Steven M. Siskind
Professional summary
Steven Mark Siskind is a registered financial professional currently at MEMX EXECUTION SERVICES LLC located in Jersey City, New Jersey.
Steven is registered as a RR (Registered Representative) and started their career in finance in 1995. Steven has worked at 6 firms and has passed the Series 63, SIE, Series 3 and Series 7 exams.
Question & Answer
Aliases
Other business activities
CRS (Client Relationship Summary) - BD
Click below to view Steven Mark Siskind's CRS (Customer Relationship Summary).
Certified licenses
Experience
September 3, 2025 - Present
MEMX EXECUTION SERVICES LLC
Office #1: 525 Washington Boulevard Suite 300, Jersey City, NJ 07310June 1, 2006 - August 9, 2022
INSTINET, LLC
November 16, 2004 - June 1, 2006
INSTINET, LLC
March 4, 2003 - October 20, 2004
NF CLEARING, INC.
June 1, 1999 - December 31, 2002
HAPOALIM SECURITIES USA, INC.
August 16, 1995 - June 1, 1999
STUART, COLEMAN & CO., INC.
State Registrations and Notice Filings
Listed states reflect where the advisor is authorized to serve clients under state regulations.
Visual representation of state registrations
(9/3/2025)
(9/3/2025)
Exams
FINRA
Current Firm
MEMX EXECUTION SERVICES LLC
CRD#: 304129 / SEC#: , 8-70449
Contact information
FINRA licenses (2 States and Territories)
Documents
Direct owners and executive officers
| Name | Position | CRD# |
|---|---|---|
| MEMX HOLDINGS LLC | MEMX HOLDINGS LLC | |
| ACHARYA, ISHAAN | CHIEF FINANCIAL OFFICER | 5358383 |
| FRANZON, ANDERS WILLIAM | GENERAL COUNSEL / SECRETARY | |
| KELLNER, JONATHAN ALAN | CHIEF EXECUTIVE OFFICER | 2209043 |
| SAUERWINE, MEGAN LYNN | CONTROLLER / FINOP | 6024362 |
| STRATHMAN, LAUREN MALLORY | CHIEF COMPLIANCE OFFICER / AML COMPLIANCE OFFICER | 6575150 |
| ZUBA, QUITO JON | DIRECTOR, HEAD OF MARKET OPERATIONS | 4660263 |
Red Flags
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