<SEC-DOCUMENT>0001441683-20-000128.txt : 20201119
<SEC-HEADER>0001441683-20-000128.hdr.sgml : 20201119
<ACCEPTANCE-DATETIME>20201119160439
ACCESSION NUMBER:		0001441683-20-000128
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20201117
FILED AS OF DATE:		20201119
DATE AS OF CHANGE:		20201119

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Biddle Albert G.W. III
		CENTRAL INDEX KEY:			0001707248

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-38098
		FILM NUMBER:		201328843

	MAIL ADDRESS:	
		STREET 1:		11955 DEMOCRACY DRIVE
		STREET 2:		SUITE 1700
		CITY:			RESTON
		STATE:			VA
		ZIP:			20190

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			APPIAN CORP
		CENTRAL INDEX KEY:			0001441683
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-PREPACKAGED SOFTWARE [7372]
		IRS NUMBER:				541956084
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		7950 JONES BRANCH DRIVE
		CITY:			TYSONS
		STATE:			VA
		ZIP:			22102
		BUSINESS PHONE:		703-442-8844

	MAIL ADDRESS:	
		STREET 1:		7950 JONES BRANCH DRIVE
		CITY:			TYSONS
		STATE:			VA
		ZIP:			22102
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
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<DESCRIPTION>FORM 4
<TEXT>
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    <periodOfReport>2020-11-17</periodOfReport>

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        <issuerName>APPIAN CORP</issuerName>
        <issuerTradingSymbol>APPN</issuerTradingSymbol>
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            <rptOwnerStreet2>7950 JONES BRANCH DRIVE</rptOwnerStreet2>
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            <rptOwnerState>VA</rptOwnerState>
            <rptOwnerZipCode>22102</rptOwnerZipCode>
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        <nonDerivativeTransaction>
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            </transactionDate>
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                <transactionPricePerShare>
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        <nonDerivativeTransaction>
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                <directOrIndirectOwnership>
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                    <value>See Footnote</value>
                    <footnoteId id="F9"/>
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        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
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                    <value>2042</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>105.73</value>
                    <footnoteId id="F10"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
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            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>164772</value>
                </sharesOwnedFollowingTransaction>
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            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
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                <natureOfOwnership>
                    <value>See Footnote</value>
                    <footnoteId id="F11"/>
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        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Class A Common Stock</value>
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                <transactionShares>
                    <value>9053</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>107.32</value>
                    <footnoteId id="F12"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
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                </transactionAcquiredDisposedCode>
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                    <value>155719</value>
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                <directOrIndirectOwnership>
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                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
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            <transactionAmounts>
                <transactionShares>
                    <value>14858</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>108.33</value>
                    <footnoteId id="F13"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
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            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>140861</value>
                </sharesOwnedFollowingTransaction>
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            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See Footnote</value>
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            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Class A Common Stock</value>
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            <transactionDate>
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                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
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            <transactionAmounts>
                <transactionShares>
                    <value>3947</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>109.24</value>
                    <footnoteId id="F14"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
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            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>136914</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
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                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See Footnote</value>
                    <footnoteId id="F11"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Class A Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2020-11-17</value>
            </transactionDate>
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                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>100</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>109.46</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>136814</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See Footnote</value>
                    <footnoteId id="F11"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Class A Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>8443</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes>
        <footnote id="F1">On November 17, 2020, Southgate Partner I (&quot;SPI&quot;) distributed all of its shares to the beneficiary of SPI without consideration.</footnote>
        <footnote id="F2">The reported securities were owned directly by SPI, a family trust established for the benefit of the Reporting Person's child. The Reporting Person is the trustee of SPI.</footnote>
        <footnote id="F3">On November 17, 2020, Southgate Partner II (&quot;SPII&quot;) distributed all of its shares to the beneficiary of SPII without consideration.</footnote>
        <footnote id="F4">The reported securities were owned directly by SPII, a family trust established for the benefit of the Reporting Person's child. The Reporting Person is the trustee of SPII.</footnote>
        <footnote id="F5">On November 17, 2020, Southgate Partner III (&quot;SPIII&quot;) distributed all of its shares to the beneficiary of SPIII without consideration.</footnote>
        <footnote id="F6">The reported securities were owned directly by SPIII, a family trust established for the benefit of the Reporting Person's child. The Reporting Person is the trustee of SPIII.</footnote>
        <footnote id="F7">The reported securities are owned directly by a family trust established for the benefit of the Reporting Person's child (&quot;Trust I&quot;).  The Reporting Person is the trustee of Trust I.</footnote>
        <footnote id="F8">The reported securities are owned directly by a family trust established for the benefit of the Reporting Person's child (&quot;Trust II&quot;).  The Reporting Person is the trustee of Trust II.</footnote>
        <footnote id="F9">The reported securities are owned directly by a family trust established for the benefit of the Reporting Person's child (&quot;Trust III&quot;).  The Reporting Person is the trustee of Trust III.</footnote>
        <footnote id="F10">The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $105.12 to $105.73, inclusive. The Reporting Person undertakes to provide to Appian Corporation, any security holder of Appian Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in footnotes (10), (12), (13) and (14).</footnote>
        <footnote id="F11">The reported securities are owned directly by Jack Biddle, Inc. (&quot;JBI&quot;). The Reporting Person is the president of JBI.</footnote>
        <footnote id="F12">The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $106.33 to $107.32, inclusive.</footnote>
        <footnote id="F13">The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $107.35 to $108.33, inclusive.</footnote>
        <footnote id="F14">The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $108.36 to $109.24, inclusive.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Angela Patterson, Attorney-in-Fact</signatureName>
        <signatureDate>2020-11-19</signatureDate>
    </ownerSignature>
</ownershipDocument>
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</SEC-DOCUMENT>
