Life sciences recruitment firm RSA has promoted Nick Stephens as its new executive chairman, John Callagher as chief executive and Sarah Wilding as a non-executive director.

The appointments follow the retirement of RSA’s chairman, Roger Stephens and board director, Edna Stephens.

Nick Stephens has been a director of RSA since 1986 and was chief executive of the firm before becoming its new chairman. Callagher originally joined RSA as MD of the firm’s affiliate in Switzerland, before progressing to head of EMEA.

Previously Wilding was partner at Panthea Leadership, where she worked with organisations to maximise board and team performance.