By Victoria Bryan FRANKFURT (Reuters) – German airline Lufthansa dismissed the risk of it coming under undue foreign influence despite the percentage of non-Germans owning its shares rising to more than 40 percent, a move that could trigger a defensive buyback of its shares. It said an analysis of its shareholder register gave no reason to believe there was any immediate danger of excessive foreign control. It gave no further explanation in a statement on Tuesday, though its website said its biggest groups of shareholders after German investors were from the United States, Luxembourg, the Cayman Islands, Britain and Canada. Aside from a share buyback, other steps it could potentially take to fend off a threat of foreign control include a new share issue or requesting foreign shareholders sell their stock.