An angel investor and operator angel based in Boston, Massachusetts, United States, David Brewster has 8 known investments: Desalitech, LineVision, ReferralMob, Inc., Antin Infrastructure Partners, EnergyHub, Environmental Impact Acquisition Corporation, Mantis Innovation Group and PearlX.
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Investment focus
- Stage
- Seed
- Sector
- AIClimateReal EstateSaaS
- Focus
- Clean EnergyData AnalyticsEnterprise SaaSMachine LearningPower Grid
Contacts
David Brewster portfolio companies (8)
- Desalitech
- LineVision
- ReferralMob, Inc.
- Antin Infrastructure Partners
- EnergyHub
- Environmental Impact Acquisition Corporation
- Mantis Innovation Group
- PearlX
Affiliated funds' portfolios
Advisor at Informa, whose known portfolio counts 7 companies
- Markopolo AI
- Cover Genius
- Reme-D
- FarmEASY
- Lahint Company
- Opmantek
- Wicrypt
Investor Profile
The listing covers sectors AI, Climate, Real Estate and SaaS, and focus areas Clean Energy, Data Analytics, Enterprise SaaS and Machine Learning. Startups operating in these areas may find David Brewster relevant.
Stage-wise, the known deals cluster around Seed rounds.
The portfolio and focus above give founders context on whether David Brewster matches their raise.
Colleagues at Informa
Yash Sankrityayan
Board Member & Investor
Singapore
Jared Golden
Board Director
Chicago, United States
Amish Tolia
CEO & Co-Founder
New York, United States
Kristian Bodek
Investor, Board Observer
Boston, United States
Abe Yokell
Board Observer, Investor
San Francisco, United States
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Frequently asked questions
Who is David Brewster?
David Brewster is an angel investor and operator angel based in Boston, Massachusetts, United States with 8 known investments on file, among them Desalitech, LineVision and ReferralMob, Inc. The sections above list the sectors, stages and firms attached to that record.
What does David Brewster invest in?
Listed sectors include AI, Climate, Real Estate and SaaS; listed focus areas include Clean Energy, Data Analytics, Enterprise SaaS and Machine Learning. 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 David Brewster invest at?
The known deals of David Brewster 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 David Brewster listed at?
David Brewster is listed as Advisor at Informa. 5 other people in the database share a firm with David Brewster.
How do I contact David Brewster?
A phone number and a LinkedIn page are on file for David Brewster. They are readable inside RaiseHunt after you create an account. The database holds no email address for this profile.
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Data: RaiseHunt investor dataset · Snapshot 5 September 2026 · How this data is built · Report a correction or request removal