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📍 San Francisco · Silicon ValleyFounded 2026

About

Oak & Sparrow Systems Enterprise, founded in 2026 in San Francisco, builds Gatekeeper, an on-premises AI governance layer that checks every AI input and action against deterministic rules mapped to HIPAA, FERPA, CCPA, COPPA, PCI and FINRA, blocks violations before data leaves the organization, and seals each decision in a tamper-evident hash-chained log for regulated sectors such as legal, insurance, healthcare, community banking and school systems.

Capital graph

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Oak & Sparrow Systems…Joshua JohoskyJoshua JohoskyNick SilvaNick Silva
CompanyInvestorFounders / teamCo-investment (thicker arc = more shared deals, ×N marks the count)Bigger circle = stronger signal (activity / coverage / interest) · ⛶ fullscreen · scroll / pinch to zoom · hover to highlight · drag nodes · click a node to open its profile

Founders / core team

Joshua Johosky创始人Nick Silva高管

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Investors that may fit

Accel

22 Security & Compliance deals in the last 24 months · 17 in 硅谷

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Y Combinator

22 Security & Compliance deals in the last 24 months · 20 in 硅谷

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Andreessen Horowitz

18 Security & Compliance deals in the last 24 months · 16 in 硅谷

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Cyberstarts

18 Security & Compliance deals in the last 24 months · 14 in 硅谷

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Bain Capital Ventures

14 Security & Compliance deals in the last 24 months · 11 in 硅谷

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Greylock Partners

14 Security & Compliance deals in the last 24 months · 12 in 硅谷

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Ranked by each firm’s deals in this sector over the last 24 months, weighted by nearby stage and shared geography. Indicative only — no rating judgment.

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