Important Notice Regarding the Availability of Proxy Materials for the
Stockholder Meeting to Be Held on June 4, 2020.

SIRIUS XM HOLDINGS INC.

1221 AVENUE OF THE AMERICAS, 35TH FLOOR

NEW YORK, NY 10020

Meeting Information

Meeting Type:	Annual Meeting
For holders as of:	April 9, 2020
Date: June 4, 2020	Time: 8:30 AM EDT

Location:	Meeting live via the Internet-please visit
	www.virtualshareholdermeeting.com/SIRI2020.

The company will be hosting the meeting live via the Internet this year. To attend the meeting via the Internet please visit www.virtualshareholdermeeting.com/SIRI2020 and be sure to have the information that is printed in the box marked by the arrow (located on the following page).

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. You may view the proxy materials online at www.proxyvote.com or easily request a paper copy (see reverse side).

We encourage you to access and review all of the important information contained in the proxy materials before voting.

Our Board has fixed the close of business on April 9, 2020 as the record date for the determination of stockholders entitled to notice of and to vote at the meeting and any adjournments or postponements thereof. A list of these stockholders will be made available to stockholders during the meeting at www.virtualshareholdermeeting.com/SIRI2020

See the reverse side of this notice to obtain proxy materials and voting instructions.

—— Before You Vote ——

How to Access the Proxy Materials

Proxy Materials Available to VIEW or RECEIVE:

NOTICE AND PROXY STATEMENT AND ANNUAL REPORT

How to View Online:

Have the information that is printed in the box marked by the arrow (located on the following page) and visit: www.proxyvote.com.

How to Request and Receive a PAPER or E-MAIL Copy:

If you want to receive a paper or e-mail copy of these documents, you must request one. There is NO charge for requesting a copy. Please choose one of the following methods to make your request:

	1) BY INTERNET:	www.proxyvote.com
	2) BY TELEPHONE:	1-800-579-1639
	3) BY E-MAIL*:	sendmaterial@proxyvote.com

* If requesting materials by e-mail, please send a blank e-mail with the information that is printed in the box marked by the arrow (located on the following page) in the subject line.

Requests, instructions and other inquiries sent to this e-mail address will NOT be forwarded to your investment advisor. Please make the request as instructed above on or before May 21, 2020 to facilitate timely delivery.

—— How To Vote ——

Please Choose One of the Following Voting Methods

Vote By Internet:

Before The Meeting:

Go to www.proxyvote.com. Have the information that is printed in the box marked by the arrow (located on the following page) available and follow the instructions.

During The Meeting:

Go to www.virtualshareholdermeeting.com/SIRI2020. Have the information that is printed in the box marked by the arrow (located on the following page) available and follow the instructions.

Vote By Mail: You can vote by mail by requesting a paper copy of the materials, which will include a proxy card.

Voting Items

The Board of Directors recommends you vote FOR
the following:

1.	Election of Directors

	Nominees:

	01)	Joan L. Amble	08)	James E. Meyer
	02)	George W. Bodenheimer	09)	James F. Mooney
	03)	Mark D. Carleton	10)	Michael Rapino
	04)	Eddy W. Hartenstein	11)	Kristina M. Salen
	05)	James P. Holden	12)	Carl E. Vogel
	06)	Gregory B. Maffei	13)	David M. Zaslav
	07)	Evan D. Malone

The Board of Directors recommends you vote FOR the following proposals:

2.	Advisory vote to approve the named executive officers’ compensation.

3.	Ratification of the appointment of KPMG LLP as our independent registered public accountants for 2020.

NOTE: Such other business as may properly come before the meeting or any adjournment thereof.


¨		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 Pursuant to §240.14a-12


x	No fee required.

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