AdvisorCheck - Find and Connect with Top Financial Advisors on Your Terms
Advisor Search
Why AdvisorCheck

We're Here To Help

AdvisorCheck empowers you to find, evaluate, and monitor financial advisors with confidence and clarity.

Advisor Monitoring

Financial advisor's situations can change, sometimes without notice. AdvisorCheck's Monitoring tool helps you avoid surprises and stay on top of your financial health.

Firm Stability Insights

The stability of your financial advisor's firm has a significant impact in the security and quality of service you receive. Our tool provides historical data and key insights over time to help you make informed, confident decisions.

Pricing
For Advisors
JK

Jack A. Krumbein

JACKSONVILLE, FL 32258
CRD#: 4162893
Some features on this profile are disabled
JK
Jack Andreas Krumbein

Professional summary

Jack Andreas Krumbein, who also goes by Jack A. Krumbein, Jack Andreas Krumbein Mejia, was a registered financial advisor .

Jack is registered as an IAR (Investment Advisor Representative) and RR (Registered Representative) and started their career in finance in 2000. Jack had worked at 4 firms and has passed the Series 63, Series 65, Series 79TO, SIE and Series 7 exams.

Question & Answer

Are you a "fiduciary"?
Yes

Aliases

Jack A. Krumbein | Jack Andreas Krumbein Mejia

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 Jack Andreas Krumbein's CRS (Customer Relationship Summary).
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

June 3, 2026 - Present

Office #1: 12724 Gran Bay Parkway West Suite 410, Jacksonville, FL 32258Office #2: 12724 Gran Bay Parkway West, Suite 410, Jacksonville, FL 32258
JACKSONVILLE, FL
Current

February 21, 2026 - Present

GT SECURITIES, INC.

Office #1: 12130 Millennium Dr Suite 300, Los Angeles, CA 90094
BD
CRD#: 116012
LOS ANGELES, CA
Past

November 21, 2000 - June 18, 2001

MORGAN STANLEY DW INC.

BD
CRD#: 7556
PURCHASE, NY
Past

August 15, 2000 - November 8, 2000

INTERFIRST CAPITAL CORPORATION

BD
CRD#: 7659
LOS ANGELES, CA

State Registrations and Notice Filings

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

IAR
means the advisor is registered as an Investment Advisor Representative in this state and is authorized to provide investment advice to clients there.
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
California
(2/21/2026)
RR
Florida
(2/21/2026)
IAR
Florida
(6/3/2026)

Exams

State Security Law Exam
RR
Series 63
Date: 11/25/2025
Uniform Securities Agent State Law Examination
State Security Law Exam
IAR
Series 65
Date: 9/13/2025
Uniform Investment Adviser Law Examination
General Industry/Product Exam
RR
Series 79TO
Date: 2/21/2026
Investment Banking Registered Representative Examination
General Industry/Product Exam
RR
SIE
Date: 11/1/2025
Securities Industry Essentials Examination
General Industry/Product Exam
RR
Series 7
Date: 8/14/2000
General Securities Representative Examination
SRO Registrations
RR
FINRA

Current Firm

GS
GT SECURITIES, INC.
GROWTHINK SECURITIES, INC. | GT SECURITIES, INC. | GROWTHINK, INC.

CRD#: 116012 / SEC#: , 8-53527

BD
Broker-Dealer Firm Regulated by FINRA (Los Angeles district office)
Loading...

Contact information

Main Address
12130 Millennium Dr Suite 300, Los Angeles, CA 90094
Mailing Address
12130 Millennium Dr, Los Angeles, CA 90094
Phone number
(310) 846-5004
Established
California since 12/06/2001
Firm type
Corporation
Fiscal year end
December
Firm Size
Medium
# of Employees

FINRA licenses (51 States and Territories)

Documents

Customer Relationship Summary (CRS / FINRA)

Direct owners and executive officers

NamePositionCRD#
GROWTHINK, INC.PARENT CORPORATION
LAVINSKY, DAVID KENNETHMANAGING DIRECTOR4455040
TURO, JAMES STEVENMANAGING DIRECTOR & CHIEF COMPLIANCE OFFICER2083402

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

GT SECURITIES, INC.

CRD#: 116012Jacksonville, FL 32258

TRUST BUT VERIFY

Monitor Jack Krumbein

Get automatic monthly alerts on:
Job or Firm Moves
Licensing Changes
Client Complaints
New Red Flags
Contact Information Updates

Similar Advisors

Michael Patrick Mcalpin
Michael McalpinAdvisorCheck Check Mark
INTELLICAPITAL ADVISORS LLC
IAR
PONTE VEDRA, FL
Andreas Heinrich
Andreas HeinrichAdvisorCheck Check Mark
LPL ENTERPRISE, LLC
IAR
RR
JACKSONVILLE, FL
TD
Troy DavisAdvisorCheck Check Mark
DAVIS CAPITAL MANAGEMENT
IAR
JACKSONVILLE, FL
footer-logo
How We Help
Advisor Search
Find Advisors by State
Blog
Glossary
For Advisors
About Us
Help Center
Terms Of UsePrivacy PolicySubscription Policy
Help Center
AdvisorCheck does not offer investment advice and should not replace discussions with professional accounting, tax, legal or financial advisors.© 2026 AdvisorCheck, an AIMR Analytics company. All rights reserved.