Initial Statement of Beneficial Ownership (3)

FORM 3	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES	OMB APPROVAL OMB Number: 3235-0104 Estimated average burden hours per response... 0.5
	Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940

1. Name and Address of Reporting Person ^*

Matheos Mark

2. Date of Event Requiring Statement (MM/DD/YYYY) 12/31/2021

3. Issuer Name and Ticker or Trading Symbol

APPIAN CORP [APPN]

(Last) (First) (Middle)

7950 JONES BRANCH DRIVE

4. Relationship of Reporting Person(s) to Issuer (Check all applicable)

_____ Director _____ 10% Owner
___X___ Officer (give title below) _____ Other (specify below)
Chief Accounting Officer /

(Street)

MCLEAN, VA 22102

(City) (State) (Zip)

5. If Amendment, Date Original Filed(MM/DD/YYYY)

6. Individual or Joint/Group Filing(Check Applicable Line)

_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1.Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)

*Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)*
1. Title of Derivate Security (Instr. 4)	2. Date Exercisable and Expiration Date (MM/DD/YYYY)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
1. Title of Derivate Security (Instr. 4)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	4. Conversion or Exercise Price of Derivative Security		6. Nature of Indirect Beneficial Ownership (Instr. 5)
Employee Stock Option (Right to Buy)	4/25/2022	4/25/2027	Class B Common Stock	4020.0	$12.0	D
Restricted Stock Unit	⁽¹⁾⁽²⁾	⁽¹⁾	Class A Common Stock	20.0	⁽¹⁾	D
Restricted Stock Unit	⁽¹⁾⁽³⁾	⁽¹⁾	Class A Common Stock	40.0	⁽¹⁾	D
Restricted Stock Unit	⁽¹⁾⁽⁴⁾	⁽¹⁾	Class A Common Stock	3393.0	⁽¹⁾	D
Restricted Stock Unit	⁽¹⁾⁽⁵⁾	⁽¹⁾	Class A Common Stock	3764.0	⁽¹⁾	D

Explanation of Responses:
(1)	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).
(2)	The RSUs were granted on October 25, 2017 and vest on November 5, 2022, provided that the Reporting Person has provided continuous service to the Issuer through the vesting date.
(3)	The RSUs were granted on April 27, 2018 and vest in two equal installments on each of May 5, 2022 and May 5, 2023, provided that the Reporting Person has provided continuous service to the Issuer through the vesting date.
(4)	The RSUs were granted on October 29, 2019 and vest in three equal installments on each of November 5, 2022, November 5, 2023 and November 5, 2024, provided that the Reporting Person has provided continuous service to the Issuer through the vesting date.
(5)	The RSUs were granted on May 4, 2021 and vest in four equal annual installments commencing on May 5, 2022, provided that the Reporting Person has provided continuous service to the Issuer through the vesting date.

Reporting Owners
Reporting Owner Name / Address	Relationships
Reporting Owner Name / Address	Director	10% Owner	Officer	Other
Matheos Mark 7950 JONES BRANCH DRIVE MCLEAN, VA 22102			Chief Accounting Officer