Activist investor Nelson Peltz and his firm are seeking more than two seats on Disney’s board, according to a person familiar with the matter, setting the stage for a proxy fight. Trian Fund Management, which Peltz co-founded, said Thursday morning that it “intends to take our case for change directly to shareholders.” Disney, for its part, suggested the proxy fight stemmed from a personal grudge held by one of Peltz’s allies, former Marvel boss Ike Perlmutter. Trian said Disney earlier in th...