Oak Investment Partners
VC Fund
Greenwich, United States
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.
- Total investments:
- 222
- Last investment:
- Lead investor:
- 27%
- Fund size:
- $2.7B
- Last fund:
Last updated:
For AI agents: llms.txt
Industries Oak Investment Partners invests in
Stages Oak Investment Partners invests in
Countries Oak Investment Partners invests in
Round sizes
Contacts
| Name | Phone | Socials | |
|---|---|---|---|
| See all 7 contacts → | |||
Round size
- Series B
- $4M–$55M
- Series C
- $10M–$75M
Investment Focus
Industry
- Software 33 (15%)
- Internet 27 (12%)
- Telecommunications 19 (9%)
- Wireless 16 (7%)
- Information Technology 16 (7%)
Stage
- Series B 38 (17%)
- Series C 37 (17%)
- Funding Round 34 (15%)
- Series A 25 (11%)
- Series D 21 (9%)
Country
- United States 106 (48%)
- United Kingdom 6 (3%)
- China 3 (1%)
- India 2 (1%)
- Singapore 2 (1%)
Team
| Name | Title | Investments | Links | |
|---|---|---|---|---|
Allan Kwan
Venture Partner
|
Venture Partner | Total investments: 9 | Find email | |
Ed Glassmeyer
General Partner
|
General Partner | Total investments: 7 | Find email | |
Fred Harman
Managing Partner
|
Managing Partner | Total investments: 21 | Find email | |
Brian Dunefsky
Chief Compliance Officer
|
Chief Compliance Officer | Total investments: 0 | Find email | |
Grace Ames
COO and General Partner
|
COO and General Partner | Total investments: 0 | Find email | |
| See all 7 team members → | ||||
Investments
| Company | Description | Round | Links |
|---|---|---|---|
| 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 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 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 | ||
| 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. | $50M / Venture - Series Unknown / Jun 24, 2019 | ||
| FullCircl provides a platform and services with access to company intelligence. They provide a platform for customer-facing channels in B2B financial services. They support online sources for data on markets, organizations, and individuals. They address customer lifecycle challenges facing financial institutions. | $4.6M / Debt Financing / Feb 26, 2019 | ||
| 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 / Venture - Series Unknown / Oct 19, 2018 | ||
| FullCircl provides a platform and services with access to company intelligence. They provide a platform for customer-facing channels in B2B financial services. They support online sources for data on markets, organizations, and individuals. They address customer lifecycle challenges facing financial institutions. | $10.2M / Series C / Aug 20, 2018 | ||
| Solarflare Communications is a computer networking company that specializes in providing neural-class networks, technologies for ultra-scale, and software-defined. It also provides a comprehensive, integrated set of technologies for distributed, ultra-scale, software-defined datacenters.It was founded in 2001 and headquartered in Irvine,California. | Corporate Round / Jun 04, 2018 | ||
| Protean Electric is an automotive technology firm. As the world leader of in-wheel motor technology, we provide a stand-alone electric drive solution with software that enables digital vehicle control and enhances customization. ProteanDrive motors use patented technologies, digital control, and are packaged with a friction brake. Designed towithstand 300,000 km vehicle lifetime, they deliver torque vectoring, 90 degree turn radius, and a digital control platform that can support a range of AI and cloud based services including autonomous EV sensors, digital ABS, vehicle diagnostics and road condition data. ProteanDrive provides opportunities for full EV and Hybrid vehicles in all segments from TaaS, to conventional vehicle programs including heavy trucks. | $40M / Series E / Jun 01, 2018 | ||
| Precision Medicine Group is a specialized services company supporting next generation approaches to drug development and commercialization. Precision provides an integrated infrastructure that supports pharmaceutical and life science companies as they develop new products in the age of precision medicine. | $275M / Private Equity / Dec 19, 2017 | ||
| See all 222 investments → | |||
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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 222 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 $4M–$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 Sep 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.
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