Kate Mather

Associate

She / Her

Office

San Francisco

Phone

+1 415 293 5902


Kate Mather helps clients navigate a range of complex challenges at the intersection of law, policy, and regulation. Kate's practice spans high-stakes litigation, government-led investigations, and emerging regulatory issues at the state, federal, and international levels. As a member of the Global Hearing Preparation Practice, she draws on her legal training and journalism background to prepare clients for consequential appearances before government officials worldwide. She is also a member of the Government Controversies and Public Policy Litigation team.

Before joining Jenner & Block, Kate clerked for two years in the US District Court for the Northern District of California. She earned her JD from Berkeley Law, where she was Managing Editor of the California Law Review and Co-President of Women of Berkeley Law. During law school, she gained practical and policy experience through internships with the ACLU of Northern California, the East Bay Community Law Center, and The Policing Project.

Prior to her legal career, Kate was a journalist at the Los Angeles Times, where she was part of a Pulitzer Prize–winning team in 2016.

Credentials

  • California, 2021

  • University of California, Berkeley School of Law, JD, 2021
  • University of Southern California, BA, 2011

  • US District Court, Northern District of California, 2025

  • Hon. William H. Orrick, US District Court, Northern District of California, 2021-2023

Kate Mather helps clients navigate a range of complex challenges at the intersection of law, policy, and regulation. Kate's practice spans high-stakes litigation, government-led investigations, and emerging regulatory issues at the state, federal, and international levels. As a member of the Global Hearing Preparation Practice, she draws on her legal training and journalism background to prepare clients for consequential appearances before government officials worldwide. She is also a member of the Government Controversies and Public Policy Litigation team.

Before joining Jenner & Block, Kate clerked for two years in the US District Court for the Northern District of California. She earned her JD from Berkeley Law, where she was Managing Editor of the California Law Review and Co-President of Women of Berkeley Law. During law school, she gained practical and policy experience through internships with the ACLU of Northern California, the East Bay Community Law Center, and The Policing Project.

Prior to her legal career, Kate was a journalist at the Los Angeles Times, where she was part of a Pulitzer Prize–winning team in 2016.

  • California, 2021

  • University of California, Berkeley School of Law, JD, 2021
  • University of Southern California, BA, 2011

  • US District Court, Northern District of California, 2025

  • Hon. William H. Orrick, US District Court, Northern District of California, 2021-2023

Overview

Kate Mather helps clients navigate a range of complex challenges at the intersection of law, policy, and regulation. Kate's practice spans high-stakes litigation, government-led investigations, and emerging regulatory issues at the state, federal, and international levels. As a member of the Global Hearing Preparation Practice, she draws on her legal training and journalism background to prepare clients for consequential appearances before government officials worldwide. She is also a member of the Government Controversies and Public Policy Litigation team.

Before joining Jenner & Block, Kate clerked for two years in the US District Court for the Northern District of California. She earned her JD from Berkeley Law, where she was Managing Editor of the California Law Review and Co-President of Women of Berkeley Law. During law school, she gained practical and policy experience through internships with the ACLU of Northern California, the East Bay Community Law Center, and The Policing Project.

Prior to her legal career, Kate was a journalist at the Los Angeles Times, where she was part of a Pulitzer Prize–winning team in 2016.

Credentials

Admissions

  • California, 2021

Education

  • University of California, Berkeley School of Law, JD, 2021
  • University of Southern California, BA, 2011

Court Admissions

  • US District Court, Northern District of California, 2025

Clerkships

  • Hon. William H. Orrick, US District Court, Northern District of California, 2021-2023

Kate Mather helps clients navigate a range of complex challenges at the intersection of law, policy, and regulation. Kate's practice spans high-stakes litigation, government-led investigations, and emerging regulatory issues at the state, federal, and international levels. As a member of the Global Hearing Preparation Practice, she draws on her legal training and journalism background to prepare clients for consequential appearances before government officials worldwide. She is also a member of the Government Controversies and Public Policy Litigation team.

Before joining Jenner & Block, Kate clerked for two years in the US District Court for the Northern District of California. She earned her JD from Berkeley Law, where she was Managing Editor of the California Law Review and Co-President of Women of Berkeley Law. During law school, she gained practical and policy experience through internships with the ACLU of Northern California, the East Bay Community Law Center, and The Policing Project.

Prior to her legal career, Kate was a journalist at the Los Angeles Times, where she was part of a Pulitzer Prize–winning team in 2016.

Credentials

  • California, 2021

  • University of California, Berkeley School of Law, JD, 2021
  • University of Southern California, BA, 2011

  • US District Court, Northern District of California, 2025

  • Hon. William H. Orrick, US District Court, Northern District of California, 2021-2023

Kate Mather helps clients navigate a range of complex challenges at the intersection of law, policy, and regulation. Kate's practice spans high-stakes litigation, government-led investigations, and emerging regulatory issues at the state, federal, and international levels. As a member of the Global Hearing Preparation Practice, she draws on her legal training and journalism background to prepare clients for consequential appearances before government officials worldwide. She is also a member of the Government Controversies and Public Policy Litigation team.

Before joining Jenner & Block, Kate clerked for two years in the US District Court for the Northern District of California. She earned her JD from Berkeley Law, where she was Managing Editor of the California Law Review and Co-President of Women of Berkeley Law. During law school, she gained practical and policy experience through internships with the ACLU of Northern California, the East Bay Community Law Center, and The Policing Project.

Prior to her legal career, Kate was a journalist at the Los Angeles Times, where she was part of a Pulitzer Prize–winning team in 2016.

  • California, 2021

  • University of California, Berkeley School of Law, JD, 2021
  • University of Southern California, BA, 2011

  • US District Court, Northern District of California, 2025

  • Hon. William H. Orrick, US District Court, Northern District of California, 2021-2023

Overview

Kate Mather helps clients navigate a range of complex challenges at the intersection of law, policy, and regulation. Kate's practice spans high-stakes litigation, government-led investigations, and emerging regulatory issues at the state, federal, and international levels. As a member of the Global Hearing Preparation Practice, she draws on her legal training and journalism background to prepare clients for consequential appearances before government officials worldwide. She is also a member of the Government Controversies and Public Policy Litigation team.

Before joining Jenner & Block, Kate clerked for two years in the US District Court for the Northern District of California. She earned her JD from Berkeley Law, where she was Managing Editor of the California Law Review and Co-President of Women of Berkeley Law. During law school, she gained practical and policy experience through internships with the ACLU of Northern California, the East Bay Community Law Center, and The Policing Project.

Prior to her legal career, Kate was a journalist at the Los Angeles Times, where she was part of a Pulitzer Prize–winning team in 2016.

Credentials

Admissions

  • California, 2021

Education

  • University of California, Berkeley School of Law, JD, 2021
  • University of Southern California, BA, 2011

Court Admissions

  • US District Court, Northern District of California, 2025

Clerkships

  • Hon. William H. Orrick, US District Court, Northern District of California, 2021-2023

News and Insights

Publications

"DC Circuit Undercuts Congress's Subpoena Power: Important New Authority for Targets of Congressional Investigations," National Law Journal

In the National Law Journal, Congressional Investigations Co-Chair Emily Loeb, Special Counsel David Manners-Weber, and Associate Kate Mather examine a recent DC Circuit decision that gives fresh weight to 2020 Supreme Court dicta on common-law privileges in congressional investigations.

July 30, 2026