# Brian Singerman

> Brian Singerman is a Series A investor at Founders Fund backing Health Care and Software. See 30 investments, check sizes, portfolio. Updated Aug 2026.

- Type: Angel Investor
- Fund: [Founders Fund](https://shizune.co/investors/profile/founders-fund)
- Location: San Francisco, United States
- Total investments: 30
- Last investment: May 2026
- Lead investor: 37%
- Last updated: Aug 2026
- LinkedIn: https://www.linkedin.com/in/brian-singerman-9333b52
- X (Twitter): http://twitter.com/briansin
- Website: https://x.com/briansin

Brian Singerman is a Series A investor at Founders Fund in San Francisco focused on Health Care and Software. Brian Singerman is based out of San Francisco, California and is the Partnerof Founders Fund.

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Health Care | 6 | 20% |
| Software | 4 | 13% |
| Wellness | 3 | 10% |
| Information Technology | 3 | 10% |
| Gaming | 2 | 7% |

63 industries tracked in total.

### Stage

| Stage | Investments | Share |
| --- | --- | --- |
| Series A | 7 | 23% |
| Series B | 7 | 23% |
| Seed | 3 | 10% |
| Series C | 3 | 10% |
| Series G | 2 | 7% |

11 stages tracked in total.

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| Garner Health | Garner Health is a healthcare technology company that provides a platform designed to help employers and employees access high-performing medical providers. It analyzes clinical performance data and claims information to identify physicians based on quality and outcomes metrics. The company partners with employers to offer benefit programs thatinclude financial incentives for employees who select providers through its platform. It also supports navigation services that assist members in finding and scheduling care. Its model combines data analytics, provider evaluation, and benefits integration to support informed healthcare decisions. | $100M | Series E | May 28, 2026 |  |
| Chronosphere, Inc. A Palo Alto Networks Company | Chronosphere is an observability platform that empowers cloud native engineering organizations to control for data volumes, rampant costs and organizational friction that comes from rapid scale and technical complexity.Chronosphere is a Series C startup with more than $255M in funding and backed by VC firms Greylock, Lux Capital General Atlantic,Founder Fund, Spark Capital, and investor Lee Fixel.The team is distributed with major hubs in New York and Vilnius. | $115M | Series C | Jan 05, 2023 |  |
| Inworld AI | Inworld AI is a realtime AI model and infrastructure company, and the leading consumer AI infrastructure platform. Inworld provides industry-leading realtime generative models, including the world’s #1-ranked voice AI models, intelligent model routing and optimization, and an Agent Runtime, enabling developers to build and deploy interactive AIapplications to millions of concurrent users.Inworld primarily serves use cases where realtime interaction and sophisticated agent capabilities are critical, such as companion apps, developer assistants, and agents for learning & education, health & wellness, interactive media and enterprise. At its core, Inworld is a product-oriented research lab of top AI researchers and engineers. The founding team led product for LLMs at DeepMind and built Dialogflow, the conversational AI platform acquired by Google. Inworld has raised $125M+ from Lightspeed, Kleiner Perkins, Founders Fund, CRV, Stanford, Microsoft M12, Meta, Intel Capital, Samsung NEXT, LG Tech Ventures, and Bitkraft among others. | $50M | Series A | Aug 23, 2022 |  |
| Traba | Traba is building a world where the global supply chain operates at peak efficiency. We connect industrial businesses with reliable workers to fill open shifts and empower both businesses and workers to reach their full productivity and potential. | $20M | Series A | Jul 07, 2022 |  |
| Garner Health | Garner Health is a healthcare technology company that provides a platform designed to help employers and employees access high-performing medical providers. It analyzes clinical performance data and claims information to identify physicians based on quality and outcomes metrics. The company partners with employers to offer benefit programs thatinclude financial incentives for employees who select providers through its platform. It also supports navigation services that assist members in finding and scheduling care. Its model combines data analytics, provider evaluation, and benefits integration to support informed healthcare decisions. | $45M | Series B | Dec 14, 2021 |  |
| Chronosphere, Inc. A Palo Alto Networks Company | Chronosphere is an observability platform that empowers cloud native engineering organizations to control for data volumes, rampant costs and organizational friction that comes from rapid scale and technical complexity.Chronosphere is a Series C startup with more than $255M in funding and backed by VC firms Greylock, Lux Capital General Atlantic,Founder Fund, Spark Capital, and investor Lee Fixel.The team is distributed with major hubs in New York and Vilnius. | $200M | Series C | Oct 07, 2021 |  |
| Calibrate | Calibrate is a digital metabolic health business that provides a virtual program for weight loss. It is creating a new category by improving metabolic health to drive long-term, sustainable weight loss with a program designed by world leaders in obesity and nutrition science. Calibrate combines FDA-approved metabolic medication with a holisticcurriculum and 1:1 virtual coaching sessions that drive lasting behavior change. The company was founded in 2020 and is headquartered in New York. | $100M | Series B | Aug 25, 2021 |  |
| Traba | Traba is building a world where the global supply chain operates at peak efficiency. We connect industrial businesses with reliable workers to fill open shifts and empower both businesses and workers to reach their full productivity and potential. | $3.6M | Seed | Jul 22, 2021 |  |
| Modern Health | Modern Health is a mental well-being platform for innovative companies offering therapy, coaching, and self-guided courses all in one app. The platform combines the WHO well-being assessment, self-service wellness kits, a network of certified coaches, and licensed therapists available in 35 languages all available in a seamless app. It empowersemployers to charge in acknowledging that mental health is just as important as physical health, destigmatizing the conversation, and increasing the accessibility of mental health services for all. | $74M | Series D | Feb 11, 2021 |  |
| Garner Health | Garner Health is a healthcare technology company that provides a platform designed to help employers and employees access high-performing medical providers. It analyzes clinical performance data and claims information to identify physicians based on quality and outcomes metrics. The company partners with employers to offer benefit programs thatinclude financial incentives for employees who select providers through its platform. It also supports navigation services that assist members in finding and scheduling care. Its model combines data analytics, provider evaluation, and benefits integration to support informed healthcare decisions. | $12.5M | Series A | Feb 03, 2021 |  |

10 of 30 investments shown.

## Co-investors
- [Khosla Ventures](https://shizune.co/investors/profile/khosla-ventures) — VC Fund, 6 deals together
- [Kleiner Perkins](https://shizune.co/investors/profile/kleiner-perkins-caufield-byers) — VC Fund, 6 deals together
- [Thrive Capital](https://shizune.co/investors/profile/thrive-capital) — VC Fund, 5 deals together
- [General Catalyst](https://shizune.co/investors/profile/general-catalyst-partners) — VC Fund, 4 deals together
- [Baillie Gifford](https://shizune.co/investors/profile/baillie-gifford) — VC Fund, 3 deals together
- [Forerunner](https://shizune.co/investors/profile/forerunner-ventures) — VC Fund, 3 deals together

## About Founders Fund

VC Fund · San Francisco, United States

Founders Fund is a venture capital firm that invests at every stage in companies building revolutionary technologies. It has been investors, founders, and early employees of prominent technology companies. It has historically invested in a wide variety of sectors, including aerospace, artificial intelligence, advanced computing, energy, health, andconsumer Internet.

5 contacts available at Founders Fund.

| Name | Title | Profile |
| --- | --- | --- |
| Delian Asparouhov | Principal | https://shizune.co/investors/profile/delian-asparouhov |
| John Luttig | Principal | https://shizune.co/investors/profile/john-luttig-2 |
| Napoleon Ta | Partner | https://shizune.co/investors/profile/napoleon-ta |
| Amin Mirzadegan | Principal | https://shizune.co/investors/profile/amin-mirzadegan-2d99 |
| Brian Singerman | Partner | https://shizune.co/investors/profile/brian-singerman |

## 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
- [General Catalyst](https://shizune.co/investors/profile/general-catalyst-partners) — VC Fund

## FAQ

### What does Brian Singerman invest in?

Brian Singerman invests primarily in Health Care, Software and Wellness startups, most often at Series A and Series B stage. Most of the 30 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 Brian Singerman last invest?

The most recent investment recorded for Brian Singerman closed in May 2026. Shizune tracks 30 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