Gary M. Katler is a futures commission merchant executive, presently a vice president at Fortis Clearing Americas and a board member of CME Group.
Previously Katler served as vice president of O'Connor & Company LLC from 2002 until it was acquired by Fortis Clearing Americas in 2006. He served as head of the professional trading group of Fimat USA from 2000 to 2002. Prior to that, he was senior vice president of ING Barings Futures and Options Inc. 
- Gary M. Katler - NFA ID 0062308
- ↑ "Board of Directors”. CME Group.
- ↑ Insider Filings - Gary M. Katler. Yahoo Finance.
- ↑ Executives. Wall Street Journal.
- ↑ Gary M. Katler. Forbes.com.