Sid Sijbrandij
Angel Investor
Co-founder and Executive Chair of GitLab; General Partner at Open Core Ventures, backing open-source software companies by recruiting founders and funding them from day one.
1+ investments · 1 portfolio companies
Pre-Seed
Seed
Developer Tools
Open Source
- Website
- opencoreventures.com
- Portfolio Company
- 1
- Total Investment
- 1
- Last Investment
- Jun 2025
Investment Thesis
Backs open-core software companies built around open source projects with traction; OCV recruits founding teams, pays market-rate salaries from day one, and funds each company $2M until they raise an external seed round.
Sid Sijbrandij is an Angel Investor. It has made 1 investment, including Fleet. Focus areas include Developer Tools and Open Source.
Portfolio1
Co-investors10
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10 co-investors across 10 shared portfolio companies — who they back alongside, and how often they lead.
Venture Capital ×10 · 4 shared rounds
Investment History
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