X0306 4 2018-09-28 0 0001441683 APPIAN CORP APPN 0001706771 Boccassam Prashanth C/O APPIAN CORPORATION 11955 DEMOCRACY DRIVE, SUITE 1700 RESTON VA 20190 1 0 0 0 Class A Common Stock 2018-09-28 4 J 0 594 0.00 A 64869 D Class A Common Stock 2018-09-28 4 J 0 42054 0.00 A 106923 D Class A Common Stock 2018-10-01 4 A 0 528 0.00 A 107451 D Represents a pro rata distribution without additional consideration by Novak Biddle Venture Partners V, L.P. to its limited partners. Represents a pro rata distribution without additional consideration by Novak Biddle Company V, LLC to its partners. These shares were granted under the Issuer's 2017 Equity Incentive Plan pursuant to the Issuer's Non-Employee Director Compensation Policy approved by the Board of Directors on May 10, 2017. /s/ Christopher Winters, Attorney-in-Fact 2018-10-02