AdFi
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BOOSTER, LLC

SEC Registered

Helping Clients Navigate Corporate Retirement Planning

BALTIMORE, MDhttps://booster401k.com410-216-1551
Assets Under Management
$100M–$500M
Employees
4
Office Locations
2 offices
Total Accounts
226

About the firm

BOOSTER is an independent Registered Investment Advisor and ERISA 3(21) Fiduciary Advisor that helps small to medium size businesses develop and manage qualified workforce retirement plans. The firm emphasizes fee transparency, fiduciary oversight, investment monitoring, and employee education.

Firm Focus

Client segments reported on the firm's SEC Form ADV — applies to all advisors at the firm.

IndividualsHigh Net WorthCharitable OrganizationsState/Municipal

Areas of expertise

401(k) PlansERISA FiduciaryRetirement PlanningInvestment MonitoringEmployee EducationFee TransparencyIndependent RIAPlan Sponsor Consulting

Services

ERISA 3(21) fiduciary advisory services for corporate 401(k) and qualified retirement plans, including investment option selection and monitoring, fee transparency, employee education, and tailored retirement plan consulting

Who they serve

Small to medium size businesses seeking qualified workforce retirement plans

Client segmentClientsAssets managed
Individuals (Non-HNW)147$39M
High Net Worth Individuals14$30M
Investment Companies0
Pooled Investment Vehicles0$0
Pension/Profit Sharing Plans0$0
Charitable Organizations29$161M
State/Municipal Entities0
Insurance Companies0
Sovereign Wealth Funds0
Corporations0$0

4 total clients reported on Form ADV.

Leadership

Mary Carol Ceselsky-Grunder
OWNER AND CHIEF COMPLIANCE OFFICER

Office locations

2 offices in 1 state
MD
BALTIMOREHQ
MD
BALTIMORE

Advisors at this firm

1 advisor in the directory

Regulatory & compliance

CRD number
#314629
SEC Number
801-123233
Disciplinary History
No
Fee Model & Minimums
Model: AUM / Flat Fee
Asset tierAnnual rate
Personal Advisory < $500K0.90%
Personal Advisory $500K-$3M0.80%
Personal Advisory $3M-$10M0.65%
Personal Advisory $10M+0.00%
Retirement Plan < $500K0.65%
Retirement Plan $500K-$1.5M0.40%
Retirement Plan $1.5M-$5M0.25%
Retirement Plan $5M-$10M0.15%
Retirement Plan $10M-$20M0.00%
Retirement Plan $20M+0.00%

Data as of March 4, 2026 · Source: SEC IAPD & FINRA BrokerCheck

Contact Information

Editorial disclosure

This profile was compiled and published by AdvisorFinder as editorial content using publicly available information from the SEC's IAPD database and FINRA BrokerCheck. BOOSTER, LLC has not reviewed, approved, or endorsed this profile and is not responsible for its accuracy. Regulatory records change over time — always verify the current record directly on the SEC or FINRA websites before making any decision.

BrokerCheck data is used subject to the FINRA BrokerCheck Terms of Use. Found something inaccurate? Report inaccurate data and we will correct any error we introduced. Errors in the underlying BrokerCheck record itself are referred to FINRA, which maintains that record.

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BOOSTER, LLC in BALTIMORE, MD | AdvisorFinder