Jamie Rapperport

Active Investor

General Partner at J4.Ventures

Palo Alto, California

LinkedIn

Jamie Rapperport, General Partner at J4.Ventures is an active investor based in Palo Alto, California. This profile covers what Jamie Rapperport backs, at which stage, and how founders can reach out in 2026.

Jamie Rapperport is a General Partner at J4.Ventures.

Jamie Rapperport invests in SaaS & Enterprise, Fintech and Artificial Intelligence, typically at Seed, Series A and Early Stage Venture.

Location
Palo Alto, California
Typical check
$500K

What does Jamie Rapperport invest in?

Investor type
VC
Stages
SeedSeries AEarly Stage Venture

Where is Jamie Rapperport based?

Jamie Rapperport is based in Palo Alto, California.

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How to reach Jamie Rapperport

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About this profile

This profile is part of Round Funded, an investor database and outreach platform for founders. It covers 60,000+ active VCs, angels, family offices and accelerators with verified contacts, lets you send pitches from your own Gmail, and includes a free Data Room for your raise. How this data is built.

Cite this page

Round Funded. "Jamie Rapperport." Round Funded investor database, updated September 23, 2026.

Stable URL, it will not change: https://www.roundfunded.com/en/investor/jamie-rapperport

Frequently Asked Questions

Who is Jamie Rapperport?

Jamie Rapperport, General Partner at J4.Ventures is an active investor based in Palo Alto, California. Jamie Rapperport invests in SaaS & Enterprise, Fintech and Artificial Intelligence, typically at Seed, Series A and Early Stage Venture.

What does Jamie Rapperport invest in?

Jamie Rapperport invests in SaaS & Enterprise, Fintech and Artificial Intelligence, typically at Seed, Series A and Early Stage Venture. Match your sector and stage, then reach out with a personalized pitch.

What stage does Jamie Rapperport invest at?

Jamie Rapperport typically invests at Seed, Series A and Early Stage Venture. Lead with traction that fits the stage when you reach out.

What is Jamie Rapperport's typical check size?

Jamie Rapperport typically writes checks around $500K. Use it as a signal for whether your raise fits their stage.

Where is Jamie Rapperport based?

Jamie Rapperport is based in Palo Alto, California.

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.

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