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Knife River Corp

For the period ended May 20, 2026. Filed Apr 6, 2026.

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What shareholders are asked to vote on at a company's meeting. It is where to find what directors and top executives are paid, and who owns the most shares.

May 20, 2026 · Filed Apr 6, 2026

Use the contents to explore the available documents and sections.

KNF$56.40-1.5%Stored close · as of Nov 6, 2026
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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 14A INFORMATION

Proxy Statement Pursuant to Section 14(a) of

the Securities Exchange Act of 1934

(Amendment No. )

Filed by the Registrantý

Filed by a party other than the Registrant¨

Check the appropriate box:

¨ Preliminary Proxy Statement

¨ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))

ý Definitive Proxy Statement

¨ Definitive Additional Materials

¨ Soliciting Material under §240.14a-12

Knife River Corporation

(Name of Registrant as Specified In Its Charter)

(Name of Person(s) Filing Proxy Statement, if other than the Registrant)

Payment of Filing Fee (Check all boxes that apply):

ý No fee required

¨ Fee paid previously with preliminary materials

¨ Fee computed on table in exhibit required by Item 25(b) per Exchange Act Rules 14a-6(i)(1) and 0-11

2026 Notice of Annual Meeting of

Stockholders and Proxy Statement

Annual Meeting

Wednesday, May 20, 2026

10:00 a.m. Central Daylight Saving Time

www.virtualshareholdermeeting.com/KNF2026

www.kniferiver.com

PO Box 5568Bismarck, ND 58506-5568Street Address:1150 West Century AvenueBismarck, ND 58506(701) 530-1400

April 6, 2026

Fellow Stockholders:

I invite you to attend our annual meeting on May 20, 2026 at 10:00 a.m. CDT online by visiting www.virtualshareholdermeeting.com/KNF2026, where you will have the opportunity to listen to the annual meeting live, submit questions, and vote. The annual meeting will be held entirely online live via audio webcast. Please check our website at www.knfproxy.com for additional information about our annual meeting.

During the annual meeting, we will hear the results of stockholder voting on the items outlined in this Proxy Statement, including election of two Class III directors, the advisory vote regarding the compensation paid to our named executive officers, and ratification of our independent auditors. I encourage you to promptly follow the instructions on your notice or proxy card to vote your shares on these items.

Knife River had a solid year in 2025, advancing key strategic initiatives and building momentum throughout the year. Entering 2026, we have record year-end backlog of $1 billion, which includes the opportunity to pull through our higher-margin materials. We will continue our efforts to optimize pricing and drive efficiencies at our plants, and we further expect to continue our strategic organic and inorganic growth activity. We believe we have the strategy and framework in place to achieve our financial goals and to continue delivering long-term stockholder value.

I appreciate your investment in Knife River, and I look forward to visiting with you on May 20, 2026.

Sincerely,

Brian R. Gray

President and Chief Executive Officer

Notice of Annual Meeting ofStockholders to be Held May 20, 2026

1150 West Century Avenue; P.O. Box 5568,

Bismarck, North Dakota, 58506-5568

April 6, 2026

NOTICE IS HEREBY GIVEN that the Annual Meeting of Stockholders (the annual meeting) of Knife River Corporation (the company) will be held on Wednesday, May 20, 2026, at 10:00 a.m. Central Daylight Saving Time. The annual meeting will be held entirely online live via audio webcast. You will be able to attend and participate in the annual meeting online by visiting www.virtualshareholdermeeting.com/KNF2026, where you will be able to listen to the annual meeting live, submit questions, and vote.

The annual meeting will be held for the following purposes:

Items of Business1.Election of two Class III directors;
2.Advisory vote to approve the compensation paid to the company’s named executive officers;
3.Ratification of the appointment of Deloitte & Touche LLP as the company’s independent registered public accounting firm for 2026; and
4.Transaction of any other business that may properly come before the annual meeting or any adjournment(s) thereof.
Record DateThe board of directors has set the close of business on March 27, 2026, as the record date for the determination of stockholders who will be entitled to notice of, and to vote at, the annual meeting and any adjournment(s) thereof.
Annual Meeting AttendanceAll stockholders, as of the record date of March 27, 2026, are cordially invited to attend the annual meeting. Whether or not you plan to attend the annual meeting online, please vote your shares as instructed in the Notice of Availability of Proxy Materials (Notice), over the Internet, or by telephone after your receipt of hard copies of the proxy materials, as promptly as possible. You may also request a paper Proxy Card, which will include a postage-paid envelope, to submit your vote by mail, as described in the Notice. You may also vote your shares online and submit your questions during the annual meeting. Instructions on how to vote while participating at the annual meeting live via the Internet are posted at www.virtualshareholdermeeting.com/KNF2026 and can be found in the Proxy Statement in the section entitled “Information About the Annual Meeting - How to Attend and Vote at the Annual Meeting.” Stockholders of record who attend the annual meeting online may withdraw their proxy and vote online at the annual meeting if they so desire.
Proxy MaterialsThis Proxy Statement will first be sent to stockholders requesting written materials on or about April 6, 2026. The Notice will also be sent to certain stockholders on or about April 6, 2026. The Notice contains basic information about the annual meeting and instructions on how to view the company’s proxy materials and vote online.

The list of stockholders entitled to vote at the annual meeting will be available for examination 10 days prior to the annual meeting at the company’s principal executive office, 1150 West Century Avenue, P.O. Box 5568, Bismarck, North Dakota, 58506-5568.

By order of the Board of Directors,

Important Notice Regarding the Availability of Proxy Materials for the Stockholders Meeting to be held on May 20, 2026.The 2026 Notice of Annual Meeting and Proxy Statement and 2025 Annual Report to Stockholders are available at www.knfproxy.com

Karl A. Liepitz

Vice President, Chief Legal Officer and Secretary

PROXY STATEMENT SUMMARY · EXECUTIVE COMPENSATION (continued)
Annual Meeting Information1Compensation Policies and Practices as They Relate to Risk Management60
Company Overview4
Business Performance Highlights4Executive Compensation Tables62
Corporate Governance Practices6Summary Compensation Table62
Compensation Highlights7Grants of Plan-Based Awards64
Sustainability7Outstanding Equity Awards at Fiscal Year-End66
BOARD OF DIRECTORSOption Exercises and Stock Vested67
Item 1. Election of Directors12Pension Benefits67
Director Nominees14Nonqualified Deferred Compensation69
Board Composition and Effectiveness21Potential Payments upon Termination or Change in Control70
Board Skills and Characteristics22
CORPORATE GOVERNANCECEO Pay Ratio Disclosure75
Director Independence25Pay Versus Performance76
Oversight of Sustainability25AUDIT MATTERS
Stockholder Engagement27Item 3. Ratification of the Appointment of Deloitte & Touche LLP as the Company’s Independent Registered Public Accounting Firm for 202680
Stockholder Communications with the Board28
Board Leadership Structure28
Board’s Role in Risk Oversight28Annual Evaluation and Selection of Deloitte & Touche LLP80
Board Meetings and Committees31
Additional Governance Features35Audit Fees and Non-Audit Fees81
Corporate Governance Materials38Policy on Audit Committee Pre-Approval of Audit and Permissible Non-Audit Services82
Related Person Transaction Disclosure38
COMPENSATION OF NON-EMPLOYEE DIRECTORSAudit Committee Report83
Director Compensation39INFORMATION ABOUT THE ANNUAL MEETING
SECURITY OWNERSHIPWho Can Vote84
Security Ownership Table42Notice and Access84
Stock Hedging and Pledging Policy42How to Vote85
Greater than 5% Beneficial Owners43How to Attend and Vote at the Annual Meeting86
EXECUTIVE COMPENSATIONTechnical Difficulties86
Item 2. Advisory Vote to Approve the Compensation Paid to the Company’s Named Executive Officers44Revoking Your Proxy or Changing Your Vote87
Discretionary Voting Authority87
Information Concerning Executive Officers45Voting Standards88
Compensation Discussion and Analysis46Proxy Solicitation88
Executive Summary46Householding of Proxy Materials89
Compensation Framework49Knife River Corporation 401(k) Plan89
Compensation for Named Executive Officers50Why Hold a Virtual Annual Meeting89
Other Benefits54Tabulation of Votes89
Compensation Decision Process56Annual Meeting Results89
Compensation Governance57Stockholder Proposals, Director Nominations, and Other Items of Business for 2027 Annual Meeting90
Compensation Committee Report59

Cautionary note regarding forward-looking statements. This Proxy Statement contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended (Exchange Act). Forward-looking statements are all statements other than statements of historical fact, including without limitation those statements that are identified by the words “anticipates,” “estimates,” “expects,” “intends,” “plans,” “predicts” and similar expressions, and include statements concerning plans, projections, objectives, goals, strategies, future events or performance, and underlying assumptions (many of which are based, in turn, upon further assumptions) and other statements that are other than statements of historical facts. From time to time, the company may publish or otherwise make available forward-looking statements of this nature, including statements related toour Competitive EDGE initiatives (EDGE) implemented to improve margins and to execute on other strategic initiatives aimed at generating long-term profitable growth, shareholder value creation, expected long-term goals, expected backlog margin, acquisitions, financing plans, and expected federal and state funding for infrastructure or other proposed strategies.

Forward-looking statements involve risks and uncertainties, which could cause actual results or outcomes to differ materially from those expressed. Our expectations, beliefs and projections are expressed in good faith and are believed to have a reasonable basis, including without limitation, management’s examination of historical operating trends, data contained in our records and other data available from third parties. Nonetheless, our expectations, beliefs or projections may not be achieved or accomplished and changes in such assumptions and factors could cause actual future results to differ materially.

Any forward-looking statement contained in this document speaks only as of the date on which the statement is made, and we undertake no obligation to update any forward-looking statement or statements to reflect events or circumstances that occur after the date on which the statement is made or to reflect the occurrence of unanticipated events, except as required by law. New factors emerge from time to time, and it is not possible for management to predict all the factors, nor can it assess the effect of each factor on our business or the extent to which any factor, or combination of factors, may cause actual results to differ materially from those contained in any forward-looking statement. All forward-looking statements, whether written or oral and whether made by or on behalf of our company, are expressly qualified by the risk factors and cautionary statements reported in the section entitled “Item 1A. Risk Factors” in Part I of the company’s 2025 Annual Report on Form 10-K (2025 Form 10-K) and subsequent filings with the United States Securities and Exchange Commission (SEC).

ContentsView on SEC.gov

The text of this filing, as the company filed it with the SEC, without its images or exhibits. This is not investment advice.