# Mark Zywiol

> Mark Zywiol is a fee-only financial advisor at Stonebrook Private in Northville, Michigan, who holds the CFP credential. Mark focuses on tax planning and estate & legacy planning. Stonebrook Private reports charging a percentage of assets and fixed fees on its Form ADV.

Page: https://find.wellspent.co/advisors/mark-zywiol/
Built from SEC adviser records and the firm's website; last checked October 30, 2026.

## Facts

- **Firm:** Stonebrook Private
- **Based in:** Northville, Michigan
- **Fee model (firm's Form ADV):** Percentage of assets; Fixed fees
- **Accepting new clients:** Yes (firm's website)
- **Assets under management (firm):** $937.0M across 4,146 accounts
- **Credentials:** CFP
- **Specialties:** Tax planning, Estate & legacy planning
- **Works with:** Multi-generational families
- **CRD:** 6645201 (https://adviserinfo.sec.gov/individual/summary/6645201)
- **SEC registration:** Investment adviser representative in MI
- **Exams passed:** Series 66 (2017)
- **Firm size:** 11 employees
- **Disclosures:** None reported
- **Website:** https://stonebrookprivate.com

## Frequently asked questions

### Is Mark Zywiol a fee-only financial advisor?

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

### How does Mark charge for financial advice?

Mark's firm, Stonebrook Private, reports charging a percentage of assets and fixed fees on its SEC Form ADV.

### Where is Mark Zywiol based?

Mark Zywiol is based in Northville, Michigan.

### What does Mark specialize in?

Mark's specialties include tax planning and estate & legacy planning. Mark works with multi-generational families.

### What credentials does Mark Zywiol hold?

Mark Zywiol holds the CFP credential.

### Is Mark Zywiol registered with the SEC?

Yes. Mark Zywiol is registered as an investment adviser representative in MI (CRD 6645201), per SEC Investment Adviser Public Disclosure data as of October 29, 2026.

### How much does Stonebrook Private manage?

Stonebrook Private reports $937.0M across 4,146 accounts in assets under management.

### How do I contact Mark Zywiol?

Through Mark's website, stonebrookprivate.com.

## Sources

- SEC adviser records (https://adviserinfo.sec.gov/individual/summary/6645201): 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
- The firm's website (https://stonebrookprivate.com/): specialties, clients served, and fees, checked October 30, 2026

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