After the war, Rosenberger filed for restitution in a German proceeding, saying that he had to cede his 10-percent share in the company to Ferry Porsche, Dr. Porsche's son, in July of 1935 for just 3,000 marks in a year when Rosenberger's share of the company's 100,000 reichsmark profits alone should have been more than three times that amount. In 1949, Rosenberger sought a restitution payment of 180,000 marks for the true value of his stock and the loan he had made to the firm.