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Brett Andrew Sonzogni

Siebert Advisornxt, LLC.

New York, NY

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Current Employers
Siebert Advisornxt, Llc.

300 Vesey Street, 5Th Floor, New York, NY 10282 • United States

Current Registrations

AuthorityCategoryStatusDate
FL RA APPROVED 2026-04-21
NY RA APPROVED 2026-04-02
  • FL RA
    APPROVED
    Since 2026-04-21
  • NY RA
    APPROVED
    Since 2026-04-02

Branch Locations

300 Vesey Street, 5Th Floor, New York, NY 10282 • United States

Disclosures

No disclosure categories reported as “Yes” on this SEC record.

  • Regulatory action No
  • Criminal No
  • Bankruptcy No
  • Civil judicial No
  • Bond No
  • Judgment / lien No
  • Investigation No
  • Customer complaint No
  • Termination No
Employment History
OrganizationCityStateFromTo
Duffy'S Grill Boca Raton FL 01/2013 03/2017
United American Mckinny TX 05/2014 03/2017
National Securities Corporation Boca Raton FL 03/2017 07/2022
National Asset Management Boca Raton FL 06/2018 07/2022
B. Riley Wealth Management Boca Raton FL 07/2022 02/2025
B. Riley Wealth Advisors Memphis TN 07/2022 02/2025
Revere Securities Llc New York NY 02/2025 04/2026
Empower Private Wealth New York NY 02/2024 03/2026
Muriel Siebert & Co., Llc New York NY 04/2026 Present
  • 01/2013 → 03/2017
    Duffy'S Grill
    Boca Raton, FL
  • 05/2014 → 03/2017
    United American
    Mckinny, TX
  • 03/2017 → 07/2022
    National Securities Corporation
    Boca Raton, FL
  • 06/2018 → 07/2022
    National Asset Management
    Boca Raton, FL
  • 07/2022 → 02/2025
    B. Riley Wealth Management
    Boca Raton, FL
  • 07/2022 → 02/2025
    B. Riley Wealth Advisors
    Memphis, TN
  • 02/2025 → 04/2026
    Revere Securities Llc
    New York, NY
  • 02/2024 → 03/2026
    New York, NY
  • 04/2026 → Present
    Muriel Siebert & Co., Llc
    New York, NY
Previous Registrations
Other Businesses

(1) UNITED AMERICAN, MEDICARE SUPPLEMENTS, MCKINNEY , TX AGENT. Start date 01-2015; 1 hour per month - zero during trading hours. Non-industry related. (2) Name of Business: Siebert AdvisorNxt Investment Related: Yes Location: Same location as Muriel Siebert, & Co., LLC Nature of business: Investment Advisory Firm Position, Title or Relationship: Dual employee. Investment Advisor Representative Approximate number of hours: Full time. Time split 90/10 between Muriel Siebert & Co., LLC and Siebert AdvisorNxt, LLC, subject to monthly change Compensation at both entities paid by same parent company, Siebert Financial Corporation as both are under common ownership and control of parent company.

Exams
CodeExamDate
S66 Uniform Combined State Law Examination 2018-06-05
  • S66 Uniform Combined State Law Examination
    2018-06-05

View on SEC IAPD

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