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Jonathan Kolber

Verified: Sep 2026 (SMTP Validated)🌱 Pre-Seed Pioneer
United States
𝕏in
Check Size Range

Flexible Check Size

Preferred Stages
pre-seedseed

Background & Investment Thesis

Partner at Viola Ventures. Active early-stage technology angel investor and VC.

Focus Industries

aisaas
AI Outreach Insight94% Match Score

Active investor in ai, saas. Highly responsive to concise pitches with clear traction metrics.

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Key Deal Terms & Quick Facts

Audited venture due diligence summary for Jonathan Kolber

Verified Deal Signals
Typical Check Size

Undisclosed ($25k – $250k typical for early angels)

Direct angel check per syndicate / round
Target Stages
pre-seedseed
Early-stage entry valuation priority
Founder Pitch Contact

Verified (Protected — Unlock)

Direct mailbox protected against spam
Focus Industries & Categories
aisaas

Frequently Asked Questions about Jonathan Kolber

What is Jonathan Kolber's typical angel check size?▼

Jonathan Kolber's investment check size typically ranges around Undisclosed ($25k – $250k typical for early angels), participating in early-stage financing rounds alongside leading venture capital funds and angel syndicates.

What stages and sectors does Jonathan Kolber invest in?▼

Jonathan Kolber primarily backs early-stage startups across pre-seed, seed stages, focusing on ai, saas.

What companies are in Jonathan Kolber's angel portfolio?▼

Jonathan Kolber actively participates in early-stage technology investments and venture syndicates.

How can startup founders contact or pitch Jonathan Kolber?▼

Founders can access verified direct email contact channels, AI-assisted pitch drafting, and syndicate warm intro paths for Jonathan Kolber through OpenAngels.