X0206 3 2017-05-24 0 0001441683 APPIAN CORP APPN 0001237289 SANDELL SCOTT D 1954 GREENSPRING DRIVE SUITE 600 TIMONIUM MD 21093 0 0 1 0 Series B Convertible Preferred Stock Class B Common Stock 6114338 I See Note 2 Each share of Series B Convertible Preferred Stock is convertible at any time at the option of the holder into one share of Class B Common Stock, has no expiration date and will convert into shares of Class B Common Stock upon the closing of the Issuer's initial public offering. The Reporting Person is a director of NEA 14 GP, LTD, which is the sole general partner of NEA Partners 14, L.P. ("NEA Partners 14"). NEA Partners 14 is the sole general partner of New Enterprise Associates 14, L.P. ("NEA 14"), which is the direct beneficial owner of the securities. The Reporting Person disclaims beneficial ownership, within the meaning of Section 16 of the Securities Exchange Act of 1934, as amended, or otherwise of such portion of the NEA 14 shares in which the Reporting Person has no pecuniary interest. /s/ Sasha Keough, attorney-in-fact 2017-05-24