Brian Gelber

CEO

Brian Gelber became one of the industry’s most prominent leaders while working on the floor of the Chicago Board of Trade. He managed elite institutional accounts, including Salomon Brothers and Citigroup, while evolving a series of unique and profitable trading styles. His intellectual approach and shrewd market instincts as a broker and trader propelled Gelber Group’s success as a proprietary trading shop. He has maintained the firm’s longevity by sharing his passion and dedication with senior and novice traders alike. He currently serves on the board of directors of LGS, AmazingMail, Lifetract, and the Gelber Foundation. Brian graduated from Hamilton College class of 1976 with an honors BA in economics.

Justin Foley

Co-President

As Co-President of Gelber Group, Justin Foley oversees all of Gelber’s trading activity.

Justin joined Gelber in 2004 to launch the firm’s Forex Trading (FX) trading business. Under his leadership, Gelber became one of the top FX trading firms in the world. Prior to Gelber, Justin held trading and management positions at Bank of America, Bank One, and Chicago Research & Trading (CRT).

He is the past board chairman of the Daniel Murphy Scholarship Fund and continues to serve on the organization’s executive committee. He received a Bachelor of Arts in Pre-Professional Studies and Psychology from the University of Notre Dame.

Carl Mahler

Co-President

Carl Mahler leads algorithmic trading at Gelber Group, a division he founded in 2010. In this role, he directs traders, researchers and software engineers, overseeing all aspects of the lifecycle of automated trading strategies — from idea conception to research to implementation, deployment and operations. Today, Gelber’s diverse algorithmic trading portfolio ranges in execution from medium to high frequency and operates in all major futures and securities markets.

Carl also directs the firm-wide prioritization of technical initiatives, and oversees the design and implementation of Gelber’s proprietary platforms for backtesting, algorithmic trading and risk management.

Carl joined Gelber in 2004 after receiving his Bachelor of Science in electrical engineering and computer science from the Massachusetts Institute of Technology (MIT). In addition to his work at Gelber, he serves on the business conduct committee for CME and CBOT.

Phyllis Faul

Co-Chief Financial Officer

Phyllis Faul oversees financial operations for Gelber Group and its various foundations, trusts and investment companies.

Phyllis has vast industry experience including capital, regulatory, and compliance applications and efficiencies. Phyllis received her Bachelor of Science in finance from the University of Illinois at Chicago and her MBA, with a focus on accounting, from Loyola University Chicago.

Patrick Coffey

Chief Operating Officer

Pat Coffey oversees Gelber Group’s entire operations department, which includes Trade Support, Human Resources, Clearing and Settlements.

Pat joined Gelber in 2010 to lead the Forex Trading (FX) technology team. Before that, he worked in the technology divisions of large consulting companies, trading software firms and proprietary trading businesses, including Andersen Consulting, Spot Trading, and Nico Trading.

Pat received a Bachelor of Arts in Latin American Studies from Brown University, graduating with honors. He also received an MBA with honors from the University of Chicago Booth School of Business, with a dual major in finance and accounting.

David Bloom

Co-Chief Financial Officer

David Bloom manages financial operations and reporting for Gelber Group and its related entities. Prior to Gelber, David served as the Controller for Wolverine Trading and as an auditor for RSM US, focusing on financial markets. David earned a Bachelor of Science in Accounting and a Master of Accounting Sciences degree from the University of Illinois, Urbana-Champaign.

Dan Munro

Chief Risk Officer

Dan Munro is a former prolific foreign exchange options trader.

Dan applies his extensive trading knowledge to monitor and mitigate risk across Gelber’s complex portfolio of financial products. He strongly believes in challenging traders to grow their skills responsibly.

Dan received a Bachelor of Science in Accounting from the University of Illinois Urbana-Champaign. He also received a Master’s in Management from Northwestern Kellogg School of Management.

Baris Mestanogullari

Chief Technology Officer

Baris Mestanogullari oversees Gelber Group’s core technology platform development which includes trade execution, front and back-office application development, strategy integrations, and technical operations.

Baris joined Gelber in 2022. Prior to that he served in a wide range of technology and leadership roles at financial firms from exchanges to market makers, including CME Group, Chicago Trading Company, and Archelon Group. He is a named inventor on several U.S. patents in credit controls and chat-based OTC trading areas.

Baris received a Bachelor of Computer Engineering from University of Minnesota and a Bachelor of Arts in Computer Science from Luther College.

John Vlangos

Chief Information Officer

John Vlangos oversees Gelber Group’s technology infrastructure department, which includes Networks, Servers, Workstations, Facilities, and Technology Purchasing.

Before joining Gelber in 2014, John was the Cisco Systems technical expert for the majority of large prop trading firms operating within Chicago. Previous to that, John rose through the ranks to lead the Chicago Stock Exchange technology infrastructure team.

John is a Cisco Certified Network Professional and has achieved 3x MCSE certifications. He has also received a Bachelor of Science in Business Administration and Management from the University of Illinois Chicago.

Lisa Dunsky

General Counsel

With more than 30 years of experience in the global financial services industry, Lisa joined Gelber in 2017 as General Counsel. Prior to Gelber, Lisa worked at several top law firms in Chicago and as in-house counsel at CME Group. She received her JD from the University of Michigan and a joint degree in English and Psychology from the University of Dayton.