Hi Valera sorry I am taking so long to answer your question.  I prefer to use the legal term of restricted from selling instead of frozen.

For International Investors under Regulation S, investors SANA tokens will be restricted from sell them for only 90 days.

For US investors under Regulations D,  investors SANA tokens will be restricted from selling them for 12 months.  That said, US investors are used to this.  It is the same case for investing into any private company.

THAT SAID, this is only for the initial investment. There are NO RESTRICTIONS, when someone buys them on an secondary exchange AND when we go over 2000 individual investors and we are considered a public company, there are no restrictions of when you sell.  You could buy it and 10 seconds later sell it on any exchange.

Gary