Appian : 2025 Proxy Statement

APPN

APPIAN CORPORATION

7950 Jones Branch Drive McLean, Virginia 22102

NOTICE OF ANNUAL MEETING OF STOCKHOLDERS

To Be Held on June 4, 2025

Dear Stockholder:

You are cordially invited to attend the 2025 Annual Meeting of Stockholders, or Annual Meeting, of APPIAN CORPORATION, a Delaware corporation (the "Company"). The Annual Meeting will be held on Wednesday, June 4, 2025, at 11:00 a.m. Eastern Time. The Annual Meeting will be a virtual stockholder meeting through which you can listen to the meeting, submit questions, and vote online. You will not be able to attend the meeting in person. The Annual Meeting can be accessed by visiting https://www.virtualshareholdermeeting.com/APPN2025 and entering your 16-digit control number (included on the Notice Regarding the Availability of Proxy Materials mailed to you). The purpose of the Annual Meeting will be the following:

To elect the nine (9) nominees for director named herein to serve until the 2026 Annual Meeting of Stockholders and until their successors have been duly elected and qualified.

To ratify the selection by the Audit Committee of the Board of Directors of BDO USA, P.C. as the independent registered public accounting firm of the Company for its fiscal year ending December 31, 2025.

To approve, on an advisory basis, the compensation of the Company's named executive officers as disclosed in the Proxy Statement.

To conduct any other business properly brought before the Annual Meeting.

These items of business are more fully described in the Proxy Statement accompanying this Notice.

The record date for the Annual Meeting is April 8, 2025. Only stockholders of record at the close of business on that date may vote at the Annual Meeting or any adjournment thereof. For the ten days prior to the Annual Meeting, a list of stockholders entitled to vote at the Annual Meeting will be available for examination by any stockholder of record for purposes germane to the Annual Meeting at our corporate headquarters during regular business hours. In addition, during the Annual Meeting, that list of stockholders will be available for examination by any stockholder of record at https://www.virtualshareholdermeeting.com/APPN2025.

By Order of the Board of Directors,

Christopher Winters

General Counsel and Secretary

McLean, Virginia April 23, 2025

We are primarily providing access to our proxy materials over the Internet pursuant to the Securities and Exchange Commission's notice and access rules. On or about April 23, 2025, we expect to mail to our stockholders of record as of April 8, 2025, a Notice of Internet Availability of Proxy Materials that will indicate how to access our 2025 Proxy Statement and 2024 Annual Report on the Internet and will include instructions on how you can receive a paper copy of the Annual Meeting materials, including the notice of annual meeting, proxy statement, and proxy card.

Whether or not you expect to attend the virtual Annual Meeting, please submit voting instructions for your shares promptly using the directions on your Notice, or, if you elected to receive printed proxy materials by mail, your proxy card, to vote by one of the following methods: (1) over the Internet before the Annual Meeting at https://www.proxyvote.com and during the Annual Meeting at https://www.virtualshareholdermeeting.com/APPN2025, (2) by telephone by calling the toll-free number 1-800-690-6903, or (3) if you elected to receive printed proxy materials by mail, by marking, dating, and signing your proxy card and returning it in the accompanying postage-paid envelope. Even if you have voted by proxy, you may still vote online if you attend the virtual Annual Meeting. Please note, however, that if your shares are held of record by a broker, bank, or other nominee and you wish to vote online at the Annual Meeting, you must obtain a proxy issued in your name from that record holder.

TABLE OF CONTENTS

Proposal No. 1 - Election of Directors 7

Information Regarding the Board of Directors and Corporate Governance 10

Independence of the Board of Directors 10

Board Leadership Structure 10

Role of the Board in Risk Oversight 11

Meetings of the Board of Directors 11

Information Regarding Committees of the Board of Directors 11

Stockholder Communications with the Board of Directors 15

Code of Ethics 16

Insider Trading Policy 16

Proposal No. 2 - Ratification of Selection of Independent Registered Public Accounting Firm 17

Proposal No. 3 - Advisory Vote on Named Executive Officer Compensation 18

Executive Officers 19

Security Ownership of Certain Beneficial Owners and Management 20

Executive and Director Compensation 22

Compensation Discussion and Analysis 22

Summary Compensation Table 28

Grants of Plan-Based Awards in 2024 29

Outstanding Equity Awards at December 31, 2024 30

Option Exercises and Stock Vested in 2024 31

Employment Agreements 31

Equity Plan Terms 32

Summary of Estimated Amounts Payable Upon a Termination or Change in Control 32

CEO Pay Ratio 33

Pay Versus Performance 33

Director Compensation 36

Securities Authorized for Issuance Under Equity Compensation Plans 38

Limitations on Liability and Indemnification Matters 38

Transactions with Related Persons 39

Related Person Transactions Policy and Procedures 39

Certain Related Person Transactions 39

Householding of Proxy Materials 41

Other Matters 41

Appendix A - Non-GAAP Reconciliation 42

Pursuant to rules adopted by the Securities and Exchange Commission (the "SEC"), we have elected to provide access to our proxy materials over the Internet. Accordingly, we have sent you a Notice of Internet Availability of Proxy Materials (the "Notice") because the Board of Directors (the "Board") of Appian Corporation (sometimes referred to as the "Company," "Appian," "we," "us," or "our") is soliciting your proxy to vote at the 2025 Annual Meeting of Stockholders (the "Annual Meeting"), including at any adjournments or postponements of the Annual Meeting. All stockholders will have the ability to access the proxy materials on the website referred to in the Notice or request to receive a printed set of the proxy materials. Instructions on how to access the proxy materials over the Internet or to request a printed copy may be found in the Notice.

We intend to mail the Notice on or about April 23, 2025 to all stockholders of record entitled to vote at the Annual Meeting.

The Annual Meeting will be held on Wednesday, June 4, 2025, at 11:00 a.m. Eastern Time. The Annual Meeting will be a virtual stockholder meeting through which you can listen to the meeting, submit questions, and vote online. The Annual Meeting can be accessed by visiting https://www.virtualshareholdermeeting.com/APPN2025 and entering your 16-digit control number which is included in the Notice that will be mailed to you. We recommend you log in a few minutes before the Annual Meeting on June 4, 2025 to ensure you are logged in when the meeting starts. Online check-in will begin at 10:55 a.m. Eastern Time.

We have decided to hold a virtual meeting because it improves stockholder access, encourages greater global participation, lowers costs compared to an in-person event, and aligns with our broader sustainability goals. Stockholders attending the virtual meeting will be afforded the same rights and opportunities to participate as they would at an in-person meeting.

Information on how to vote online during the Annual Meeting is discussed below.

Only stockholders of record as of the record date for the Annual Meeting and their proxy holders may submit questions or comments.

If you would like to submit a question, you may do so by joining the virtual Annual Meeting at https://www.virtualshareholdermeeting.com/APPN2025 and typing your question in the box in the Annual Meeting portal.

To help ensure we have a productive and efficient meeting and in fairness to all stockholders in attendance, you will also find posted our rules of conduct for the Annual Meeting when you log in prior to its start. In accordance with the rules of conduct, we ask you limit your remarks to one brief question or comment that is relevant to the Annual Meeting or our business and that remarks are respectful of your fellow stockholders and meeting participants. Questions may be grouped by topic by our management with a representative question read aloud and answered. In addition, questions may be ruled as out of order if they are, among other things, irrelevant to our business, related to pending or threatened litigation, disorderly, repetitious of statements already made, or in furtherance of the speaker's own personal, political, or business interests. Questions will be addressed in the Q&A portion of the Annual Meeting.

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If you encounter any difficulties accessing the virtual Annual Meeting during the check-in or meeting time, please call the technical support number that will be posted on the Virtual Stockholder Meeting log-in page. Technical support will be available starting at 10:30 a.m. Eastern Time on June 4, 2025.

Only stockholders of record of our Class A common stock and Class B common stock at the close of business on April 8, 2025, will be entitled to vote at the Annual Meeting. On this record date, there were 43,137,706 shares of Class A common stock outstanding and entitled to vote and 31,088,085 shares of Class B common stock outstanding and entitled to vote. Holders of our Class A common stock are entitled to one vote for each share held as of the above record date. Holders of our Class B common stock are entitled to ten votes for each share held as of the above record date. Holders of our Class A and Class B common stock will vote together as a single class on all matters described in this proxy statement.

A quorum of stockholders is necessary to hold a valid meeting. A quorum will be present if stockholders holding at least a majority of the voting power of the outstanding shares of our Class A common stock and Class B common stock (voting together as a single class) entitled to vote are present at the meeting or represented by proxy. Your shares will be counted towards the quorum only if you submit a valid proxy (or one is submitted on your behalf by your broker, bank, or other nominee) or if you vote at the Annual Meeting. Abstentions and broker non-votes will be counted towards the quorum requirement. If there is no quorum, the chairperson of the meeting or the holders of a majority of the voting power of shares present at the Annual Meeting or represented by proxy may adjourn the Annual Meeting to another date.

Stockholder of Record: Shares Registered in Your Name

If on April 8, 2025 your shares were registered directly in your name with our transfer agent, Computershare Trust Company, N.A., then you are a stockholder of record. As a stockholder of record, you may vote online at the Annual Meeting or vote by proxy. Whether or not you plan to participate in the Annual Meeting, we urge you to vote by proxy over the Internet, by telephone, or by mail as instructed below to ensure your vote is counted.

Beneficial Owner: Shares Registered in the Name of a Broker or Bank

If on April 8, 2025 your shares were held not in your name but rather in an account at a brokerage firm, bank, dealer, or other similar organization, then you are the beneficial owner of shares held in "street name", and the Notice is being forwarded to you by that organization. The organization holding your shares is considered to be the stockholder of record for purposes of voting at the Annual Meeting. As a beneficial owner, you have the right to direct your broker or other agent regarding how to vote the shares in your account. You are also invited to attend the Annual Meeting. However, since you are not the stockholder of record, you may not vote your shares at the Annual Meeting unless you request and obtain a valid proxy from your broker or other agent.

For the ten days prior to the Annual Meeting, a list of stockholders entitled to vote at the Annual Meeting will be available for examination by any stockholder of record for purposes germane to the Annual Meeting at our corporate headquarters during regular business hours. To access the list of record stockholders beginning ten days prior to the Annual Meeting and until the meeting, stockholders can schedule an appointment by contacting the Corporate Secretary at (703) 442-8844. In addition, during the Annual Meeting, that list of stockholders will be available for examination by any stockholder of record at https://www.virtualshareholdermeeting.com/APPN2025.

There are three matters scheduled for a vote:

Proposal No. 1: Election of nine directors;

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Disclaimer

Appian Corporation published this content on April 29, 2025, and is solely responsible for the information contained herein. Distributed via Public Technologies (PUBT), unedited and unaltered, on April 29, 2025 at 17:30 UTC.