# Thin Line Capital

Thin Line Capital is a Private Equity based in Pasadena, United States.

## Overview

- **Organization type:** Private Equity
- **Headquarters:** Pasadena, United States
- **Region:** North America
- **Address:** Pasadena, CA, United States
- **Founded:** 2017
- **Assets under management:** Undisclosed
- **Website:** thinlinecapital.com
- **LinkedIn:** https://www.linkedin.com/company/thin-line-capital

## Regulatory record

- **CRD number:** 304900
- **SEC file number:** 802-129854
- **Registration status:** Registered
- **Reports private funds:** Yes
- **IAPD record:** https://adviserinfo.sec.gov/firm/summary/304900

## About

Thin Line Capital is an energy and sustainability venture capital firm. Its principals are entrepreneurs who have started six climate-tech companies, including two unicorns. The firm invests in seed-stage, low-capex companies targeting renewable energy, electrification of transport, and climate resiliency, and aims to play an active role supporting founders.

## Sectors

- Energy/Sustainability

## People

- Aaron Fyke — Founder and Managing Partner

## Questions

### Does Thin Line Capital participate in fund commitments or only direct deals?

The firm's disclosed strategy emphasizes direct venture investing across stages rather than operating as a fund-of-funds. Whether Thin Line Capital ever allocates to external managers as an LP is not known from the public record; its stated focus points exclusively toward direct company investments.

## Related profiles

- [ThinkZone Ventures](https://altss.com/profile/thinkzone-ventures)
- [thinQbate](https://altss.com/profile/thinqbate)

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Last updated: 2026-08-11T15:08:18.003Z

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