# Oak Investment Partners

> Oak Investment Partners is a VC fund backing Software and Internet. See 210 investments, check sizes, portfolio and contact details. Updated Aug 2026.

- Type: VC Fund
- Location: Greenwich, United States
- Total investments: 210
- Last investment: Aug 2021
- Lead investor: 26%
- Last updated: Aug 2026
- LinkedIn: http://www.linkedin.com/company/oak-investment-partners
- X (Twitter): http://twitter.com/OakVC
- Website: http://oakinv.com
- Facebook: https://www.facebook.com/Oak-Investment-Partners-292565877489017

Oak Investment Partners is a multi-stage venture capital and private equity firm. Oak focuses on high-growth opportunities in the Information Technology, Internet and Consumer, Financial Services Technology, Healthcare Information and Services, and Clean Energy sectors. It is specialized in investments in buyouts, spinouts, growth equity,mid-to-late stage financings to private businesses, and PIPE investments to public companies. It generally, targets investments between $10 million and $150 million.Since 1978, the firm has invested $9 billion in over 525 companies around the world, earning the trust of entrepreneurs with a senior team that delivers steady guidance, deep domain expertise and a consistent investment philosophy.The firm also specializes in startup investments, emerging growth, recapitalization, industry consolidation. It invests in wireless communications, information technology, enterprise software and services, software outsourced services, broadband and consumer Internet, digital media and new media, semiconductors, financial services information technology, healthcare services, clean energy, and consumer retail and restaurants sectors.The firm primarily invests in the United States with selected investments in Europe, Israel, India, South Korea, and China. Oak Investment Partners was founded in 1978 and is based in Greenwich, Connecticut with additional offices in Norwalk, Connecticut, Palo Alto, California, and Minneapolis, Minnesota.

## Contacts

5 contacts available for Oak Investment Partners. Shizune tracks 7 team members at Oak Investment Partners. Sign up free to unlock them: https://app.shizune.co/sign-up/investor-profiles/find-team-emails/oak-investment-partners?utm_source=investor_profile

## Round sizes

| Stage | Round size |
| --- | --- |
| Series B | $5.5M–$55M |
| Series C | $10M–$75M |

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Software | 33 | 16% |
| Internet | 27 | 13% |
| Telecommunications | 19 | 9% |
| Wireless | 16 | 8% |
| Mobile | 15 | 7% |

164 industries tracked in total.

### Stage

| Stage | Investments | Share |
| --- | --- | --- |
| Series B | 38 | 18% |
| Series C | 36 | 17% |
| Funding Round | 36 | 17% |
| Series A | 25 | 12% |
| Series D | 21 | 10% |

12 stages tracked in total.

### Country

| Country | Investments | Share |
| --- | --- | --- |
| United States | 103 | 49% |
| United Kingdom | 6 | 3% |
| China | 3 | 1% |
| India | 2 | 1% |
| Singapore | 2 | 1% |

12 countries tracked in total.

## Team

| Name | Title | Investments | Profile |
| --- | --- | --- | --- |
| Allan Kwan | Venture Partner | 9 | https://shizune.co/investors/profile/allan-kwan |
| Ed Glassmeyer | General Partner | 7 | https://shizune.co/investors/profile/ed-glassmeyer |
| Fred Harman | Managing Partner | 21 | https://shizune.co/investors/profile/fred-harman |
| Scot Jarvis | Venture Partner | 8 | https://shizune.co/investors/profile/scot-jarvis |
| Brian Dunefsky | Chief Compliance Officer | 0 | https://shizune.co/investors/profile/brian-dunefsky-e8a6 |

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| Airspan Networks | Airspan Networks is a global provider of 4G broadband wireless systems and solutions that deliver high-speed data, voice, and multimedia services. Airspan’s products serve operators and vertical markets such as smart utilities, transportation, and public safety around the world in both licensed and unlicensed frequency bands covering from 700MHz upto 6GHz. Its products have been deployed in over 100 countries by 500 operators, 100 of which use Airspan’s 4G products.Airspan has a unique combination of in-house skills addressing the LTE, WiMAX, Wi-Fi, and VoIP technologies and develops industry-leading products by combining these technologies in innovative ways in order to deliver new and advanced solutions. Airspan offers a comprehensive range of products to meet the connectivity requirements of a wide variety of applications. With a pioneering suite of 4G radio access network (RAN) products, Airspan delivers first-ever solutions to bridge connectivity gaps, provide improved end-user personal broadband experiences, and connect a myriad of vertical market organizations to reliable, robust 4G broadband.Airspan was founded in 1992 and is headquartered in Boca Raton, Florida. | $75M | Post-IPO Equity | Aug 13, 2021 |  |
| NextNav | NextNav operates a platform intended to offer indoor location services and applications. Its platform offers location-enabling technology with carrier-grade reliability for use in buildings and urban areas where satellite-based geographical positioning service signals cannot reach, enabling clients to avail urban and indoor positioning for publicsafety and commercial applications. | $120M | Series E | Jan 15, 2020 |  |
| SmartDrive Systems | SmartDrive Systems gives fleets and drivers unprecedented driving performance insight and analysis, helping save fuel, expenses and lives. Its video analysis, predictive analytics and personalized performance program help fleets improve driving skills, lower operating costs and deliver significant ROI. With an easy-to-use managed service, fleetsand drivers can access and self-manage driving performance anytime, anywhere. The company has compiled the world's largest storehouse of more than 70 million analyzed risky-driving events. SmartDrive Systems is based in San Diego, Calif., and employs more than 400 people worldwide. | $90M | Private Equity | Sep 12, 2019 |  |
| Sovrn | Sovrn offers products and services to tens of thousands of online publishers that help them grow, operate their business, understand their readership, and manage consumer data. Sovrn is dedicated to helping content creators do more of what they love, and less of what they don’t.The company is headquartered in Boulder, Colorado with offices in SanFrancisco, New York, and London. | $26.5M |  | Oct 19, 2018 |  |
| FullCircl | DueDil is the largest source of free private company information in the UK and Ireland.DueDil enables companies to benefit from the richest source of private company information, on a platform which runs alongside existing processes to help drive automation and enable more informed decision making. From sizing your market and on-boarding newcustomers, to automating your compliance checks on the businesses that you deal with, DueDil is the end-to-end solution companies need to transform their on-boarding process.Founded by entrepreneur Damian Kimmelman and launched in April 2011, DueDil is headquartered in London, UK. It’s backed by Passion Capital, Jonty Hurwitz, Federico Pirzio-Biroli, Sherry Coutu, and Tom Hulme.DueDil has been shortlisted for two Guardian Digital Innovation 2012 awards, was a finalist at the TechCrunch Europas, winner of the GeeknRolla startup competition, and has been featured in publications such as the Telegraph, TechCrunch, the FT, Wired, The Guardian, GigaOm and The Wall Street Journal.Along with companies such as Adobe, LinkedIn, and Thomson Reuters, DueDil was named as one of 31 companies expected to have an important impact on the information industry in 2012 by leading market research firm Outsell Inc, and the UK government's Cabinet Office transparency team has cited DueDil as a business providing innovative services using open data, in Deloitte’s ‘Open data: Driving growth, ingenuity and innovation’ report. | $10.5M | Series C | Aug 20, 2018 |  |
| FullCircl | DueDil is the largest source of free private company information in the UK and Ireland.DueDil enables companies to benefit from the richest source of private company information, on a platform which runs alongside existing processes to help drive automation and enable more informed decision making. From sizing your market and on-boarding newcustomers, to automating your compliance checks on the businesses that you deal with, DueDil is the end-to-end solution companies need to transform their on-boarding process.Founded by entrepreneur Damian Kimmelman and launched in April 2011, DueDil is headquartered in London, UK. It’s backed by Passion Capital, Jonty Hurwitz, Federico Pirzio-Biroli, Sherry Coutu, and Tom Hulme.DueDil has been shortlisted for two Guardian Digital Innovation 2012 awards, was a finalist at the TechCrunch Europas, winner of the GeeknRolla startup competition, and has been featured in publications such as the Telegraph, TechCrunch, the FT, Wired, The Guardian, GigaOm and The Wall Street Journal.Along with companies such as Adobe, LinkedIn, and Thomson Reuters, DueDil was named as one of 31 companies expected to have an important impact on the information industry in 2012 by leading market research firm Outsell Inc, and the UK government's Cabinet Office transparency team has cited DueDil as a business providing innovative services using open data, in Deloitte’s ‘Open data: Driving growth, ingenuity and innovation’ report. | $4.3M | Series B | Sep 12, 2017 |  |
| Gazillion, Inc. | Gazillion Entertainment, we develop, publish and operate diverse games on many platforms. Our goal: To build breakthrough experiences featuring world-class brands and original franchises, superior production quality and unmatched gameplay. Gazillion is headquartered in Foster City, CA. |  | Series C | Jul 01, 2017 |  |
| Brit + Co | Brit + Co is a media company that inspires, educates, and entertains real women with a creative spirit. Founded in late 2011 by Brit Morin, Brit + Co has become one of the largest digital media companies for women. Brit + Co now reaches an engaged community of over 125 million online and across platforms. They have garnered tens of millions ofvideo views and produce over 100 pieces of content every day to keep up with everything their audience is up to.As a digital-first company, they have an innate understanding of how the online connection to offline. That’s why, in addition to their website, brit.co, their free app, and their presence across social channels, they extend their reach to experiences. | $15M | Series C | May 18, 2017 |  |
| nLIGHT | nLIGHT is a technology company that manufactures next-generation fiber lasers based on the industry-leading diode and fiber technology and vertically integrated global operations. Primary end markets are industrial technology, microfabrication, defense, and medical. The company's semiconductor lasers are the industry’s brightest and operateat unique wavelengths and power combinations. Their high-power continuous wave fiber lasers provide significant advantages over legacy fiber lasers for programmability, serviceability, and reliability. They engage with customers early in the design cycle and use a platform approach to product development to optimize semiconductor and fiber laser solutions to meet customer requirements.nLIGHT was founded in 2000 and is headquartered in Hillsboro, Oregon. | $25.8M | Series G | May 10, 2017 |  |
| MobiTV | MobiTV delivers live and on-demand video to any screen, connecting media reliably and securely anytime, anywhere, on any device. The company’s end-to-end platform delivers a true TV everywhere experience that helps service providers reduce time to market and control costs associated with the deployment and operation of high concurrency, multipleplatform services. MobiTV’s connected media solutions solve the complexity of delivering video across networks, operating systems, and devices while managing associated rights. The company efficiently optimizes for network conditions to deliver multiscreen media services that center on empowering the viewer. MobiTV’s connected media solutions are tailored for IPTV operators, as well as mobile TV and over-the-top customers including AT&T, Deutsche Telekom, Sprint, T-Mobile, TELUS, US Cellular, and Verizon among others. | $21M |  | Feb 21, 2017 |  |

10 of 210 investments shown.

## Co-investors
- [Venrock](https://shizune.co/investors/profile/venrock) — VC Fund, 20 deals together
- [Meritech Capital Partners](https://shizune.co/investors/profile/meritech-capital-partners) — VC Fund, 18 deals together
- [Accel](https://shizune.co/investors/profile/accel) — VC Fund, 16 deals together
- [New Enterprise Associates](https://shizune.co/investors/profile/new-enterprise-associates) — VC Fund, 11 deals together
- [Menlo Ventures](https://shizune.co/investors/profile/menlo-ventures) — VC Fund, 10 deals together
- [Goldman Sachs](https://shizune.co/investors/profile/goldman-sachs) — VC Fund, 9 deals together

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## FAQ

### What does Oak Investment Partners invest in?

Oak Investment Partners invests primarily in Software, Internet and Telecommunications startups, most often at Series B and Series C stage. Most of the 210 investments tracked by Shizune back companies in United States. The Investment Focus section breaks down every industry, stage and country in the portfolio.

### What is Oak Investment Partners's check size?

Oak Investment Partners typically joins rounds of $5.5M–$55M at Series B and $10M–$75M at Series C. These ranges are 10th–90th percentile round sizes calculated from confirmed public funding rounds, so they are a realistic guide to the rounds Oak Investment Partners participates in.

### How do I contact Oak Investment Partners?

Public channels for Oak Investment Partners include LinkedIn, X (Twitter) and the website linked on this profile. 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 Oak Investment Partners?

The team at Oak Investment Partners includes Allan Kwan (Venture Partner), Ed Glassmeyer (General Partner) and Fred Harman (Managing Partner), among 7 team members tracked by Shizune. 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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