• Rudina Seseri

    Founder and Managing Partner


  • Rick Grinnell

    Founder and Managing Partner


  • Sarah Fay

    Managing Director


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Rudina Seseri

Founder and Managing Partner


With over 15 years of investing and transactional experience, Rudina has led technology investments and acquisitions in startup companies in the fields of robotics, Internet of Things (IoT), SaaS marketing technologies and digital media. Rudina’s portfolio investments include Talla, Celtra, CrowdTwist, Jibo and SocialFlow.

Rudina has been appointed by the Dean of the Harvard Business School (HBS) for a fourth consecutive year to serve as Entrepreneur-In-Residence for the Business School and as Executive-In-Residence for Harvard University’s innovation-Lab. She is also a Member of the Business Leadership Council of Wellesley College.

Rudina also serves as Advisor for L’Oreal USA Women in Digital, as Director on the Board of the Massachusetts Innovation and Technology Exchange (MITX) and on the Board of Overseers for Boston Children’s Hospital. She is a 2014 Women to Watch honoree by Mass High Tech and a 2011 Boston Business Journal 40-under-40 honoree for her professional accomplishments and community involvement. She graduated magna cum laude from Wellesley College with a BA in Economics and International Relations and with an MBA from the Harvard Business School (HBS). She is a member of Phi Beta Kappa and Omicron Delta Epsilon honor societies.


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Sarah Fay

Managing Director


Sarah Fay has more than 20 years of experience in the marketing services industry, with a track record of leveraging technology to deliver groundbreaking new models for advertising and media. In her role as Managing Director at Glasswing Ventures, Sarah leads and evaluates investments in early stage AI-powered companies. Her prior investments include X+1, Namely, Mogul, Mavrck, Evidon, Tick/r, TVision Insights and Humon.

Sarah has served as Independent Director on the Boards of public and private technology and digital media companies such as Celtra, SocialFlow, The Street (Nasdaq:TST), Women’s Marketing, Inc. (acquired by Stephens Inc.), and [X+1] (acquired by Rocket Fuel). She served as CEO of Aegis Media North America, a media and digital marketing communications company, where she was also responsible for launching and growing a significant part of that business during her eleven-year tenure. Previously, Sarah served as President of Carat US, and Isobar US, where she was tasked with the integration of digital and traditional media services.

Sarah’s contributions to the broader community include serving on the Executive Board of the Ad Club of Boston, as Director on the Board of The Massachusetts Innovation and Technology Exchange (MITX) and as Board Advisor to Advertiser Perceptions. She is a Board Advisor to Adelphic Mobile, clypd, Colspace and Viral Gains. Sarah earned a BA in English from the University of Vermont and has received over 30 accolades and awards for her accomplishments such as “Media All Star” (AdWeek), “Top 100 Most Influential People in Media (Media Post) and “Fast 50” (Fast Company).


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Rick Grinnell

Founder and Managing Partner


As a venture capitalist and seasoned operator, Rick has invested in some of the most dynamic companies in security, enterprise infrastructure and storage. During his 15 years of venture capital experience, most recently as co-founder and Managing Director of Fairhaven Capital, he has led investments and served on the board of directors for companies such as EqualLogic (acquired by Dell), Prelert (acquired by Elastic), Pwnie Express, Resilient Systems (acquired by IBM), Trackvia and VeloBit (acquired by Western Digital).

He is also active with various entrepreneurial programs at the Massachusetts Institute of Technology (MIT), Harvard and Tufts Universities, and is a frequent judge at MassChallenge. Rick’s contributions to the broader community include serving as a member of the Board of Directors of Big Brothers Big Sisters of Massachusetts Bay, as Vice Chairman of the Board of Overseers at the Museum of Science in Boston, and as a member of the Educational Council at MIT.

Rick has been recognized by the New England Venture Network with the Community Leadership Award for his philanthropic work and contribution to the community. Rick earned BS and MS degrees in Electrical Engineering from MIT and an MBA from HBS.


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