Sean M. O'brien

ECHO45 ADVISORS

WALNUT CREEK, CA 94595

CRD#: 5012235

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Professional summary

Sean Michael O'brien, who also goes by Sean M O'brien, Sean M Obrien, is a registered financial advisor currently at ECHO45 ADVISORS LLC located in Walnut Creek, California.

Sean is registered as an IAR (Investment Advisor Representative) and started their career in finance in 2005. Sean has worked at 5 firms and has passed the Series 66, SIE and Series 7 exams.

At a Glance

Always Fiduciary

Aliases

Sean M O'brien | Sean M Obrien

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) - RIA

Click below to view Sean Michael O'brien'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 18, 2026 - Present

ECHO45 ADVISORS LLC

Office #1: 1802 Tice Valley Blvd, Walnut Creek, CA 94595

RIA

CRD#: 307265

WALNUT CREEK, CA

Past

June 22, 2023 - June 22, 2026

THE SALVETTI GROUP

RIA

CRD#: 324974

SACRAMENTO, CA

Past

April 26, 2019 - July 5, 2023

RAYMOND JAMES FINANCIAL SERVICES ADVISORS, INC

RIA

CRD#: 149018

Sacramento, CA

Past

April 26, 2019 - July 5, 2023

RAYMOND JAMES FINANCIAL SERVICES, INC.

CRD#: 6694

Sacramento, CA

Past

January 5, 2006 - April 30, 2019

MERRILL LYNCH, PIERCE, FENNER & SMITH INCORPORATED

RIA

CRD#: 7691

SACRAMENTO, CA

Past

October 27, 2005 - April 30, 2019

MERRILL LYNCH, PIERCE, FENNER & SMITH INCORPORATED

CRD#: 7691

SACRAMENTO, CA

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".

ECHO45 ADVISORS LLC

ECHO45 ADVISORS LLC | ECHO45 ADVISORS, LLC

CRD#: 307265 / SEC#: 801-118109

RIA

Registered Investment Advisory firm - (2/24/2020 Approved)

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.

Highlighted states indicate IAR registrations

IAR

California
(6/18/2026)

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

IAR

Series 66

Date: 12/29/2005

Uniform Combined State Law Examination

General Industry/Product Exam

SIE

Date: 10/1/2018

Securities Industry Essentials Examination

General Industry/Product Exam

Series 7

Date: 10/26/2005

General Securities Representative Examination

Current Firm

ECHO45 ADVISORS LLC

ECHO45 ADVISORS LLC | ECHO45 ADVISORS, LLC

CRD#: 307265 / SEC#: 801-118109

RIA

Registered Investment Advisory firm - (2/24/2020 Approved)

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Contact information

Main Address

1802 Tice Valley Blvd, Walnut Creek, CA 94595

Mailing Address

Phone number

(877) 432-4645

Established

Firm type

Fiscal year end

# of Employees

SEC notice filing (5 States and Territories)

Documents

Customer Relationship Summary (CRS / SEC)

Latest Form ADV

Part 2 Brochures

FORM ADV PART 2A - FIRM BROCHURE (1/2/2026)

Regulatory assets under management

Total Number of Accounts	566
AUM (Assets Under Management)	$ 194,875,409

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

Sean M. O'brien

Professional summary

At a Glance

Aliases

Other business activities

Blog Corner

CRS (Client Relationship Summary) - RIA

Click below to view Sean Michael O'brien's CRS (Customer Relationship Summary).

Certified licenses

Experience

THE SALVETTI GROUP

RAYMOND JAMES FINANCIAL SERVICES ADVISORS, INC

RAYMOND JAMES FINANCIAL SERVICES, INC.

MERRILL LYNCH, PIERCE, FENNER & SMITH INCORPORATED

MERRILL LYNCH, PIERCE, FENNER & SMITH INCORPORATED

Primary Firm SEC Registration

ECHO45 ADVISORS LLC

State Registrations and Notice Filings

Exams

Series 66

Date: 12/29/2005

SIE

Date: 10/1/2018

Series 7

Date: 10/26/2005

Current Firm

ECHO45 ADVISORS LLC

Contact information

SEC notice filing (5 States and Territories)

Documents

Part 2 Brochures

Regulatory assets under management

Red Flags

Company Information

ECHO45 ADVISORS LLC

TRUST BUT VERIFY

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