Philip Johnston (@PhilipJohnston) — Twitter Score 96 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 96 out of 1000 (a Good rating) as of October 2026, ranking #7,727 (top 5%) among 498,348 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 30,520 followers as of October 2026 and 9,012 posts. Philip Johnston has been mentioned by 56 accounts a total of 139 times.

Who follows Philip Johnston on X?

The accounts that follow Philip Johnston include 419 founders, 150 angel investors, 83 influencers and 9 VCs. Among them are Marc Andreessen, Meltem Demirors, Garry Tan, David Hoffman, Santiago R Santos and Raj.