<SEC-DOCUMENT>0001562463-17-000012.txt : 20170118
<SEC-HEADER>0001562463-17-000012.hdr.sgml : 20170118
<ACCEPTANCE-DATETIME>20170118161319
ACCESSION NUMBER:		0001562463-17-000012
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20170116
FILED AS OF DATE:		20170118
DATE AS OF CHANGE:		20170118

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:		11201 USA PARKWAY
		CITY:			FISHERS
		STATE:			IN
		ZIP:			46037
		BUSINESS PHONE:		317-532-7900

	MAIL ADDRESS:	
		STREET 1:		11201 USA PARKWAY
		CITY:			FISHERS
		STATE:			IN
		ZIP:			46037

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Lovejoy David R.
		CENTRAL INDEX KEY:			0001568462

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-35750
		FILM NUMBER:		17533605

	MAIL ADDRESS:	
		STREET 1:		8888 KEYSTONE CROSSING, SUITE 1700
		CITY:			INDIANAPOLIS
		STATE:			IN
		ZIP:			46240
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>wf-form4_148477398497032.xml
<DESCRIPTION>FORM 4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2017-01-16</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

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

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001568462</rptOwnerCik>
            <rptOwnerName>Lovejoy David R.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>11201 USA PARKWAY</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>FISHERS</rptOwnerCity>
            <rptOwnerState>IN</rptOwnerState>
            <rptOwnerZipCode>46037</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>1</isOther>
            <officerTitle></officerTitle>
            <otherText>Vice Chairman of the Board</otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2017-01-16</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>938</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>9552</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: 80 shares were fully vested on the date of grant and 78 shares will vest on the fifteenth day of each month beginning on February 15, 2017 and ending on December 15, 2017.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Kenneth J. Lovik, Attorney-in-Fact for David R. Lovejoy (power of attorney previously filed)</signatureName>
        <signatureDate>2017-01-18</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
