New York attorney · Reg. #4997318

Mark Clifton Brown

Registered (registry: Currently registered)

Current employer

The Options Clearing Corporation · Chicago, IL · since at least September 2026

Admission

Admitted 2012, Third Department · University of Pennsylvania Law School

Employment history

• The Options Clearing Corporation · Chicago, IL · current

Compiled from NYS Office of Court Administration registration records and published NY Appellate Division decisions; current as of October 2026. Not an official record; verify with the NY Courts Attorney Search.