Treasury Secretary Janet Yellen announced Thursday the appointment of Andrea Gacki as director of the Financial Crimes Enforcement Network (FinCEN).

Gacki shifts to FinCEN from another arm of the Treasury Department, the Office of Foreign Assets Control (OFAC), which she had led as director since September 2018.

“During her time as director of OFAC, Andrea guided the office through major world events, including most recently its role countering Russia’s illegal and unprovoked war against Ukraine, where she helped design our unprecedented sanctions strategy,” Yellen said in a statement. “As FinCEN embarks on its most ambitious project in recent years—bringing transparency to corporate ownership and protecting the U.S. financial system—there’s no one I trust more to lead the office than Andrea.”

FinCEN on Jan. 1 is scheduled to launch its beneficial ownership registry, as required by the Corporate Transparency Act. The registry will mandate certain reporting companies to file basic information with the agency about who controls their finances.

To this point, setup of the registry has been led by Himamauli Das, who served as acting director of FinCEN. Das will continue in his role during the transition period and assist Gacki in her onboarding process, according to an agency press release.

“Treasury is deeply appreciative of Him for his dedication, professionalism, and leadership these past two years,” Under Secretary for Terrorism and Financial Intelligence Brian Nelson said in the release. “He steered the bureau through unprecedented times where the demands increased exponentially, and he achieved remarkable accomplishments during his tenure, including overseeing the bureau’s implementation of the Corporate Transparency Act.”

A successor for Gacki at OFAC, where she also previously served as deputy director, associate director for compliance and enforcement and assistant director for licensing, was not named.

“I am honored and excited to serve as the director of FinCEN,” she stated. “FinCEN plays a vital role in safeguarding the U.S. financial system, and I look forward to leading the FinCEN team in these important efforts.”