SD · United States310K+ registered entities290 SEC-listed companies
South Dakota Companies — SEC EDGAR Data
South Dakota has become a major financial incorporation hub — no state income tax, no corporate income tax, no personal income tax, and strong trust and asset protection laws. Citibank, Wells Fargo, and US Bancorp have major credit card operations in Sioux Falls. The state is the preferred domicile for dynasty trusts and family offices.
Incorporation note — Top trust and asset protection state. No income, corporate, or capital gains tax. Dynasty trust hub.
Search South Dakota companiesRegistered entities
310K+
SEC-listed companies
290+
Primary registry
SEC EDGAR
State registry
South Dakota Secretary
Notable South Dakota Companies
Citibank (credit card ops)Wells Fargo (credit card ops)Raven IndustriesSanford Health (private)Northwest Airlines (ops)
What SEC data is available for South Dakota companies?
✓Company name & CIK number
✓State of incorporation
✓SIC industry code
✓Fiscal year end date
✓Ticker symbol (if listed)
✓10-K annual report filings
✓10-Q quarterly financials
✓8-K material event filings
✓XBRL structured financial data
✓Revenue & net income history
✓Institutional holdings (13F)
✓Insider ownership & transactions
South Dakota Company Registry
State registry: South Dakota Secretary of State
Federal registry: SEC EDGAR — all publicly listed companies file 10-K, 10-Q, 8-K, and proxy statements regardless of state of incorporation.