UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, DC 20549

SCHEDULE 14A

Proxy Statement Pursuant to Section 14(a) of the
Securities Exchange Act of 1934

(Amendment No.          )

Filed by the Registrant x

Filed by a Party other than the Registrant ¨

Check the appropriate box:

¨ Preliminary Proxy Statement

¨ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))

¨ Definitive Proxy Statement

x Definitive Additional Materials

¨ Soliciting Material under § 240.14a-12

Compass, 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):

x No fee required

¨ Fee paid previously with preliminary materials

¨ Fee computed on table in exhibit required by Item 25(b) per Exchange Act Rules 14a-6(i)(1) and 0-11

COMPASS, INC. Important Notice Regarding the Availability of Proxy Materials for the Annual Meeting of Stockholders to be held virtually on Thursday June 2, 2022 at 1:30 PM Eastern Time You are receiving this communication because you hold shares in the company named above. This is not a ballot. You cannot use this notice to vote these shares. This communication presents only an overview of the more complete proxy materials that are available to you on the Internet. We encourage you to access and review all of the important information contained in the proxy materials before voting. The Proxy Statement and Annual Report is available at http://www.viewproxy.com/Compass/2022. If you want to receive a paper or e-mail copy of these documents, you must request one. There is no charge to you for a copy. Please make your request for a copy as instructed below on or before May 24, 2022 to facilitate timely delivery. Important information regarding the Internet availability of the company’s proxy materials, instructions for accessing your proxy materials and voting online and instructions for requesting paper or e-mail copies of your proxy materials are provided on the reverse side of this Notice. STOCKHOLDERS ARE CORDIALLY INVITED TO ATTEND THE ANNUAL MEETING. To the Stockholders of Compass, Inc. The 2022 Annual Meeting of Stockholders of Compass, Inc. will be held virtually on June 2, 2022 at 1:30 p.m. EDT. As a Registered Holder, you may vote your shares at the Annual Meeting of Stockholders by first registering at http://www.viewproxy.com/Compass/2022 and then using your Virtual Control Number below. Your registration must be received by 11:59 PM EDT on May 30, 2022. On the day of the Annual Meeting of Stockholders, if you have properly registered, you will log in using the password you received via email in your registration confirmation and follow instructions to vote your shares. Please have your Virtual Control Number with you during the meeting in order to vote. Further instructions on how to attend and vote at the Annual Meeting of Stockholders are contained in the Proxy Statement in the section titled “IMPORTANT INFORMATION ABOUT ANNUAL MEETING”. You may also vote your shares electronically through the Internet or by telephone. Voting Items Proposal 1 – Election of Class I Directors Nominees: 1a. Robert Reffkin 1b. Frank Martell Proposal 2 – Ratification of the Appointment of PricewaterhouseCoopers LLP as Our Independent Public Accounting Firm for 2022. Proposal 3 – Advisory Vote to Approve 2021 Named Executive Officer Compensation (“Say-On-Pay Vote”). Proposal 4 – Advisory Vote to Approve the Frequency of Future Say-On-Pay Votes. THE BOARD OF DIRECTORS RECOMMENDS YOU VOTE FOR EACH OF THE NOMINEES NAMED IN PROPOSAL 1, FOR PROPOSALS 2 AND 3, AND ONE YEAR FOR PROPOSAL 4. INTERNET TELEPHONE E-MAIL The Securities and Exchange Commission rules permit us to make our proxy materials available to our stockholders via the Internet. Material for this Annual Meeting and future meetings may be requested by one of the following methods: To view your proxy materials online, go to http://www.viewproxy.com/Compass/2022 Have your 11 digit Virtual Control Number (located below) available when you access the website and follow the instructions. 877-777-2857 TOLL FREE requests@viewproxy.com * If requesting material by e-mail, please send a blank e-mail with the company name and your 11 digit Virtual Control Number (located below) in the subject line. No other requests, instructions or other inquiries should be included with your e-mail requesting material. You must use the 11 digit Virtual Control Number located in the box below. VIRTUAL CONTROL NO.

COMPASS, INC. PROXY MATERIALS AVAILABLE TO VIEW OR RECEIVE The following proxy materials are available for you to review at: http://www.viewproxy.com/Compass/2022 • 2022 Notice of Annual Meeting of Stockholders and Proxy Statement • 2021 Annual Report ACCESSING YOUR PROXY MATERIALS ONLINE Have this notice available when you request a paper copy of the proxy materials or to vote your proxy electronically. You must reference your Virtual Control Number to vote by Internet or request a paper copy of the proxy materials. You May Vote Your Proxy When You View The Material On The Internet. You Will Be Asked To Follow The Prompts To Vote Your Shares. Your electronic vote authorizes the named proxies to vote your shares in the same manner as if you marked, signed, dated and returned the proxy card. REQUESTING A PAPER COPY OF THE PROXY MATERIALS By telephone please call 1-877-777-2857 or By logging onto http://www.viewproxy.com/Compass/2022 or By email at: requests@viewproxy.com Please include the company name and your Virtual Control Number in the e-mail subject line.