APPIAN CORP — Director's Dealing 2021

May 6, 2021

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: APPIAN CORP (APPN)
CIK: 0001441683
Period of Report: 2021-05-04

Reporting Person: Cross Eric Calvin (Chief Revenue Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2021-05-06	Class A Common Stock	M	7524	—	Acquired	7524	Direct
2021-05-06	Class A Common Stock	S	150	$98.82	Disposed	7374	Direct
2021-05-06	Class A Common Stock	S	620	$99.71	Disposed	6754	Direct
2021-05-06	Class A Common Stock	S	1800	$100.99	Disposed	4954	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2021-05-04	Restricted Stock Unit	$	A	5648	Acquired		Class A Common Stock (5648.0)	Direct
2021-05-06	Restricted Stock Unit	$	M	7524	Disposed		Class A Common Stock (7524.0)	Direct

Footnotes

F1: Each Restricted Stock Unit ("RSU") converts into Class A Common Stock on a one-for-one basis.

F2: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on February 25, 2021.

F3: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $98.23 to $99.11, 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 (3) - (5).

F4: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $99.23 to $100.13, inclusive.

F5: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $100.68 to $101.15, inclusive.

F6: Each RSU represents a contingent right to receive one share of Issuer's Class A Common Stock (or its cash equivalent, at the discretion of the Issuer).

F7: The RSUs will vest in four (4) equal annual installments commencing on the one-year anniversary of May 5, 2021, provided that the Reporting Person has provided continuous service to the Issuer through the vesting date.

F8: The RSUs were granted on 6/4/2020 and 7,524 of the RSUs vested on 5/5/2021, 7,524 RSUs will vest on each of 5/5/2022 and 5/5/2023, and 3,224 of the RSUs will vest on 5/5/2024, provided that the Reporting Person has provided continuous service to the Issuer through each vesting date.