# Catherine Lego

> Catherine Lego is a seed investor at Sandisk (San Francisco) backing Electronics and Manufacturing. See 2 investments, check sizes, portfolio. Updated Aug 2026.

- Type: Angel Investor
- Fund: [Sandisk](https://shizune.co/investors/profile/sandisk)
- Location: San Francisco, United States
- Total investments: 2
- Last investment: Jul 2018
- Lead investor: 50%
- Last updated: Aug 2026
- LinkedIn: https://www.linkedin.com/in/cathy-lego-3b70787

Catherine Lego is a seed investor at Sandisk in San Francisco focused on Electronics and Manufacturing. Catherine Lego served as a Director of the Company from 1989 to 2002 and returned to the Board in May 2004. Since 1992, Catherine Lego has been the sole member of Lego Ventures LLC, an early stage technology consulting firm. Ms. Lego was a General Partner of The Photonics Fund, an early stage venture fund focused on investing in components,modules, and systems companies for the fiber optics telecommunications market from December 1999 to December 2009. She was a General Partner at Oak Investment Partners from 1981 to 1992. Catherine Lego serves as a Director and Chair of the Audit Committee for Lam Research Corporation, a provider of wafer fabrication equipment and services for the semiconductor industry. From October 2004 to May 2008, Catherine Lego served as a Director and Chair of the Audit Committee for WJ Communications, Inc., a public semiconductor company in the wireless communications market. From September 2007 to January 2009, Catherine Lego served as a Director and Chair of the Audit Committee of StrataLight Communications, Inc., a private company, which sells optical transport equipment. Catherine Lego joined the Board of Cosworth Group, a private United Kingdom-based precision engineering products and services company in March 2011. In 2013, Catherine Lego joined the Board of Directors for Fairchild Semiconductor serving on its Nominating and Governance, and Compensation Committees. She received a BA from Williams College and an MS in Accounting from the New York University Stern School of Business. She has previously practiced as a Certified Public Accountant with Coopers and Lybrand.

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Electronics | 1 | 50% |
| Manufacturing | 1 | 50% |
| Semiconductor | 1 | 50% |
| Machine Learning | 1 | 50% |
| Predictive Analytics | 1 | 50% |

6 industries tracked in total.

### Stage

| Stage | Investments | Share |
| --- | --- | --- |
| Seed | 1 | 50% |
| Series A | 1 | 50% |

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| StreamMosaic | StreamMosaic was acquired by PDF Solutions in 2019 |  | Seed | Jul 25, 2018 |  |
| Tsunami Optics | Tsunami Optics Inc. develops and manufactures fiber-optic components and modules, including coarse wavelength division multiplexing (CWDM) modules, micro-lithographic optics, and micro-optic components. | $3.2M | Series A | May 09, 2000 |  |

2 of 2 investments shown.

## Co-investors
- [Startup Capital Ventures](https://shizune.co/investors/profile/startup-capital-ventures) — VC Fund, 1 deal together

## About Sandisk

VC Fund · Milpitas, United States

SanDisk is a multinational corporation that designs, develops, manufactures, and markets data storage solutions in the United States and internationally.The company offers removable cards, which are used in various applications and consumer devices, including digital cameras, camcorders, smartphones, tablets, and e-readers under the SanDiskUltra, SanDisk Extreme, and SanDisk Extreme PRO brands; and embedded products that are used in mobile phones, tablets, notebooks, and other portable and wearable devices as well as in automotive and connected home applications under the brand name, iNAND.The company also provides solid state drives (SSDs) for client computing applications, including desktop and notebook computers, tablets, and other computing devices; and enterprise SSD solutions as well as universal serial bus flash drives for use in the computing and consumer markets. In addition, the company offers digital media players under the Sansa brand; wireless media and flash drive products under the SanDisk Connect brand; and memory wafers and components.SanDisk sells its products directly and through distributors to original equipment manufacturers, system integrators, and resellers as well as consumer electronics stores, office superstores, mobile phone stores, mass merchants, e-commerce retailers, catalog and mail order companies, drug stores, supermarkets, convenience stores, and kiosks.SanDisk was founded in 1988 and is headquartered in Milpitas, California.

5 contacts available at Sandisk.

| Name | Title | Profile |
| --- | --- | --- |
| Catherine Lego | Member of the Board of Director | https://shizune.co/investors/profile/catherine-lego |
| Eli Harari | Chairman & Founder | https://shizune.co/investors/profile/eli-harari |
| Atsuyoshi Koike | Senior Vice President | https://shizune.co/investors/profile/atsuyoshi-koike |
| Janet George | Chief Data Officer | https://shizune.co/investors/profile/janet-george-a255 |
| Netanel Nutman | Sr. QA Manager SDK and Software | https://shizune.co/investors/profile/netanel-nutman |

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## FAQ

### What does Catherine Lego invest in?

Catherine Lego invests primarily in Electronics, Manufacturing and Semiconductor startups, most often at Seed and Series A 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 Catherine Lego last invest?

The most recent investment recorded for Catherine Lego closed in Jul 2018. 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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