Most states recognize taxes paid to other states and do not double tax (CA may be an exception). Further, the sale of shares in the corporate or LLC entity should not be treated as an event subject to a sales or use tax. I've never paid sales tax on purchase or sale of stock regardless the state where the company is located (either physically or operationally). I believe if states could get away with this, the stock markets would instantly collapse. Lastly, corporations trade assets routinely without paying sales or use tax. If large multinational companies do this routinely, it would be a double standard to do this to little guys.