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Chelsey L. Koster

SB ADVISORY
Grand Rapids, MI 49503
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CRD#: 7154582
CK

Professional summary


Chelsey Lynn Koster, who also goes by Chelsey Lynn Koster, Chelsey Lynn Strumberger, is a registered financial advisor currently at SB ADVISORY, LLC located in Grand Rapids, Michigan and SAN BLAS SECURITIES LLC located in Grand Rapids, Michigan.

Chelsey is registered as an IAR (Investment Advisor Representative) and RR (Registered Representative) and started their career in finance in 2020. Chelsey has worked at 4 firms and has passed the Series 66, Series 7TO and SIE exams.

top-8-questions

Question & Answer


Are you a "fiduciary"?
Yes

Aliases


Chelsey Lynn Koster | Chelsey Lynn Strumberger

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.
1)***Fixed Insurance; Investment Related; Grand Rapids, MI; Broker; Fixed Annuities, LTC, Life, Group Benefits, Health, DI, Medical; Start Date: 11/01/2020; 160 hrs per month; 160 during trading hours. 2) YOUNG LEADERS SOCIETY- UNITED WAY POSITION: Board Member NATURE: Board Member/Officer/Director of an Organization INVESTMENT RELATED: No NUMBER OF HOURS: 2 SECURITIES TRADING HOURS: 1 START DATE: 06/19/2021 ADDRESS: 118 Commerce Ave SW, rand Rapids MI 49503, United States DESCRIPTION: Board member- help with needs in the community. Volunteering for events such as preparing food for local foodbanks/local races. Raising funds for needed improvement in the community. 3) Advantage Benefits Group, 1 Ionia Ave SW, Grand Rapids, MI, 49503, and 12935 S West Bay Shore Drive, Traverse City, MI, 49684, Employee, Sales & Support in the health benefits & retirement area, since 8/2023, 160 hours per month, 140 during market.

Blog Corner


CRS (Client Relationship Summary) - RIA


Click below to view Chelsey Lynn Koster'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

July 28, 2025 - Present

SB ADVISORY, LLC

Office #1: 1 Ionia Ave. Sw, Suite 300, Grand Rapids, MI 49503Office #2: 12935 S West Bay Shore Dr., Traverse City, MI 49684-6298
RIA
CRD#: 154680
Grand Rapids, MI
Current

July 24, 2025 - Present

SAN BLAS SECURITIES LLC

Office #1: 1 Ionia Ave Sw Suite 300, Grand Rapids, MI 49503
BD
CRD#: 290605
Grand Rapids, MI
Past

August 11, 2023 - July 16, 2025

NEXT FINANCIAL GROUP, INC.

RIA
CRD#: 46214
Grand Rapids, MI
Past

August 10, 2023 - July 16, 2025

NEXT FINANCIAL GROUP, INC.

BD
CRD#: 46214
Grand Rapids, MI
Past

October 30, 2020 - July 20, 2023

PRINCIPAL SECURITIES, INC.

RIA
CRD#: 1137
Grand Rapids, MI
Past

September 8, 2020 - July 20, 2023

PRINCIPAL SECURITIES, INC.

BD
CRD#: 1137
Grand Rapids, MI

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".
SA
SB ADVISORY, LLC
ADVANCED ASSET SOLUTIONS, LLC | TREESE INVESTMENTS LLC | THE HENDERSON FINANCIAL GROUP & (HYACINTHHENDERSON.COM) | THE FINANCIAL ARCHITECTS (FINANCIALARCHITECTS-USA.COM) | SUMMIT ROCKWALL WEALTH MANAGERS | SMITH BERNSTEIN | SHEBAR FINANCIAL, LLC | SB ADVISORY, LLC | SANTA FE WEALTH ADVISORS | ROBERT BULLOCH WEALTH MANAGEMENT LLC (ROBERTBULLOCH.COM) | RNL FINANCIAL, LLC | RCA ADVISORY SERVICES, LLC | PRO FINANCIAL GROUP, LLC | PNW ADVISORY | NERGARD WEALTH MANAGEMENT LLC | MOHLMAN WEALTH MANAGEMENT | IFS ADVISORY, LLC | GREEN STREET WEALTH ADVISORY | GRABE FINANCIAL SERVICES INC | FERIS FINANCIAL, LLC | EM FINANCIAL SERVICES | DEEMER WEALTH MANAGEMENT, LLC | CORTO FINANCIAL GROUP, LLC | CLARITY CAPITAL MANAGEMENT CORP | BRYAN EDWARDS WEALTH MANAGEMENT | BRENNAN FRANCIS | BOWMAN WEALTH MANAGEMENT LLC | ARNETT FINANCIAL SERVICES GROUP, LLC | ARBOR WEALTH MANAGEMENT | ADVANCED FINANCIAL CONCEPTS, INC.

CRD#: 154680 / SEC#: 801-77380

RIA
Registered Investment Advisory firm - (12/4/2012 Approved)
Arkansas
Registered Investment Advisory firm - (12/31/2012 Terminated)
California
Registered Investment Advisory firm - (12/31/2012 Terminated)
Colorado
Registered Investment Advisory firm - (1/3/2013 Terminated)
Florida
Registered Investment Advisory firm - (12/31/2012 Terminated)
Indiana
Registered Investment Advisory firm - (12/31/2012 Terminated)
Maryland
Registered Investment Advisory firm - (12/31/2012 Terminated)
Missouri
Registered Investment Advisory firm - (8/19/2014 Terminated)
Nevada
Registered Investment Advisory firm - (12/31/2012 Terminated)
New Jersey
Registered Investment Advisory firm - (1/2/2013 Terminated)
New Mexico
Registered Investment Advisory firm - (12/31/2012 Terminated)
North Carolina
Registered Investment Advisory firm - (12/31/2012 Terminated)
Pennsylvania
Registered Investment Advisory firm - (12/31/2012 Terminated)
Puerto Rico
Registered Investment Advisory firm - (12/31/2012 Terminated)
Tennessee
Registered Investment Advisory firm - (12/31/2012 Terminated)
Texas
Registered Investment Advisory firm - (12/3/2013 Terminated)
Utah
Registered Investment Advisory firm - (12/31/2012 Terminated)
Virginia
Registered Investment Advisory firm - (12/31/2012 Terminated)
West Virginia
Registered Investment Advisory firm - (12/31/2012 Terminated)

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
Michigan
(7/28/2025)
IAR
Michigan
(7/28/2025)

Exams


State Security Law Exam
RR
IAR
Series 66
Date: 10/21/2020
Uniform Combined State Law Examination
General Industry/Product Exam
RR
Series 7TO
Date: 9/5/2020
General Securities Representative Examination
General Industry/Product Exam
SRO Registrations
RR
FINRA

Current Firm


SA
SB ADVISORY, LLC
ADVANCED ASSET SOLUTIONS, LLC | TREESE INVESTMENTS LLC | THE HENDERSON FINANCIAL GROUP & (HYACINTHHENDERSON.COM) | THE FINANCIAL ARCHITECTS (FINANCIALARCHITECTS-USA.COM) | SUMMIT ROCKWALL WEALTH MANAGERS | SMITH BERNSTEIN | SHEBAR FINANCIAL, LLC | SB ADVISORY, LLC | SANTA FE WEALTH ADVISORS | ROBERT BULLOCH WEALTH MANAGEMENT LLC (ROBERTBULLOCH.COM) | RNL FINANCIAL, LLC | RCA ADVISORY SERVICES, LLC | PRO FINANCIAL GROUP, LLC | PNW ADVISORY | NERGARD WEALTH MANAGEMENT LLC | MOHLMAN WEALTH MANAGEMENT | IFS ADVISORY, LLC | GREEN STREET WEALTH ADVISORY | GRABE FINANCIAL SERVICES INC | FERIS FINANCIAL, LLC | EM FINANCIAL SERVICES | DEEMER WEALTH MANAGEMENT, LLC | CORTO FINANCIAL GROUP, LLC | CLARITY CAPITAL MANAGEMENT CORP | BRYAN EDWARDS WEALTH MANAGEMENT | BRENNAN FRANCIS | BOWMAN WEALTH MANAGEMENT LLC | ARNETT FINANCIAL SERVICES GROUP, LLC | ARBOR WEALTH MANAGEMENT | ADVANCED FINANCIAL CONCEPTS, INC.

CRD#: 154680 / SEC#: 801-77380

RIA
Registered Investment Advisory firm - (12/4/2012 Approved)
Arkansas
Registered Investment Advisory firm - (12/31/2012 Terminated)
California
Registered Investment Advisory firm - (12/31/2012 Terminated)
Colorado
Registered Investment Advisory firm - (1/3/2013 Terminated)
Florida
Registered Investment Advisory firm - (12/31/2012 Terminated)
Indiana
Registered Investment Advisory firm - (12/31/2012 Terminated)
Maryland
Registered Investment Advisory firm - (12/31/2012 Terminated)
Missouri
Registered Investment Advisory firm - (8/19/2014 Terminated)
Nevada
Registered Investment Advisory firm - (12/31/2012 Terminated)
New Jersey
Registered Investment Advisory firm - (1/2/2013 Terminated)
New Mexico
Registered Investment Advisory firm - (12/31/2012 Terminated)
North Carolina
Registered Investment Advisory firm - (12/31/2012 Terminated)
Pennsylvania
Registered Investment Advisory firm - (12/31/2012 Terminated)
Puerto Rico
Registered Investment Advisory firm - (12/31/2012 Terminated)
Tennessee
Registered Investment Advisory firm - (12/31/2012 Terminated)
Texas
Registered Investment Advisory firm - (12/3/2013 Terminated)
Utah
Registered Investment Advisory firm - (12/31/2012 Terminated)
Virginia
Registered Investment Advisory firm - (12/31/2012 Terminated)
West Virginia
Registered Investment Advisory firm - (12/31/2012 Terminated)
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Contact information


Main Address
3424 Peachtree Road Ne Suite 2200, Atlanta, GA 30326-1184
Mailing Address
Phone number
(404) 704-0406
Established
Firm type
Fiscal year end
# of Employees
29

SEC notice filing (47 States and Territories)


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Documents


Customer Relationship Summary (CRS / SEC)Latest Form ADV

Part 2 Brochures

SB ADVISORY BROCHURE (10/6/2025)

Regulatory assets under management


Total Number of Accounts1,540
AUM (Assets Under Management)$ 404,771,341

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


SB ADVISORY, LLC

CRD#: 154680Grand Rapids, MI 49503

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