Dave Simmons was the SVP of innovation at UmiGen Technologies. He had a wife called Katherine and a daughter called Avalon. According to Evan Cross, the Simmons family lived in Whistler in the winter and Muskoka in the summer.
In December 2011 - January 2012, Dave Simmons was meant to have a meeting with Evan Cross over $26 million which Dave apparently intended to give to Cross Photonics, but Angelika Finch postponed the meeting by a week as she knew Evan would forget. (The New World (New World Episode 1.1))