Sonoma
Ventures

Our family investing and advisory vehicle — backing exceptional early-stage founders in cybersecurity, data infrastructure, AI/ML, and B2B fintech.

CybersecurityData InfrastructureAI / MLB2B Fintech
56
Investments
5
Exits

Co-invested alongside

AccelNEALightspeedRedpointNorwestBattery VenturesInsight PartnersCoatueCanaanAcrew CapitalTLV PartnersViola+ more

Aim Security
Aim SecurityExit
Alterya
AlteryaExit
Dig Security
Dig SecurityExit
GTE.xyz
GTE.xyzExit
Tres Finance
Tres FinanceExit
Guidde
Guidde
Nimble Data
Nimble Data
N
Novee
Slice
Slice
Aim Security
Aim SecurityExit
Alterya
AlteryaExit
Dig Security
Dig SecurityExit
GTE.xyz
GTE.xyzExit
Tres Finance
Tres FinanceExit
Guidde
Guidde
Nimble Data
Nimble Data
N
Novee
Slice
Slice
Aim Security
Aim SecurityExit
Alterya
AlteryaExit
Dig Security
Dig SecurityExit
GTE.xyz
GTE.xyzExit
Tres Finance
Tres FinanceExit
Guidde
Guidde
Nimble Data
Nimble Data
N
Novee
Slice
Slice

Investment Focus

Where we invest

We focus on early-stage Israeli-founded companies across four intersecting domains. We look for technical founders with deep domain expertise solving hard problems with novel approaches.

Cybersecurity

The threat landscape evolves faster than enterprise defenses. We back founders building identity-first security, cloud-native protection, threat detection and response, and zero-trust architectures — companies that make security proactive, not reactive.

Data Infrastructure

Data is the foundation of every modern business decision. We invest in the next generation of pipelines, real-time streaming, storage, and the modern data stack — the picks and shovels that power analytics and AI at scale.

AI / ML

AI is transforming every industry, but the infrastructure underneath matters most. We focus on ML infrastructure, LLM tooling and applications, AI operations, and the developer experience that makes AI accessible to every engineering team.

B2B Fintech

Financial infrastructure is being rebuilt for the API era. We back founders building payment rails, embedded finance, risk and compliance tooling, and the connective tissue between traditional finance and modern software — turning regulated, slow workflows into developer-friendly building blocks.

Our Thesis

“The best technical companies — across cybersecurity, data, AI, and B2B fintech — are increasingly built by Israeli founders who combine deep technical talent with a security-first mindset. We aim to be their earliest believer.”

Pre-Seed through Series A  ·  Check sizes $50K – $250K  ·  Hands-on advisory

Co-Investors

We invest alongside

A small selection of the firms we’ve co-invested with across the portfolio — leading US generalists, growth and crossover funds, and the best Israeli early-stage firms.

Accel
NEA
Lightspeed
Redpoint
Norwest
Battery Ventures
Insight Partners
Coatue
Canaan
Acrew Capital
TLV Partners
Viola
Pitango
Vertex Ventures
YL Ventures
Team8
Notable Capital
Snowflake Ventures
Gradient Ventures

About

Opher Kahane

Opher Kahane

Angel Investor & Advisor

LINKEDIN PROFILE

I'm a serial entrepreneur turned investor with over 30 years in technology. My career has spanned founding and scaling companies, leading engineering teams, and advising startups from their earliest days through exits.

Sonoma Ventures is my family's investing and advisory vehicle. I focus exclusively on Israeli-founded startups at the pre-seed through Series A stages, with deep conviction in cybersecurity, data infrastructure, and AI/ML. I've seen firsthand how the Israeli ecosystem produces world-class technical founders — and I want to be their earliest supporter.

I don't just write checks. I work closely with founders on go-to-market strategy, product positioning, customer introductions, and hiring. My approach is hands-on and high-trust — I believe the best investor-founder relationships are built on candor and real operational partnership.

When I'm not meeting founders, you'll find me building this very website with my 13-year-old son — our latest father-son project.

Get in Touch

Interested in our portfolio or want to discuss an investment opportunity?

© 2026 Sonoma Ventures.