# Summerhill Venture Partners

> Summerhill Venture Partners is a VC fund backing Software and Mobile. See 20 investments, round sizes, portfolio and contact details. Updated Aug 2026.

- Type: VC Fund
- Location: Toronto, Canada
- Total investments: 20
- Last investment: Sep 2015
- Lead investor: 20%
- Last updated: Aug 2026
- LinkedIn: https://www.linkedin.com/company/summerhill-venture-partners
- Website: http://www.summerhillvp.com

Summerhill Venture Partners is an early-stage venture capital firm focused on the wireless, digital media, and IT sectors. It was founded in 1993 and is headquartered in Ontario, Canada.

## Contacts

5 contacts available for Summerhill Venture Partners. Shizune tracks 4 team members at Summerhill Venture Partners. Sign up free to unlock them: https://app.shizune.co/sign-up/investor-profiles/find-team-emails/summerhill-venture-partners?utm_source=investor_profile

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Software | 7 | 35% |
| Mobile | 3 | 15% |
| Telecommunications | 3 | 15% |
| Enterprise Software | 3 | 15% |
| SaaS | 2 | 10% |

27 industries tracked in total.

### Stage

| Stage | Investments | Share |
| --- | --- | --- |
| Series B | 6 | 30% |
| Series A | 4 | 20% |
| Series C | 4 | 20% |
| Series D | 2 | 10% |
| Funding Round | 1 | 5% |

### Country

| Country | Investments | Share |
| --- | --- | --- |
| Canada | 6 | 30% |
| United States | 3 | 15% |

## Team

| Name | Title | Investments | Profile |
| --- | --- | --- | --- |
| Gary Rubinoff | Managing Partner | 11 | https://shizune.co/investors/profile/gary-rubinoff |
| Hazel Krishnan | Executive Assistant | 0 | https://shizune.co/investors/profile/hazel-krishnan |
| Joe Catalfamo | Managing Partner | 10 | https://shizune.co/investors/profile/joe-catalfamo |
| Lara Frendjian | Controller | 0 | https://shizune.co/investors/profile/lara-frendjian |

## Investments

| Company | Description | Round size | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| ScribbleLive | ScribbleLive is a content cloud provider that helps companies manage the lifecycle of their content. It provides global brands with the services and solutions they need to create premium content at scale. The company's managed services provide clients with program and campaign coverage including dashboards and program reporting. Its servicesoffered includes content strategy, creative services, implementation, integration, and IT support. ScribbleLive was founded in 2008 and is headquartered in Toronto, Ontario. | $25.6M | Series D | Sep 23, 2015 |  |
| ScribbleLive | ScribbleLive is a content cloud provider that helps companies manage the lifecycle of their content. It provides global brands with the services and solutions they need to create premium content at scale. The company's managed services provide clients with program and campaign coverage including dashboards and program reporting. Its servicesoffered includes content strategy, creative services, implementation, integration, and IT support. ScribbleLive was founded in 2008 and is headquartered in Toronto, Ontario. | $12M | Series C | Oct 02, 2014 |  |
| BLINQ Networks | BLINQ Networks is the pioneer in developing next-generation non-line-of sight (NLOS) wireless backhaul products for compact base stations that enable wireless carriers to address the growth in demand for capacity. BLINQ is funded by highly regarded US and Canadian venture capital firms with strong investment track record in wireless technologiesand solutions. Their management team has a proven record in building high-growth businesses in the wireless industry with companies that include Andrew, Flarion and Qualcomm. BLINQ's core engineering team comes from Nortel Networks where they were well recognized for developing innovative, state of the art and cost effective wireless systems that have been deployed worldwide. They are set to make a large impact in the wireless industry at a critical inflection point where the mobile Internet enabled by smart phones and mobile computing devices are driving data usage ever higher. | $15.1M | Series B | Sep 08, 2014 |  |
| ScribbleLive | ScribbleLive is a content cloud provider that helps companies manage the lifecycle of their content. It provides global brands with the services and solutions they need to create premium content at scale. The company's managed services provide clients with program and campaign coverage including dashboards and program reporting. Its servicesoffered includes content strategy, creative services, implementation, integration, and IT support. ScribbleLive was founded in 2008 and is headquartered in Toronto, Ontario. | $5.9M | Series B | Jun 19, 2013 |  |
| BLINQ Networks | BLINQ Networks is the pioneer in developing next-generation non-line-of sight (NLOS) wireless backhaul products for compact base stations that enable wireless carriers to address the growth in demand for capacity. BLINQ is funded by highly regarded US and Canadian venture capital firms with strong investment track record in wireless technologiesand solutions. Their management team has a proven record in building high-growth businesses in the wireless industry with companies that include Andrew, Flarion and Qualcomm. BLINQ's core engineering team comes from Nortel Networks where they were well recognized for developing innovative, state of the art and cost effective wireless systems that have been deployed worldwide. They are set to make a large impact in the wireless industry at a critical inflection point where the mobile Internet enabled by smart phones and mobile computing devices are driving data usage ever higher. | $10M | Series B | Sep 19, 2012 |  |
| Jumptap | Jumptap is a mobile ad network and the leader in targeted mobile advertising. Reaching 107 million mobile users in the U.S. and 156 million mobile users worldwide, Jumptap uses its extensive technology portfolio, as well as industry-first partnerships with third-party data providers, to understand mobile audiences better than any other adnetwork and provide intelligent targeting with scale. Through its large network of premium publishers and apps, and constant campaign optimization, Jumptap delivers the best ROI for advertisers and highest yield for publishers and developers. Jumptap has pioneered mobile advertising privacy standards and is committed to unlocking mobile opportunities for all parties through its ongoing industry research, such as its Understanding Mobile Audience series and monthly MobileSTAT reports. | $27.5M |  | Jul 02, 2012 |  |
| ScribbleLive | ScribbleLive is a content cloud provider that helps companies manage the lifecycle of their content. It provides global brands with the services and solutions they need to create premium content at scale. The company's managed services provide clients with program and campaign coverage including dashboards and program reporting. Its servicesoffered includes content strategy, creative services, implementation, integration, and IT support. ScribbleLive was founded in 2008 and is headquartered in Toronto, Ontario. | $2.9M | Series A | Nov 10, 2011 |  |
| Jumptap | Jumptap is a mobile ad network and the leader in targeted mobile advertising. Reaching 107 million mobile users in the U.S. and 156 million mobile users worldwide, Jumptap uses its extensive technology portfolio, as well as industry-first partnerships with third-party data providers, to understand mobile audiences better than any other adnetwork and provide intelligent targeting with scale. Through its large network of premium publishers and apps, and constant campaign optimization, Jumptap delivers the best ROI for advertisers and highest yield for publishers and developers. Jumptap has pioneered mobile advertising privacy standards and is committed to unlocking mobile opportunities for all parties through its ongoing industry research, such as its Understanding Mobile Audience series and monthly MobileSTAT reports. | $20M |  | Apr 01, 2011 |  |
| BLINQ Networks | BLINQ Networks is the pioneer in developing next-generation non-line-of sight (NLOS) wireless backhaul products for compact base stations that enable wireless carriers to address the growth in demand for capacity. BLINQ is funded by highly regarded US and Canadian venture capital firms with strong investment track record in wireless technologiesand solutions. Their management team has a proven record in building high-growth businesses in the wireless industry with companies that include Andrew, Flarion and Qualcomm. BLINQ's core engineering team comes from Nortel Networks where they were well recognized for developing innovative, state of the art and cost effective wireless systems that have been deployed worldwide. They are set to make a large impact in the wireless industry at a critical inflection point where the mobile Internet enabled by smart phones and mobile computing devices are driving data usage ever higher. | $7.4M | Series A | Feb 07, 2011 |  |
| Sonian | Sonian is a pure public cloud information archiving company, providing a service that is easy, flexible, actionable, and reliable for OEM partners and their end customers. Sonian allows companies to preserve, analyze, and access their electronic communications for legal, regulatory, and continuity purposes while gaining organizational insights.More than 25,000 customers in 43 countries trust Sonian’s secure proprietary platform to retain, retrieve, and surface critical data and protect intellectual property.Founded in 2007, Sonian realized that companies were struggling to manage Big Data. As a result, CTO and Founder Greg Arnette recognized earlier than most that there was an enormous opportunity to use the emerging public cloud to solve these problems. Since that time, Sonian has pioneered cutting-edge cloud technologies to protect and provide value for its partners and customers. This has led to many innovations in everything from managing cloud systems and aggregating data to extracting value from and accessing information. | $9M | Series B | Dec 08, 2010 |  |

10 of 20 investments shown.

## Co-investors
- [General Catalyst](https://shizune.co/investors/profile/general-catalyst-partners) — VC Fund, 6 deals together
- [Export Development Canada](https://shizune.co/investors/profile/export-development-canada) — VC Fund, 3 deals together
- [Georgian](https://shizune.co/investors/profile/georgian-partners) — VC Fund, 3 deals together
- [Valhalla Partners](https://shizune.co/investors/profile/valhalla-partners) — VC Fund, 3 deals together
- [AllianceBernstein](https://shizune.co/investors/profile/alliancebernstein) — VC Fund, 2 deals together
- [BDC Venture Capital](https://shizune.co/investors/profile/bdc-venture-capital) — VC Fund, 2 deals together

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## FAQ

### What does Summerhill Venture Partners invest in?

Summerhill Venture Partners invests primarily in Software, Mobile and Telecommunications startups, most often at Series B and Series A stage. Most of the 20 investments tracked by Shizune back companies in Canada. The Investment Focus section breaks down every industry, stage and country in the portfolio.

### How do I contact Summerhill Venture Partners?

Public channels for Summerhill Venture Partners include LinkedIn 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 Summerhill Venture Partners?

The team at Summerhill Venture Partners includes Gary Rubinoff (Managing Partner), Hazel Krishnan (Executive Assistant) and Joe Catalfamo (Managing Partner). 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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