# Kevin Tidwell

> Kevin Tidwell is a seed investor at Grantham Foundation backing Environmental Consulting. See 12 investments, check sizes, portfolio. Updated Aug 2026.

- Type: Angel Investor
- Fund: [Grantham Foundation](https://shizune.co/investors/profile/grantham-foundation)
- Total investments: 12
- Last investment: Oct 2024
- Lead investor: 58%
- Last updated: Aug 2026
- LinkedIn: https://www.linkedin.com/in/kevin-tidwell-00b6412/

Kevin Tidwell is a Managing Director at Grantham Foundation. He attended Yale University - Forestry and Environmental Science.

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Environmental Consulting | 2 | 17% |
| Chemical | 1 | 8% |
| Computer | 1 | 8% |
| Shipping | 1 | 8% |
| Software | 1 | 8% |

18 industries tracked in total.

### Stage

| Stage | Investments | Share |
| --- | --- | --- |
| Seed | 4 | 33% |
| Series A | 2 | 17% |
| Pre-Seed | 1 | 8% |
| Funding Round | 1 | 8% |
| Venture - Series Unknown | 1 | 8% |

### Country

| Country | Investments | Share |
| --- | --- | --- |
| United States | 6 | 50% |
| Canada | 1 | 8% |

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| Carbon Ridge | Carbon Ridge is a technology that offers a fuel-independent method to decarbonize ships. | $9.5M |  | Oct 22, 2024 |  |
| Travertine | Travertine process accelerates the Earth’s natural carbon cycle to precipitate carbonate minerals from carbon dioxide in the air, permanently storing carbon in the solid phase. | $8.5M | Venture - Series Unknown | Jun 25, 2024 |  |
| Arca Climate Technologies, Inc. | Carbin Minerals unlock the enormous carbon dioxide removal potential of mine waste. | $5M | Pre-Seed | Feb 16, 2023 |  |
| Carbon Ridge | Carbon Ridge is a technology that offers a fuel-independent method to decarbonize ships. | $6M | Seed | Sep 22, 2022 |  |
| Banyu Carbon | Banyu Carbon focuses on developing a novel photocatalytic approach to marine carbon dioxide removal. It was founded in 2022 and is headquartered in Seattle, Washington. | $6.5M | Seed | Sep 22, 2022 |  |
| Carbon Counts | Carbon Counts is creating a Play-to-Plant game called EverForest that will inspire millions of people to take individual and collective action to combat climate change. The mobile gameplay will have an impact on the real world as users play in the EverForest. Because the company plants, grows, and protects trees in the real world on their behalf asthey grow forests and make them flourish in-game. It collaborates with some of the world's most progressive organizations to help regenerate thriving ecosystems. | $4.5M | Seed | Aug 24, 2022 |  |
| Carbon Counts | Carbon Counts is creating a Play-to-Plant game called EverForest that will inspire millions of people to take individual and collective action to combat climate change. The mobile gameplay will have an impact on the real world as users play in the EverForest. Because the company plants, grows, and protects trees in the real world on their behalf asthey grow forests and make them flourish in-game. It collaborates with some of the world's most progressive organizations to help regenerate thriving ecosystems. | $4.5M | Seed | Aug 24, 2022 |  |
| Travertine | Travertine process accelerates the Earth’s natural carbon cycle to precipitate carbonate minerals from carbon dioxide in the air, permanently storing carbon in the solid phase. | $3M | Seed | Jun 15, 2022 |  |
| Arca Climate Technologies, Inc. | Carbin Minerals unlock the enormous carbon dioxide removal potential of mine waste. | $1.5M | Pre-Seed | Dec 20, 2021 |  |
| Sustaera | Sustaera offers a direct air capture solution that works ranging from open grasslands to arid deserts to tropical savannas. The company was founded in 2021 and is headquartered in Cary, North Carolina, United States. | $10M | Series A | Dec 16, 2021 |  |

10 of 12 investments shown.

## Co-investors
- [Grantham Foundation](https://shizune.co/investors/profile/grantham-environmental-trust) — VC Fund, 7 deals together
- [Berge Bulk](https://shizune.co/investors/profile/berge-bulk) — VC Fund, 3 deals together
- [Plug and Play](https://shizune.co/investors/profile/plug-and-play-ventures) — VC Fund, 3 deals together
- [Rusheen Capital Management](https://shizune.co/investors/profile/rusheen-capital-management) — VC Fund, 3 deals together
- [Borderless Capital](https://shizune.co/investors/profile/algo-capital) — VC Fund, 2 deals together
- [Algorand](https://shizune.co/investors/profile/algorand) — VC Fund, 2 deals together

## About Grantham Foundation

VC Fund · Boston, United States

Grantham Foundation seeks to protect and improve the health of global environmental issues and supports individuals and organizations. It also supports communication and collaboration in environmental protection, with an emphasis on climate change.The foundation focuses on communications to enable the general public to understand that climatechange represents the world’s primary environmental threat today and that mitigating and adapting to a changing climate will lead to a more sustainable and prosperous future.Grantham Foundation was founded in 1997 by Jeremy and Hannelore Grantham and is based in Boston, Massachusetts, USA.

5 contacts available at Grantham Foundation.

| Name | Title | Profile |
| --- | --- | --- |
| Kevin Tidwell | Managing Director | https://shizune.co/investors/profile/kevin-tidwell |
| Ramsay Ravenel | President and CIO | https://shizune.co/investors/profile/ramsay-ravenel |
| Eric Smith | Investment Officer | https://shizune.co/investors/profile/eric-smith-bd8b |
| Hannelore Grantham | Co-Founder | https://shizune.co/investors/profile/hannelore-grantham |
| Jeremy Grantham | Co-Founder | https://shizune.co/investors/profile/jeremy-grantham |

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## FAQ

### What does Kevin Tidwell invest in?

Kevin Tidwell invests primarily in Environmental Consulting, Chemical and Computer startups, most often at Seed and Series A stage. Most of the 12 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 Kevin Tidwell last invest?

The most recent investment recorded for Kevin Tidwell closed in Oct 2024. Shizune tracks 12 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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