David Stack

Qstream Chief Financial Officer


dave-stackDavid Stack is a chief financial officer with over 20 years of success in leading global financial operations for growing companies, particularly those in the software as a service (SaaS) industry. David is currently the CFO at Qstream, a Boston-based mobile enterprise software company that provides analytics to ignite high performance sales teams. Having supported impressive growth and revenue generation at several startups and established companies, David Stack recently joined the Qstream team to facilitate their continued growth in the emerging sales performance analytics market.

Prior to joining Qstream, David Stack was CFO of Localytics, a Boston based company uniting marketing and analytics for better in-app experiences. Prior to joining Localytics, David was the CFO of inbound marketing and sales software company HubSpot from 2008-2014. During his time as CFO, David directed and developed all financial activities that transformed HubSpot from a $1M revenue run company to a $100M corporation. David helped to secure three rounds of funding and oversee finances of strategic acquisitions and related integrations leading up to HubSpot’s IPO.

Prior to joining HubSpot, David Stack was the vice president of finance at EMC Corporation, a computer data storage company. His primary responsibilities focused on controlling the financial and information system activities in the EMC security division, which accounted for $500M in revenue. Before joining EMC, David worked on the executive team of RSA Security, as VP and in other roles. David was the finance lead for RSA Security during the sale of the company to EMC for $2.3 billion in 2006.

Over the course of his career in accounting and finance, David Stack has overseen a variety of departmental activities and projects, including long and short-term financial planning, general accounting, investor relations, revenue recognition, accounting policy creation, and procurement. His pivotal role at HubSpot gave David additional insights into scaling profitable companies that are looking to make a move for a possible IPO.

In addition to his work as a chief financial officer, David Stack also serves on the board of directors for BrandYourself, a New York based online reputation tool that was featured on the popular show Shark Tank.  David holds a BS in Accounting from Florida Southern College and an MBA from the University of Central Florida. He also completed the prestigious Program for Leadership Development at Harvard Business School.