Sean Maier works as a Director at WestRiver Group. The firm's known portfolio counts 8 companies.
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Investment focus
Contacts
Affiliated funds' portfolios
Director at WestRiver Group, whose known portfolio counts 8 companies
- Colossal Biosciences
- Groopit
- Viome
- Cheq
- Lumen Bioscience
- Alladapt Immunotherapeutics
- Talespin
- QorusDocs
Investor Profile
Founders in the listed sectors Consumer, Education, FinTech and Hardware, and focus areas Aerospace, Analytics, Biotech and Cloud Infrastructure fall inside that listing.
Stage-wise, the deals at WestRiver Group cluster around Growth, Seed and Series B rounds.
What the affiliated firm has backed is the closest available signal on whether Sean Maier is worth approaching.
Colleagues at WestRiver Group
Aaron Vaccaro
Managing Director
Sacramento, United States
Erik Anderson
Founder and CEO
Las Vegas, United States
Anthony Bontrager
Managing Director
Seattle, United States
Harper Ellison
Vice President
Seattle, United States
Frequently asked questions
Who is Sean Maier?
Sean Maier is a venture capital investor based in Seattle, Washington, United States, listed as Director at WestRiver Group. The known portfolio of that firm counts 8 companies. That portfolio belongs to the firm, not to Sean Maier personally.
What does Sean Maier invest in?
Listed sectors include Consumer, Education, FinTech and Hardware; listed focus areas include Aerospace, Analytics, Biotech and Cloud Infrastructure. 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 Sean Maier invest at?
WestRiver Group appears in Growth, Seed and Series B rounds across its known deals, and Sean Maier is listed there as 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 Sean Maier listed at?
Sean Maier is listed as Director at WestRiver Group. 4 other people in the database share a firm with Sean Maier.
How do I contact Sean Maier?
An email address, a phone number and a LinkedIn page are on file for Sean Maier. 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