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SB

Samuel T. Brook

XTX EXECUTION SERVICES
London, N1C 4DN
CRD#: 8167119
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SB
Samuel Thomas BrookXTX EXECUTION SERVICES

Professional summary

Samuel Thomas Brook, who also goes by Samuel Brook, is a registered financial professional currently at XTX EXECUTION SERVICES LLC .

Samuel is registered as a RR (Registered Representative) and started their career in finance in 2026. Samuel has worked at 1 firm and has passed the Series 63, Series 7TO and SIE exams.

Aliases

Samuel Brook

Other business activities

Outside business activity is any business or activity undertaken by an advisor that is outside the scope of their relationship with their firm (e.g., consulting services, real estate, freelance work, teaching, etc.). Investors should stay informed about these activities to ensure no conflicts of interest.
The advisor shows no other business activity.

Blog Corner

CRS (Client Relationship Summary) - BD

Click below to view Samuel Thomas Brook's CRS (Customer Relationship Summary).

Certified licenses

Advisors may have various certifications and credentials from different organizations. AdvisorCheck highlights these seven certifications - AIF®, CFP®, ChFC®, CFA, CLU®, CIMA®, CPWA®
None

Experience

Current

April 8, 2026 - Present

XTX EXECUTION SERVICES LLC

Office #1: R7 14-18 Handyside St., London, N1C 4DN
BD
CRD#: 309266
London,

State Registrations and Notice Filings

Listed states reflect where the advisor is authorized to serve clients under state regulations.

RR
indicates the advisor is registered as a Registered Representative in this state, allowing them to offer securities such as stocks, bonds, and mutual funds through a broker-dealer.

Visual representation of state registrations

RR
New York
(5/29/2026)
RR
Texas
(5/29/2026)

Exams

State Security Law Exam
RR
Series 63
Date: 5/28/2026
Uniform Securities Agent State Law Examination
General Industry/Product Exam
RR
Series 7TO
Date: 12/9/2025
General Securities Representative Examination
General Industry/Product Exam
RR
SIE
Date: 10/14/2025
Securities Industry Essentials Examination
SRO Registrations
RR
FINRA

Current Firm

XE
XTX EXECUTION SERVICES LLC
XTX EXECUTION SERVICES LLC

CRD#: 309266 / SEC#: , 8-70532

BD
Broker-Dealer Firm Regulated by FINRA (New York district office)
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Contact information

Main Address
50 Hudson Yards 64th Floor, New York, NY 10001
Mailing Address
50 Hudson Yards 64th Floor, New York, NY 10001
Phone number
(212) 660-9930
Established
Delaware since 03/17/2020
Firm type
Limited Liability Company
Fiscal year end
December
Firm Size
Small
# of Employees

FINRA licenses (2 States and Territories)

Documents

Direct owners and executive officers

NamePositionCRD#
XTX HOLDINGS LLCSOLE MEMBER
BRINGUIER, ROBIN JEAN ROBERT MARIEHEAD OF U.S. OPERATIONS - PRINCIPAL OPERATIONS OFFICER7798550
POSTLETHWAITE, AILEEN LORELLECHIEF COMPLIANCE OFFICER5931575
SCOTT, OLIVERFINOP - PRINCIPAL FINANCIAL OFFICER6882445
SWANSON, ERIC JOHNCEO5224320

Red Flags

Disclosures can be potential red flags, including customer disputes, regulatory fines, employer terminations, bankruptcies, judgments, liens, or certain criminal activities.

Check for any disclosures as part of your thorough research when choosing an advisor.

Company Information

XTX EXECUTION SERVICES LLC

CRD#: 309266London, N1C 4DN

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