Felix Horton

Principal at Sandstone Venture Partners | ex-Robinhood

Sandstone Venture Partners

Miami, FL · ET (UTC-5)

6+ years experience

Stanford University

English

Investing Advising

Messaging unavailable

Overview

Principal at Sandstone Venture Partners, backing fintech companies. Sit on 4 boards. Before that: Robinhood and Okta.

Good reasons to reach out

Founders building in fintech
Advice on fintech
Thoughtful intros to people in my field
Working sessions on due diligence
Speaking or podcast invitations

Please don't message about

Fund-of-funds solicitations
Courses and coaching offers

Skills

due diligencebiotechventure capitalboard work

InvestingLooking to invest

closes in 3 months

Writing $50k cheques into pre-seed fintech in LatAm

Cheque size: $50k
Stages: Pre-seed, Seed
Sectors: Fintech, B2B SaaS
Geographies: Global
Lead or follow: Co-lead
Decision time: One meeting and a partner call
How I help: First enterprise customers and pricing

Usually the first cheque in. Portfolio support on pricing and enterprise sales.

Miami, FLboard workbiotechventure capital

Open

AdvisingOpen to advising

closes in 3 months

Office hours for angels writing a first cheque: fintech and biotech

Topics: fintech, board work, biotech
Format: Office hours
Terms: Equity
Capacity: One advisory role at a time
Best for: Teams scaling past 50 people

6 years of fintech. Prefer specific questions over coffee chats.

Miami, FLdue diligencebiotechboard work

Open

Experience

Principal
Mar 2025 - Present
Sandstone Venture Partners · 1 yr 7 mo · Full-time · Miami, FL
- Backed 15 founders at pre-seed and seed.
- Led or co-led 33 investments, 6 of them now at Series B or later.
Principal Product Manager
Nov 2022 - Feb 2025
Robinhood · 2 yr 3 mo · Full-time · Miami, FL
- Previously an operator for 12 years before investing.
Associate Product Manager
Oct 2020 - Nov 2022
Okta · 2 yr 1 mo · Full-time · Miami, FL
- Took marketplace activation from 21% to 38% in three quarters.

References

No references yet.

Education

Stanford University
BS, Finance
2015 - 2019

Details

Compensation expectations

What they are targeting for their next role.

Visible to connections

Direct contact details

Direct email and a scheduling link.