Company: APPN
Filing Date: 2025-04-23
Form Type: DEF 14A
Source: 0001441683-25-000031
Chunk: 8

Company: APPIAN CORP
Filing Date: 2025-04-23
Form: DEF 14A
Chunk 8
---
 absence of your instruction.

What if I return a proxy card or otherwise vote but do not make specific choices?

If you return a signed and dated proxy card or otherwise vote without marking voting selections, your shares will be voted, as applicable, “For” the election of the nominees for director (Proposal No. 1), “For” the ratification of the appointment of BDO as independent registered public accounting firm of the Company for the year ending December 31, 2025 (Proposal No. 2), and “For” the advisory approval of named executive officer compensation (Proposal No. 3). If any other matter is properly presented at the meeting, your proxyholder (one of the individuals named on your proxy card) will vote your shares using his or her best judgment.

#### Who is paying for this proxy solicitation?
We will pay for the entire cost of soliciting proxies. In addition to these proxy materials, our directors and employees may also solicit proxies in person, by telephone, or by other means of communication. Directors and employees will not be paid any additional compensation for soliciting proxies. We may also reimburse brokerage firms, banks, and other agents for the cost of forwarding proxy materials to beneficial owners.

<div align='center'>4</div>

What does it mean if I receive more than one Notice?

If you receive more than one Notice, your shares may be registered in more than one name or in different accounts. Please follow the voting instructions on the Notices to ensure all of your shares are voted.

#### Can I change my vote after submitting my proxy?
Stockholder of Record: Shares Registered in Your Name

Yes. You can revoke your proxy at any time before the final vote at the Annual Meeting. If you are the record holder of your shares, you may revoke your proxy in any one of the following ways:

• You may submit another properly completed proxy card with a later date.

• You may grant a subsequent proxy by telephone or through the Internet.

• You may send a written notice that you are revoking your proxy to us at Appian Corporation, 7950 Jones Branch Drive, McLean, Virginia 22102, Attention: Secretary.

• You may attend the Annual Meeting and vote online. Simply attending the Annual Meeting will not, by itself, revoke your proxy.

Your most current proxy card or telephone or Internet proxy is the one that is counted.

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

If your shares are held by your broker or bank as a nominee or agent