# Clifford Haas

> Clifford Haas is a Series C investor at Sigma Partners backing Hardware and Manufacturing. See 2 investments, check sizes, portfolio. Updated Aug 2026.

- Type: Angel Investor
- Fund: [Sigma Partners](https://shizune.co/investors/profile/sigma-partners)
- Total investments: 2
- Last investment: Oct 2009
- Lead investor: 50%
- Last updated: Aug 2026

Clifford Haas is a Series C investor at Sigma Partners focused on Hardware and Manufacturing. Cliff has been with Sigma Partners for over 25 years, joining the firm in 1985. Cliff has worked with multiple portfolio companies and combines his prior experience as a consultant and engineer to provide counsel to entrepreneurs on how to build strong businesses. Cliff has been involved with investments in a variety of sectors, focused largely onbusiness software applications, storage, and semiconductor capital equipment.

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Hardware | 1 | 50% |
| Manufacturing | 1 | 50% |
| Professional Services | 1 | 50% |
| Information Technology | 1 | 50% |

### Stage

| Stage | Investments | Share |
| --- | --- | --- |
| Series C | 1 | 50% |
| Series D | 1 | 50% |

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| Nexx Systems | NEXX Systems, Inc. provides processing equipment for wafer-level packaging applications. It offers sputter deposition, electro-deposition plating, and plasma cleaning systems. The company’s systems and technologies focus on flip chip advanced packaging, including wafer bumping, wafer cleaning, photoresist strip, and related technologies. Itselectro-deposition systems are designed for long deposition time processes required in applications, such as gold and solder wafer bumping, redistribution layers, and various MEMS layers. The company’s systems offer processing technology to the areas of compound semiconductors, hard disk drive head manufacturing, and ink jet printing. NEXX Systems has representatives and distributors in the United States, Germany, Italy, France, Switzerland, China, Israel, Korea, Japan, Singapore, and Taiwan. NEXX Systems, Inc. was formerly known as Plasmaquest Astex. NEXX Systems, Inc. was founded in 2001 and is headquartered in Billerica, Massachusetts. | $4M | Series D | Oct 27, 2009 |  |
| Nexx Systems | NEXX Systems, Inc. provides processing equipment for wafer-level packaging applications. It offers sputter deposition, electro-deposition plating, and plasma cleaning systems. The company’s systems and technologies focus on flip chip advanced packaging, including wafer bumping, wafer cleaning, photoresist strip, and related technologies. Itselectro-deposition systems are designed for long deposition time processes required in applications, such as gold and solder wafer bumping, redistribution layers, and various MEMS layers. The company’s systems offer processing technology to the areas of compound semiconductors, hard disk drive head manufacturing, and ink jet printing. NEXX Systems has representatives and distributors in the United States, Germany, Italy, France, Switzerland, China, Israel, Korea, Japan, Singapore, and Taiwan. NEXX Systems, Inc. was formerly known as Plasmaquest Astex. NEXX Systems, Inc. was founded in 2001 and is headquartered in Billerica, Massachusetts. | $10M | Series C | Sep 29, 2005 |  |

2 of 2 investments shown.

## Co-investors
- [Reference Capital SA](https://shizune.co/investors/profile/Reference-Capital-SA) — VC Fund, 2 deals together
- [Enterprise Partners](https://shizune.co/investors/profile/enterprise-partners) — VC Fund, 1 deal together

## About Sigma Partners

VC Fund · Boston, United States

Sigma Partners is a venture capital firm, founded in 1984, that has invested in over a hundred early stage companies and has over $2 billion under management. In 2007, it raised $500 million for its most recent fund, named Sigma Partners 8.

5 contacts available at Sigma Partners.

| Name | Title | Profile |
| --- | --- | --- |
| Clifford Haas | Managing Director | https://shizune.co/investors/profile/clifford-haas |
| Gardner C. Hendrie | Partner | https://shizune.co/investors/profile/gardner-c-hendrie |
| Lawrence G. Finch | Managing Director | https://shizune.co/investors/profile/lawrence-g-finch |
| Wade Woodson | Managing Director | https://shizune.co/investors/profile/wade-woodson |
| Fahri Diner | Managing Director | https://shizune.co/investors/profile/fahri-diner |

## Similar investors

### Similar stage
- [Sequoia Capital](https://shizune.co/investors/profile/sequoia-capital) — VC Fund
- [New Enterprise Associates](https://shizune.co/investors/profile/new-enterprise-associates) — VC Fund
- [Bessemer Venture Partners](https://shizune.co/investors/profile/bessemer-venture-partners) — VC Fund

## FAQ

### What does Clifford Haas invest in?

Clifford Haas invests primarily in Hardware, Manufacturing and Professional Services startups, most often at Series C and Series D stage. Most of the 2 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 Clifford Haas last invest?

The most recent investment recorded for Clifford Haas closed in Oct 2009. Shizune tracks 2 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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