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Helen Greiner

Verified: Jun 2026 (Profile Confirmed)🚀 High-Velocity
Boston, MA
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Check Size Range

Flexible Check Size

Preferred Stages
Pre-seed & Seed

Background & Investment Thesis

Co-founder of iRobot (Roomba). Founder of CyPhy Works. Pioneer angel investor in robotics and drones.

Focus Industries

roboticshardwaredefense
AI Outreach Insight94% Match Score

Active investor in robotics, hardware, defense. 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 Helen Greiner

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
roboticshardwaredefense

Frequently Asked Questions about Helen Greiner

What is Helen Greiner's typical angel check size?▼

Helen Greiner'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 Helen Greiner invest in?▼

Helen Greiner primarily backs early-stage startups across Pre-seed, Seed stages, focusing on robotics, hardware, defense.

What companies are in Helen Greiner's angel portfolio?▼

Helen Greiner actively participates in early-stage technology investments and venture syndicates.

How can startup founders contact or pitch Helen Greiner?▼

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