Cantos Ventures

General contacts

Investor type

Founded

2016

AUM

$120 M

Location

San Francisco, California, United States

Investment Ticket

$1-5 m

Investment Stage

Seed Pre-seed

Region of investment

North America Europe

Investor profile last updated: 16 August, 2026

Profile

Cantos Ventures is a venture capital firm based in San Francisco, California, founded in 2016 by Ian Rountree. The firm is composed of a small team of dedicated professionals who focus on investing in deeply technical founders at the inception stage. Cantos Ventures is distinguished by its commitment to supporting founders who are not only capable but also driven by a mission to create a positive impact on the world.

The firm invests in sectors such as climate tech, computational biology, aerospace, and next-generation computing. Cantos Ventures typically participates in seed rounds, providing initial capital and ongoing counsel to its portfolio companies. The firm has a diverse portfolio and has been involved in over 116 investments, with a focus on companies based in the United States. Notable funds include Cantos Ventures I and Cantos Ventures III, with assets under management totaling $54 million.

Cantos Ventures has backed several notable companies, including Astranis - satellite internet provider, Solugen - sustainable chemical manufacturing, Twelve - carbon transformation technology, Dusty Robotics - construction automation, and Venus Aerospace - hypersonic flight technology. These investments reflect the firm's commitment to supporting innovative solutions that address critical global challenges.

Industry

HealthTech LegalTech Energy Infrastructure Life Sciences Technology MedTech Telecommunications Robotics Pharmaceuticals Other Internet and Web Services Foodtech Transportation Software Real Estate Healthcare Services Food and Beverage Fintech Nuclear / Fusion Financial Services SaaS CleanTech

Cantos Ventures Funds

Name	Type	Industry	Stage	Region	Size	AUM	Launch date
Cantos Ventures I	Venture Capital (VC)	Financial Services Fintech Healthcare Services SaaS Software Energy CleanTech HealthTech	Pre-seed Seed	North America	$5-10 m	$4 M	July 2016
Cantos Ventures III	Venture Capital (VC)	Financial Services Fintech Healthcare Services SaaS Software Energy CleanTech HealthTech	Pre-seed Seed	North America	$5-10 m	$50 M	September 2022

Contacts

Name

Title

Social Networks

Ian Rountree General Partner

General Partner

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Grant Gregory Partner

Partner

g•••@•••

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Investment-team contacts for Cantos Ventures — including verified work emails and LinkedIn profiles — are available to Private Equity List subscribers.
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Contacts sourced from the firm's website and LinkedIn, re-verified on a rolling cycle. Spot a stale contact, or none at all? Report it — we re-run that firm within 48h and get back to you.

FAQs about Cantos Ventures

Is Cantos Ventures a venture capital or private equity firm?

Cantos Ventures is a venture capital firm. It backs companies at Seed and Pre-seed, writing tickets of $1-5 m.

Where is Cantos Ventures located?

Cantos Ventures is located in San Francisco, California, United States.

When was Cantos Ventures founded?

Cantos Ventures was founded in 2016.

What sectors and industries does Cantos Ventures invest in?

Cantos Ventures invests in companies and startups in HealthTech, LegalTech, Energy, Infrastructure, Life Sciences, Technology, MedTech, Telecommunications, Robotics, Pharmaceuticals, Other, Internet and Web Services, Foodtech, Transportation, Software, Real Estate, Healthcare Services, Food and Beverage, Fintech, Nuclear / Fusion, Financial Services, SaaS, CleanTech.

What is Cantos Ventures geographical focus of investments?

Cantos Ventures invests in companies and startups in North America, Europe.

At what stages of companies and startups does Cantos Ventures typically invest in?

Cantos Ventures invests in companies and startups at Seed, Pre-seed.

What is the usual amount of Cantos Ventures investment?

Cantos Ventures usually invests $1-5 m on average.

What is the amount of assets of under management (AUM) for Cantos Ventures?

Cantos Ventures has around $120m assets under management.

When was Cantos Ventures last fund created?

Cantos Ventures last fund was created/launched in 2022-09-01

What are the contacts of Cantos Ventures?

Cantos Ventures can be reached through its website cantos.vc, its LinkedIn page and its X account. Its general enquiries address is [email protected]. Cold-mailing a general inbox rarely reaches a partner, so Private Equity List also lists the investment-team contacts for Cantos Ventures — names, roles, verified work emails and LinkedIn profiles — available on a Pro plan from $129/month (see pricing). Contacts are sourced from the firm's website and LinkedIn and re-verified on a rolling cycle. Spot a stale contact, or none at all? Report it — we re-run that firm within 48h and get back to you.

Can I access Cantos Ventures data via API or MCP?

Yes. Every field on this page — profile, funds, investment criteria, portfolio and investment-team contacts — is available programmatically through the Private Equity List REST API and MCP server, so AI assistants such as Claude and ChatGPT can query Cantos Ventures directly instead of scraping this page. One subscription covers both the web app and machine access — see API & MCP.

When was the Cantos Ventures profile last updated?

Private Equity List re-verifies investor profiles on a rolling cycle, pulling from the firm's own website and LinkedIn rather than a one-off import. This profile was last updated on 16 August, 2026. Something out of date here? Report it — we re-run that firm within 48h and get back to you.