In the fourth stage we see several changes affecting Goudsmit's expert role. During the mid 1990s, he held a full professorship at the Amsterdam Medical Centre, and the IAVI was a side project. After 2002 the balance started to shift. He moved to biotech firm Crucell in 2002, where he is now director of research and member of the board. He ended his board membership of the IAVI in 2004, and he swapped his full professorship for an honorary one.