- Mary Kay Lanthier was confirmed to the U.S. District Court for the District of Vermont on September 11, 2024.
- Previously, she was the supervising attorney in the Rutland County Public Defender’s Office, a role she had since 2007.
- Lanthier was previously a public defender with the Addison County Public Defender’s Office between 2000 to 2003.
- Lanthier was an associate and then a partner at Marsh & Wagner, PC, from 2003 to 2007 and an associate at Keiner & Dumont, PC, from 1998 to 2000.
- From 1996 to 1998, she clerked for the judges of the Vermont Trial Court in the Chittenden County and Addison County Courts.
- Lanthier received her J.D. from Northeastern University School of Law in 1996 and her B.A. from Amherst College in 1993.