Brian Grassadonia is an angel investor based in San Francisco, California, United States with 2 known investments: Tile and Opendoor Technologies.
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Investment focus
- Stage
- Seed
Contacts
Brian Grassadonia portfolio companies (2)
- Tile
- Opendoor Technologies
Affiliated funds' portfolios
Ecosystem Lead at Block, whose known portfolio counts 12 companies
- Flip
- TRM Labs
- Stem Disintermedia
- Servify
- Satispay
- Yellow Card
- Gemini
- Tezos
- Gridless
- Kyash
- Aston Reinvestment Trust
- Telda
Investor Profile
The known portfolio sits in sectors Commerce, Consumer, FinTech and SaaS, and focus areas Cash Management, Cryptocurrency, E-Commerce and Enterprise SaaS.
Stage-wise, the known deals cluster around Seed rounds.
The portfolio and focus above give founders context on whether Brian Grassadonia matches their raise.
Colleagues at Block
Roelof Botha
Board Member
Menlo Park, United States
Bernier Lauredan Jr.
Strategy & Planning Leader
Los Angeles, United States
Doug Howard
Investor
Denver, United States
Justin M. Block
Investor
Jacksonville Beach, United States
Chase Bucklew Geddes
Support Content Lead
Portland, United States
Paul N.
Chief Privacy Officer
San Francisco, United States
Ias Arjun Raj Sinha
Investor
San Francisco, United States
Allan Markerburg
Investment Analyst
Gainesville, United States
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Frequently asked questions
Who is Brian Grassadonia?
Brian Grassadonia is an angel investor based in San Francisco, California, United States with 2 known investments on file, among them Tile and Opendoor Technologies. The sections above list the sectors, stages and firms attached to that record.
What does Brian Grassadonia invest in?
Listed sectors include Commerce, Consumer, FinTech and SaaS; listed focus areas include Cash Management, Cryptocurrency, E-Commerce and Enterprise SaaS. 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 Brian Grassadonia invest at?
The known deals of Brian Grassadonia 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 Brian Grassadonia listed at?
Brian Grassadonia is listed as Ecosystem Lead at Block. 8 other people in the database share a firm with Brian Grassadonia.
How do I contact Brian Grassadonia?
An email address, a phone number and a LinkedIn page are on file for Brian Grassadonia. 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