Philip Johnston (entrepreneur)

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Philip Johnston (born December 18, 1986) is an entrepreneur and business executive. He is co-founder and CEO of Starcloud, a space technology company developing orbital data centers. In November, 2025, Starcloud launched a satellite with the first NVIDIA H100, which it used to train the first AI model in space. In March 2026, Starcloud became the fastest unicorn in Y Combinator history, hitting a $1.1bn valuation just 17 months after completing the program. In August 2026, Starcloud raised an additional $250M at a $2.3Bn valuation, with NVIDIA, Cisco, and Benchmark investing in the round. Johnston is also the co-founder and CEO of The Fermi Explorer Mission, a non profit that will send the first spacecraft to another star, and previously co-founded Opontia, a digital brand aggregator.

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