NorthWestern : 2022 Annuals Stockholders Meeting Presentation

Thompson Falls Dam - Montana

Annual Meeting of Shareholders

April 29, 2022

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NWE's CEO - Bob Rowe

Robert C. Rowe

• • Current position since August 2008

• • Board member since August 2008

• • 20-plus years energy and utility industry experience

• • Co-Chair of the Institute for Electric Innovation, an Institute of the Edison Foundation focused on advancing the adoption of innovative and efficient technologies among electric utilities and their technology partners that will transform the power grid; a member of the EEI Board of Directors Executive Committee; a member of the American Gas Association Board of Directors; Western Energy Institute past chair and current executive committee member

• • Former chairman and commissioner of the Montana Public Service Commission from 1993-2004, and also served as president of the National Association of Regulatory Utility Commissioners (NARUC)

Experienced & Engaged Board of Directors

Dana J. Dykhouse

• • Board Chair

• • Independent

• • Director since Jan. 2009

Anthony T. Clark

• • Committees: Nominating and Governance, Human Resources

• • Independent

• • Director since Dec. 2016

Jan R. Horsfall

• • Committees: Safety, Environmental, Technology and Operations (chair), Audit

• • Independent

• • Director since April 2015

Britt E. Ide

• • Committees: Safety, Environmental, Technology and Operations, Human Resources

• • Independent

• • Director since April 2017

Robert C. Rowe

• • Committees: None

• • Chief Executive Officer

• • Director since August 2008

Linda G. Sullivan

• • Committees: Audit (Chair), Safety, Environmental, Technology and Operations

• • Independent

• • Director since April 2017

Mahvash Yazdi

• • Committees: Human Resources (Chair), Safety, Environmental, Technology and Operations

• • Independent

• • Director since December 2019

Jeff W. Yingling

Strong Executive Team

Robert C. Rowe

• • Chief Executive Officer

• • Current position since 2008

Brian B. Bird

• • President and

  Chief Operating Officer

• • Current position since 2021 (formerly Chief Financial Officer since 2003)

Crystal D. Lail

• • Vice President and Chief Financial Officer

• • Current position since 2021 (formerly VP and Chief Accounting Officer since 2020)

Heather H. Grahame

• • General Counsel and Vice President of Regulatory and Federal Government Affairs

• • Current position since 2010

Curtis T. Pohl

• • Vice President - Distribution

• • Current position since 2003

Michael R. Cashell

• • Vice President - Transmission

• • Current Position since 2011

Bobbi L. Schroeppel

• • Vice President - Customer Care, Communications and Human Resources

• • Current Position since 2002

John D. Hines

• • Vice President - Supply/Montana Affairs

• • Current Position since 2011

Jeanne M. Vold

• • Vice President - Technology

• • Current Position since 2021 (formerly Business Technology Officer since 2012)

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NWE's Auditors - Deloitte & Touche LLP

• • Independent registered public accounting firm

• • Deloitte provides the following services for more than 20 industries:

  • • Risk & Financial Advisory

  • • Audit & Assurance

  • • Consulting

  • • Tax

  • • Merger & Acquisition

  • • Artificial Intelligence and Analytics

  • • Cloud

• • Deloitte and its subsidiaries have 80,000 professionals