SEC Form 4

FORM 4		UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940	OMB APPROVAL OMB Number: 3235-0287 Estimated average burden hours per response: 0.5
	Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person* Biddle Albert G.W. III (Last) (First) (Middle) 11955 DEMOCRACY DRIVE SUITE 1700 (Street) RESTON VA 20190 (City) (State) (Zip)	2. Issuer Name and Ticker or Trading Symbol APPIAN CORP [ APPN ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X Director X 10% Owner Officer (give title below) Other (specify below)
	3. Date of Earliest Transaction (Month/Day/Year) 03/14/2018
	4. If Amendment, Date of Original Filed (Month/Day/Year)	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 Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Class A Common Stock	03/14/2018		C(1)		209,244	A	(2)(3)	209,244	I	See Footnote(4)
Class A Common Stock	03/14/2018		J(5)		209,244	D	$0	0	I	See Footnote(4)
Class A Common Stock	03/14/2018		C(1)		2,137,674	A	(2)(3)	2,137,674	I	See Footnote(6)
Class A Common Stock	03/14/2018		J(7)		2,137,674	D	$0	0	I	See Footnote(6)
Class A Common Stock	03/14/2018		J(7)		1,902	A	$0	2,792	I	See Footnote(8)
Class A Common Stock								3,220	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Class B Common Stock	(2)(3)	03/14/2018		C(1)			209,244	(2)(3)	(2)(3)	Class A Common Stock	209,244	$0	1,477,988	I	See Footnote(4)
Class B Common Stock	(2)(3)	03/14/2018		J(5)			153,082	(2)(3)	(2)(3)	Class A Common Stock	153,082	$0	1,324,906	I	See Footnote(4)
Class B Common Stock	(2)(3)	03/14/2018		J(5)		54,801		(2)(3)	(2)(3)	Class A Common Stock	54,801	$0	54,801	I	See Footnote(8)
Class B Common Stock	(2)(3)	03/14/2018		J(5)		7,247		(2)(3)	(2)(3)	Class A Common Stock	7,247	$0	7,247	I	See Footnote(9)
Class B Common Stock	(2)(3)	03/14/2018		J(5)		7,247		(2)(3)	(2)(3)	Class A Common Stock	7,247	$0	7,247	I	See Footnote(10)
Class B Common Stock	(2)(3)	03/14/2018		J(5)		7,247		(2)(3)	(2)(3)	Class A Common Stock	7,247	$0	7,247	I	See Footnote(11)
Class B Common Stock	(2)(3)	03/14/2018		C(1)			2,137,674	(2)(3)	(2)(3)	Class A Common Stock	2,137,674	$0	6,423,308	I	See Footnote(6)

Explanation of Responses:

1. Pursuant to the terms of the Class B Common Stock, the Reporting Person converted shares of Class B Common Stock into shares of Class A Common Stock.

2. Each share of Class B Common Stock is convertible at any time at the option of the holder into one share of Class A Common Stock and has no expiration date. In addition, each share of Class B Common Stock will convert automatically into one share of Class A Common Stock upon (1) any transfer, whether or not for value and whether voluntary or involuntary or by operation of law, except for certain transfers described in the Issuer's certificate of incorporation, including, without limitation, certain transfers for tax and estate planning purposes or (continued to Footnote (3))

3. (continued from Footnote (2)) (2) the death or disability, as defined in the Issuer's certificate of incorporation, of the applicable Class B common stockholder (or nine months after the date of death or disability if the stockholder is one of the Issuer's founders). In addition, on the first trading day following the date on which the outstanding shares of Class B Common Stock represent less than 10% of the aggregate voting power of the Issuer's then outstanding capital stock, all outstanding shares of Class B Common Stock shall convert automatically into Class A Common Stock, and no additional shares of Class B Common Stock will be issued.

4. The reported securities are owned directly by Novak Biddle Company V, LLC ("NBCV"). The Reporting Person and E. Rogers Novak, Jr. (collectively, the "Managing Members") are the managing members of NBCV. The Managing Members disclaim beneficial ownership of all the shares owned by the NBCV and this report shall not be deemed an admission that they are the beneficial owner of such shares for purposes of Section 16 or for any other purpose, except to the extent of their pecuniary interests therein.

5. Represents a pro rata distribution without additional consideration by NBCV to its partners.

6. The reported securities are owned directly by Novak Biddle Venture Partners V, L.P. ("NBVPV"). NBCV is the general partner of NBVPV and the Managing Members are the managing members of NBCV. Each of NBCV and the Managing Members disclaim beneficial ownership of all the shares owned by the NBVPV and this report shall not be deemed an admission that either is the beneficial owner of such shares for purposes of Section 16 or for any other purpose, except to the extent of their pecuniary interests therein.

7. Represents a pro rata distribution without additional consideration by NBVPV to its limited partners.

8. The reported securities are owned directly by Jack Biddle, Inc. ("JBI"). The Reporting Person is the president of JBI.

9. The reported securities are owned directly by Southgate Partner I ("SPI"), a family trust established for the benefit of the Reporting Person's child. The Reporting Person is the trustee of SPI.

10. The reported securities are owned directly by Southgate Partner II ("SPII"), a family trust established for the benefit of the Reporting Person's child. The Reporting Person is the trustee of SPII.

11. The reported securities are owned directly by Southgate Partners III ("SPIII"), a family trust established for the benefit of the Reporting Person's child. The Reporting Person is the trustee of SPIII.

Remarks:

	/s/ Lauren Ackermann, Attorney-in-Fact	03/16/2018
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
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