EchoStar CORP

Where to Get Additional Information

As a reporting company, we are subject to the informational requirements of the Exchange Act and accordingly file our annual reports on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K, proxy statements and other information with the SEC. As an electronic filer, our public filings are maintained on the SEC’s Internet site that contains reports, proxy and information statements, and other information regarding issuers that file electronically with the SEC. The address of that website is http://www.sec.gov. In addition, our annual reports on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K and amendments to those reports filed or furnished pursuant to Section 13(a) or 15(d) of the Exchange Act may be accessed free of charge through our website as soon as reasonably practicable after we have electronically filed such material with, or furnished it to, the SEC. The address of that website is http://www.echostar.com

Cost of Proxy Solicitation

We will bear the cost of the solicitation of proxies on behalf of the Board of Directors. In addition to the use of the mail, proxies may be solicited by us personally, by telephone, or by similar means. None of our directors, officers, or employees will be specifically compensated for those activities. We do not expect to pay any compensation for the solicitation of proxies. However, we will reimburse brokerage firms, custodians, nominees, fiduciaries, and other persons holding our shares in their names, or in the names of nominees, at approved rates for their reasonable expenses in forwarding proxy materials to beneficial owners of securities held of record by them and obtaining their proxies.

Shareholder Communications

General. We provide an informal process for shareholders to send communications to our Board of Directors and its members. Shareholders who wish to contact the Board of Directors or any of its members may do so by writing to EchoStar Corporation, Attn: Board of Directors, 9601 South Meridian Boulevard, Englewood, Colorado 80112. At the direction of the Board of Directors, all mail received will be opened and screened for security purposes. Correspondence directed to an individual Board member is referred to that member. Correspondence not directed to a particular Board member is referred to Mr. Dean A. Manson, our Chief Legal Officer and Secretary. Mr. Manson’s office will forward applicable letters to the Board of Directors, unless the envelope specifies that it should be delivered to a specific director or employee.

*Submission of Shareholder Proposals and Director Nominations for the 2026 Annual Meeting.*Shareholders who intend to submit a proposal or director nomination for consideration for inclusion in our proxy materials for presentation at our 2026 Annual Meeting of shareholders (the “2026 Annual Meeting”) must submit the proposal or director nomination to us no later than November 21, 2025 (120 days prior to the anniversary of the mailing date of this Proxy Statement).

In accordance with our bylaws, for a proposal or director nomination not included in our proxy materials to be brought before the 2026 Annual Meeting, a shareholder’s notice of the proposal or director nomination that the shareholder wishes to present must be delivered to Mr. Dean A. Manson, our Chief Legal Officer and Secretary, at EchoStar Corporation, 9601 South Meridian Boulevard, Englewood, Colorado 80112 not less than 90 nor more than 120 days prior to the first anniversary of the 2025 Annual Meeting of Shareholders. Accordingly, based on the date of our 2025 Annual Meeting of Shareholders, any notice given pursuant to our bylaws and outside the process of Rule 14a-8 must be received no earlier than January 2, 2026, and no later than February 1, 2026. In addition, to comply with the universal proxy rules, stockholders who intend to solicit proxies in support of director nominees other than the Company’s nominees must provide notice that sets forth the information required by Rule 14a-19 under the Securities Exchange Act of 1934 no later than March 3, 2026. We reserve the right to reject, rule out of order or take other appropriate action with respect to any proposal or director nomination that does not comply with these and other applicable requirements.

By Order of the Board of Directors

DEAN A. MANSON

Chief Legal Officer and Secretary

Signature [PLEASE SIGN WITHIN BOX] Date Signature (Joint Owners) Date TO VOTE, MARK BLOCKS BELOW IN BLUE OR BLACK INK AS FOLLOWS: KEEP THIS PORTION FOR YOUR RECORDS DETACH AND RETURN THIS PORTION ONLY THIS PROXY CARD IS VALID ONLY WHEN SIGNED AND DATED. V64259-P27852-Z89554 ! ! ! 01) Kathleen Q. Abernathy 02) Hamid Akhavan 03) George R. Brokaw 04) Stephen J. Bye 05) James DeFranco 06) R. Stanton Dodge 07) Cantey M. Ergen 08) Charles W. Ergen 09) Lisa W. Hershman 10) Tom A. Ortolf 11) William D. Wade For All Withhold All For All Except For Against Abstain ! ! ! To withhold authority to vote for any individual nominee(s), mark "For All Except" and write the number(s) of the nominee(s) on the line below. ECHOSTAR CORPORATION 9601 SOUTH MERIDIAN BOULEVARD ENGLEWOOD, CO 80112 VOTE BY INTERNET Before The Meeting - Go to www.proxyvote.com or scan the QR Barcode above Use the Internet to transmit your voting instructions and for electronic delivery of information up until 11:59 p.m. Eastern Time the day before the cut-off date or meeting date. Have your proxy card in hand when you access the web site and follow the instructions to obtain your records and to create an electronic voting instruction form. During The Meeting - Go to www.virtualshareholdermeeting.com/SATS2025 You may attend the meeting via the Internet and vote during the meeting. Have the information that is printed in the box marked by the arrow available and follow the instructions. VOTE BY PHONE - 1-800-690-6903 Use any touch-tone telephone to transmit your voting instructions up until 11:59 p.m. Eastern Time the day before the cut-off date or meeting date. Have your proxy card in hand when you call and then follow the instructions. VOTE BY MAIL Mark, sign and date your proxy card and return it in the postage-paid envelope we have provided or return it to Vote Processing, c/o Broadridge, 51 Mercedes Way, Edgewood, NY 11717. 2. To ratify the appointment of KPMG LLP as EchoStar Corporation's independent registered public accounting firm for the fiscal year ending December 31, 2025. Please sign exactly as your name(s) appear(s) hereon. When signing as attorney, executor, administrator, or other fiduciary, please give full title as such. Joint owners should each sign personally. All holders must sign. If a corporation or partnership, please sign in full corporate or partnership name by authorized officer. ECHOSTAR CORPORATION 1. Election of Directors Nominees: The Board of Directors recommends you vote FOR the following: The Board of Directors recommends you vote FOR the following: SCAN TO VIEW MATERIALS & VOTEw

V64260-P27852-Z89554 Important Notice Regarding the Availability of Proxy Materials for the Annual Meeting: The Annual Report and Notice and Proxy Statement and form of proxy are available at www.proxyvote.com. ECHOSTAR CORPORATION PROXY SOLICITED ON BEHALF OF THE BOARD OF DIRECTORS The undersigned hereby appoints Charles W. Ergen and Dean A. Manson, each with the power to appoint his substitute, and hereby authorizes them to represent and to vote as designated on the reverse, all Class A Shares and Class B Shares of EchoStar Corporation held of record by the undersigned on March 11, 2025, at the Annual Meeting of Shareholders to be held on May 2, 2025, or any adjournment or postponement thereof. THIS PROXY WHEN PROPERLY EXECUTED WILL BE VOTED IN THE MANNER DIRECTED HEREIN BY THE UNDERSIGNED SHAREHOLDER. IF NO DIRECTION IS MADE THIS PROXY WILL BE VOTED (1) FOR THE ELECTION OF EACH OF THE ELEVEN DIRECTORS SET FORTH ON THE REVERSE SIDE, AND (2) FOR THE RATIFICATION OF THE APPOINTMENT OF KPMG LLP AS ECHOSTAR CORPORATION'S INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM FOR THE FISCAL YEAR ENDING DECEMBER 31, 2025. THIS PROXY CONFERS DISCRETIONARY AUTHORITY WITH RESPECT TO PROPOSALS NOT KNOWN OR DETERMINED AT THE TIME OF THE MAILING OF THE NOTICE OF ANNUAL MEETING OF SHAREHOLDERS TO THE UNDERSIGNED. PLEASE SIGN AND RETURN THIS PROXY IN THE ENCLOSED PRE-ADDRESSED ENVELOPE. THE TENDER OF A PROXY WILL NOT AFFECT YOUR RIGHT TO VOTE IN PERSON IF YOU ATTEND THE MEETING OR TO SUBMIT A LATER DATED REVOCATION OR AMENDMENT TO THIS PROXY ON ANY OF THE ISSUES SET FORTH ON THE REVERSE. Continued and to be signed on reverse side