<img src="https://ml.globenewswire.com/Resource/Download/4bbd6d1f-37e8-41d1-977f-5fb96868cee5?size=2" nborder="0" align="left" hspace="5" vspace="5" title="Telesat Registered Logo Navy533C_300dpi_1970px.png" alt="Telesat"/>Agreement provides a capital-efficient, scalable framework to expand the Telesat Lightspeed ground segment worldwidePARIS, Sept. 15, 2026 <a href="https://www.globenewswire.com" target="_blank">(GLOBE NEWSWIRE)</a> -- Telesat LEO ULC, a subsidiary of <a href="https://www.globenewswire.com/Tracker?data=FunrxZiQYvI6CNIBaMwqK4xkfNzZJAMVuWpd5F0NY-vpq8Tg5LHIQ8hyrrnYUl4tfAoXbax-GQf37j9S8lvWuUeIF-Nvb94ZYtV_GJIfwZs=" rel="nofollow" target="_blank" title="Telesat Corporation">Telesat Corporation</a> (Nasdaq and TSX: TSAT), one of the world’s largest and most innovative satellite operators, and <a href="https://www.globenewswire.com/Tracker?data=YAUCz5wd1Jn7AgcpySqHESxZwkFaObEm4cJ1g85N3bfC2V3232pXLe92ZZ1XT6W1Or48bkra_kFtkwyONMEmda7YlBdGzsUApYIBcbgJRQs=" rel="nofollow" target="_blank" title="SatPort Infrastructure">SatPort Infrastructure</a>, a leading carrier-neutral ground infrastructure platform provider backed by global investment firm EQT, announced today a global build-to-suit Master Services Agreement (MSA) to develop, build and host certain landing stations to support the Telesat Lightspeed constellation. Telesat Lightspeed is an advanced low Earth orbit (LEO) satellite network being designed to deliver secure, high-capacity, fiber-like broadband connectivity worldwide. Under the MSA, SatPort, which specializes in build-to-suit teleport and gateway solutions for LEO, MEO and GEO constellations, will deliver ground infrastructure that connects the Telesat Lightspeed constellation to the world’s terrestrial networks. The agreement gives Telesat a capital-efficient, rapidly scalable path to expand its ground segment worldwide, and establishes SatPort as a non-exclusive strategic partner for one of the most advanced enterprise- and defence-grade LEO networks. The MSA is a framework agreement for how SatPort can provide multiple landing stations across the globe that are built to Telesat’s design specs, converting ground-segment capital expenditure into predictable operating costs. SatPort’s build-to-suit model is designed to meet the sovereign and in-country data-landing requirements that increasingly govern satellite connectivity while ensuring Telesat retains ownership, control and operations of all network elements. “Telesat Lightspeed is exactly the kind of mission-critical network SatPort was built to serve. By delivering ground infrastructure to a common standard, anywhere in the world, Telesat achieves capital efficiency and a scalable framework for deploying ground infrastructure,” said Joe Spytek, Chief Executive Officer, SatPort Infrastructure. “This is a landmark moment for how ground segment will be built in the LEO era – multi-tenant, carrier-neutral, and capital-efficient. SatPort is singularly focused on delivering safe, reliable, and scalable ground infrastructure, so satellite operators can trust their mission-critical terrestrial expansions to dedicated experts and focus entirely on space.” “A globally distributed landing station network is essential to delivering the low-latency, secure connectivity our enterprise and government customers expect from Telesat Lightspeed,” said Asit Tandon, Telesat’s Chief Network and Information Officer. “SatPort's build-to-suit hosting model, backed by stringent service level commitments that are aligned with our resiliency requirements, gives us the agility to rapidly deploy new sites as needed to meet customer demand and address evolving regulatory or sovereignty requirements.” Guggenheim Securities acted as sole financial adviser to Telesat. Media Contacts: Alessandro Carani for SatPort Infrastructure <a href="https://www.globenewswire.com/Tracker?data=-qMwmjTA4oKLiuAUc7pTo_zlna6LitHPab2WiXBkODmwvBDe2V1zeaxgswGiKyqTmynf8cNhMnvFzL18-AOSJNyIvCsDlwd4SNCWrK67JI8=" rel="nofollow" target="_blank" title="contact@satport.com">contact@satport.com</a> Monique Scotti for Telesat <a href="https://www.globenewswire.com/Tracker?data=nuXZ7EBWqonMr5ruQ9yueVUhnnFo5Z5nTL0gtFbzl9rvcWh6PhvUoRiD-82K0tagzChOhyu0ktKIyBrYBUp_-A==" rel="nofollow" target="_blank" title="pr@telesat.com">pr@telesat.com</a> W2 communications for Telesat <a href="https://www.globenewswire.com/Tracker?data=FunrxZiQYvI6CNIBaMwqK4W51U5mHALoKYqsF-yuWwy7MqAX_W_NtATPza7sY1F8wA4a0DMp1Xqa5RQy2BeUBLmRN2zTtFDrDlSoI8AL9rc=" rel="nofollow" target="_blank" title="Telesat@w2comm.com">Telesat@w2comm.com</a> About SatPort Infrastructure: SatPort Infrastructure is the world’s leading carrier-neutral satellite ground infrastructure platform, purpose-built to support the next generation of satellite operators. Backed by long-term capital from global investment organization EQT Infrastructure, SatPort delivers build-to-suit teleport and gateway solutions for LEO, MEO, and GEO constellations. We combine deep operational expertise with the financial strength to fund, develop, and scale mission-critical infrastructure globally. Our model enables customers to lock in predictable operating costs across the full asset lifecycle, eliminating capital burden and operational complexity. Orbitally agnostic and globally distributed, SatPort provides secure, resilient, and strategically located infrastructure, allowing operators to focus on space while we power their ground networks. For more information visit satport.com. About Telesat: Telesat Corporation (Nasdaq and TSX: TSAT) (“Telesat”) is a global satellite operator and leader in advanced satellite communications, redefining broadband connectivity through its Telesat Lightspeed Low Earth Orbit (LEO) network. Designed from inception for interoperability with enterprise and government applications, Telesat Lightspeed delivers secure, resilient, high-performance broadband connectivity with fibre-like speeds. Its advanced, software-defined architecture operates in both commercial and military Ka-band spectrum, enabling mission-critical communications with enhanced security and protection against evolving threats. Purpose-built to meet the most demanding requirements, Telesat Lightspeed provides telecom, enterprise, aviation, maritime and defence customers with unprecedented flexibility and control to dynamically manage their own services and deliver differentiated, end-to-end connectivity solutions worldwide. With nearly 60 years of innovation, engineering excellence and a collaborative approach to customer success, Telesat is uniquely positioned to deliver secure, scalable and future-ready connectivity solutions that help customers solve their most complex communications challenges and achieve mission success. For updates on Telesat, follow us on <a href="https://www.globenewswire.com/Tracker?data=s2-Ye04hTJuZHNNhLcc4Si9Sw-xqRase0oYAXXVTFRX-3TElk_LkBPfr_dcw6UIyZsPa4-o0lsrqQWTSgERVVt9NI6BbS6naDzDM0UFt05tqLxUzm6umGbai_n79Stsl" rel="nofollow" target="_blank" title="LinkedIn">LinkedIn</a>, <a href="https://www.globenewswire.com/Tracker?data=R_UzzqDnYaj4kc-VanBUaLfJ18KEVcU5KSogzmZ8kQjPjTiUlK4ZMD3q65lzo1QiVmQzyQP0pZ6Necje6vMuYA==" rel="nofollow" target="_blank" title="X">X</a>, or visit <a href="https://www.globenewswire.com/Tracker?data=XpKg5_angKexhxLVv7Rd91u0ZB9dFg3-mx3tRSDJ7K34Ga6LtfqctrryFNFfCCQsmJ_jBvOIgfGJ36P13imZLc-7-QMd91rqZTUP0_ZeVME=" rel="nofollow" target="_blank" title="www.telesat.com">www.telesat.com</a>. Forward-Looking Statements Safe Harbor This news release contains statements that are not based on historical fact and are “forward-looking statements’’ and “forward looking information” within the meaning of the Private Securities Litigation Reform Act of 1995 and Canadian securities laws. When used herein, statements which are not historical in nature, or which contain the words “will,” “can,” “establishes,” or similar expressions, are forward-looking statements. In addition, Telesat or its representatives have made or may make forward-looking statements, provide forward looking information, orally or in writing, which may be included in, but are not limited to, various filings made from time to time with the U.S. Securities and Exchange Commission (“SEC”) and Canadian securities regulatory authorities, and news releases or oral statements made with the approval of an authorized executive officer of Telesat. All statements made in this news release are made only as of the date set forth at the beginning of this news release. Telesat undertakes no obligation to update the statements made in this news release whether as a result of new information, future events or otherwise, except as required by applicable law. These forward-looking statements and this forward-looking information are not guarantees of future performance, are based on Telesat’s current expectations, and are subject to a number of known and unknown risks, uncertainties, assumptions, and other factors, some of which are beyond Telesat’s control, are difficult to predict, and could cause actual results to differ materially from those expressed, forecasted or implied in the forward-looking statements and forward-looking information. Known risks, uncertainties, and assumptions include, but are not limited to: risks associated with financial factors, including swings in the global financial markets, access to capital to construct our LEO satellite constellation, the ability to refinance Telesat GEO Inc.’s debt, the outcome of litigation related to Telesat GEO Inc.’s debt and the 62% equity distribution, volatility of securities values in an industry sector where values may be influenced by economic and other factors beyond Telesat’s control, inflation, rising or prolonged elevated interest rates, fluctuations in foreign exchange rates, and tariffs; risks associated with operating satellites and providing satellite services, including satellite construction or launch delays, launch failures, in-orbit failures, impaired satellite performance or dependence on large customers; the ability to deploy successfully an advanced global LEO satellite constellation and the timing of any such deployment; Telesat’s ability to meet the conditions for advance of the loans under the funding agreements for the constellation; technological hurdles, including Telesat’s and Telesat’s contractors’ development and deployment of the new technologies required to complete the constellation in time to meet Telesat’s schedule, or at all; the availability of services and components from Telesat’s and Telesat’s contractors’ supply chains; competition, including with other LEO systems, deployed and yet to be deployed; risks associated with domestic and foreign government regulation, including government restrictions and regulations, access to sufficient orbital spectrum to be able to deliver services effectively and access to sufficient geographic markets in which to sell those services; Telesat’s ability to develop significant commercial and operational capabilities; and the ability to expand Telesat’s existing satellite utilization. The foregoing list of important factors is not exhaustive. Investors should review the other risk factors discussed in our filings, including Telesat Corporation’s Annual Report on Form 20-F, Quarterly Reports on Form 6-K, and other filings made with the SEC and the Canadian securities regulatory authorities at the System for Electronic Document Analysis and Retrieval+ (“SEDAR+”), which may be accessed on the SEC’s website at www.sec.gov and SEDAR+’s website at www.sedarplus.ca. <img alt="" src='https://ml.globenewswire.com/media/ZTBhMWMwYWMtOWJmNy00ZTI0LWFkMTEtNDM5MzM4MmE2ZjIxLTEyOTczNzctMjAyNi0wOS0xNS1lbg==/tiny/Telesat-GEO-Inc-.png' referrerpolicy='no-referrer-when-downgrade' />

Telesat and SatPort Infrastructure sign global build-to-suit agreement to expand Telesat Lightspeed ground network

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