Josh Feinblum

Josh Feinblum

Partner atF-Prime CapitalCambridge

Josh Feinblum is a venture partner in Cambridge and cofounder of Stavvy, a Boston fintech company. He previously served as CSO at DigitalOcean and launched Rapid7's security organization, and advises at MIT's Martin Trust Center.

What Josh can write

Writes checks of$1M to $30M+
Comes in atPre-seed, Seed, Series A, Series BCan lead the round
Ownership target7-10%At first check
Email the firm[email protected]The firm's own inbox for founders.

F-Prime Capital writes $1M to $30M+ checks, larger than 83% of firms in the atlas.

Bars: how many firms report each check band. Highlighted: F-Prime Capital.

Career

  1. Rapid7 · CSO
  2. DigitalOcean · Chief Security Officer (CSO)
  3. Stavvy · cofounder
  4. F-Prime Capital · Venture Partner
    Now

Companies founded

Stavvy

Focus

entrepreneurshipfinancial servicescybersecurityprivacyanti-fraud technology

Education

University of Maryland, Bachelor's degreeSloan School of Management at MIT, MBA

Also at F-Prime Capital

Partners like Josh

At firms with a similar stage, sector and check size.

Alert me when F-Prime Capital is active

One email when Josh's firm raises a fund, adds a partner or shows new activity.

Founders and investors at a Mode VC gathering

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Raising a pre-seed or seed round? We write $1M to $5M first checks and help founders with distribution. A partner reads every deck.

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Questions

Who is Josh Feinblum?

Josh Feinblum is a venture partner in Cambridge and cofounder of Stavvy, a Boston fintech company. He previously served as CSO at DigitalOcean and launched Rapid7's security organization, and advises at MIT's Martin Trust Center.

How much does Josh Feinblum invest?

Josh Feinblum invests through F-Prime Capital, which writes checks of $1M to $30M+ at pre-seed, seed, series a, series b.

How do I pitch Josh Feinblum?

Email [email protected], the firm's inbox for founders, and name Josh in the subject. A warm intro from a founder F-Prime Capital backed works better.

What did Josh Feinblum do before F-Prime Capital?

CSO at Rapid7; Chief Security Officer (CSO) at DigitalOcean; cofounder at Stavvy.

Last updated 2026-10-15. Is this you? Ask for a correction.