Director receives 2,040 RSUs at Knife River (NYSE: KNF)

Rhea-AI Filing Summary

Knife River Corp director William J. Sandbrook received a grant of 2,040 restricted stock units (RSUs) of common stock. The award was made on May 20, 2026 at no cash purchase price and is compensation, not an open-market trade. The RSUs vest immediately before the company’s next annual meeting of stockholders, if he continues serving on the board through that date. Each RSU converts into one share of Knife River common stock upon vesting, and Sandbrook will own 7,735 shares directly after this award.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider SANDBROOK WILLIAM J

Role null

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	2,040	$0.00	--

Holdings After Transaction: Common Stock — 7,735 shares (Direct, null)

Footnotes (1)

1. [object Object]

Key Figures

RSU grant size: 2,040 shares Post-transaction holdings: 7,735 shares Grant price per share: $0.0000 per share +1 more

4 metrics

RSU grant size 2,040 shares Restricted stock units granted on May 20, 2026

Post-transaction holdings 7,735 shares Total Knife River common stock held directly after grant

Grant price per share $0.0000 per share Indicated as the transaction price for the RSU award

Transaction date May 20, 2026 Date of RSU grant to director William J. Sandbrook

Key Terms

restricted stock units (RSUs), annual meeting of stockholders, contingent right

3 terms

restricted stock units (RSUs) financial

"Represents restricted stock units (RSUs) that vest on the day immediately prior..."

Restricted stock units (RSUs) are a type of company promise to give employees shares of stock in the future, usually after certain conditions like working for a set time. They are like a gift promised today that you receive later, which can become valuable if the company's stock price goes up. RSUs matter because they are a way companies reward employees and can be a significant part of compensation.

annual meeting of stockholders financial

"...the date of the next Knife River Corporation annual meeting of stockholders..."

contingent right financial

"Each RSU represents the contingent right to receive one share..."

Form 4 Insider Transactions: What Each Field Means →

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

SANDBROOK WILLIAM J

(Last) (First) (Middle)

1150 WEST CENTURY AVENUE

(Street)

BISMARCK NORTH DAKOTA 58503

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
Knife River Corp [ KNF ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/20/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	05/20/2026		A		2,040(1)	A	$0.0000	7,735	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Represents restricted stock units (RSUs) that vest on the day immediately prior to the date of the next Knife River Corporation (the "issuer") annual meeting of stockholders occurring after the date of grant and subject to the reporting person continuing in service on the board of directors of the issuer through such vesting date. Each RSU represents the contingent right to receive one share of the issuer's common stock.

	/s/ Karl A. Liepitz, Power of Attorney	05/21/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

FAQ

What insider transaction did Knife River (KNF) report for William J. Sandbrook?

Knife River reported a grant of 2,040 restricted stock units (RSUs) of common stock to director William J. Sandbrook. This is a stock-based compensation award, not an open-market purchase or sale, and increases his potential equity stake when the RSUs vest.

When do William J. Sandbrook’s new RSUs at Knife River (KNF) vest?

The 2,040 RSUs granted to William J. Sandbrook vest on the day immediately before Knife River’s next annual meeting of stockholders. Vesting is conditioned on his continued service on the company’s board through that vesting date according to the filing footnote.

How many Knife River (KNF) shares will William J. Sandbrook hold after this Form 4 transaction?

Following the RSU grant, William J. Sandbrook will beneficially own 7,735 shares of Knife River common stock directly. This total reflects his holdings after the 2,040-share restricted stock unit award reported in the Form 4 insider filing for the director.

Is the Knife River (KNF) Form 4 for William J. Sandbrook a stock purchase or sale?

The Form 4 shows neither a market purchase nor sale. It reports a grant or award of 2,040 restricted stock units (RSUs) to director William J. Sandbrook as equity compensation, with no cash transaction price stated per share in the disclosure.

What does each restricted stock unit (RSU) granted by Knife River (KNF) represent?

Each RSU granted to William J. Sandbrook represents a contingent right to receive one share of Knife River common stock. The units convert into shares when they vest, assuming he remains on the board through the specified vesting date before the next annual meeting.