<SEC-DOCUMENT>0001562463-22-000029.txt : 20220120
<SEC-HEADER>0001562463-22-000029.hdr.sgml : 20220120
<ACCEPTANCE-DATETIME>20220120145146
ACCESSION NUMBER:		0001562463-22-000029
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20220118
FILED AS OF DATE:		20220120
DATE AS OF CHANGE:		20220120

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			WHITNEY RALPH R JR
		CENTRAL INDEX KEY:			0001029327

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-35750
		FILM NUMBER:		22542040

	MAIL ADDRESS:	
		STREET 1:		HAMMOND KENNEDY WHITNEY & CO INC
		STREET 2:		230 PARK AVENUE #1616
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10169

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			First Internet Bancorp
		CENTRAL INDEX KEY:			0001562463
		STANDARD INDUSTRIAL CLASSIFICATION:	STATE COMMERCIAL BANKS [6022]
		IRS NUMBER:				203489991
		STATE OF INCORPORATION:			IN
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		8701 E. 116TH STREET
		CITY:			FISHERS
		STATE:			IN
		ZIP:			46038
		BUSINESS PHONE:		317-532-7900

	MAIL ADDRESS:	
		STREET 1:		8701 E. 116TH STREET
		CITY:			FISHERS
		STATE:			IN
		ZIP:			46038
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>wf-form4_164270828642994.xml
<DESCRIPTION>FORM 4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2022-01-18</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001562463</issuerCik>
        <issuerName>First Internet Bancorp</issuerName>
        <issuerTradingSymbol>INBK</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001029327</rptOwnerCik>
            <rptOwnerName>WHITNEY RALPH R JR</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>8701 E. 116TH STREET</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>FISHERS</rptOwnerCity>
            <rptOwnerState>IN</rptOwnerState>
            <rptOwnerZipCode>46038</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2022-01-18</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>1106</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>28563</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes>
        <footnote id="F1">Restricted stock award scheduled to vest as follows: 94 shares were fully vested on the date of grant and 92 shares will vest on the fifteenth day of each month beginning on February 15, 2022 and ending on December 15, 2022.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Kenneth J. Lovik, Attorney-in-Fact for Ralph R. Whitney, Jr. (power of attorney previously filed)</signatureName>
        <signatureDate>2022-01-20</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
