Ethan Johnson is not listed as a control person, but directly owns between 10% and 25% of Big Sioux Financial.
Big Sioux Financial is an investment adviser based in Watertown, SD, registered with the SEC since 2020. It provides financial planning and investment management. Its clients include high-net-worth individuals, individual clients, and corporations and other businesses. Its regulatory assets under management total $235 million, as filed on 27 February 2026. Its fees, ownership and offices are on the firm’s profile.
- CRD
- 7117087
- Firm
- Big Sioux Financial · CRD 299593
- Role
- Co-Owner
- In role since
- May 1990 · 36 years
- Control person
- Not listed
- Direct ownership
- 10% to 25%
- Firm headquarters
- Watertown, SD
- Individual registration
- No current adviser record · SEC search
- Disciplinary history
- Not yet shown here · SEC record
Where does Ethan Johnson work?
Ethan Johnson has been Co-Owner of Big Sioux Financial, Inc. since May 1990.
How can I verify Ethan Johnson’s record?
Ethan Johnson’s role is listed on Big Sioux Financial, Inc.’s Form ADV, which the SEC’s adviser search (adviserinfo.sec.gov) publishes under the firm’s CRD 299593.
