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Mart de Haar

Verified: Oct 2026 (Profile Confirmed)🌱 Pre-Seed Pioneer
United States
in
Check Size Range

Flexible Check Size

Preferred Stages
pre-seedseed

Background & Investment Thesis

Partner at Nexus Notes. 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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Verified Deal Signals Active

Key Deal Terms & Quick Facts

Audited venture due diligence summary for Mart de Haar

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 Mart de Haar

What is Mart de Haar's typical angel check size?▼

Mart de Haar'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 Mart de Haar invest in?▼

Mart de Haar primarily backs early-stage startups across pre-seed, seed stages, focusing on ai, saas.

What companies are in Mart de Haar's angel portfolio?▼

Mart de Haar actively participates in early-stage technology investments and venture syndicates.

How can startup founders contact or pitch Mart de Haar?▼

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