# Cantos

> Cantos is a VC fund in San Francisco backing Software and Biotechnology. See 126 investments, check sizes, portfolio and contact details. Updated Aug 2026.

- Type: VC Fund
- Location: San Francisco, United States
- Total investments: 126
- Last investment: May 2026
- Lead investor: 17%
- Fund size: $50M
- Last fund: Sep 2022
- Last updated: Aug 2026
- LinkedIn: https://www.linkedin.com/company/cantos-ventures
- X (Twitter): https://twitter.com/cantosvc
- Website: http://cantos.vc/
- Facebook: https://www.facebook.com/cantosvc/

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.

## Contacts

5 contacts available for Cantos. Shizune tracks 3 team members at Cantos. Sign up free to unlock them: https://app.shizune.co/sign-up/investor-profiles/find-team-emails/cantos-ventures?utm_source=investor_profile

## Round sizes

| Stage | Round size |
| --- | --- |
| Seed | $1.8M–$11M |
| Pre-Seed | $700k–$6M |
| Series A | $5M–$47M |

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Software | 20 | 16% |
| Biotechnology | 20 | 16% |
| Health Care | 9 | 7% |
| Manufacturing | 9 | 7% |
| Information Technology | 9 | 7% |

126 industries tracked in total.

### Stage

| Stage | Investments | Share |
| --- | --- | --- |
| Seed | 56 | 44% |
| Series A | 26 | 21% |
| Pre-Seed | 8 | 6% |
| Series B | 8 | 6% |
| Convertible Note | 6 | 5% |

7 stages tracked in total.

### Country

| Country | Investments | Share |
| --- | --- | --- |
| United States | 68 | 54% |
| United Kingdom | 3 | 2% |
| Canada | 2 | 2% |
| Nigeria | 1 | 1% |

## Team

| Name | Title | Investments | Profile |
| --- | --- | --- | --- |
| Amee Kapadia | Principal | 1 | https://shizune.co/investors/profile/amee-kapadia-fe39 |
| Grant Gregory | Principal | 1 | https://shizune.co/investors/profile/grant-gregory-be21 |
| Ian Rountree | General Partner & Founder | 55 | https://shizune.co/investors/profile/ian-rountree |

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| Heaviside Industries | Heaviside Industries is a defense technology company that develops autonomous precision munitions for land, air, and sea systems. | $28M | Series A | May 11, 2026 |  |
| Vital Lyfe | Vital Lyfe is a Climatech product manufacturer that develops systems to produce safe drinking water from a range of natural sources, including seawater, without reliance on centralized infrastructure. The company designs portable water-making hardware that combines filtration, purification, and engineering principles adapted from aerospace toenable autonomous operation in diverse environments. Its offerings aim to serve use cases where traditional water infrastructure is limited or unavailable, such as humanitarian relief, maritime operations, disaster response, and off-grid communities.Vital Lyfe provides hardware platforms alongside supporting software for monitoring and management of water quality and system performance. The company engages with partners in sectors like non-governmental organizations, maritime organizations, and outdoor or expedition users to deploy and validate its solutions. It continues to refine and scale its technologies toward broader market availability and expanded field applications. | $18M | Seed | Dec 16, 2025 |  |
| Castelion | Pallas is a venture-backed defense tech company applying modern hardware development and manufacturing processes to critical national security challenges, specifically to solve affordability, scale, and supply chain robustness. | $350M | Series B | Dec 05, 2025 |  |
| Arbor Energy | Arbor Energy presents systems that convert organic waste and traditional fuels into electricity while capturing carbon dioxide from the atmosphere. The company designs modular power stations built around a supercritical CO₂ turbine and oxy-combustion technology to deliver baseload electricity with zero operating emissions. Arbor Energy’s approachemphasizes fuel flexibility, allowing the use of natural gas, syngas, or organic waste, and aims to support both reliable energy production and carbon-removal efforts. The company also highlights a background rooted in aerospace engineering and applies those technical skills to power generation. Through its integrated technology, Arbor Energy offers a pathway for stakeholders to engage in power production and carbon management under one platform. | $55M | Series A | Oct 21, 2025 |  |
| Adaptyx Biosciences | Adaptyx Biosciences develops wearable sensors. | $14M | Seed | Oct 20, 2025 |  |
| Faeth Therapeutics | Faeth Therapeutics is a data-driven, evidence-based company that specializes in mechanistic understanding of the way that dietary nutrients influence tumor growth and cancer treatment. It fully focuses on matching specific diets with tumor genotypes and treatment regimens to improve the outcomes of cancer therapy.The company was founded totranslate breakthrough discoveries, made by cancer research laboratories, into clinical practice. Its founding team includes some of the industry’s preeminent researchers and clinicians. | $25M | Series A | Oct 20, 2025 |  |
| MoldCo | MoldCo helps individuals to reclaim their health from mold. | $8M | Seed | Sep 18, 2025 |  |
| Pilgrim | Pioneering a biologically enhanced future for humanity. | $4.3M | Seed | Aug 06, 2025 |  |
| Vital Lyfe | Vital Lyfe is a Climatech product manufacturer that develops systems to produce safe drinking water from a range of natural sources, including seawater, without reliance on centralized infrastructure. The company designs portable water-making hardware that combines filtration, purification, and engineering principles adapted from aerospace toenable autonomous operation in diverse environments. Its offerings aim to serve use cases where traditional water infrastructure is limited or unavailable, such as humanitarian relief, maritime operations, disaster response, and off-grid communities.Vital Lyfe provides hardware platforms alongside supporting software for monitoring and management of water quality and system performance. The company engages with partners in sectors like non-governmental organizations, maritime organizations, and outdoor or expedition users to deploy and validate its solutions. It continues to refine and scale its technologies toward broader market availability and expanded field applications. |  | Pre-Seed | Jun 30, 2025 |  |
| Shinkei Systems | Shinkei Systems is a robotic company intended to minimize fish waste and multiply shelf-life. It offer key point inference, depth perception, surgical accuracy, species and production tracking to the fishing industry, enabling fishing businesses to remove labor costs and speed up processing without any error. | $22M | Series A | Jun 13, 2025 |  |

10 of 126 investments shown.

## Co-investors
- [Refactor](https://shizune.co/investors/profile/refactor-capital) — VC Fund, 12 deals together
- [Y Combinator](https://shizune.co/investors/profile/y-combinator) — VC Fund, 12 deals together
- [Andreessen Horowitz](https://shizune.co/investors/profile/andreessen-horowitz) — VC Fund, 10 deals together
- [Fifty Years](https://shizune.co/investors/profile/fifty-years) — VC Fund, 10 deals together
- [KdT Ventures](https://shizune.co/investors/profile/kdt-ventures) — VC Fund, 9 deals together
- [Flybridge](https://shizune.co/investors/profile/flybridge-capital) — VC Fund, 7 deals together

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## FAQ

### What does Cantos invest in?

Cantos invests primarily in Software, Biotechnology and Health Care startups, most often at Seed and Series A stage. Most of the 126 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 Cantos's check size?

Cantos typically joins rounds of $1.8M–$11M at Seed, $700k–$6M at Pre-Seed and $5M–$47M 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 Cantos participates in.

### How do I contact Cantos?

Public channels for Cantos include LinkedIn, X (Twitter) and the website linked on this profile. For a verified work email and phone number, create a free Shizune account — contact data is searched across 20+ sources and validated before delivery, so your outreach lands in the right inbox.

### Who are the partners at Cantos?

The team at Cantos includes Amee Kapadia (Principal), Grant Gregory (Principal) and Ian Rountree (General Partner & Founder). The Team section lists each member with their title, investment count and links.

### 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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