Financial Crimes Enforcement Network (FinCEN) Director Kenneth A. Blanco Friday announced several leadership changes impacting the bureau. Blanco announced he will depart FinCEN on April 9, after serving as the organization’s director since December 2017.

Michael Mosier, former FinCEN Deputy Director and current Counselor to the Deputy Secretary of the Treasury, will return to FinCEN as Acting Director. AnnaLou Tirol, former Associate Director of FinCEN’s Strategic Operations Division, is serving as FinCEN Deputy Director.

Mosier will serve as Acting Director effective April 11. He most recently served as Counselor to the Deputy Secretary of the Treasury, a role he assumed last month after serving as FinCEN’s Deputy Director and first Digital Innovation Officer. Mosier previously worked at the cryptocurrency analytics, compliance, and investigations firm Chainalysis, where he was Chief Technical Counsel.

Tirol is now serving as Deputy Director. In this capacity she assists in overseeing FinCEN’s wide-ranging work to enhance the national security of the United States.

She joined FinCEN in September 2019, serving as Associate Director of the Strategic Operations Division, where she worked extensively to promote FinCEN’s strategic partnerships with government and private industry stakeholders, both domestically and internationally.