Investor profile
Jonathan Mariner
Angel, Operator angel & General Partner at Harbinger Sports Partners
Jonathan Mariner is an angel investor and operator angel based in Port St Lucie, Florida, United States. The known portfolio counts 8 companies: Fixt, Kairos, CareWear, ElMindA, MPOWERD, BEAM Authentic, BlazeNow Evergreen Systems and RightEye.
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Investment focus
- Stage
- Seed
Contacts
Jonathan Mariner portfolio companies (8)
- Fixt
- Kairos
- CareWear
- ElMindA
- MPOWERD
- BEAM Authentic
- BlazeNow Evergreen Systems
- RightEye
Affiliated funds' portfolios
General Partner at Harbinger Sports Partners, whose known portfolio counts 1 company
- card.io
Investor Profile
Founders in the listed sectors Consumer and SaaS, and focus areas Productivity and SportsTech will recognize the pattern in this portfolio.
Jonathan Mariner appears in Seed rounds across the known deals.
Reviewing the investment history helps decide whether there is a realistic fit before reaching out.
Colleagues at Harbinger Sports Partners
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Frequently asked questions
Who is Jonathan Mariner?
Jonathan Mariner is an angel investor and operator angel based in Port St Lucie, Florida, United States with 8 known investments on file, among them Fixt, Kairos and CareWear. The sections above list the sectors, stages and firms attached to that record.
What does Jonathan Mariner invest in?
Listed sectors include Consumer and SaaS; listed focus areas include Productivity and SportsTech. 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 Jonathan Mariner invest at?
The known deals of Jonathan Mariner 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 Jonathan Mariner listed at?
Jonathan Mariner is listed as General Partner at Harbinger Sports Partners. One other person in the database shares a firm with Jonathan Mariner.
How do I contact Jonathan Mariner?
An email address, a phone number and a LinkedIn page are on file for Jonathan Mariner. 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