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Spok Holdings Inc is a provider of healthcare communications. The company delivers clinical communication and collaboration solutions to help protect the health, well-being, and safety of people in the United States and abroad, on a limited basis, in Europe, Canada, Australia, Asia, and the Middle East. The company develops, sells, and supports enterprise-wide systems principally for healthcare and other organizations needing to automate, centralize, and standardize their approach to clinical and critical communications. The company offers its services and products to three market segments: healthcare, government, and large enterprise, with a greater emphasis on the healthcare market segment. Geographically, the company generates the majority of its revenue from the United States.

Founded in 2002 and commonly known as SpaceX, the Space Exploration Technologies Corporation designs, manufactures, and operates a family of reusable rockets to launch various payloads into Earth orbit for government and commercial customers. Starting in 2019, the company began launching a constellation of its own communication satellites to provide mobile broadband and wireless services under the Starlink brand. In early 2026, the company acquired xAI from its founder, Elon Musk, which operates a large language artificial intelligence model named Grok, a gigawatt-scale data center called Colossus, and the social media network X.