the Issuer, or to the Issuer, upon request, full information regarding the number of shares purchased at each separate price within the range set forth above.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Ramiro Guerrero</signatureName>
        <signatureDate>2023-04-19</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
