Several senior officials across key U.S. government agencies have announced departures, signaling notable leadership changes. Matt Hartman, the deputy head of the Cybersecurity Division at the Department of Homeland Security's Cybersecurity and Infrastructure Security Agency (CISA), is set to leave the government by the end of May after 15 years of service. Concurrently, the Department of Labor's long-serving human resources leader is exiting, with a staff member from the Department of Government Efficiency (DOGE) stepping in to assume HR responsibilities. Additionally, Kristin Johnson, a Democratic commissioner at the Commodity Futures Trading Commission (CFTC), has formally notified the President of her intention to step down later this year, contributing to a series of high-profile departures at the regulator.