Everytown News: Former ATF Leader Joins Everytown

Marianna Mitchem, formerly the Associate Assistant Director of Field Operations (Industry Operations) at the Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF), has joined Everytown for Gun Safety, an organization founded by former New York City mayor Michael Bloomberg. This information was provided by a former ATF senior official who requested anonymity.

According to this source, Mitchem has engaged with her former colleagues since joining Everytown, with a focus on issues related to Glock and similar handguns.

Mitchem’s career at ATF began in 2005 as an Industry Operations Investigator (IOI), responsible for inspecting firearms retailers to ensure compliance with record-keeping and inventory standards. She did not serve as an armed Special Agent during her tenure.

In 2011, Mitchem was promoted to field supervisor, and by 2014, she led Industry Operations for ATF’s Phoenix Field Division. Her move to Washington, D.C. came in 2017 when she became deputy chief of Field Management Staff; she was subsequently promoted to Chief in 2018.

By 2019, Mitchem served as ATF’s deputy chief of staff, reporting directly to the agency’s director, and in 2020, she advanced to chief of the Firearms and Explosives Industry Division. Her final position at ATF was Associate Assistant Director of Field Operations (Industry Operations), which she held from March 2024 until departing in May 2025.

The former ATF senior official described Mitchem as intelligent and an effective communicator, also noting that she holds strong views regarding firearm regulation.