Jeff Stump
Operating Partner at Andreessen Horowitz
San Jose, California
Jeff Stump, Operating Partner at Andreessen Horowitz is an active investor based in San Jose, California. This profile covers what Jeff Stump backs, at which stage, and how founders can reach out in 2026.
- Investor type
- VCPEFinance Operator
- Stages
- SeedEarly Stage VentureSeries ASeries BLate Stage Venture
- Invests in
- Crypto & Web3
- Location
- San Jose, California
- Typical check
- $1M
- Past investments
- 8
Notable investments
Reflexer Labs
Oasis Labs
Arweave
Celo
CryptoKitties
dYdXHow to reach Jeff Stump
Angels and operators like Jeff Stump reply to specific, personalized notes that show real traction, not mass blasts. Build a verified list, write a note that fits their thesis, and track replies, all on Round Funded.
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Round Funded. "Jeff Stump." Round Funded investor database, updated September 27, 2026.
Stable URL, it will not change: https://www.roundfunded.com/en/investor/jeff-stump
Frequently Asked Questions
What does Jeff Stump invest in?
Jeff Stump invests in Crypto & Web3, typically at Seed, Early Stage Venture, Series A and Series B. Match your sector and stage, then reach out with a personalized pitch.
What stage does Jeff Stump invest at?
Jeff Stump typically invests at Seed, Early Stage Venture, Series A and Series B. Lead with traction that fits the stage when you reach out.
What is Jeff Stump's typical check size?
Jeff Stump typically writes checks around $1M. Use it as a signal for whether your raise fits their stage.
How do founders reach investors like this?
Round Funded lists active investors with verified, professional contact details for signed-up founders. Filter by sector, stage and location, then send a personalized pitch from your own inbox.
What is Round Funded?
Round Funded is an investor database and outreach platform for startup founders. It lists 60,000+ active investors with verified contacts, filtered to recent investment activity, and lets founders send personalized pitches from their own Gmail, track replies, and share a free Data Room. Round+ starts at $99 per month with a 3-day trial.