CS Disco, Inc.

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 14A

Proxy Statement Pursuant to Section 14(a) of

the Securities Exchange Act of 1934

(Amendment No. )

Filed by the Registrant☒

Filed by a Party other than the Registrant☐

Check the appropriate box:

CS DISCO, INC.

(Name of Registrant as Specified In Its Charter)

(Name of Person(s) Filing Proxy Statement, if Other Than the Registrant)

Payment of Filing Fee (Check all boxes that apply):

CS DISCO, INC.

111 Congress Avenue, Suite 900

Austin, Texas 78701

NOTICE OF ANNUAL MEETING OF STOCKHOLDERS

To Be Held on June 10, 2026

Dear Stockholder:

You are cordially invited to attend the Annual Meeting of Stockholders of CS Disco, Inc., a Delaware corporation (the “Company”). The Annual Meeting will be held virtually, via live webcast available via registration atweb.viewproxy.com/law/2026, on Wednesday, June 10, 2026 at 9:00 a.m., Central Time. We encourage you to attend online and participate. In order to attend, you must register in advance atweb.viewproxy.com/law/2026 prior to the deadline of June 9, 2026 at 5:00 p.m., Central Time. We recommend that you log in a few minutes before 9:00 a.m., Central Time, on June 10, 2026 to ensure you are logged in when the Annual Meeting starts.

The Annual Meeting will be held for the following purposes:

1. To elect our two nominees for Class II director, James Offerdahl and Toby Williams, each to hold office until our Annual Meeting of Stockholders in 2029 and until the director's successor has been duly elected and qualified or until the director's earlier death, resignation, or removal.

2. To ratify the selection by the audit committee of our board of directors of Ernst & Young LLP as our independent registered public accounting firm for the fiscal year ending December 31, 2026.

3. 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.

You will be able to attend the Annual Meeting, submit questions and vote during the live webcast by visitingweb.viewproxy.com/law/2026 and registering prior to the deadline of 5:00 p.m., Central Time, on June 9, 2026 and entering the control number included in your Notice of Internet Availability, voting instruction form, or in the instructions that you received via email. Upon completing your registration, you will receive further instructions via email, including your unique links that will allow you access to the Annual Meeting and will permit you to submit questions. Please refer to the additional logistical details and recommendations in the accompanying proxy statement.

The record date for the Annual Meeting is April 15, 2026. Only stockholders of record at the close of business on that date may vote at the Annual Meeting or any adjournment thereof. A list of stockholders entitled to vote at the Annual Meeting will be available for examination for ten days before the Annual Meeting by emailing us atproxy@csdisco.com.

By Order of the Board of Directors

Susan Garcia

Executive Vice President, General Counsel and Chief Compliance Officer

Austin, Texas

April 30, 2026

You are cordially invited to attend the Annual Meeting. Whether or not you expect to attend the Annual Meeting, PLEASE VOTE YOUR SHARES. As an alternative to voting online during the Annual Meeting, you may vote your shares in advance of the Annual Meeting through the internet, by telephone or, if you receive a paper proxy card in the mail, by mailing the completed proxy card. Voting instructions are provided in the Notice of Internet Availability of Proxy Materials or, if you receive a paper proxy card by mail, the instructions are printed on your proxy card.Even if you have voted by proxy, you may still vote online if you attend the Annual Meeting. Please note, however, that if your shares are held of record by a broker, bank or other agent and you wish to vote at the Annual Meeting, you must follow the instructions from such organization and will need to obtain a proxy issued in your name from that record holder.

TABLE OF CONTENTS

CS Disco, Inc.

111 Congress Avenue, Suite 900

Austin, Texas 78701

PROXY STATEMENT

FOR THE 2026 ANNUAL MEETING OF STOCKHOLDERS

To Be Held on June 10, 2026

Our board of directors is soliciting your proxy to vote at the 2026 Annual Meeting of Stockholders (the “Annual Meeting”) of CS Disco, Inc., a Delaware corporation, to be held virtually, via live webcast, available via registration atweb.viewproxy.com/law/2026, on Wednesday, June 10, 2026 at 9:00 a.m., Central Time, and any adjournment or postponement thereof. We believe hosting a virtual meeting enables participation by more of our stockholders, while lowering the cost of conducting the Annual Meeting. Stockholders attending the virtual meeting will be afforded the same rights and opportunities to participate as they would at an in-person meeting.

For the Annual Meeting, we have elected to furnish our proxy materials, including this proxy statement and our Annual Report on Form 10-K for the fiscal year ended December 31, 2025 (the “Annual Report”), to our stockholders primarily via the internet. On or about April 30, 2026, we expect to mail to our stockholders a Notice of Internet Availability of Proxy Materials (the “Notice”) that contains notice of the Annual Meeting and instructions on how to access our proxy materials on the internet, how to vote at the Annual Meeting, and how to request printed copies of the proxy materials. Stockholders may request to receive all future materials in printed form by mail or by email by following the instructions contained in the Notice. A stockholder’s election to receive proxy materials by mail or email will remain in effect until revoked. We encourage stockholders to take advantage of the availability of the proxy materials on the internet to help reduce the environmental impact and cost of our Annual Meeting.

Only stockholders of record at the close of business on April 15, 2026 (the “Record Date”) will be entitled to vote at the Annual Meeting. On the Record Date, there were 64,134,406 shares of common stock outstanding and entitled to vote. A list of stockholders entitled to vote at the Annual Meeting will be available for examination for ten days before the Annual Meeting by emailing us atproxy@csdisco.com. Please see the instructions on how to attend the Annual Meeting atweb.viewproxy.com/law/2026 and on page 2 of this proxy statement.

In this proxy statement, we refer to CS Disco, Inc. as “CS Disco,” “DISCO,” “we” or “us” and the board of directors of CS Disco as “our board of directors” or the “board.” The Annual Report, which contains consolidated financial statements as of and for the fiscal year ended December 31, 2025, accompanies this proxy statement. You also may obtain a copy of the Annual Report without charge by emailing proxy@csdisco.com.