# Frederick Warren

> Frederick Warren is a Series A investor at Sage Venture Partners backing Mobile and FinTech. See 4 investments, check sizes, portfolio. Updated Aug 2026.

- Type: Angel Investor
- Fund: [Sage Venture Partners](https://shizune.co/investors/profile/sage-venture-partners)
- Location: Newport, United States
- Total investments: 4
- Last investment: Jun 2022
- Lead investor: 0%
- Last updated: Aug 2026
- LinkedIn: https://www.linkedin.com/in/frederick-j-warren-8370a51b

Frederick Warren is a Series A investor at Sage Venture Partners in Newport focused on Mobile and FinTech. Frederick Warren is the owner of Sage Venture Partners. a venture capital firm based in the United States. He co-founded Brentwood Associates before which he was employed at Plainview Capital. At Westland Capital Corporation, he worked as the president and chief executive officer. Warren holds an MBA and an engineering degree from the Universityof Pennsylvania.

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Mobile | 2 | 50% |
| FinTech | 1 | 25% |
| Finance | 1 | 25% |
| Big Data | 1 | 25% |
| Wireless | 1 | 25% |

17 industries tracked in total.

### Stage

| Stage | Investments | Share |
| --- | --- | --- |
| Series A | 3 | 75% |
| Series B | 1 | 25% |

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| FinTron | FinTron is on a mission to make investing, saving, and budgeting accessible, understandable, and doable for the Mobile Generation through our all-in-one investing, and investment education app. We strive to promote the financial freedom of the Mobile-First Generation through better education, accesible financial products, and philanthropicgive-back programs. FinTron Invest was founded in 2019 by Wilder Rumpf (CEO and President) | $6.5M | Series A | Jun 01, 2022 |  |
| Liftoff | Liftoff is a full-service mobile app marketing and retargeting platform that uses post-install data to run true CPA-optimized user acquisition and retention campaigns. With Liftoff, campaigns are optimized to drive actions beyond the install, like booking a hotel, subscribing to a service, or making a purchase. | $5M | Series A | Feb 04, 2015 |  |
| Root Metrics | Root Metrics formally Root Wireless, is the developer of Root Coverageâ„¢ service, cellular network performance mapping created by patent-pending technologies that audit and analyze cellular network and device performance. The Bellevue, WA-based company's products include Root Mobileâ„¢, a network scouting and crowdsourcing applicationthat turns smartphones into network monitoring devices that measure the quality and reliability of cellular voice and data connectivity services, as well as the over-the-air performance of handsets connecting to the networks. Root Wireless, Inc. was incorporated in 2008 and is based in Bellevue, Washington. | $3.3M | Series B | Nov 25, 2009 |  |
| WX Brands | Winery Exchange was founded in 1999. Headquartered in Novato, California, USA, they maintain regional sales offices around the United States and international offices in the United Kingdom, New Zealand and Spain. Of its founding group of three, Peter Byck continues as Winery Exchange's President and CEO and John Crean is an observing member ofthe Board of Directors and an investor.The company was founded with the intent of blending extensive industry expertise with cutting-edge business practices. The result is a dynamic, fast-growing company poised to take advantage of new trends in the beverage alcohol industry. | $9M | Series A | Apr 07, 2000 |  |

4 of 4 investments shown.

## Co-investors
- [Akkadian Ventures](https://shizune.co/investors/profile/akkadian-ventures) — VC Fund, 1 deal together
- [AUA Capital Management](https://shizune.co/investors/profile/aua-capital-management) — VC Fund, 1 deal together
- [Baseline Ventures](https://shizune.co/investors/profile/baseline-ventures) — VC Fund, 1 deal together
- [Connecticut Innovations](https://shizune.co/investors/profile/connecticut-innovations) — VC Fund, 1 deal together
- [Core Ventures](https://shizune.co/investors/profile/core-ventures-group) — VC Fund, 1 deal together
- [Harrison Metal](https://shizune.co/investors/profile/harrison-metal-capital) — VC Fund, 1 deal together

## About Sage Venture Partners

VC Fund · Los Angeles, United States

Sage Venture Partners invests in early and gowth-stage startups across diverse industries. Sage Venture Partners typically invests with a close group of family offices and individuals and provides extensive guidance and management to portfolio companies. The firm backs entrepreneurs with proven track records and strong strategic vision. SageVenture Partners is founded and led by Frederick J. Warren. Before Sage Venture Partners, Mr. Warren co-founded Brentwood Associates, which became a leading venture capital investment firm on the West Coast. In 1984, he initiated and led Brentwood's formal entry into the leveraged buyout business and its evolution as a private equity investment firm.

2 contacts available at Sage Venture Partners.

| Name | Title | Profile |
| --- | --- | --- |
| Frederick Warren | Owner | https://shizune.co/investors/profile/frederick-j-warren |
| Matt Weber | Associate | https://shizune.co/investors/profile/matt-weber |

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## FAQ

### What does Frederick Warren invest in?

Frederick Warren invests primarily in Mobile, FinTech and Finance startups, most often at Series A and Series B stage. Most of the 4 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 Frederick Warren last invest?

The most recent investment recorded for Frederick Warren closed in Jun 2022. Shizune tracks 4 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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