Jeffrey Klenner
Venture Partner at Greatscale Ventures
San Diego, California
Jeffrey Klenner, Venture Partner at Greatscale Ventures is an active investor based in San Diego, California. This profile covers what Jeffrey Klenner backs, at which stage, and how founders can reach out in 2026.
- Investor type
- VCPEInvestment BankInvestor
- Stages
- Early Stage VentureSeed
- Invests in
- Artificial IntelligenceSaaS & EnterpriseHardware & Deep Tech
- Location
- San Diego, California
- Typical check
- $375K
- Past investments
- 6
Notable investments
YPOReachifyAIECS (Equus Compute Solutions)
SymantecBench Talent CloudFulcrum Workforce SolutionsHow to reach Jeffrey Klenner
Angels and operators like Jeffrey Klenner 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.
Reach active investors like this one
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. "Jeffrey Klenner." Round Funded investor database, updated September 9, 2026.
Stable URL, it will not change: https://www.roundfunded.com/en/investor/jeffrey-klenner
Frequently Asked Questions
What does Jeffrey Klenner invest in?
Jeffrey Klenner invests in Artificial Intelligence, SaaS & Enterprise and Hardware & Deep Tech, typically at Early Stage Venture and Seed. Match your sector and stage, then reach out with a personalized pitch.
What stage does Jeffrey Klenner invest at?
Jeffrey Klenner typically invests at Early Stage Venture and Seed. Lead with traction that fits the stage when you reach out.
What is Jeffrey Klenner's typical check size?
Jeffrey Klenner typically writes checks around $375K. 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.