Hohauser, who been serving as a consultant at Exclusive Media, is a former CFO at Summit.
Friedman was CFO at NexTraq, where he oversaw the company's sale to Fleetcor Technologies.
Fernandez was CFO before being promoted to chief operating officer. CFO Patrick McGuiness is set to depart Nov. 27.
Thomas succeeds Joe Kaeser, who has been promoted to CEO. Thomas was the finance chief for industrial products.
Kress comes on board after a two-year search. She was CFO of a Cisco Systems unit.
Jonkers was CFO at Pervasive Software.