David Johnson is a control person of Big Sioux Financial and directly owns between 25% and 50% of it.
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
- 4095565
- Firm
- Big Sioux Financial · CRD 299593
- Role
- Co-Owner
- In role since
- August 1988 · 38 years
- Control person
- Yes
- Direct ownership
- 25% to 50%
- Firm headquarters
- Watertown, SD
- Individual registration
- No current adviser record · SEC search
- Disciplinary history
- Not yet shown here · SEC record
Where does David Johnson work?
David Johnson has been Co-Owner of Big Sioux Financial, Inc. since August 1988, and is a control person of the firm.
How can I verify David Johnson’s record?
David 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.
