# Gregory F. Eaton

> Gregory F. Eaton is a seed investor at Harmony Partners (Menlo Park) backing Software and Internet. See 5 investments, check sizes, portfolio. Updated Aug 2026.

- Type: Angel Investor
- Fund: [Harmony Partners](https://shizune.co/investors/profile/harmony-partners)
- Location: Menlo Park, United States
- Total investments: 5
- Last investment: Mar 2026
- Lead investor: 100%
- Last updated: Aug 2026
- LinkedIn: http://www.linkedin.com/pub/gregory-eaton/11/b54/b4
- Website: http://www.cheyennevc.com

Gregory F. Eaton is a seed investor at Harmony Partners in Menlo Park focused on Software and Internet. Gregory Eaton has spent the last 20 years as an entrepreneur and investor in the formation of numerous companies. He co-founded Alter Ego Networks (acquired by Macromedia), and five years later co-founded MetaLincs (acquired by Seagate). Greg’s broad investing experience spans the technology, healthcare, cleantech andretail industries.As thefounding General Partner of Rembrandt Venture Partners, Greg managed the firm’s first 20 investments including Commercebid (acquired by CommerceOne), comScore (SCOR), Ebates, Good Technology (acquired by Motorola), ImpulseBuy Network (acquired by Inktomi), Peribit (acquired by Juniper Networks) and YesMail (YESM). He recruited a team of partners and assisted in raising Fund II which led to RVP’s continued success today.In 2008, Greg founded Cheyenne Partners, a growth equity firm where he led the firm’s investments in Greenbox (acquired by Silver Spring Networks) Intersect ENT, Serious Materials, Swype and Xactly.He attended Santa Clara University where he majored in Anthropology.During free time, Greg can be found skiing, hiking, and fly-fishing in the rugged mountains of central Idaho with friends and family.

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Software | 2 | 40% |
| Internet | 1 | 20% |
| Cyber Security | 1 | 20% |
| Computer Vision | 1 | 20% |
| Machine Learning | 1 | 20% |

10 industries tracked in total.

### Stage

| Stage | Investments | Share |
| --- | --- | --- |
| Seed | 2 | 40% |
| Series A | 1 | 20% |
| Series B | 1 | 20% |
| Venture - Series Unknown | 1 | 20% |

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| ArmorCode | ArmorCode offers an AppSecOps platform that reduces application exposure and risk for customers. Its customers use the platform for AppSec Posture, Vulnerability and Compliance Management, and DevSecOps automation. ArmorCode AppSecOps platform is delivering a 10X AppSec Force Multiplier impact to several marquee enterprises. The company wasfounded in 2020 and is based in Palo Alto, California. | $16M | Venture - Series Unknown | Mar 03, 2026 |  |
| AuthMind | AuthMind is an identity security firm that identifies and prevents hidden identity risks through access neural network technologies. The company's platform takes an all-encompassing approach and provides continuous access to risk intelligence. | $19.3M | Seed | Apr 22, 2025 |  |
| Rad Security | RAD Security offers a complete AI-driven platform that empowers organizations to secure their AI workloads and cloud infrastructure with real-time, behavior-driven defense. Building on its battle-tested Cloud Detection and Response (CDR) platform, RAD enhances its capabilities to help enterprises safeguard their AI systems as they grow and adapt.With a focus on proactive security and continuous adaptation, RAD Security enables businesses to confidently navigate the complexities of AI security while maintaining seamless, scalable protection. | $14M | Series A | Feb 24, 2025 |  |
| Provarity | PreSales Operations Management | $7M | Seed | Dec 09, 2024 |  |
| Figure Eight | Figure Eight is a Human-in-the-Loop machine learning platform to create customized large scale high-quality training data. The platform uses machine learning assisted annotation solutions to create high-quality training data needed by models to work in the real world. They supports a wide range of computer vision and natural language processinguse cases — video object tracking, autonomous vehicles, robotics, predictive maintenance, facial recognition, medical images, aerial and satellite imagery, consumer product detection, content categorization, intelligent chatbots, document transcription, voice assistant training, audio transcription, sentiment analysis, product categorization, and search relevance - and a broad range of industries - automotive, financial services, media and entertainment, retail and e-commerce, technology, agriculture, manufacturing, medical and healthcare, power and utilities, security and surveillance, transportation and travel, and government. Figure Eight platform operates at an unprecedented scale has generated over 10 billion training data labels to power real-world AI applications. Figure Eight was founded in 2008 and is headquartered in California, USA. | $9.3M | Series B | Mar 22, 2011 |  |

5 of 5 investments shown.

## Co-investors
- [Ballistic Ventures](https://shizune.co/investors/profile/ballistic-ventures) — VC Fund, 3 deals together
- [.406 Ventures](https://shizune.co/investors/profile/406-ventures) — VC Fund, 1 deal together
- [Akamai Technologies](https://shizune.co/investors/profile/akamai-technologies) — VC Fund, 1 deal together
- [Bessemer Venture Partners](https://shizune.co/investors/profile/bessemer-venture-partners) — VC Fund, 1 deal together
- [Black Opal Ventures](https://shizune.co/investors/profile/black-opal-ventures) — VC Fund, 1 deal together
- [Blu Venture Investors](https://shizune.co/investors/profile/blu-venture-investors) — VC Fund, 1 deal together

## About Harmony Partners

VC Fund · New York, United States

Harmony Partners is a highly differentiated venture capital firm that makes expansion stage investments in high growth software, internet and tech-enabled companies. By eliminating the typical deal constraints of traditional growth equity firms around minimum check sizes and ownership percentages, Harmony fills a gap in the market. Founded in NewYork City in 2010 and investing globally, our team has deployed more than $1 billion in over 100 technology companies over the past 25 years, including Anaplan, AppDynamics, Alation, Arctic Wolf, E*Trade, Iterable, Klaviyo, Maven Clinic, Natera, Postmates, Priceline, SS&C, Swiggy and UiPath. To learn more, please visit www.harmonyvp.com.

5 contacts available at Harmony Partners.

| Name | Title | Profile |
| --- | --- | --- |
| Clemens Baumgart | Partner | https://shizune.co/investors/profile/clemens-baumgart |
| Daniel Lane | Principal | https://shizune.co/investors/profile/dan-lane-3 |
| Daniel Lane | Principal | https://shizune.co/investors/profile/daniel-lane |
| Gregory F. Eaton | General Partner | https://shizune.co/investors/profile/gregory-f-eaton |
| Mark Lotke | Founder and Managing Partner | https://shizune.co/investors/profile/mark-j-lotke |

## 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
- [Right Side Capital Management](https://shizune.co/investors/profile/right-side-capital-management) — VC Fund

## FAQ

### What does Gregory F. Eaton invest in?

Gregory F. Eaton invests primarily in Software, Internet and Cyber Security startups, most often at Seed and Series A stage. Most of the 5 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 Gregory F. Eaton last invest?

The most recent investment recorded for Gregory F. Eaton closed in Mar 2026. Shizune tracks 5 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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