Asset manager BlackRock's senior executive Mark Wiedman, who was touted to be a potential successor to CEO Larry Fink, is departing the firm, said two sources familiar with the matter.

BlackRock Inc. is elevating several senior executives to expand its business in the Americas and with key institutional clients, following the announced departure of Mark Wiedman, once seen as a potential successor to Chief Executive Officer Larry Fink.

BlackRock, Inc. (NYSE:BLK), the $157.1 billion asset management giant, disclosed in a recent SEC filing that Mark Wiedman, head of the Global Client Business, has resigned from his role, effective today.