David Kieselstein joined MidOcean in January 2018. Mr. Kieselstein provides operating support for MidOcean’s platform, and serves on the board of three MidOcean portfolio companies. Prior to this role he served as Chairman of MidOcean’s Executive Board.   

From 2012 to 2017 Mr. Kieselstein served as CEO of Penton, a former MidOcean portfolio company and the largest privately held professional information services company in North America. After joining the company in early 2012, he was instrumental in driving the rapid transformation of Penton via both core operating improvement, new product launches and strategic acquisitions. Penton was acquired by Informa PLC in November 2016 for $1.6 billion.

Prior to leading Penton, Mr. Kieselstein served as Chief Executive Officer of TNS NA, a market research insights division of WPP.  During his tenure at TNS, he executed on a full transformation of the company’s operations.

From 2006 to 2008, Mr. Kieselstein led Dun & Bradstreet’s Small Business Division, the company’s largest and fastest growing division.  While at Dun & Bradstreet, Mr. Kieselstein integrated three distinct operations into a single, customer-centric business unit, and he launched several new product suites that accelerated overall performance.  

Prior to Dun & Bradstreet, Kieselstein served in a range of key leadership roles at Time Warner, including Chief Executive of the Parenting Media Group and the Personal Finance Media Group, as well as head of Time Inc.’s centralized direct marketing and database division.

  • Binghamton University, B.A. Economics
  • Northwestern University, Kellogg Graduate School of Management, M.B.A., Served on Alumni Board

Current and Prior MidOcean Boards

David Kieselstein
Executive Board