6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549

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FORM 6-K

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Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 Under the Securities Exchange Act of 1934

For the Month of June 2025

Commission File No.: 001-41083

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TELESAT CORPORATION (Name of Registrant)

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160 Elgin Street, Suite 2100, Ottawa, Ontario, Canada K2P 2P7 (Address of Principal Executive Office)

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Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.

Form 20-F ☒            Form 40-F ☐

EXHIBITS

The following information is furnished to the Securities and Exchange Commission as part of this report on Form 6-K:

1

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

2

Exhibit 99.1

Telesat Announces Results of 2025 Annual General Meeting of Shareholders

OTTAWA, CANADA — June 19, 2025 — Telesat Corporation (Nasdaq and TSX: TSAT) (“Telesat” or the “Company”), one of the world’s largest and most innovative satellite operators, today announced the voting results from its annual general meeting of shareholders held on June 17th virtually via live audio webcast.

Shareholders of Telesat voted in favour of all items of business, including the appointment of Deloitte LLP Chartered Professional Accountants as auditors of the Company and the election of each of the director nominees as follows:

Final voting results on all matters voted on at the meeting will be filed on SEDAR+ at https://www.sedarplus.ca/ and on EDGAR at https://www.sec.gov/.

About Telesat

Backed by a legacy of engineering excellence, reliability and industry-leading customer service, Telesat (Nasdaq and TSX: TSAT) is one of the largest and most successful global satellite operators. Telesat works collaboratively with its customers to deliver critical connectivity solutions that tackle the world’s most complex communications challenges, providing powerful advantages that improve their operations and drive profitable growth.

Continuously innovating to meet the connectivity demands of the future, Telesat Lightspeed, the company’s Low Earth Orbit (“LEO”) satellite network, has been optimized to meet the rigorous requirements of telecom, government, maritime and aeronautical customers. Telesat Lightspeed will redefine global satellite connectivity with ubiquitous, affordable, high-capacity, secure and resilient links with fibre-like speeds. For updates on Telesat, follow us on LinkedIn, X, or visit https://www.telesat.com/.

Exhibit 99.2

ANNUAL GENERAL MEETING OF SHAREHOLDERS of TELESAT CORPORATION (the “Company”) June 17, 2025

REPORT OF VOTING RESULTS National Instrument 51-102 — Continuous Disclosure Obligations Section 11.3

Matters Voted Upon