# David Fleck

> David Fleck is a Series A investor at Freeflow Ventures (Pasadena) backing CleanTech and GreenTech. See 1 investments, check sizes, portfolio. Updated Aug 2026.

- Type: Angel Investor
- Fund: [Freeflow Ventures](https://shizune.co/investors/profile/freeflow-ventures)
- Location: Pasadena, United States
- Total investments: 1
- Last investment: Oct 2024
- Lead investor: 0%
- Last updated: Aug 2026
- LinkedIn: https://www.linkedin.com/in/davidfleck
- X (Twitter): https://twitter.com/davidericfleck
- Website: https://x.com/davidericfleck

David Fleck is a Series A investor at Freeflow Ventures in Pasadena focused on CleanTech and GreenTech. David Fleck is the Founder and General Partner of Freeflow Ventures and was the Chief Strategy Officer of Disqus.

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| CleanTech | 1 | 100% |
| GreenTech | 1 | 100% |
| Clean Energy | 1 | 100% |
| Renewable Energy | 1 | 100% |

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| Calicat | Calicat is a clean-energy company developing a proprietary electrocatalyst discovery process for electrolyser. The company electrocatalyst discovery is an unprecedented, proprietary, end-to-end ultrahigh throughput AI and data-driven process focused on the discovery of new catalysts for the generation of clean hydrogen and fuel cell powerproduction. The process prepares, characterizes, and quantifies the catalytic activity of millions of compositions per month and then closes the loop with big data analysis and AI to refine/guide the search. | $3M | Series A | Oct 23, 2024 |  |

1 of 1 investments shown.

## Co-investors
- [Jericho Energy Ventures](https://shizune.co/investors/profile/jericho-energy-ventures) — VC Fund, 2 deals together
- [Acario](https://shizune.co/investors/profile/acario-innovation) — VC Fund, 1 deal together
- [Dolby Family Ventures](https://shizune.co/investors/profile/dolby-family-ventures) — VC Fund, 1 deal together
- [Hess Corporation](https://shizune.co/investors/profile/hess-corporation) — VC Fund, 1 deal together
- [MOL Switch](https://shizune.co/investors/profile/mol-switch) — VC Fund, 1 deal together
- [Motus Ventures](https://shizune.co/investors/profile/transportation-technology-ventures) — VC Fund, 1 deal together

## About Freeflow Ventures

VC Fund · Pasadena, United States

Freeflow is a venture firm focused on making pre-seed and seed-stage investments in new companies working to solve complex problems in human and planetary health, and which have a direct connection to the California Institute of Technology (“Caltech”) and the Jet Propulsion Laboratory (“JPL”), an operating division of Caltech, in Pasadena, CA.The GPs are David Fleck and Kevin Barrett, two longtime technology, life sciences and healthcare industry veterans who bring more than 50 combined years of technology and healthcare industry experience. Fred Wilson (Union Square Ventures), Chris Farmer (SignalFire) and Chris Douvos (Ahoy) represent the board of advisors and are also investors. To date our syndicate partners include: 8VC, Sequoia, Coatue, Catalio Capital Management, Nexus Venture Partners, OrbiMed, Embark Ventures, Dolby Family Ventures, Hillhouse Capital, Cultivation Capital, Techstars, Synovia Capital, Heritage, Wilson Hill, and Caltech.

2 contacts available at Freeflow Ventures.

| Name | Title | Profile |
| --- | --- | --- |
| David Fleck | Founder and General Partner | https://shizune.co/investors/profile/david-fleck-807c |
| Kevin C. Barrett | Partner | https://shizune.co/investors/profile/kevin-c-barrett |

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### Similar stage
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## FAQ

### What does David Fleck invest in?

David Fleck invests primarily in CleanTech, GreenTech and Clean Energy startups, most often at Series A stage. Most of the 1 investments tracked by Shizune back companies in United States. The Investment Focus section breaks down every industry, stage and country in the portfolio.

### When did David Fleck last invest?

The most recent investment recorded for David Fleck closed in Oct 2024. Shizune tracks 1 investments in total for this profile, including round sizes, stages and portfolio companies, all sourced from confirmed public funding rounds and refreshed monthly.

### Is Shizune's investor data accurate?

Yes — every stat on this profile is calculated from confirmed public funding rounds monitored across hundreds of sources since 2020. This profile was last refreshed in Aug 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.

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