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First Harmonic

Venture Capital

First Harmonic is a Venture Capital firm based in San Francisco, United States.

San Francisco-based early-stage venture capital firm that invests in founders and runs a non-dilutive go-to-market program to accelerate portfolio growth.

Seed
Early Stage
Artificial Intelligence
Fintech
SaaS
Headquarters
San Francisco, United States
Founded
2025
Website
firstharmonic.com
Portfolio Companies
6
Total Investments
6
Last Investment
Sep 2026
Geographic Focus
United States
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Indexed holds 6 portfolio companies and 6 funding rounds for this investor. The full record is or through the API.

Investment Thesis

Early-stage investors pairing capital with a structured go-to-market program to help founders build repeatable revenue engines.

It was founded in 2025. It has made 6 investments. Its portfolio includes Actively AI, Rebolt and AIUC. Focus areas include Artificial Intelligence and Fintech.

Portfolio6

Co-investors20

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20 co-investors across 22 shared portfolio companies — who they back alongside, and how often they lead.

Venture Capital ×18 · Accelerator ×2 · 18 shared rounds

Investment History

Data from Indexed.vcUpdated

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First Harmonic on Indexed.vc
<a href="https://indexed.vc/investors/first-harmonic"><img src="https://indexed.vc/api/badge/investor/first-harmonic" alt="First Harmonic on Indexed.vc" width="260" height="76" /></a>