About William Sornsin
William Sornsin is a chief operating officer at RTB Digital.
William Sornsin reports to the SEC as an officer of 2 public companies, including Arena Group (AREN).
William Sornsin first appears on SEC filings in 2016.
Experience
This experience comes from SEC filings. The years are when the filings name William Sornsin in the role, so the role may have started earlier or lasted longer.
AI
Arena Group Holdings, Inc.
Chief Operating Officer
2016 – 2020 · Public company (AREN)
Key Colleagues at Startups
The people William Sornsin works with at each company, as listed on that company's latest Form D.
RTB Digital Inc. · Form D, May 13, 2025
JI
Joseph Lipsey, III
Director
BP
Brock Pierce
Director
JH
James Heckman
Executive officer and director
DB
David Bailey
Director