English to German Law/Patents Law: Contract(s) employment contract

Aus einem Geschäftsführervertrag (Geheimhaltungsklausel):

Mr. AB undertakes to maintain the strictest confidence regarding all business matters that come to his knowledge within the framework of his position, especially regarding individual company appointments, manufacturing and processing systems and the level of his own salary, with third parties and also to *unbidden company dependants*.

Vielen Dank im Voraus!