In addition to any other activities which may not constitute doing intrastate business in this State, for the purposes of this article, the following activities of a foreign corporation do not constitute doing intrastate business in this State:
(1) Maintaining, defending, or settling an action, suit, claim, dispute, or administrative or arbitration proceeding;
(2) Holding meetings of its directors or stockholders or carrying on other activities which concern its internal affairs;
(3) Maintaining bank accounts;
(4) Maintaining offices or agencies for the transfer, exchange, and registration of its securities;
(5) Appointing and maintaining trustees or depositaries with respect to its securities;
(6) Transacting business exclusively in interstate or foreign commerce; and
(7) Conducting an isolated transaction not in the course of a number of similar transactions.