# Ian Rountree

> Ian Rountree is a seed investor at Cantos (San Francisco) backing Biotechnology and Software. See 55 investments, check sizes, portfolio. Updated Aug 2026.

- Type: Angel Investor
- Fund: [Cantos](https://shizune.co/investors/profile/cantos-ventures)
- Location: San Francisco, United States
- Total investments: 55
- Last investment: Mar 2025
- Lead investor: 16%
- Last updated: Aug 2026
- LinkedIn: https://www.linkedin.com/in/ianrountree/
- X (Twitter): https://twitter.com/ianrountree

Ian Rountree is a General Partner and Founder of Cantos Ventures.

## Round sizes

| Stage | Round size |
| --- | --- |
| Seed | $1.2M–$6M |
| Pre-Seed | $700k–$3.3M |
| Series A | $5M–$23M |

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Biotechnology | 9 | 16% |
| Software | 7 | 13% |
| Information Technology | 5 | 9% |
| Aerospace | 4 | 7% |
| Energy | 3 | 5% |

72 industries tracked in total.

### Stage

| Stage | Investments | Share |
| --- | --- | --- |
| Seed | 23 | 42% |
| Series A | 15 | 27% |
| Pre-Seed | 6 | 11% |
| Series B | 4 | 7% |
| Funding Round | 2 | 4% |

### Country

| Country | Investments | Share |
| --- | --- | --- |
| United States | 30 | 55% |
| United Kingdom | 2 | 4% |
| Canada | 1 | 2% |

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| Pilgrim | Pioneering a biologically enhanced future for humanity. | $3.3M | Pre-Seed | Mar 17, 2025 |  |
| Pilgrim | Pioneering a biologically enhanced future for humanity. |  | Seed | Mar 17, 2025 |  |
| Salient Motion | Salient Motion is an electric motion operating system designed to reimagine the American supply chain with help of cutting-edge software. | $4M | Seed | Oct 01, 2024 |  |
| Intramotev | Intramotev Autonomous Rail manufactures autonomous zero-emissions rail vehicles to advance the future of freight movement. Intramotev's vehicles provide efficient and cost-effective movement of materials across specialized private railroads for mines, manufacturing facilities, ports, and more that is autonomous and fully battery-electric,enabling rail and mining industries to get lower emissions than diesel-electric locomotives and diesel trucks, shorter stopping distance, and steeper grade capability than existing trains. | $14.4M | Series A | Aug 15, 2024 |  |
| The Lumber Manufactory | The Lumber Manufactory is a sawmmilling company that offers sustainable manufacturing of dimensional wood products. | $4.1M | Seed | May 28, 2024 |  |
| Pow.bio | Pow.bio provides intelligent fermentation services for industrial and synthetic biology, helping turn great ideas into profitable products. We combine continuous fermentation with advanced control methodology to quickly optimize your fermentation process and deliver high yields at low costs. Our scale runs from 1-100 liter capacity for bacteria,yeast, and filamentous fungi. | $9.7M | Series A | Oct 04, 2023 |  |
| Cache Energy | Cache Energy is developing energy storage technology that is non-toxic, non-flammable, and a fire retardant for easy transportation. | $4.5M | Seed | Aug 25, 2023 |  |
| SoloPulse | SoloPulse is changing how the world sees by bringing a new approach to sensing and communication technologies that is based on proprietary mathematical wave theory algorithms. This approach unlocks barriers that legacy technologies face while also improving computational efficiency and resolution. SoloPulse’s advanced sensing and beamformingtechniques can use a single electromagnetic pulse to produce high-resolution imaging and increased data transmission rates. | $2.3M | Pre-Seed | Jan 01, 2023 |  |
| Intramotev | Intramotev Autonomous Rail manufactures autonomous zero-emissions rail vehicles to advance the future of freight movement. Intramotev's vehicles provide efficient and cost-effective movement of materials across specialized private railroads for mines, manufacturing facilities, ports, and more that is autonomous and fully battery-electric,enabling rail and mining industries to get lower emissions than diesel-electric locomotives and diesel trucks, shorter stopping distance, and steeper grade capability than existing trains. | $6.5M | Seed | Sep 12, 2022 |  |
| Dusty Robotics | Dusty Robotics develops robot-powered tools for the modern construction workforce. Their flagship product, the FieldPrinter, turns digital BIM designs into fully-constructible layouts in the field quickly and accurately. The company was founded in 2018 and is based in Mountain View, California, United States. | $45M | Series B | May 10, 2022 |  |

10 of 55 investments shown.

## Co-investors
- [Refactor](https://shizune.co/investors/profile/refactor-capital) — VC Fund, 7 deals together
- [Bee Partners](https://shizune.co/investors/profile/bee-partners) — VC Fund, 6 deals together
- [Flybridge](https://shizune.co/investors/profile/flybridge-capital) — VC Fund, 6 deals together
- [Y Combinator](https://shizune.co/investors/profile/y-combinator) — VC Fund, 6 deals together
- [Fifty Years](https://shizune.co/investors/profile/fifty-years) — VC Fund, 5 deals together
- [Andreessen Horowitz](https://shizune.co/investors/profile/andreessen-horowitz) — VC Fund, 4 deals together

## About Cantos

VC Fund · San Francisco, United States

Cantos is a pre-seed venture capital firm with $90M under management that invests in founders audacious enough to believe they can change the world.

3 contacts available at Cantos.

| Name | Title | Profile |
| --- | --- | --- |
| Amee Kapadia | Principal | https://shizune.co/investors/profile/amee-kapadia-fe39 |
| Grant Gregory | Principal | https://shizune.co/investors/profile/grant-gregory-be21 |
| Ian Rountree | General Partner & Founder | https://shizune.co/investors/profile/ian-rountree |

## Similar investors

### Similar stage
- [Antler](https://shizune.co/investors/profile/antler-be9c) — VC Fund
- [Alumni Ventures](https://shizune.co/investors/profile/alumni-ventures-group) — VC Fund
- [Right Side Capital Management](https://shizune.co/investors/profile/right-side-capital-management) — VC Fund

## FAQ

### What does Ian Rountree invest in?

Ian Rountree invests primarily in Biotechnology, Software and Information Technology startups, most often at Seed and Series A stage. Most of the 55 investments tracked by Shizune back companies in United States. The Investment Focus section breaks down every industry, stage and country in the portfolio.

### What is Ian Rountree's check size?

Ian Rountree typically joins rounds of $1.2M–$6M at Seed, $700k–$3.3M at Pre-Seed and $5M–$23M at Series A. These ranges are 10th–90th percentile round sizes calculated from confirmed public funding rounds, so they are a realistic guide to the rounds Ian Rountree participates in.

### When did Ian Rountree last invest?

The most recent investment recorded for Ian Rountree closed in Mar 2025. Shizune tracks 55 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.

# About Shizune
Shizune.co is an investor database. Core features:
- 48,091 startup investors (angels, VCs, accelerators, and others)
- Email, phone, LinkedIn (for intros), socials, and other contact data
- Updated daily from public funding news
- CSV and Excel export

The User can access the full database FOR FREE after signing up: shizune.co