奈夫河建材 KNF

Mr. Brian R. Gray, Director, President and Chief Executive Officer. Professional Highlights: President of the company since March 2023 and chief executive officer since May 2023. Mr. Gray led the implementation of Knife River's EDGE strategy - the company's plan for driving long-term, profitable growth - and continues to lead the execution of the strategy. As CEO, Mr. Gray champions the company's four core values: People, Safety, Quality and the Environment, and has been instrumental in applying those values to the company's sustainable business practices; Region president of the company's Northwest segment from January 2012 to December 2022, where he led the acquisition of eight companies and was influential in the development of the Knife River Training Center and corporate-wide safety, training and sustainability programs. Mr. Gray also established the company's coaching clinic, its Life at Knife recruiting effort and the expansion of its Training and Development department. Other Experience: Member of the board of directors of the National Ready Mixed Concrete Association, an industry association, since March 2022; member of the board of directors from March 2018 to March 2021; member of the executive committee for one-year terms from 2020 to 2021, 2022 to 2023, and a new term for 2024 to 2025; Member of the board of directors of Oregon State University's Construction Education Foundation from 2012 to present; president for a one-year term in 2022; and vice president for a one-year term in 2020. Mr. Gray was inducted as a member of the academy of distinguished engineers and was the recipient of the Oregon Stater Award in 2022, which recognizes alumni who have a profound impact on the engineering profession; Member of the board of directors of the Associated General Contractors Oregon-Columbia chapter, an industry association, since 2007; president from 2017 to 2018; first vice president from 2016 to 2017; second vice president from 2015 to 2016; and secretary from 2014 to 2015.

Mr. Hastings was appointed vice president and chief operating officer of the company, effective May 31, 2023. Prior to that, he was president and chief executive officer of WBI Energy, Inc., an MDU Resources subsidiary and natural gas transportation provider, from October 2017 until May 2023. Prior to that, he was vice president of business development and operations support of Knife River Corporation (now known as KRC Materials, Inc.), from January 2012 until October 2017; and vice president of corporate development from January 2007 until January 2012.

Mr. Liepitz was appointed vice president, chief legal officer and secretary of the company, effective May 31, 2023. Prior to that, he was vice president, general counsel and secretary of MDU Resources, an energy delivery and construction services business, from February 2021 until May 2023. Prior to that, he was assistant general counsel and assistant secretary of MDU Resources, from January 2017 until February 2021; and senior attorney and assistant secretary from January 2016 until January 2017. He held legal positions of increasing responsibility with MDU Resources starting in August 2003.

Mr. Pladsen was appointed vice president and chief excellence officer of the company, effective January 1, 2025. Prior to that, he was vice president of support services of the company, from May 31, 2023 to December 2024. He has oversight of information technology, environmental management, capital budgeting and national account functions. He joined Knife River in 2007 as director of information technology, with a focus on deploying standard information systems and business processes across the Knife River operating companies. In 2012, Mr. Pladsen began overseeing the capital budgeting process and national account programs in addition to his information technology role. In 2015, Mr. Pladsen also took on a leadership role of Knife River's safety and environmental programs. He was named vice president of operations support of Knife River Corporation (now known as KRC Materials, Inc.) in January 2020, and added the responsibility of the corporate training program, along with the design and construction of the Knife River Training Center.

Ms. Patricia L. Moss, Independent Director. Professional Highlights: President and chief executive officer of Cascade Bancorp, a financial holding company, from 1998 to January 2012; chief executive officer of Cascade Bancorp's principal subsidiary, Bank of the Cascades, from 1998 to January 2012, serving also as president from 1998 to 2003; and chief operating officer, chief financial officer and secretary of Cascade Bancorp from 1987 to 1998. Other Experience: Former director of publicly traded MDU Resources, an energy delivery and construction services business, from November 2003 until May 2023; Vice chair of the Oregon Investment Council, which oversees the investment and allocation of all state of Oregon trust funds, from December 2018 to March 2021, including a member of the investment committee; Director of First Interstate BancSystem, Inc., a publicly traded financial services holding company, since May 2017, including a member of the compensation and human capital committee, and the governance and nominating committee; Director of Cascade Bancorp and Bank of the Cascades from 1993, and vice chair from January 2012 until May 2017, when Cascade Bancorp merged into First Interstate BancSystem, Inc., and became First Interstate Bank; Chair of the Bank of the Cascades Foundation Inc. from 2014 to July 2018; co-chair of the Oregon Growth Board, a state board created to improve access to capital and create private-public partnerships, from May 2012 through December 2018; A former member of the Board of Trustees for the Aquila Group of Funds, whose core business is mutual fund management and provision of investment strategies to fund shareholders, from January 2002 to May 2005 (one fund) and from June 2015 to 2024 (three funds); Former director of the Oregon Investment Fund Advisory Council, a state-sponsored program to encourage the growth of small businesses in Oregon; the Oregon Business Council, with a mission to mobilize business leaders to contribute to Oregon's quality of life and economic prosperity; the North Pacific Group, Inc., a wholesale distributor of building materials, industrial, and hardwood products; and Clear Choice Health Plans Inc., a multi-state insurance company. Other Current Public Boards: First Interstate BancSystem, Inc.

Mr. German Carmona-Alvarez, Independent Director. Professional Highlights: Global president of digital consulting of Wood PLC, Aberdeen, United Kingdom, a consulting and engineering company, since January 2023, and global president of applied intelligence from August 2021 through December 2022. Director of Wood PLC USA, Houston, Texas, the United States affiliate of Wood PLC, since 2022; Senior vice president and global digital practice leader of NEORIS, a technology and digital strategy consulting firm with presence in 27 countries focusing on the design strategy and execution of agile digital transformation programs, from March 2019 to July 2021; Executive vice president of finance, information technology and shared services of CEMEX Inc., a global building materials company from 2016 to 2019; senior vice president of continuous improvement and commercial strategy from 2014 to 2016; senior vice president of aggregates and mining resources from 2012 to 2014; global vice president of organization, compensation and benefits from 2009 to 2012; global vice president of human resources planning and development from 2006 to 2009; corporate vice president of human capital from 2004 to 2006; Senior principal of strategy and transformation of The Boston Consulting Group, a general management consulting firm that practices in business strategy, from 2000 to 2004. Other Experience: Former director of publicly traded MDU Resources, an energy delivery and construction services business, from November 2022 until May 2023; Former board chair of Strata.ai, a strategy and venture building firm focused on decision science, artificial intelligence and augmented reality, from 2020 to 2022; Former board of trustees of ITESM/Tec Milenio, a private institution of higher education, from 2010 to 2017.Principal of strategy and operations at Booz Allen Hamilton, a global management and technology consulting firm, from 1993 to 2000.

Mr. William J. Sandbrook, Independent Director. Professional Highlights: President of U.S. Concrete, Inc., formerly a publicly traded construction materials supplier, from August 2011 to April 2019; CEO and director from August 2011 to April 2020; director from April 2020 to May 2021; chairman of its board of directors from May 2018 to April 2020; and vice chairman from September 2017 to May 2018; Chief executive officer of Oldcastle Inc.'s Products and Distribution Group, an integrated supplier of construction materials and services, from June 2008 to August 2011; chief executive officer of Oldcastle's Architectural Products Group, responsible for Oldcastle's U.S. and Canadian operations, as well as CRH plc's business in South America, from 2006 to June 2008; and president of Oldcastle Materials West Division from 2003 to 2006; Chairman and Co-CEO of Andretti Acquisition Corp., formerly a publicly traded special purpose acquisition company, from January 2022 to April 2024; Executive chairman and chairman of the board of Andretti Acquisition Corp. II, a publicly traded special purpose acquisition company, since September 2024.1 Other Experience: Director of Comfort Systems USA, Inc., a publicly traded mechanical, electrical, and plumbing services provider, since April 2018, where he previously served as a member of the audit committee, and currently serves as a member of the compensation and human capital and nominating, governance and sustainability committees; Chair of the National Ready Mixed Concrete Association, an industry association, from March 2019 to March 2020. Mr. Sandbrook was awarded the William B. Allen award from the National Ready Mixed Concrete Association in March 2018 in recognition of his commitment to the concrete industry; Inducted to the Pit & Quarry Hall of Fame in 2018, which recognizes individuals who have made significant contributions to the aggregate industry. Other Current Public Boards: Comfort Systems USA, Inc.; Andretti Acquisition Corp. II (a special purpose acquisition company).

On June 27, 2024, the Board of Directors of the company appointed Patricia Chiodo to the Board as a Class II director, effective June 27, 2024. Professional Highlights: Chief financial officer of Verra Mobility Corporation, a publicly traded smart mobility technology solutions and services company, from June 2015 to July 2022; Co-president and chief financial officer of Origami Owl, LLC, a custom jewelry company, from September 2013 to April 2015; Chief financial officer and senior vice president of RSC Holdings, Inc., formerly a publicly traded construction and industrial equipment rental company, from October 2010 to April 2012; vice president and controller from April 2005 to August 2010; and assistant controller from 2002 to April 2005. Other Experience: Director of UNS Energy Corporation, a vertically integrated utility services holding company, since February 2022, and chair of the audit committee since July 2024; Director of Embark Technology, Inc., formerly a publicly traded autonomous trucking software company, from September 2021 to August 2023, including chair of the audit committee and a member of the compensation committee; Director of the advisory board of The Crosby Group, a lifting and rigging equipment company, from June 2019 to January 2023, including a member of the audit committee; Director of Acme Lift Company, LLC, a wholesale rental equipment company, from March 2013 to March 2015.

On May 20, 2026, Marney L. Kadrmas was named Senior Vice President of Financial Strategy, instead of her former title as Vice President and Chief Accounting Officer, effective as of May 21, 2026. Ms. Kadrmas was appointed vice president and chief accounting officer of the company, effective February 28, 2025. Prior to that, she was chief accounting officer of the company, effective May 31, 2023. Ms. Kadrmas previously served as vice president, region controller and assistant secretary of the company's subsidiary, Knife River Corporation - Northwest, from January 2022 until May 2023; and region controller and assistant secretary from July 2014 to December 2021. Prior to that, she was director of accounting for Knife River Corporation (now known as KRC Materials, Inc.) from 2012 to 2014; and financial planning and reporting manager from 2005 to 2012.

On May 20, 2026, the board of directors of Knife River Corporation appointed Peggy S. Rebstock, the Company's current Vice President of Financial Planning and Analysis, to serve as the Vice President, Chief Accounting Officer and Controller of the Company, effective May 21, 2026. Ms. Rebstock, age 53, was appointed Vice President of Financial Planning and Analysis of the Company, effective October 6, 2024. She previously served as Region Controller and Assistant Secretary of the Company's subsidiary, Knife River Corporation - South, from February 1, 2022 until October 5, 2024; and Region Controller and Assistant Secretary of the Company's subsidiary, Jebro Incorporated, from July 3, 2017 until February 21, 2022.

Ms. LaChapelle was appointed vice president and chief people officer of the company, effective April 19, 2025. Prior to that, she was vice president of human resources of the company from January 1, 2024 to April 18, 2025. Ms. LaChapelle previously served as senior director of human resources of the company from May 2023 to December 2023; and vice president - administration of the company's subsidiary, Knife River Corporation - Northwest, from January 2022 until May 2023. Prior to that, she was the director of human resources from September 2008 to January 2022; and human resources manager from August 2005 to September 2008 of Knife River Corporation - Northwest.