0001441683-23-000025.txt : 20230307 0001441683-23-000025.hdr.sgml : 20230307 20230307160652 ACCESSION NUMBER: 0001441683-23-000025 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 2 CONFORMED PERIOD OF REPORT: 20230306 FILED AS OF DATE: 20230307 DATE AS OF CHANGE: 20230307 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Matheos Mark CENTRAL INDEX KEY: 0001903675 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-38098 FILM NUMBER: 23712635 MAIL ADDRESS: STREET 1: 7950 JONES BRANCH DRIVE CITY: MCLEAN STATE: VA ZIP: 22102 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: MCLEAN STATE: VA ZIP: 22102 BUSINESS PHONE: 703-442-8844 MAIL ADDRESS: STREET 1: 7950 JONES BRANCH DRIVE CITY: MCLEAN STATE: VA ZIP: 22102 4 1 wf-form4_167822319564541.xml FORM 4 X0306 4 2023-03-06 0 0001441683 APPIAN CORP APPN 0001903675 Matheos Mark 7950 JONES BRANCH DRIVE MCLEAN VA 22102 0 1 0 0 Chief Financial Officer Class A Common Stock 2023-03-06 4 M 0 4379 0 A 5133 D Class A Common Stock 2023-03-06 4 F 0 1354 44.64 D 3779 D Restricted Stock Unit 2023-03-06 4 M 0 4379 0 D Class A Common Stock 4379.0 0 D Each Restricted Stock Unit ("RSU") converts into Class A Common Stock on a one-for-one basis. The RSUs were granted on February 24, 2022, and vested on March 5, 2023. /s/ Angela Patterson, Attorney-in-Fact 2023-03-07 EX-24 2 matheos-section16poadecemb.htm POWER OF ATTORNEY (DEC 2021) MATHEOS Document

POWER OF ATTORNEY
Know all by these presents, that the undersigned hereby constitutes and appoints each of Christopher Winters, Angela Patterson, Nicole Brookshire, Mark Ballantyne and Jason Minio, signing individually, the undersigned’s true and lawful attorneys-in fact and agents to:
(1)execute for and on behalf of the undersigned, in the undersigned’s capacity as an officer, director or beneficial owner of more than 10% of a registered class of securities of Appian Corporation, Forms 3, 4, and 5 (including any amendments thereto) in accordance with Section 16(a) of the Securities Exchange Act of 1934, as amended (the “Exchange Act”) and the rules thereunder and a Form ID, Uniform Application for Access Codes to File on EDGAR;
(2)do and perform any and all acts for and on behalf of the undersigned that may be necessary or desirable to execute such Forms 3, 4, or 5, or Form ID (including any amendments thereto) and timely file such forms with the United States Securities and Exchange Commission and any stock exchange or similar authority, including creating a new passphrase and generating new EDGAR access codes via the EDGAR filer manager website; and
(3)take any other action of any nature whatsoever in connection with the foregoing which, in the opinion of such attorney-in-fact, may be of benefit, in the best interest of, or legally required by, the undersigned, it being understood that the documents executed by such attorney-in-fact on behalf of the undersigned pursuant to this Power of Attorney shall be in such form and shall contain such terms and conditions as such attorney-in-fact may approve in such attorney-in-fact’s discretion.

The undersigned hereby grants to each such attorney-in-fact full power and authority to do and perform any and every act and thing whatsoever requisite, necessary or proper to be done in the exercise of any of the rights and powers herein granted, as fully to all intents and purposes as the undersigned might or could do if personally present, with full power of substitution or revocation, hereby ratifying and confirming all that such attorney-in-fact, or such attorney-in-fact’s substitute or substitutes, shall lawfully do or cause to be done by virtue of this power of attorney and the rights and powers herein granted. The undersigned acknowledges that the foregoing attorneys-in-fact, in serving in such capacity at the request of the undersigned, are not assuming, nor is Appian Corporation assuming, any of the undersigned’s responsibilities to comply with Section 16 of the Exchange Act.
This Power of Attorney shall remain in full force and effect until the earliest to occur of (a) the undersigned is no longer required to file Forms 3, 4 and 5 with respect to the undersigned’s holdings of and transactions in securities issued by Appian Corporation, (b) revocation by the undersigned in a signed writing delivered to the foregoing attorneys-in-fact or (c) as to any attorney-in-fact individually, until such attorney-in-fact is no longer employed by Appian Corporation or Cooley LLP.
The undersigned has caused this Power of Attorney to be executed as of December 31, 2021.



/s/ Mark Matheos    
Mark Matheos