Philip Johnston (@PhilipJohnston) — Twitter Score 92 out of 1000

Philip Johnston is an entrepreneur who co-founded Starcloud, an orbital data-center company pursuing space-based computing and Bitcoin mining. Philip Johnston's Twitter Score is 92 out of 1000 (a Good rating) as of September 2026, ranking #8,077 (top 5%) among 486,860 tracked accounts.

Philip Johnston co-founded Starcloud and serves as its CEO, with the company aiming to build data centers in orbit. He also co-founded Opontia and previously worked at McKinsey & Company. Starcloud participated in Y Combinator's Summer 2024 batch and is affiliated with NVIDIA Inception.

Philip Johnston's company launched Starcloud-1 in November 2025 carrying an NVIDIA H100 GPU, after which the company reports having trained an AI model and run a version of Gemini in orbit. Looking ahead, Starcloud plans to fly a Bitcoin-mining computer aboard its Starcloud-2 mission, alongside multiple GPUs, an NVIDIA Blackwell chip, and an AWS server blade, with Johnston stating publicly that Starcloud intends to become the first company to mine Bitcoin in space.

Philip Johnston and Starcloud announced a $170 million Series A at a $1.1 billion valuation on March 30, 2026, per the company announcement, with the round led by Benchmark and EQT Ventures. Philip Johnston's account has 29,445 followers as of September 2026 and 8,088 posts. Philip Johnston has been mentioned by 51 accounts a total of 125 times.

Who follows Philip Johnston on X?

The accounts that follow Philip Johnston include 405 founders, 147 angel investors, 82 influencers and 7 VCs. Among them are Marc Andreessen, Meltem Demirors, Garry Tan, David Hoffman, Santiago R Santos and Raj.