Peter Sisson

CURIOSITY AND COMPASSION. Peter Sisson’s life was a remarkable blend of entrepreneurial brilliance, deep-seated compassion, and an unwavering commitment to helping others succeed. Over his 60 years, Peter left an indelible mark on the tech industry, founding and growing four successful companies and mentoring countless LGBTQIA+ entrepreneurs. His journey was not just about creating businesses but about making a difference in the lives of those around him.

Peter was born into an environment that fostered curiosity and adventure. His twin brother, Stephen, recalls how Peter’s zest for life was evident from the start. “Even at four years old, he always wanted more—that would play out for the rest of his life,” Stephen shares. While Stephen describes himself as more cautious, Peter was the one who constantly sought challenges, whether it was diving into technology or embracing new adventures. This drive led Peter to explore technology at a young age, disappearing into his room with a Radio Shack computer to write code—a passion that would shape his future.

Peter’s path to entrepreneurship was as dynamic as his personality. After earning a degree in artificial intelligence from Stanford University and an MBA from Dartmouth’s Tuck School of Business, Peter ventured into the corporate world. However, it was clear that his true calling was in building companies. “He had all the pieces of the puzzle to be an entrepreneur,” Stephen recalls. And with the advent of the internet, Peter found the perfect opportunity to launch his ventures.

Peter’s entrepreneurial journey included founding WineShopper.com, Mixonic, Teleo, and Line2—each company pushing the boundaries of technology and consumer experiences. But beyond the accolades and acquisitions, what truly defined Peter was his generosity and his passion for helping others. Chris Davidson, a friend and colleague from StartOut, where Peter volunteered as a mentor, remembers Peter’s immense capacity for giving. “Founders would just be blown away with how he overflowed with love, capacity, kindness, and generosity,” Chris says.

As an Entrepreneur in Residence at StartOut’s Growth Lab, Peter played a crucial role in shaping the future of LGBTQIA+ entrepreneurship. His impact on the community was profound, with every founder he mentored coming away with invaluable insights. “He gave people real functional areas of improvement for their companies,” Chris notes. Peter’s dedication to the next generation of entrepreneurs extended beyond just business advice; he offered guidance that touched on life and values, helping others navigate the complexities of being both a business leader and a member of the LGBTQIA+ community.

LEGACY OF GENEROSITY. Peter’s legacy is also reflected in the personal relationships he nurtured. His brother Stephen highlights how Peter’s life was about more than just business success—it was about living fully and with gusto. “He knew it was cliché, but he often said how nobody on their deathbed says I wished I worked harder. He was always aware of that,” Stephen says. Even as Peter achieved great success, he remained focused on creating a win-win situation for everyone involved. “He was always in it, not solely for himself, but for something bigger,” Stephen adds.

Peter’s life was tragically cut short, but his legacy lives on through the countless lives he touched. His commitment to mentoring, his love for his family, and his passion for innovation have left a lasting impact on the world. As Chris reflects: “Peter left a beautiful legacy, and his presence will continue to inspire those who knew him.”