Raised $350M across disclosed rounds.[36][9][10]

Series B closed July 2015, led by Sequoia Capital.[36][2][4]

post-money valuation is not publicly disclosed.

Named investors include Andreessen Horowitz, Sequoia Capital, Thrive Capital, Institutional Venture Partners.[36][1][2][4]

Tom Preston-Werner, Co-founder, CTO then CEO (2008–2014)[1][8]

Chris Wanstrath, Co-founder, CEO (2014–2018)[1][8]

PJ Hyett, Co-founder[1][8]

Scott Chacon, Co-founder / Git evangelist[1][8]

Thomas Dohmke, CEO (Nov 2021 – Sep 2025; departed to found Entire)[9][11][10][27][28]

Jared Palmer, SVP, GitHub / VP of Product CoreAI, Microsoft (Oct 2025–present)[9][11][10][27][28]

Spencer Montalvo, Programs, Operations & Strategy, Office of the CEO (May 2024 – present)[9][11][10][27][28]

Alecia Moore, General Manager (current; no start date in source)[9][11][10][27][28]

Ryan Huang, SVP Engineering Aug 2019 – Jul 2023 (retired from GitHub Aug 2023)[9][11][10][27][28]

Replit · replit.com · Overlapping buyer and budget: both GitHub and Replit compete for developer tooling spend and AI-assisted coding adoption; Replit's agent-first, browser-native approach is a direct alternative workflow to GitHub Codespaces plus Copilot for the next generation...[12]

GitLab · gitlab.com · similar, not yet paired · Direct substitute: same buyer (enterprise engineering teams), same workflow (Git-based code hosting, pull/merge requests, CI/CD pipelines), same AI coding assistant category (Duo vs. Copilot), and explicitly listed as a GitHub competitor in the GitLab...[7]

Stack Overflow · stackoverflow.co · similar, not yet paired · Same developer buyer and overlapping AI-for-developers budget: Stack Overflow's enterprise knowledge product (Stack Internal) and its Overflow API compete with GitHub's Copilot knowledge-grounding and enterprise documentation workflows; Stack Overflow alumni...[5]

Entire · entire.io · similar, not yet paired · Direct strategic overlap: founded by GitHub's own departing CEO explicitly to build the next-generation developer platform, targeting the same professional developer buyer and the same human-agent coding workflow that GitHub Copilot and GitHub Actions...[14]

The customer proof is company-sourced only. No independent source in this ledger confirms it.[18]

Ask for one referenceable production customer.

Not a recommendation. The first thing this ledger cannot answer.

Filled in the side panel for invited readers. This card carries sourced facts only.