<SEC-DOCUMENT>0001309402-21-000046.txt : 20210323
<SEC-HEADER>0001309402-21-000046.hdr.sgml : 20210323
<ACCEPTANCE-DATETIME>20210323184719
ACCESSION NUMBER:		0001309402-21-000046
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20210319
FILED AS OF DATE:		20210323
DATE AS OF CHANGE:		20210323

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			MAPES MICHELLE
		CENTRAL INDEX KEY:			0001475659

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-32924
		FILM NUMBER:		21766003

	MAIL ADDRESS:	
		STREET 1:		1811 AKSARBEN DRIVE
		CITY:			OMAHA
		STATE:			NE
		ZIP:			68106

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Green Plains Inc.
		CENTRAL INDEX KEY:			0001309402
		STANDARD INDUSTRIAL CLASSIFICATION:	INDUSTRIAL ORGANIC CHEMICALS [2860]
		IRS NUMBER:				841652107
		STATE OF INCORPORATION:			IA
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		1811 AKSARBEN DRIVE
		CITY:			OMAHA
		STATE:			NE
		ZIP:			68106
		BUSINESS PHONE:		402-884-8700

	MAIL ADDRESS:	
		STREET 1:		1811 AKSARBEN DRIVE
		CITY:			OMAHA
		STATE:			NE
		ZIP:			68106

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Green Plains Renewable Energy, Inc.
		DATE OF NAME CHANGE:	20100106

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	GREEN PLAINS RENEWABLE ENERGY, INC.
		DATE OF NAME CHANGE:	20060314

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Green Plains Renewable Energy, Inc.
		DATE OF NAME CHANGE:	20041123
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>certent-form4.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2021-03-19</periodOfReport>

    <issuer>
        <issuerCik>0001309402</issuerCik>
        <issuerName>Green Plains Inc.</issuerName>
        <issuerTradingSymbol>GPRE</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001475659</rptOwnerCik>
            <rptOwnerName>MAPES MICHELLE</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1811 AKSARBEN DRIVE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>OMAHA</rptOwnerCity>
            <rptOwnerState>NE</rptOwnerState>
            <rptOwnerZipCode>68106</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Chief Legal and Admin Officer</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2021-03-19</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>F</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>4358</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>25.63</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>54447</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2021-03-19</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>3679</value>
                    <footnoteId id="F2"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>58126</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Disposition reported represents tax withholding on the portion of a previously reported grant that vested on date indicated herein.</footnote>
        <footnote id="F2">Represents shares issued under the March 2018 PSU grant based upon satisfaction of the performance criteria, which resulted in 75% of the target vesting of PSUs, net of withholdings.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Michelle Mapes</signatureName>
        <signatureDate>2021-03-23</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
