David Schellhase has been Entrepreneur-in-Residence at Ballistic Ventures, a venture capital firm dedicated to cybersecurity innovation, since July 2025. From November 2022 to January 2025, Mr. Schellhase was Of Counsel at Sullivan & Cromwell LLP, a global law firm, where he advised on a range of technology-focused corporate legal matters. Mr. Schellhase has served as General Counsel at several publicly-traded companies, most recently at Slack Technologies, Inc., a provider of cloud-based collaboration tools, from December 2016 to August 2021. He served as General Counsel at Groupon, Inc. from June 2011 to January 2014, and at Salesforce, Inc. from July 2002 to May 2011. Mr. Schellhase served as Chief Operating Officer at Honest Work Corporation, a software company, from February 2015 until its acquisition by Twitter, Inc. in April 2016. He has also been an adjunct lecturer in the School of Management Science and Engineering at Stanford University.