On the day he made that post this information was not available. Besides, it was not the Bank of Utah that released the info. Now, on to the claim that "The said trip was made in conformity with all international aviation laws". The plane still is an American plane and subject to US laws. They are just renting it and can't fly it anywhere they want.
"To travel to Iran, the aircraft would typically need a license from the Treasury Department’s Office of Foreign Assets Control, the primary enforcer of U.S. sanctions against Iran.
The Office of Foreign Assets Control did not issue a license for the plane’s flight to Iran, according to two people briefed on the matter, raising questions about whether its flight had flouted U.S. law. Treasury officials declined to comment."
http://seattletimes.com/html/nationworld/2023416522_iranplanemysteryxml.html