# Diamondhead Ventures

> Diamondhead Ventures is a VC fund in Menlo Park backing Security and Software. See 9 investments, check sizes, portfolio and contact details. Updated Aug 2026.

- Type: VC Fund
- Location: Menlo Park, United States
- Total investments: 9
- Last investment: Oct 2009
- Lead investor: 0%
- Last updated: Aug 2026
- Website: http://www.dhven.com

Diamondhead Ventures is an early-stage technology venture capital firm investing in start-ups with disruptive innovations.

## Contacts

5 contacts available for Diamondhead Ventures. Shizune tracks 2 team members at Diamondhead Ventures. Sign up free to unlock them: https://app.shizune.co/sign-up/investor-profiles/find-team-emails/diamondhead-ventures?utm_source=investor_profile

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Security | 2 | 22% |
| Software | 2 | 22% |
| Semiconductor | 2 | 22% |
| Network Security | 2 | 22% |
| Internet | 1 | 11% |

13 industries tracked in total.

### Stage

| Stage | Investments | Share |
| --- | --- | --- |
| Funding Round | 3 | 33% |
| Series A | 2 | 22% |
| Series C | 2 | 22% |
| Series B | 1 | 11% |
| Series D | 1 | 11% |

## Team

| Name | Title | Investments | Profile |
| --- | --- | --- | --- |
| David Lane | Co-Founder & MD | 3 | — |
| J. Gerry Purdy | Venture Partner | 0 | — |

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| UPEK | UPEK, Inc., the global leader in biometric fingerprint security solutions, offers integrated end-to-end solutions including comprehensive design & integration services to the world’s leading consumer and industrial products companies. UPEK solutions enable the strongest fingerprint authentication security available and effortless userconvenience. UPEK security solutions are easy to deploy and integrate with existing infrastructure and network architectures. UPEK biometric security products enable a wide range of applications including password replacement for PCs and applications, centralized management for corporate network security, secure mobile transactions, protection of portable data, identity verification for government and military applications, and physical access control. UPEK has been pioneering biometric fingerprint technology since 1996 and shipping product in volume since 1999. UPEK is headquartered near Berkeley, California with offices in Prague, Singapore, Taipei and Tokyo. | $6.2M |  | Oct 01, 2009 |  |
| Nitronex | Specializing in the development and manufacturing of gallium nitride-on-silicon (GaN-on-Si) RF power devices, Nitronex is the global leader in high-performance GaN-on-Si RF power devices.Nitronex develops and manufactures gallium nitride-on-silicon (GaN-on-Si) RF power devices.Nitronex was founded in 1999 by graduates of the wide bandgapprogram at North Carolina State University and is headquartered in Durham, North Carolina. It holds 21 patents with 17 others pending. | $21.8M |  | Jun 19, 2006 |  |
| Reactivity | Reactivity provided technology to secure, accelerate, and manage XML and Web service environments in the enterprises. The company offered XML Infrastructure appliances that were based on hardware combined with the XML operating system; Manager that enabled diverse professionals to define policies and monitor enforcement; Gateway-D, which provideddevelopers and testers with a desktop form factor; and Gatekeeper that offers XML Web services security. The company was founded in 1998 and was based in Belmont, California. It was acquired by Cisco in 2007. | $8.6M |  | Feb 13, 2006 |  |
| Cavium | Cavium Networks designs, develops, and markets semiconductor processors for intelligent and secure networks. Its semiconductor products enable customers to develop networking, wireless, storage, and electronic equipment that are application-aware and content-aware, and securely process voice, video, and data traffic at high speeds. The companysells its products directly or through contract manufacturing organizations and distributors to providers of networking, wireless, storage, and electronic equipment, as well as to original equipment manufacturers primarily in the United States, Japan, Taiwan, and the People’s Republic of China. It has a joint collaboration with Aricent Inc. to provide advanced LTE eNodeB solutions. The company also has collaboration agreements with Atheros Communications Inc. and Design of Systems on Silicon S.A. to offer HD video transmission and distribution to flat panel displays. | $20M | Series D | Dec 22, 2004 |  |
| UPEK | UPEK, Inc., the global leader in biometric fingerprint security solutions, offers integrated end-to-end solutions including comprehensive design & integration services to the world’s leading consumer and industrial products companies. UPEK solutions enable the strongest fingerprint authentication security available and effortless userconvenience. UPEK security solutions are easy to deploy and integrate with existing infrastructure and network architectures. UPEK biometric security products enable a wide range of applications including password replacement for PCs and applications, centralized management for corporate network security, secure mobile transactions, protection of portable data, identity verification for government and military applications, and physical access control. UPEK has been pioneering biometric fingerprint technology since 1996 and shipping product in volume since 1999. UPEK is headquartered near Berkeley, California with offices in Prague, Singapore, Taipei and Tokyo. | $20M | Series A | Mar 17, 2004 |  |
| Cavium | Cavium Networks designs, develops, and markets semiconductor processors for intelligent and secure networks. Its semiconductor products enable customers to develop networking, wireless, storage, and electronic equipment that are application-aware and content-aware, and securely process voice, video, and data traffic at high speeds. The companysells its products directly or through contract manufacturing organizations and distributors to providers of networking, wireless, storage, and electronic equipment, as well as to original equipment manufacturers primarily in the United States, Japan, Taiwan, and the People’s Republic of China. It has a joint collaboration with Aricent Inc. to provide advanced LTE eNodeB solutions. The company also has collaboration agreements with Atheros Communications Inc. and Design of Systems on Silicon S.A. to offer HD video transmission and distribution to flat panel displays. | $18M | Series C | Aug 01, 2003 |  |
| BayPackets | BayPackets' software enables wireless, wireline and cable operators to rapidly bundle and deliver enhanced voice and data services tailored to the needs of their business and consumer customers. Local, long-distance and broadband service providers rely on BayPackets' solutions to profitably expand their market share by efficientlyoperating new and existing network infrastructure via a single point. | $21.7M | Series C | Mar 10, 2003 |  |
| Cavium | Cavium Networks designs, develops, and markets semiconductor processors for intelligent and secure networks. Its semiconductor products enable customers to develop networking, wireless, storage, and electronic equipment that are application-aware and content-aware, and securely process voice, video, and data traffic at high speeds. The companysells its products directly or through contract manufacturing organizations and distributors to providers of networking, wireless, storage, and electronic equipment, as well as to original equipment manufacturers primarily in the United States, Japan, Taiwan, and the People’s Republic of China. It has a joint collaboration with Aricent Inc. to provide advanced LTE eNodeB solutions. The company also has collaboration agreements with Atheros Communications Inc. and Design of Systems on Silicon S.A. to offer HD video transmission and distribution to flat panel displays. | $15.5M | Series B | Apr 24, 2002 |  |
| BayPackets | BayPackets' software enables wireless, wireline and cable operators to rapidly bundle and deliver enhanced voice and data services tailored to the needs of their business and consumer customers. Local, long-distance and broadband service providers rely on BayPackets' solutions to profitably expand their market share by efficientlyoperating new and existing network infrastructure via a single point. |  | Series A | Jul 01, 2000 |  |

9 of 9 investments shown.

## Co-investors
- [Menlo Ventures](https://shizune.co/investors/profile/menlo-ventures) — VC Fund, 3 deals together
- [Blueprint Ventures](https://shizune.co/investors/profile/blueprint-ventures) — VC Fund, 2 deals together
- [Earlybird Venture Capital](https://shizune.co/investors/profile/earlybird-venture-capital) — VC Fund, 2 deals together
- Green Dot Capital — VC Fund, 2 deals together
- Lucent Venture Partners — VC Fund, 2 deals together
- [Sofinnova Investments](https://shizune.co/investors/profile/sofinnova-ventures) — VC Fund, 2 deals together

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- [HTGF (High-Tech Gruenderfonds)](https://shizune.co/investors/profile/high-tech-gr%C3%BCnderfonds) — VC Fund

## FAQ

### What does Diamondhead Ventures invest in?

Diamondhead Ventures invests primarily in Security, Software and Semiconductor startups, most often at Funding Round and Series A stage. Most of the 9 investments tracked by Shizune back companies in United States. The Investment Focus section breaks down every industry, stage and country in the portfolio.

### How do I contact Diamondhead Ventures?

Public channels for Diamondhead Ventures include 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 Diamondhead Ventures?

The team at Diamondhead Ventures includes David Lane (Co-Founder & MD) and J. Gerry Purdy (Venture Partner). 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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