Federal jurisdiction over the securities transaction arises from the purchaser's acceptance of irrevocable liability; the fact that a foreign entity might not ultimately be held liable for the events arising from the transaction does not preclude the court's jurisdiction over a purchase of a non-ownership beneficial interest in foreign stock by means of a domestic alternative trading system.
http://cdn.ca9.uscourts.gov/datastore/opinions/2018/07/17/16-56058.pdf
Since 2011. An occasional commonplacing of the U.S. Circuit Courts of Appeal.
Neither an authoritative statement of the law nor legal advice. Quick work.