# John Marren

> John Marren is a Series A investor at Temasek backing Industrial and Manufacturing. See 1 investments, check sizes, portfolio. Updated Aug 2026.

- Type: Angel Investor
- Fund: [Temasek](https://shizune.co/investors/profile/temasek)
- Location: San Francisco Bay Area, United States
- Total investments: 1
- Lead investor: 0%
- Last updated: Aug 2026
- LinkedIn: http://www.linkedin.com/pub/john-marren/6/1b9/3a4

John Marren is a Series A investor at Temasek in San Francisco Bay Area focused on Industrial and Manufacturing. John W. Marren joined TPG Capital in 2000 as a Partner and leads TPG's technology team.John Marren is currently the Chairman of the Board of MEMC Electronic Materials and serves on the board of directors of Aptina, Avaya, Freescale, and SunGard.From 1996 through 2000, John Marren was a Managing Director at Morgan Stanley, most recently asco-head of the Technology Investment Banking Group. From 1992 to1996, he was a Managing Director and Senior Semiconductor Research Analyst at Alex Brown & Sons.While at Morgan Stanley and Alex Brown & Sons, John Marren was a frequent member of the Institutional Investor All-American Research Team which recognizes the top research analysts on Wall Street.Prior to Alex Brown, John Marren spent eight years in the semiconductor industry working for VLSI Technology and Vitesse Semiconductor.John Marren received his B.S. in Electrical Engineering from the University of California in Santa Barbara.

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Industrial | 1 | 100% |
| Manufacturing | 1 | 100% |
| Semiconductor | 1 | 100% |

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| 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. | $9.5M | Series A |  |  |

1 of 1 investments shown.

## About Temasek

VC Fund · Singapore, Singapore

Temasek Holdings is a lender provider. The company offers debt financing and focuses on transforming economies, increasing middle-income populations, developing comparative advantages, and emerging champions. Financial services, transportation, industrial, consumer, real estate, telecommunications, media, technology, and life sciences are among theindustries served by the firm.

5 contacts available at Temasek.

| Name | Title | Profile |
| --- | --- | --- |
| Beng Teck Ong | Managing Director | https://shizune.co/investors/profile/beng-teck-ong |
| Benoit Valentin | Senior Managing Director EMEA, and Head of Private Equity Fund Investments | https://shizune.co/investors/profile/benoit-valentin |
| David Heng | Joint Head, Consumer; Head, Real Estate; Joint Head, China; Head, Japan & Korea | https://shizune.co/investors/profile/david-heng |
| Eric Bielke | Director | https://shizune.co/investors/profile/eric-bielke |
| John Marren | Senior Managing Director | https://shizune.co/investors/profile/john-marren |

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## FAQ

### What does John Marren invest in?

John Marren invests primarily in Industrial, Manufacturing and Semiconductor startups, most often at Series A stage. Most of the 1 investments tracked by Shizune back companies in United States. The Investment Focus section breaks down every industry, stage and country in the portfolio.

### 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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