Brian Lewis works as an Investment Director at Polaris Partners. The firm's known portfolio counts 18 companies.
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Investment focus
- Sector
- AIHealthcareSaaS
Contacts
Affiliated funds' portfolios
Investment Director at Polaris Partners, whose known portfolio counts 18 companies
- Tropic Biosciences
- Freenome
- Auron Therapeutics
- Zag Bio
- EpiBiologics
- TRex Bio
- Crossbow Therapeutics
- Lyndra Therapeutics
- Vico Therapeutics
- Sovato Health
- Cohere Health
- Seismic Therapeutic
- and 6 more
Investor Profile
Founders in the listed sectors AI, Healthcare and SaaS, and focus areas Analytics, Biopharma, Biotech and Data fall inside that listing.
Stage-wise, the deals at Polaris Partners cluster around Growth, Seed and Series A rounds.
The firm portfolio and the focus above give founders context on whether Brian Lewis matches their raise.
Colleagues at Polaris Partners
Gary Swart
Partner
Atherton, United States
George Conrades
Investor
Hobe Sound, United States
Steve Arnold
Co-Founder and Partner Emeritus
Seattle, United States
Eileen McGuire
Investor
Boston, United States
Dave Barrett
Managing Partner
Boston, United States
Brian Chee
Managing Partner
San Francisco, United States
Darren Carroll
Senior Executive
United States
Terry McGuire
Partner
Weston, United States
Alexandra Cantley
Partner
New York, United States
Bryce Youngren
Managing Partner
Waltham, United States
Jon Flint
Founding Partner
Lincoln, United States
Dan Lombard
Partner
Boston, United States
Amir Nashat
Entrepreneur Partner
Cambridge, United States
Karen Saunders
Director
Boston, United States
Kevin Bitterman
Principal
Waltham, United States
Queenmeenu Meenu
Venture Capital & Private Equity Professional
Chennai, India
Kim Png
Principal
Singapore
Edward Shen
Venture Partner
San Francisco, United States
Frequently asked questions
Who is Brian Lewis?
Brian Lewis is a venture capital investor based in San Francisco, California, United States, listed as Investment Director at Polaris Partners. The known portfolio of that firm counts 18 companies. That portfolio belongs to the firm, not to Brian Lewis personally.
What does Brian Lewis invest in?
Listed sectors include AI, Healthcare and SaaS; listed focus areas include Analytics, Biopharma, Biotech and Data. Those tags come from the portfolios of the firms this profile is attached to, so they read as a record of what has been backed rather than a stated preference for what comes next.
What stage does Brian Lewis invest at?
Polaris Partners appears in Growth, Seed and Series A rounds across its known deals, and Brian Lewis is listed there as Investment Director. 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 Brian Lewis listed at?
Brian Lewis is listed as Investment Director at Polaris Partners. 18 other people in the database share a firm with Brian Lewis.
How do I contact Brian Lewis?
A LinkedIn page is on file for Brian Lewis. It is readable inside RaiseHunt after you create an account. The database holds no email address and no phone number 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