William Jeffrey
Founder and General Partner at Airstream Venture Partners
San Francisco, California
William Jeffrey, Founder and General Partner at Airstream Venture Partners is an active investor based in San Francisco, California. This profile covers what William Jeffrey backs, at which stage, and how founders can reach out in 2026.
- Investor type
- VCPEInvestor
- Stages
- Seed
- Invests in
- SaaS & EnterpriseDeveloper Tools & DataIoT & Connected Devices
- Location
- San Francisco, California
- Typical check
- $250K
- Past investments
- 6
Notable investments
How to reach William Jeffrey
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Frequently Asked Questions
What does William Jeffrey invest in?
William Jeffrey invests in SaaS & Enterprise, Developer Tools & Data and IoT & Connected Devices, typically at Seed. Match your sector and stage, then reach out with a personalized pitch.
What stage does William Jeffrey invest at?
William Jeffrey typically invests at Seed. Lead with traction that fits the stage when you reach out.
What is William Jeffrey's typical check size?
William Jeffrey typically writes checks around $250K. Use it as a signal for whether your raise fits their stage.
How do I contact William Jeffrey?
Unlock William Jeffrey's verified email on Round Funded Accelerator and send a personalized pitch. We surface only deliverable contacts so your outreach lands.