Preisig, who said she wants to take on a new role outside of FINMA, has headed the Strategic Services division since 2020.

FINMA, the Swiss government and the Swiss National Bank have come under fire for their perceived late intervention following the collapse of Credit Suisse and its subsequent rescue by larger rival UBS in March.

The regulator's secretary general, the head of international affairs and the head of communications have also recently resigned. A FINMA spokesperson explained that each resignation had specific reasons.

Angehrn announced this departure earlier this month citing health consequences stemming from the high stress and workload.

(Reporting by Oliver Hirt, Writing by Noele Illien; Editing by Sharon Singleton)