Privacy protection is one of the outstanding benefits of having a trust in South Dakota. 

In addition, ATC has strict policies and procedures with respect to the financial privacy of all clients of our trust company. 


Our Privacy Policy

South Dakota Trust Administration Office

Argonne Trust Company, Inc.

4418 S. Technology Drive

Sioux Falls, SD 57106



(605) 274-3336



Or use our contact form.


Business Hours

9-5 CST

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