Investor profile
Helen Greiner
Angel, Operator angel & Advisor at Cybernetix Ventures, Co-Founder at iRobot
An angel investor and operator angel based in Beverly, Massachusetts, United States, Helen Greiner has 2 known investments: Preemadonna and Bounce Imaging.
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Investment focus
- Stage
- Seed
Contacts
Helen Greiner portfolio companies (2)
- Preemadonna
- Bounce Imaging
Affiliated funds' portfolios
Advisor at Cybernetix Ventures, whose known portfolio counts 8 companies
- Kewazo
- Dash Bio
- Corsha
- Raise Robotics
- Bionomous
- Enigma Aerospace
- Verve Motion
- Instock
Co-Founder at iRobot, whose known portfolio counts 12 companies
- SENSE
- Osaro
- Synthesis AI
- Awair
- Invisible AI
- 6 River Systems
- Intuition Robotics
- Jargon
- Labrador Systems
- Locix
- Escher Reality
- Hasty.ai
Investor Profile
The known portfolio sits in sectors AI, Climate, Hardware and Healthcare, and focus areas Accessibility Technology, Clean Energy, Robotics and Space.
Stage-wise, the known deals cluster around Seed rounds.
Reviewing the investment history helps decide whether there is a realistic fit before reaching out.
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Frequently asked questions
Who is Helen Greiner?
Helen Greiner is an angel investor and operator angel based in Beverly, Massachusetts, United States with 2 known investments on file, among them Preemadonna and Bounce Imaging. The sections above list the sectors, stages and firms attached to that record.
What does Helen Greiner invest in?
Listed sectors include AI, Climate, Hardware and Healthcare; listed focus areas include Accessibility Technology, Clean Energy, Robotics and Space. Those tags come from the companies attached to this profile, so they read as a record of what has been backed rather than a stated preference for what comes next.
What stage does Helen Greiner invest at?
The known deals of Helen Greiner include Seed rounds. Stage is the strongest single filter when you build a target list: an investor with no record at your stage rarely starts with you.
Which firm is Helen Greiner listed at?
Helen Greiner is listed as Co-Founder at iRobot. 3 other people in the database share a firm with Helen Greiner.
How do I contact Helen Greiner?
An email address, a phone number and a LinkedIn page are on file for Helen Greiner. The address stays masked on this page and is readable inside RaiseHunt after you create an account.
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Data: RaiseHunt investor dataset · Snapshot 5 September 2026 · How this data is built · Report a correction or request removal