Thomas A. Marks

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CRD#: 817457

Professional summary

Being a previously registered professional could mean that this person is no longer operating under the supervision of the SEC or FINRA.

That means that the Securities and Exchange Commission may not be able to oversee the services that this specific professional is providing.

Thomas Alfred Marks, who also goes by Tom Marks, was a registered financial professional .

Thomas is a previously registered financial professional and started their career in finance in 1976. Thomas had worked at 7 firms and has passed the Series 63, SIE, Series 5, PC and Series 7 exams.

Aliases

Tom Marks

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)

The CRS(Customer Relationship Summary) document is not provided.

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

Past

January 3, 2018 - July 28, 2026

OSAIC INSTITUTIONS, INC.

CRD#: 35371

Overland Park, KS

Past

February 15, 2017 - December 31, 2017

INVEST FINANCIAL CORPORATION

CRD#: 12984

KANSAS CITY, KS

Past

January 16, 1990 - March 1, 2017

BANKERS & INVESTORS CO.

CRD#: 6874

KANSAS CITY, KS

Past

December 20, 1989 - January 11, 1990

BANKERS & INVESTORS CO.

CRD#: 6874

Past

February 1, 1988 - January 16, 1990

BIRCHTREE FINANCIAL SERVICES LLC

CRD#: 15014

MINNEAPOLIS, MN

Past

January 8, 1980 - February 12, 1988

LEHMAN BROTHERS INC.

CRD#: 7506

Past

September 26, 1978 - January 28, 1980

MERRILL LYNCH, PIERCE, FENNER & SMITH INCORPORATED

CRD#: 7691

Past

January 27, 1976 - September 26, 1978

MERRILL LYNCH, PIERCE, FENNER & SMITH, INC.

CRD#: 572

Primary Firm SEC Registration

This SEC-registered firm can serve clients nationwide. Some states may require the firm to submit a notice filing if the firm has more than 5 clients or a physical office there. You can view these state-level filings under the section titled "State Registrations and Notice Filings".

OSAIC INSTITUTIONS, INC.

CONNECTICUT ASSOCIATION SECURITIES, INC. | OSAIC INSTITUTIONS, INC. | INFINEX INVESTMENTS, INC.

CRD#: 35371 / SEC#: 801-67242, 8-46661

RIA

Registered Investment Advisory firm - SEC (11/2/2006 Approved)

Connecticut

Registered Investment Advisory firm - SEC (11/22/2006 Terminated)

Florida

Registered Investment Advisory firm - SEC (11/22/2006 Terminated)

Indiana

Registered Investment Advisory firm - SEC (11/22/2006 Terminated)

Maine

Registered Investment Advisory firm - SEC (12/7/2006 Terminated)

Massachusetts

Registered Investment Advisory firm - SEC (3/23/2007 Terminated)

New Hampshire

Registered Investment Advisory firm - SEC (11/22/2006 Terminated)

Ohio

Registered Investment Advisory firm - SEC (11/22/2006 Terminated)

Pennsylvania

Registered Investment Advisory firm - SEC (11/22/2006 Terminated)

Rhode Island

Registered Investment Advisory firm - SEC (11/22/2006 Terminated)

Broker-Dealer Firm Regulated by FINRA (Boston district office)

Why is a state registration marked "Terminated"? When a firm registers with the SEC (usually after managing $100M+ AUM), it often withdraws separate state firm registrations unless required by that state. The firm can still serve clients there through its individually registered Investment Advisor Representatives (IARs).

State Registrations and Notice Filings

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

Visual representation of state registrations

This advisor is not registered in any state.

Don't see your state listed? The advisor may still be able to work with you under the federal De Minimis Rule, which allows up to five investment advisory clients in a state without registration. Some states, like TX, LA, NE, and NH, may still require registration or notice filing. Contact the advisor or their firm to confirm their investment advisory availability in your state.

Exams

State Security Law Exam

Series 63

Date: 11/3/1980

Uniform Securities Agent State Law Examination

General Industry/Product Exam

SIE

Date: 10/1/2018

Securities Industry Essentials Examination

General Industry/Product Exam

Series 5

Date: 10/17/1981

Interest Rate Options Examination

General Industry/Product Exam

PC

Date: 1/8/1980

AMEX Put and Call Exam

General Industry/Product Exam

Series 7

Date: 1/17/1976

General Securities Representative Examination

Current Firm

OSAIC INSTITUTIONS, INC.

CONNECTICUT ASSOCIATION SECURITIES, INC. | OSAIC INSTITUTIONS, INC. | INFINEX INVESTMENTS, INC.

CRD#: 35371 / SEC#: 801-67242, 8-46661

RIA

Registered Investment Advisory firm - SEC (11/2/2006 Approved)

Connecticut

Registered Investment Advisory firm - SEC (11/22/2006 Terminated)

Florida

Registered Investment Advisory firm - SEC (11/22/2006 Terminated)

Indiana

Registered Investment Advisory firm - SEC (11/22/2006 Terminated)

Maine

Registered Investment Advisory firm - SEC (12/7/2006 Terminated)

Massachusetts

Registered Investment Advisory firm - SEC (3/23/2007 Terminated)

New Hampshire

Registered Investment Advisory firm - SEC (11/22/2006 Terminated)

Ohio

Registered Investment Advisory firm - SEC (11/22/2006 Terminated)

Pennsylvania

Registered Investment Advisory firm - SEC (11/22/2006 Terminated)

Rhode Island

Registered Investment Advisory firm - SEC (11/22/2006 Terminated)

Broker-Dealer Firm Regulated by FINRA (Boston district office)

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Contact information

Main Address

538 Preston Avenue, Meriden, CT 06450-4858

Mailing Address

538 Preston Avenue, Meriden, CT 06450-4858

Phone number

(203) 599-6000

Established

Connecticut since 04/07/1993

Firm type

Corporation

Fiscal year end

December

Firm Size

Large

# of Employees

630

SEC notice filing (53 States and Territories)

FINRA licenses (53 States and Territories)

Documents

Customer Relationship Summary (CRS / SEC)

Customer Relationship Summary (CRS / FINRA)

Latest Form ADV

Part 2 Brochures

ADV 2A (2/5/2026)

ADV WRAP APPENDIX - ADVISOR MANAGED (LEGACY USE ONLY) (3/31/2025)

ADV WRAP APPENDIX - WEALTHSELECT (LEGACY USE ONLY) (3/31/2025)

ADV WRAP APPENDIX - AMP (3/31/2025)

ADV WRAP APPENDIX - UMA (3/31/2025)

Direct owners and executive officers

Name	Position	CRD#
OSAIC INSTITUTIONS HOLDINGS, INC.	HOLDING COMPANY
AMARANTE, STEPHEN PAUL	PRESIDENT, CEO AND DIRECTOR	3165067
CORNICK, GREGORY ALLEN	DIRECTOR	3132991
HAMMOND, DORI JAMILLE	CHIEF COMPLIANCE OFFICER	3259012
MITCHELL, CHRISTOPHER MILLS	CORPORATE TREASURER, FINANCIAL AND OPERATIONS PRINCIPAL	2420144
PRICE, JAMES DALE	CHAIRMAN	1243224
SCHLUETER, MATTHEW ADAM	DIRECTOR AND EXECUTIVE VICE PRESIDENT OPERATIONS AND TECHNOLOGY SOLUTIONS	2627931

Regulatory assets under management

Total Number of Accounts	8,779
AUM (Assets Under Management)	$ 4,024,448,971

Disclosures

Regulatory Event

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.

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Advisor Monitoring

Firm Stability Insights

Thomas A. Marks

Professional summary

Aliases

Other business activities

Blog Corner

CRS (Client Relationship Summary)

Certified licenses

Experience

INVEST FINANCIAL CORPORATION

BANKERS & INVESTORS CO.

BANKERS & INVESTORS CO.

BIRCHTREE FINANCIAL SERVICES LLC

LEHMAN BROTHERS INC.

MERRILL LYNCH, PIERCE, FENNER & SMITH INCORPORATED

MERRILL LYNCH, PIERCE, FENNER & SMITH, INC.

Primary Firm SEC Registration

OSAIC INSTITUTIONS, INC.

State Registrations and Notice Filings

Exams

Series 63

Date: 11/3/1980

SIE

Date: 10/1/2018

Series 5

Date: 10/17/1981

PC

Date: 1/8/1980

Series 7

Date: 1/17/1976

Current Firm

OSAIC INSTITUTIONS, INC.

Contact information

SEC notice filing (53 States and Territories)

FINRA licenses (53 States and Territories)

Documents

Part 2 Brochures

Direct owners and executive officers

Regulatory assets under management

Disclosures

Red Flags

Company Information

OSAIC INSTITUTIONS, INC.

TRUST BUT VERIFY

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