Are there limitations on my ability to sell all or part of a company established in conjunction with a treaty trader/investor visa?

The treaty trader/investor status (E) requires ownership to be held by nationals of a country which has a treaty of Friendship, Commerce, and Navigation (FCN) with the United States. If the company is sold in its entirety to persons of nationality different than the E holder, the company would no longer qualify as an E sponsor for that individual. If a partial interest in the company is sold, it is possible to maintain E visa status provided that the E principal's investment interest continues to be "substantial." This varies considerably with the size of the principal's investment relative to the total value of the company.