Katherine J. Marshall

Associate

Minneapolis

(612) 877-5375

(612) 260-9080

Recent News:

Am Law 100 Firm Cozen O’Connor Finalizes its Merger with Minneapolis-based Moss & Barnett

Cozen O’Connor has completed its acquisition by merger of Moss & Barnett, one of Minnesota’s leading law firms, adding more than 50 attorneys and bringing the overall roster to over 1,000 attorneys.

Katie focuses her practice on representing utility service providers in regulatory proceedings before local, state, and federal regulatory bodies.

Katie joined Cozen O'Connor in 2026 along with the highly regarded utilities group from Moss & Barnett. She earned her J.D. from the University of Minnesota Law School. While in law school, Katie was a regulatory affairs intern with a Minneapolis-based energy company and a legal extern with the Minnesota Public Utilities Commission.

Prior to entering the legal field, Katie was a geologist for the state geological survey, developing maps and models to support the management of Minnesota’s land, water, and mineral resources. She holds a master's degree in geology from Idaho State University and a bachelor’s degree in geology from Earlham College.

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Experience

News

Am Law 100 Firm Cozen O’Connor Finalizes its Merger with Minneapolis-based Moss & Barnett

January 05, 2026

Cozen O’Connor has completed its acquisition by merger of Moss & Barnett, one of Minnesota’s leading law firms, adding more than 50 attorneys and bringing the overall roster to over 1,000 attorneys.

Practice Areas

Education

  • University of Minnesota Law School, J.D., 2021
  • Idaho State University, M.S., 2013
  • Earlham College, B.A., 2011
  • Minnesota
  • North Dakota

Minnesota State Bar Association – Public Utilities Law Section

Minnesota Women Lawyers – Partner Leadership Council

Regulatory Committee – Minnesota Telecom Alliance