Efraim Ruthenberg is a Director at Koch, whose known portfolio counts 10 companies.
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Investment focus
- Stage
- GrowthLate-StageSeed
Contacts
Affiliated funds' portfolios
Director at Koch, whose known portfolio counts 10 companies
- Astranis
- Snyk
- Tradeshift
- HqO
- Plot
- SoundHound
- ESS
- Halo Investing
- Compass Minerals
- Nerdy
Investor Profile
Efraim Ruthenberg is listed against sectors Climate, FinTech, Hardware and SaaS, and focus areas 3D Printing, Aerospace, Battery and Cloud Infrastructure in the database.
Stage-wise, the deals at Koch cluster around Growth, Late-Stage and Seed rounds.
What the affiliated firm has backed is the closest available signal on whether Efraim Ruthenberg is worth approaching.
Colleagues at Koch
Tim Russell
CFO
Wichita, United States
Audrey Coad
Finance Director
Wichita, United States
Hal Mutlu
Director
United States
Gabrielle Yo
Director
Dallas, United States
Paul Balskus
Director
Scottsdale, United States
Austin Shanks
Investment Associate
Wichita, United States
Paxton Graham
Senior Associate, Investments
Wichita, United States
Chris Clavin
Managing Director
Wichita, United States
Benjamin Tuchalski
Director
Wichita, United States
Reagan Irvin
Investment Analyst
Manhattan, United States
Joshua Buffolino
Senior Investment Analyst
Wichita, United States
Frequently asked questions
Who is Efraim Ruthenberg?
Efraim Ruthenberg is a corporate venture investor and private equity investor based in Scottsdale, Arizona, United States, listed as Director at Koch. The known portfolio of that firm counts 10 companies. That portfolio belongs to the firm, not to Efraim Ruthenberg personally.
What does Efraim Ruthenberg invest in?
Listed sectors include Climate, FinTech, Hardware and SaaS; listed focus areas include 3D Printing, Aerospace, Battery and Cloud Infrastructure. Those tags come from the portfolios of the firms this profile is attached to, so they read as a record of what has been backed rather than a stated preference for what comes next.
What stage does Efraim Ruthenberg invest at?
Koch appears in Growth, Late-Stage and Seed rounds across its known deals, and Efraim Ruthenberg is listed there as Director. Stage is the strongest single filter when you build a target list: an investor with no record at your stage rarely starts with you.
Which firm is Efraim Ruthenberg listed at?
Efraim Ruthenberg is listed as Director at Koch. 11 other people in the database share a firm with Efraim Ruthenberg.
How do I contact Efraim Ruthenberg?
A LinkedIn page is on file for Efraim Ruthenberg. It is readable inside RaiseHunt after you create an account. The database holds no email address and no phone number for this profile.
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Data: RaiseHunt investor dataset · Snapshot 5 September 2026 · How this data is built · Report a correction or request removal