# Mary Ceselsky-Grunder

> Mary Ceselsky-Grunder is a fee-only financial advisor at Booster in Castellón de la Plana, Spain. Booster reports charging a percentage of assets and fixed fees on its Form ADV.

Page: https://find.wellspent.co/advisors/mary-ceselsky-grunder/
Built from SEC adviser records; last checked October 30, 2026.

## Facts

- **Firm:** Booster
- **Based in:** Castellón de la Plana, Spain
- **Fee model (firm's Form ADV):** Percentage of assets; Fixed fees
- **Assets under management (firm):** $229.3M across 226 accounts
- **CRD:** 4480192 (https://adviserinfo.sec.gov/individual/summary/4480192)
- **SEC registration:** Investment adviser representative in MD
- **Exams passed:** Series 66 (2015)
- **Firm size:** 4 employees
- **Disclosures:** None reported
- **Website:** http://booster401k.com/

## Frequently asked questions

### Is Mary Ceselsky-Grunder a fee-only financial advisor?

Yes, according to SEC records as of October 29, 2026: Mary holds no broker registration, and Booster reports no commissions, no broker-dealer, and no insurance sales or affiliated insurance agency on its Form ADV.

### How does Mary charge for financial advice?

Mary's firm, Booster, reports charging a percentage of assets and fixed fees on its SEC Form ADV.

### Where is Mary Ceselsky-Grunder based?

Mary Ceselsky-Grunder is based in Castellón de la Plana, Spain.

### Is Mary Ceselsky-Grunder registered with the SEC?

Yes. Mary Ceselsky-Grunder is registered as an investment adviser representative in MD (CRD 4480192), per SEC Investment Adviser Public Disclosure data as of October 29, 2026.

### How much does Booster manage?

Booster reports $229.3M across 226 accounts in assets under management.

### How do I contact Mary Ceselsky-Grunder?

Through Mary's website, booster401k.com.

## Sources

- SEC adviser records (https://adviserinfo.sec.gov/individual/summary/4480192): the firm's Form ADV reports no commissions, no broker-dealer, and no insurance sales or affiliated insurance agency, and the advisor holds no broker registration
- SEC Investment Adviser Public Disclosure and Form ADV: registration, exams, and firm facts, data as of October 29, 2026

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Source: Wellspent, the public graph of fee-only advisors (https://find.wellspent.co). No paid placement.