Jan Koum
High Net Worth Investor
Santa Clara, California
Jan Koum, High Net Worth Investor is an active investor based in Santa Clara, California. This profile covers what Jan Koum backs, at which stage, and how founders can reach out in 2026.
Mr. Jan Koum is a high net worth investor based in Santa Clara, California. The Ukrainian-American internet entrepreneur and computer programmer is the co-founder of WhatApp and serves as its chief executive officer. He serves on the board of Facebook. Koum previously worked at Yahoo as a security and infrastructure engineer for nine years.
- Investor type
- Angel
- Stages
- Early Stage Venture
- Location
- Santa Clara, California
- Typical check
- $500K
- Past investments
- 1
Notable investments
NoomHow to reach Jan Koum
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Frequently Asked Questions
Who is Jan Koum?
Jan Koum is an active investor, High Net Worth Investor. Round Funded tracks their focus and activity alongside thousands of investors.
What stage does Jan Koum invest at?
Jan Koum typically invests at Early Stage Venture. Lead with traction that fits the stage when you reach out.
What is Jan Koum's typical check size?
Jan Koum typically writes checks around $500K. Use it as a signal for whether your raise fits their stage.
How do I contact Jan Koum?
Unlock Jan Koum's verified email on Round Funded Accelerator and send a personalized pitch. We surface only deliverable contacts so your outreach lands.