EchoStar CORP

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

Filed by the Registrant☒

Filed by a Party other than the Registrant☐

Check the appropriate box:

EchoStar Corporation

(Name of Registrant as Specified In Its Charter)

(Name of Person(s) Filing Proxy Statement, if other than the Registrant)

March 20, 2024

DEAR SHAREHOLDER:

It is my pleasure to invite you to attend the 2024 Annual Meeting of Shareholders (the “Annual Meeting”) of EchoStar Corporation (“EchoStar”). The Annual Meeting will be held on May 3, 2024, at 9:00 a.m., Mountain Time. The Annual Meeting will be conducted online via live audio webcast atwww.virtualshareholdermeeting.com/SATS2024. We are pleased to use the virtual meeting format to facilitate shareholder attendance, voting and questions by leveraging technology to communicate more effectively and efficiently with our shareholders. This format allows stockholders to participate fully from any location, without the cost of travel. You will be able to participate, submit questions and vote your shares electronically.

The enclosed Notice of the Annual Meeting and Proxy Statement describe the proposals to be considered and voted upon at the Annual Meeting. During the Annual Meeting, we will also review EchoStar’s operations and other items of general interest regarding the corporation.

All shareholders are invited to attend the Annual Meeting. Whether or not you plan to attend the Annual Meeting online, it is important that you be represented. To ensure that your vote is received and counted, please follow the instructions included with your proxy card to vote online, by mail or by telephone.

On behalf of the Board of Directors and senior management, I would like to express our appreciation for your support and interest in EchoStar.

CHARLES W. ERGEN

Chairman of the Board of Directors

NOTICE OF 2024 ANNUAL MEETING OF SHAREHOLDERS

TO THE SHAREHOLDERS OF ECHOSTAR CORPORATION:

The 2024 Annual Meeting of Shareholders (the “Annual Meeting”) of EchoStar Corporation will be held on May 3, 2024, at 9:00 a.m., Mountain Time, via the Internet through a virtual Web conference atwww.virtualshareholdermeeting.com/SATS2024. We are pleased to use the virtual meeting format to facilitate shareholder attendance, voting and questions by leveraging technology to communicate more effectively and efficiently with our shareholders. This format allows shareholders to participate fully from any location, without the cost of travel.

The Annual Meeting is being held for the following purposes:

You may vote on these matters in person or by proxy. Whether or not you plan to attend the Annual Meeting, we ask that you vote using one of the following methods to ensure that your shares will be represented at the meeting in accordance with your wishes:

Only shareholders of record at the close of business on March 6, 2024 are entitled to notice of, and to vote at, the Annual Meeting or any adjournment or postponement of the Annual Meeting. This Proxy Statement and proxy card were either made available to you on the Internet or mailed to you beginning on or about March 20, 2024.

By Order of the Board of Directors

DEAN A. MANSON

Chief Legal Officer and Secretary

March 20, 2024

Important Notice Regarding the Availability of Proxy Materials for the

Annual Meeting of Shareholders to be held May 3, 2024:

Our Annual Report, Proxy Statement and Notice of Internet Availability of

Proxy Materials are available atproxyvote.com.

9601 South Meridian Boulevard, Englewood, Colorado 80112 || Tel: (303) 723-1000 Fax: (303) 723-1999

PROXY STATEMENT

OF

ECHOSTAR CORPORATION

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