knf-20250805

UNITED STATES SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

PURSUANT TO SECTION 13 OR 15 (d) OF THE SECURITIES

EXCHANGE ACT OF 1934

Date of Report (Date of earliest event reported) August 5, 2025

Knife River Corporation

(Exact name of registrant as specified in its charter)


(State or other jurisdiction of	(Commission File Number)	(I.R.S. Employer Identification No.)
incorporation)
Delaware	1-41642	92-1008893

1150 West Century Avenue

P.O. Box 5568

Bismarck, North Dakota 58506-5568

(Address of principal executive offices)

(Zip Code)

Registrant’s telephone number, including area code (701) 530-1400

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:


			☐			Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
			☐			Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
			☐			Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
			☐			Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:


(Title of each class)	(Trading Symbol(s))	(Name of each exchange on which registered)
Common Stock, $0.01 par value	KNF	New York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 or Rule 12b-2 of the Securities Exchange Act of 1934.

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02. Results of Operations and Financial Condition and

Item 7.01. Regulation FD Disclosure.

On August 5, 2025, Knife River Corporation (the "Company") issued a press release announcing second quarter 2025 earnings. A copy of the press release, which the Company is furnishing to the Securities and Exchange Commission, is attached as Exhibit 99 and incorporated by reference herein.

Item 9.01. Financial Statements and Exhibits.

(d) Exhibits.

Exhibit Number Description

99 Press release issued August 5, 2025, regarding second quarter 2025 earnings.

104 Cover page interactive data file (embedded within the Inline XBRL document)

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Knife River Corporation


Date August 5, 2025						By /s/ Nathan W. Ring
						Nathan W. Ring
						Vice President and Chief Financial Officer

Knife Riv Holding Co. filed SEC Form 8-K: Results of Operations and Financial Condition, Regulation FD Disclosure, Financial Statements and Exhibits