# Seraph Group

> Seraph Group is a VC fund in Foster City backing Software and Health Care. See 75 investments, check sizes, portfolio and contact details. Updated Aug 2026.

- Type: VC Fund
- Location: Foster City, United States
- Total investments: 75
- Last investment: Jul 2026
- Lead investor: 12%
- Fund size: $3.6M
- Last fund: Jun 2014
- Last updated: Aug 2026
- LinkedIn: http://www.linkedin.com/company/seraph-group
- X (Twitter): http://twitter.com/SeraphGroup
- Website: http://www.seraphgroup.net

Seraph Group is an angel investor that invests between $50,000 and $1,000,000 in early-stage startups.

## Contacts

5 contacts available for Seraph Group. Shizune tracks 6 team members at Seraph Group. Sign up free to unlock them: https://app.shizune.co/sign-up/investor-profiles/find-team-emails/seraph-group?utm_source=investor_profile

## Round sizes

| Stage | Round size |
| --- | --- |
| Seed | $800k–$6M |
| Series A | $2M–$23M |
| Series B | $5.5M–$51M |

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Software | 21 | 28% |
| Health Care | 15 | 20% |
| Artificial Intelligence | 11 | 15% |
| Medical | 7 | 9% |
| Analytics | 7 | 9% |

111 industries tracked in total.

### Stage

| Stage | Investments | Share |
| --- | --- | --- |
| Seed | 24 | 32% |
| Series A | 15 | 20% |
| Series B | 11 | 15% |
| Angel | 9 | 12% |
| Funding Round | 6 | 8% |

9 stages tracked in total.

### Country

| Country | Investments | Share |
| --- | --- | --- |
| United States | 53 | 71% |
| Canada | 1 | 1% |
| Latvia | 1 | 1% |
| Taiwan | 1 | 1% |
| Pakistan | 1 | 1% |

6 countries tracked in total.

## Team

| Name | Title | Investments | Profile |
| --- | --- | --- | --- |
| Peter Truwit | Partner | 0 | https://shizune.co/investors/profile/peter-truwit |
| Stephen Fleming | Investment Committee | 1 | https://shizune.co/investors/profile/stephen-fleming |
| Tuff Yen | CEO | 10 | https://shizune.co/investors/profile/tuff-yen |
| Charles Ralston | Principal | 0 | https://shizune.co/investors/profile/charles-ralston |
| Jake Moilanen | General Partner | 0 | https://shizune.co/investors/profile/jake-moilanen |

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| Venus Aerospace | Venus Aerospace is a space company that provides an innovative approach to hypersonic transportation. Venus Aerospace is a startup aerospace company focused on engineering the future of hypersonic flight. We are making one-hour global transport possible to connect the world and make it safer.The company is an expert team of PhDs, rocketscientists, and engineers taking on the biggest challenges in aerospace at Mach 9 speed. The company also takes pride in being moms and dads, military veterans, and BBQ enthusiasts. | $91M | Series B | Jul 08, 2026 |  |
| 4AG Robotics | 4AG Robotics develops fully automated harvesting devices to replace manual labor in commercial mushroom farms. | $29M | Series B | Jul 29, 2025 |  |
| Pinpoint Predictive | Pinpoint Predictive offers property and casualty insurers loss predictions and risk scores with only a name and address. Their platform allows insurers to leverage unmatched risk selection at the beginning of the customer journey. | $23M | Series A | Oct 08, 2024 |  |
| Tristar AI | Tristar AI is a software development company that provides AI-enabled manufacturing solutions. | $3.2M | Seed | Jun 05, 2024 |  |
| Cropsy Technologies | Cropsy's mission is to deliver disruptive, scalable technology to every fruit grower to unlock the full potential of their land with insights that were impossible before. Our proprietary AI-enabled hardware allows growers to monitor every plant, understand the whole crop, and track how it changes over time. These insights help growers optimiseall their decision making. The system is a simple tractor add-on, so growers do all their daily operations while Cropsy looks out for problems. Cropsy is poised to set the new gold standard for growing, with recommendations, forecasts, and providing certainty to every grower, every season. | $1M | Seed | Oct 04, 2023 |  |
| Flywheel.io | Flywheel is a data management and analysis platform built specifically for scientists and the researcher's workflow. They empower research momentum by focusing on data and medical image capture, content management, scientific computation, and collaboration. With reproducible research in mind, they combine open-source methods from topuniversities, a modern web user interface, and an extensible compute engine based on containerization technology. The result is a software platform to accelerate discovery and help researchers do science, not IT.Flywheel accelerates new scientific discoveries in life-science, biotech, and academic imaging research through cloud-scale collaboration. As a result, imaging researchers are able to avoid innovation bottlenecks, and accelerate discovery by doing more science, and less IT. | $54M | Series D | Jun 03, 2023 |  |
| Autio | HearHere is a travel audio app that shares the depth and diversity of stories - cultural, geographical, historical, and mythological. | $2.4M | Seed | Mar 29, 2023 |  |
| GridRival | GridRival is a sports betting startup built for race fans with the mission of making motorsports more engaging. We accomplish this through a valuable and unique fusion of fantasy-style gaming & betting, motorsports content, and built-in social functionality. | $4.3M | Seed | Mar 10, 2023 |  |
| Natilus | Natilus is a large scale drone manufacturing company. The company specializes in the manufacturing of Boeing 747 sized drones which provides inter-continental cargo delivery services and helps in reducing air freight costs. Natilus was founded by LZ Zhang, Anatoly Starikov and Aleksey Matyushev in 2016.First flight of their 2200 lbs / 30 ftdrone is scheduled for Summer 2018. At the end of 2018, Natilus completed a flight test of their 2200 lbs prototype.The first production vehicle scheduled for 2020 customer delivery underwent wind tunnel testing in April, 2019. Natilus currently holds an aircraft order book rumored to be in excess of $1B+. |  |  | Dec 16, 2022 |  |
| IMTC | IMTC is a SaaS-based enterprise fintech provider that is fundamentally changing the way asset and wealth management firms manage fixed income assets for their clients. |  | Venture - Series Unknown | May 12, 2022 |  |

10 of 75 investments shown.

## Co-investors
- [Sunstone Management](https://shizune.co/investors/profile/sunstone-management-inc-067f) — VC Fund, 6 deals together
- [500 Global](https://shizune.co/investors/profile/500-startups) — VC Fund, 4 deals together
- [Draper Associates](https://shizune.co/investors/profile/draper-associates-2) — VC Fund, 4 deals together
- [Y Combinator](https://shizune.co/investors/profile/y-combinator) — VC Fund, 4 deals together
- [Applied Ventures](https://shizune.co/investors/profile/applied-ventures) — VC Fund, 3 deals together
- [Base Ventures](https://shizune.co/investors/profile/base-vc) — VC Fund, 3 deals together

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## FAQ

### What does Seraph Group invest in?

Seraph Group invests primarily in Software, Health Care and Artificial Intelligence startups, most often at Seed and Series A stage. Most of the 75 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 Seraph Group's check size?

Seraph Group typically joins rounds of $800k–$6M at Seed, $2M–$23M at Series A and $5.5M–$51M 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 Seraph Group participates in.

### How do I contact Seraph Group?

Public channels for Seraph Group 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 Seraph Group?

The team at Seraph Group includes Peter Truwit (Partner), Stephen Fleming (Investment Committee) and Tuff Yen (CEO), among 6 team members tracked by Shizune. 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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