[Form 4] APPIAN CORP Insider Trading Activity

Rhea-AI Filing Summary

Albert G.W. Biddle III, a Director of Appian Corporation (APPN), reported a non‑derivative acquisition on 10/01/2025 of 1,022 shares of Class A common stock granted under the company's 2017 Equity Incentive Plan and Non‑Employee Director Compensation Policy. After the grant, the Form 4 shows the Reporting Person directly beneficially owns 32,500 Class A shares. The filing also discloses indirect holdings: three family trusts each holding 15,479 shares and Jack Biddle, Inc. holding 82,500 shares; the Reporting Person serves as trustee for the trusts and is president of JBI. The Form 4 was signed by an attorney‑in‑fact on 10/03/2025.

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

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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)

C/O APPIAN CORPORATION

7950 JONES BRANCH DRIVE

(Street)

MCLEAN VA 22102

(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		10% Owner
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
10/01/2025

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	10/01/2025		A(1)		1,022	A	$0	32,500	D
Class A Common Stock								15,479	I	See Footnote(2)
Class A Common Stock								15,479	I	See Footnote(3)
Class A Common Stock								15,479	I	See Footnote(4)
Class A Common Stock								82,500	I	See Footnote(5)

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

Explanation of Responses:

1. These shares were granted under the Issuer's 2017 Equity Incentive Plan pursuant to the Issuer's Non-Employee Director Compensation Policy, as amended and approved by the Board of Directors on December 18, 2020.

2. The reported securities are owned directly by a family trust established for the benefit of the Reporting Person's child ("Trust I"). The Reporting Person is the trustee of Trust I.

3. The reported securities are owned directly by a family trust established for the benefit of the Reporting Person's child ("Trust II"). The Reporting Person is the trustee of Trust II.

4. The reported securities are owned directly by a family trust established for the benefit of the Reporting Person's child ("Trust III"). The Reporting Person is the trustee of Trust III.

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

Remarks:

	/s/ Angela Patterson, Attorney-in-Fact	10/03/2025
	** 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).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What transaction did Appian director Albert Biddle (APPN) report on the Form 4?

The Form 4 reports a non‑derivative acquisition on 10/01/2025 of 1,022 Class A shares granted under the Issuer's 2017 Equity Incentive Plan.

How many shares does Albert Biddle directly own after the reported transaction?

Following the reported transaction the Form 4 shows 32,500 Class A shares beneficially owned directly by the Reporting Person.

Does the Form 4 disclose any indirect holdings for the reporting person?

Yes. The filing discloses three family trusts each owning 15,479 shares (Reporting Person is trustee) and Jack Biddle, Inc. owning 82,500 shares (Reporting Person is president).

Under what plan were the director shares granted?

The shares were granted under the Issuer's 2017 Equity Incentive Plan pursuant to the Non‑Employee Director Compensation Policy as amended and approved on December 18, 2020.

When was the Form 4 signed and by whom?

The filing bears a signature line showing /s/ Angela Patterson, Attorney‑in‑Fact dated 10/03/2025.