An angel investor and operator angel based in Boston, Massachusetts, United States, Jon Karlen has one known investment, Manifold.
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Investment focus
- Stage
- Series A
Contacts
Jon Karlen portfolio company (1)
- Manifold
Affiliated funds' portfolios
Founder and Chairman at Acadian Software, whose known portfolio counts 4 companies
- CaseGlide
- Legible AI
- ROLLER
- Style Arcade
Investor Profile
The known portfolio sits in sectors Consumer, FinTech, Healthcare and SaaS, and focus areas Biotech, Consumer Software, Diagnostics and E-Commerce.
The stage tag on this profile is Series A.
The portfolio and focus above give founders context on whether Jon Karlen matches their raise.
Colleagues at Acadian Software
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Frequently asked questions
Who is Jon Karlen?
Jon Karlen is an angel investor and operator angel based in Boston, Massachusetts, United States with one known investment on file, Manifold. The sections above list the sectors, stages and firms attached to that record.
What does Jon Karlen invest in?
Listed sectors include Consumer, FinTech, Healthcare and SaaS; listed focus areas include Biotech, Consumer Software, Diagnostics and E-Commerce. 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 Jon Karlen invest at?
The database lists Jon Karlen for Series A 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 Jon Karlen listed at?
Jon Karlen is listed as Founder and Chairman at Acadian Software. One other person in the database shares a firm with Jon Karlen.
How do I contact Jon Karlen?
An email address, a phone number and a LinkedIn page are on file for Jon Karlen. 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