Our Team

Summerhill is led by three very innovative, passionate and thoughtful partners with over 45 years of combined venture capital experience in the wireless, digital media and information technology sectors. Our team is comprised of senior investment professionals with a diverse mix of operational, technical, financial and investment experience. We have developed a reputation for adding significant value to our portfolio companies and have built a track record of investing in and developing some of North America's most successful emerging growth companies.

Gary Rubinoff Managing Director, Boston/Toronto grubinoff@summerhillvp.com

Gary brings over 17 years of venture investing experience. He focuses on a broad range of opportunities including mobile computing, cloud computing, broadband communications and digital media. More >

Joe Catalfamo Managing Director, Toronto jcatalfamo@summerhillvp.com

Joe brings over 18 years of venture capital investing and a wealth of experience in the areas of business planning, financings, negotiations, IPOs and acquisitions. More >

Will Kohler General Partner, Boston wkohler@summerhillvp.com

Will brings to Summerhill over 8 years of venture investing experience and 3 years of industry experience. He focuses on a broad range of opportunities including software & services, cloud computing and digital media. More >

George Cooney Venture Partner, Boston gcooney@summerhillvp.com

Based in our Boston office, George is focused on developing Summerhill Venture Partners in the entrepreneur community and bringing value to our portfolio companies. More >

Ommer Chohan Chief Financial Officer, Toronto ochohan@summerhillvp.com

Ommer brings to Summerhill over 15 years of experience in finance. More >

Brian Kobus Senior Associate, Toronto bkobus@summerhillvp.com

Brian brings to Summerhill almost 10 years of M&A and Investment experience. More >

Hazel Krishnan Executive Assistant hkrishnan@summerhillvp.com

Leanne Groff Executive Assistant lgroff@summerhillvp.com