# Brian Armstrong

> Brian Armstrong is a seed investor at Coinbase Ventures backing Biotechnology and Payments. See 19 investments, check sizes, portfolio. Updated Aug 2026.

- Type: Angel Investor
- Fund: [Coinbase Ventures](https://shizune.co/investors/profile/coinbase-ventures)
- Location: San Francisco, United States
- Total investments: 19
- Last investment: May 2026
- Lead investor: 0%
- Last updated: Aug 2026
- LinkedIn: https://www.linkedin.com/in/barmstrong/
- X (Twitter): http://twitter.com/brian_armstrong
- Website: https://www.brianarmstrong.org

Brian Armstrong is a seed investor at Coinbase Ventures in San Francisco focused on Biotechnology and Payments. Brian Armstrong is the CEO and Co-Founder of Coinbase. He previously worked at Airbnb.com as a Technical Product Manager. Brian Armstrong attended Rice University.

## Round sizes

| Stage | Round size |
| --- | --- |
| Seed | $2M–$25M |
| Series A | $13M–$30M |
| Series B | $45M–$130M |

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Biotechnology | 4 | 21% |
| Payments | 3 | 16% |
| Financial Services | 3 | 16% |
| Information Technology | 3 | 16% |
| Banking | 2 | 11% |

34 industries tracked in total.

### Stage

| Stage | Investments | Share |
| --- | --- | --- |
| Seed | 8 | 42% |
| Series A | 4 | 21% |
| Series B | 2 | 11% |
| Funding Round | 1 | 5% |
| Venture - Series Unknown | 1 | 5% |

### Country

| Country | Investments | Share |
| --- | --- | --- |
| United States | 11 | 58% |
| Brazil | 2 | 11% |
| Libya | 1 | 5% |

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| NavigateAI | NavigateAI is an AI copilot for the physical world specifically designed for construction and field service teams to help them complete projects faster, with higher quality, and at lower costs. | $25M | Seed | May 26, 2026 |  |
| Preventive | Preventive mission is to determine whether the newest generation of gene editing technologies can be used safely and responsibly to correct devastating genetic conditions for future children. | $30M | Venture - Series Unknown | Oct 30, 2025 |  |
| Brain Co. | Brain Co. is a San Francisco-based AI company, that partners with large enterprises and governments to build secure, impactful AI platforms and applications for real-world problems. It delivers faster, cost-saving, and reliable AI solutions, including automation and optimization across sectors like healthcare, energy, and government. R | $30M | Series A | Sep 10, 2025 |  |
| NewLimit | NewLimit specializes in treating age-related diseases to extend the human health span. It works on developing epigenetic reprogramming medicines to treat diseases with large unmet needs. | $130M | Series B | May 06, 2025 |  |
| Orchid | Orchid is a reproductive technology startup that is capable of detecting rare genetic disorders. Orchid’s preconception system analyzes both partners’ genomes and assesses genetic predispositions to common diseases, including heart disease, stroke, schizophrenia, Alzheimer’s disease, breast cancer, and diabetes. Orchid results are developed withworld-class experts in reproductive medicine and genetics to give its clients the most accurate results.Orchid offers a “Couple Report” that utilizes an at-home saliva test to analyze each person’s genomes to detect the probability of genetic risks, then models how their DNA together will combine in a future child. If elevated risk is detected, Orchid provides insights to help couples monitor biomarkers, adapt their diet or elect for procedures, such as in vitro fertilization. It was founded by Noor Siddiqui in 2019 and is headquartered in San Francisco, California. | $12M | Seed | Dec 05, 2023 |  |
| Stark Bank | Stark Bank is a smart bank account that aids a technological advancement of a company. It is a financial technology that allows companies to expand their operations by allowing them to make extra transfers, payments, and charges. | $13.3M | Series A | Dec 08, 2021 |  |
| Stark Bank | Stark Bank is a corporate bank in Brazil | $13.3M | Series A | Dec 08, 2021 |  |
| Binti | Binti builds modern software to help every child have a safe, loving, and stable family. 300+ child welfare agencies across 33 states use Binti's tools to care for over 30% of children in child welfare in the US. Our software covers the end-to-end of child welfare, from helping agencies efficiently recruit, license, and match foster parents,to supporting families of origin in getting back on their feet and reunifying with their children. Our products are designed specifically to address the complexities of child welfare. Agencies working with us have licensed 80% more families on average in their first year on Binti, with a 16% reduction in time to approve and 20-40% savings in social worker time. Binti is a for-profit, mission-driven company. Investors include Founders Fund, First Round Capital, Kapor Capital, and others. | $45M | Series B | Aug 27, 2021 |  |
| AtoB | AtoB is a technology company building payments infrastructure for the transportation industry. AtoB was founded by Harshita Arora, Vignan Velivela, and Tushar Misra and is based in San Francisco, California. | $25M | Series A | Jun 01, 2021 |  |
| Orchid | Orchid is a reproductive technology startup that is capable of detecting rare genetic disorders. Orchid’s preconception system analyzes both partners’ genomes and assesses genetic predispositions to common diseases, including heart disease, stroke, schizophrenia, Alzheimer’s disease, breast cancer, and diabetes. Orchid results are developed withworld-class experts in reproductive medicine and genetics to give its clients the most accurate results.Orchid offers a “Couple Report” that utilizes an at-home saliva test to analyze each person’s genomes to detect the probability of genetic risks, then models how their DNA together will combine in a future child. If elevated risk is detected, Orchid provides insights to help couples monitor biomarkers, adapt their diet or elect for procedures, such as in vitro fertilization. It was founded by Noor Siddiqui in 2019 and is headquartered in San Francisco, California. | $4.5M | Seed | Apr 07, 2021 |  |

10 of 19 investments shown.

## Co-investors
- [Refactor](https://shizune.co/investors/profile/refactor-capital) — VC Fund, 4 deals together
- [Day One Ventures](https://shizune.co/investors/profile/day-one-ventures) — VC Fund, 3 deals together
- [Affinity Partners](https://shizune.co/investors/profile/affinity-partners) — VC Fund, 2 deals together
- [FBG Capital](https://shizune.co/investors/profile/fbg-capital) — VC Fund, 2 deals together
- [First Round Capital](https://shizune.co/investors/profile/first-round-capital) — VC Fund, 2 deals together
- [Founders Fund](https://shizune.co/investors/profile/founders-fund) — VC Fund, 2 deals together

## About Coinbase Ventures

VC Fund · San Francisco, United States

Coinbase Ventures is an investment arm of Coinbase that aims to invest in seed-stage cryptocurrency and blockchain startups. The company was founded in 2018 and is based in San Francisco, California, United States.

3 contacts available at Coinbase Ventures.

| Name | Title | Profile |
| --- | --- | --- |
| Brian Armstrong | Founder & CEO | https://shizune.co/investors/profile/brian-armstrong |
| Max Branzburg | Investor | https://shizune.co/investors/profile/max-branzburg |
| Shan Aggarwal | Head of Coinbase Ventures | https://shizune.co/investors/profile/shan-aggarwal |

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## FAQ

### What does Brian Armstrong invest in?

Brian Armstrong invests primarily in Biotechnology, Payments and Financial Services startups, most often at Seed and Series A stage. Most of the 19 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 Brian Armstrong's check size?

Brian Armstrong typically joins rounds of $2M–$25M at Seed, $13M–$30M at Series A and $45M–$130M at Series B. These ranges are 10th–90th percentile round sizes calculated from confirmed public funding rounds, so they are a realistic guide to the rounds Brian Armstrong participates in.

### When did Brian Armstrong last invest?

The most recent investment recorded for Brian Armstrong closed in May 2026. Shizune tracks 19 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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