# Walden Riverwood Ventures

> Walden Riverwood Ventures is a VC fund backing Software and Semiconductor. See 38 investments, check sizes, portfolio and contact details. Updated Aug 2026.

- Type: VC Fund
- Location: San Francisco, United States
- Total investments: 38
- Last investment: Mar 2021
- Lead investor: 47%
- Last fund: Jul 2018
- Last updated: Aug 2026

Walden Riverwood Ventures is a venture capital fiirm specializing in early stage investments. It seeks to invest globally in core technology companies. Walden Riverwood Ventures & IndusAge Partners combined and are now “WRVI Capital”.

## Contacts

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

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Software | 9 | 24% |
| Semiconductor | 7 | 18% |
| Hardware | 4 | 11% |
| Artificial Intelligence | 4 | 11% |
| Energy | 3 | 8% |

62 industries tracked in total.

### Stage

| Stage | Investments | Share |
| --- | --- | --- |
| Series B | 12 | 32% |
| Series C | 9 | 24% |
| Series A | 8 | 21% |
| Series D | 3 | 8% |
| Seed | 2 | 5% |

7 stages tracked in total.

### Country

| Country | Investments | Share |
| --- | --- | --- |
| United States | 18 | 47% |
| India | 2 | 5% |
| Israel | 2 | 5% |
| Japan | 1 | 3% |

## Team

| Name | Title | Investments | Profile |
| --- | --- | --- | --- |
| Michael Marks | Founding Partner, Co-Founder | 39 | https://shizune.co/investors/profile/michael-e-marks |
| Nicholas Brathwaite | Co-Founder, Partner | 38 | https://shizune.co/investors/profile/nicholas-brathwaite |

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| Calysta | Calysta Energy (www.calystaenergy.com), Menlo Park, CA., is developing a new biological gas-to-liquids™ (BioGTL™) and biological gas-to-chemicals (BioGTC™) technology using methane – an energy-rich component of natural gas – as a new sustainable biological feedstock for high value industrial chemicals and transportation fuels with cost andperformance advantages over current processes. The company is a spinout of DNA2.0, the largest US-based provider of synthetic genes for industrial and academic use. | $39M | Series D | Mar 09, 2021 |  |
| Vayyar | With applications in the automotive, smart home, robotics, retail, RF testing and medical sectors, Vayyar's intelligent sensors can see through walls and objects, tracking movement in real time in all environmental conditions. Its state-of-the-art Radar-on-Chip covers imaging and radar bands from 3-81 GHz, with up to 72 transceivers on eachchip and an integrated high-performance DSP delivering unprecedented levels of accuracy and generating high-resolution 4D point cloud images. Vayyar is developing the next generation of sensing technology that is miniature, affordable and versatile enough to impact everyone's lives. Welcome to a world where intelligent sensing is part of the everyday. | $109M | Series D | Nov 19, 2019 |  |
| Clairvolex | Clairvolex is an IP Solutions company and our delivery model that combines deep IP domain, process innovation and custom-built IP tools are our key differentiators.Our consultative approach embedded with innovative tools and its wide acceptance by our global clientele stands as a testament to it. Our client base spreads across hi-tech and lifesciences industry covering all the diverse streams. Through partnership engagements we support our clients in developing, managing and monetizing their end-to-end patent portfolio and patent assets. With operations in multiple geographies, we have a state of the art infrastructure and a specialist team of engineers, scientists, attorneys and paralegals, trained to deliver high quality customized IP solutions. | $3.5M | Series B | Jun 26, 2019 |  |
| WEKA | WekaIO has built the world's fastest parallel file system, designed to solve the performance challenges in AI deep learning and technical computing. Matrix, WekaIO’s flagship product, leapfrogs legacy storage infrastructures by delivering the highest performance, lowest latency storage at a fraction of the cost or traditional NAS.WekaIO's software provides a seamless hybrid cloud solution between on-premises data centers and the public cloud. WekaIO has customers in several high performance markets including autonomous vehicle AI training, genomics, financial modeling, EDA, software development, satellite imaging and media and entertainment. | $31.7M | Series C | Jan 17, 2019 |  |
| Berkeley Lights | Berkeley Lights is a provider of research and development services using micro-droplet technology intended to fundamentally change the way biological processes are done. The company's services revolutionize how scientists and researchers study the interaction of cells and transform and accelerate cellular therapies, enabling clients to meetthe demands for cell-based processes in biotherapeutic discovery and development, cellular therapy manufacturing, synthetic biology, ag-bio, and other fields. | $95M | Series E | Oct 10, 2018 |  |
| Bossa Nova Robotics | Bossa Nova Robotics is a provider of real-time, on-shelf product data for the global retail industry. Its technology collects terabytes of data that enables the retail ecosystem to optimize the omnichannel shopping experience. With a multidisciplinary team of robotics, computer vision, artificial intelligence, and big data scientists, Bossa Novahas solved the challenges to deploy fully autonomous service robots in busy and crowded environments. Bossa Nova is privately held and is founded in 2005. It is headquartered in San Francisco with offices in Mountain View and Pittsburgh. | $29M | Series C | Jun 21, 2018 |  |
| Innovium | Innovium was founded with a focus on developing and deploying advanced technology that successfully addresses the most challenging issues facing data centers. As a technology-driven company, they pride themselves on creating leading-edge innovation that aims to shatter generally accepted limits, delivering breakthrough results for their customers.The company is backed by leading venture capital firms including Greylock Partners, Walden Riverwood, Capricorn Investment Group, Qualcomm Ventures, S-Cubed Capital, and Redline Capital. | $77M | Series D | Apr 25, 2018 |  |
| Eta Compute | At Eta Compute, by building the most energy-efficient, accurate, and easy-to-deploy edge vision sensors, we help enterprises monitor their resources and optimize health, safety, energy efficiency, and utilization, to make a more productive, sustainable, and safer world for everyone. Our battery-operated AI vision sensors and modules are simple touse and deploy, bringing whole new capabilities to various business segments and serving as a catalyst for innovation. | $8M | Series A | Jan 23, 2018 |  |
| Reviver Auto | Reviver Auto digitally connects cars anywhere, anytime through the Rplate app. It is hard at work on an innovative connected car platform with the potential to connect millions of vehicles to a new class of fully integrated transportation services. Their patent-pending Platform-as-a-Service mobility solution delivers messaging, telematics, andelectronic fee collection functionality to all vehicles on one device. The idea for Reviver Auto was hatched in early 2009 when co-founders Mike Jordan and Neville Boston noticed that while many things in the world around them were changing fast, many of the “simple devices” that each of them takes for granted in their daily lives were not.The two started Reviver Auto with the idea of taking these “simple devices” and reimagining them as connected platforms. Right now the automotive, retail, home, and fitness industries are undergoing radical transformations dominated by the invention of connected, intelligent devices.Reviver Auto is excited to be a part of this revolution with a new connected car platform that will change the way in which vehicles communicate with each other and the world. | $12.5M | Series A | Dec 27, 2017 |  |
| Vayyar | With applications in the automotive, smart home, robotics, retail, RF testing and medical sectors, Vayyar's intelligent sensors can see through walls and objects, tracking movement in real time in all environmental conditions. Its state-of-the-art Radar-on-Chip covers imaging and radar bands from 3-81 GHz, with up to 72 transceivers on eachchip and an integrated high-performance DSP delivering unprecedented levels of accuracy and generating high-resolution 4D point cloud images. Vayyar is developing the next generation of sensing technology that is miniature, affordable and versatile enough to impact everyone's lives. Welcome to a world where intelligent sensing is part of the everyday. | $45M | Series C | Dec 13, 2017 |  |

10 of 38 investments shown.

## Co-investors
- [Intel Capital](https://shizune.co/investors/profile/intel-capital) — VC Fund, 5 deals together
- [Capricorn Investment Group](https://shizune.co/investors/profile/capricorn-investment-group) — VC Fund, 4 deals together
- [Cota Capital](https://shizune.co/investors/profile/cota-capital) — VC Fund, 4 deals together
- [Lucas Venture Group](https://shizune.co/investors/profile/lucas-venture-group) — VC Fund, 4 deals together
- [Battery Ventures](https://shizune.co/investors/profile/battery-ventures) — VC Fund, 3 deals together
- [Greylock](https://shizune.co/investors/profile/greylock) — VC Fund, 3 deals together

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## FAQ

### What does Walden Riverwood Ventures invest in?

Walden Riverwood Ventures invests primarily in Software, Semiconductor and Hardware startups, most often at Series B and Series C stage. Most of the 38 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 Walden Riverwood Ventures?

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 Walden Riverwood Ventures?

The team at Walden Riverwood Ventures includes Michael Marks (Founding Partner, Co-Founder) and Nicholas Brathwaite (Co-Founder, 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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