Rosenberg was most recently head of corporate affairs at Block, a payments company owned by Jack Dorsey. : Rosenberg was most recently head of corporate affairs at Block, a payments company owned by Jack Dorsey. SAN FRANCISCO: Wells Fargo has named former JPMorgan Chase executive Jason Rosenberg as head of public affairs, effective April 15. Reporting to CEO Charlie Scharf, Rosenberg will be responsible for corporate communications, corporate marketing, government relations and public policy, philanthropy and community impact and sustainability groups, according to a Wells Fargo statement.