Company: APPN
Filing Date: 2025-04-23
Form Type: DEF 14A
Source: 0001441683-25-000031
Chunk: 24

Company: APPIAN CORP
Filing Date: 2025-04-23
Form: DEF 14A
Chunk 24
---
 accompanied by the written consent of the proposed nominee to be named as a nominee and to serve as a director if elected.

STOCKHOLDER COMMUNICATIONS WITH THE BOARD OF DIRECTORS

The Company’s Board has adopted a formal process by which stockholders may communicate with the Board or any of its directors. Stockholders who wish to communicate with the Board or an individual director may do so by sending written communications addressed to the Board or to such director c/o Appian Corporation, 7950 Jones Branch Drive, McLean, Virginia 22102, Attention: Secretary. Written communications may be submitted anonymously or confidentially and may, at the discretion of the person submitting the communication, indicate whether the person is a stockholder or other interested party.

Each stockholder communication will be reviewed by the Company’s Secretary to determine whether it is appropriate for presentation to the Board or such director. The purpose of this screening is to allow the Board to avoid having to consider irrelevant or inappropriate communications (such as advertisements, solicitations, and hostile communications). The screening procedures have been approved by a majority of the independent directors. Communications determined by the Secretary to be appropriate for presentation to the Board or such director will be submitted to the Board or such director on a periodic basis. Communications determined by the Secretary to be inappropriate for presentation will still be made available to any non-management director upon such director’s request.

All communications made pursuant to the Company’s Accounting and Auditing Whistleblower Policy (the “Whistleblower Policy”) that relate to accounting or auditing matters involving the Company will be promptly and directly forwarded to the Audit Committee. Complaints covered by the Whistleblower Policy may be reported

<div align='center'>15</div>

directly to our General Counsel via e-mail sent to compliance@appian.com or directly to the members of the Audit Committee via e-mail sent to auditcommittee@appian.com.

#### CODE OF ETHICS
The Company has adopted a Code of Conduct that applies to all directors, executives, employees, and independent contractors of the Company and its subsidiaries. The Code of Conduct is available on the Company’s website at investors.appian.com. If the Company makes any substantive amendments to the Code of Conduct or grants any waiver from a provision of the Code of Conduct to any executive officer or director, the Company will promptly disclose the nature of the amendment or waiver on its website.

#### INSIDER TRADING POLICY
We have adopted an insider trading policythat prohibits speculative or short-term trading. Specifically, no employee, director, or consultant