# Ethan Rush

> Ethan Rush is a fee-only financial advisor at Sigma Advisors in St. Louis, Missouri. Ethan charges a flat fee or retainer and focuses on estate & legacy planning, tax planning and family wealth transfer.

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

## Facts

- **Firm:** Sigma Advisors
- **Based in:** St. Louis, Missouri
- **Fee model:** Flat fee or retainer
- **Assets under management (firm):** $65M across 12 accounts
- **Specialties:** Estate & legacy planning, Tax planning, Family wealth transfer
- **Works with:** Ultra high net worth, Multi-generational families
- **CRD:** 5655532 (https://adviserinfo.sec.gov/individual/summary/5655532)
- **SEC registration:** Investment adviser representative in MO
- **Exams passed:** Series 66 (2009)
- **Firm size:** 1 employee
- **Disclosures:** None reported
- **Website:** https://www.sigmallc.com

## Frequently asked questions

### Is Ethan Rush a fee-only financial advisor?

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

### How does Ethan charge for financial advice?

Ethan charges a flat fee or retainer.

### Where is Ethan Rush based?

Ethan Rush is based in St. Louis, Missouri.

### What does Ethan specialize in?

Ethan's specialties include estate & legacy planning, tax planning and family wealth transfer. Ethan works with ultra high net worth and multi-generational families.

### Is Ethan Rush registered with the SEC?

Yes. Ethan Rush is registered as an investment adviser representative in MO (CRD 5655532), per SEC Investment Adviser Public Disclosure data as of October 29, 2026.

### How much does Sigma Advisors manage?

Sigma Advisors reports $65M across 12 accounts in assets under management.

### How do I contact Ethan Rush?

Through Ethan's website, www.sigmallc.com.

## Sources

- SEC adviser records (https://adviserinfo.sec.gov/individual/summary/5655532): 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://www.sigmallc.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.