Knife River director granted 2,040 RSUs

Chiodo Patricia reported acquisition or exercise transactions in this Form 4 filing.

Rhea-AI Filing Summary

Chiodo Patricia reported acquisition or exercise transactions in this Form 4 filing.

Knife River Corp director Patricia Chiodo received a stock-based compensation grant in the form of restricted stock units. On the reported date, she was awarded 2,040 RSUs, each representing the right to receive one share of Knife River common stock at no purchase price.

These RSUs vest on the day immediately before the company’s next annual meeting of stockholders, as long as she continues serving on the board through that date. After this grant, her direct holdings reported in this filing total 5,553 shares, reflecting a modest, routine increase in her equity-based compensation position.

Insider Trade Summary

Grant/Award: 2,040 shares

Grant/Award 1 txn

Insider Chiodo Patricia

Role Director

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

Holdings After Transaction: Common Stock — 5,553 shares (Direct)

Footnotes (1)

1. F1. 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.

Key Figures

RSUs granted: 2,040 units Price per share: $0.0000 Shares after transaction: 5,553 shares +1 more

4 metrics

RSUs granted 2,040 units Restricted stock units awarded to director on 2026-05-20

Price per share $0.0000 Grant price for the 2,040 RSUs

Shares after transaction 5,553 shares Total direct holdings reported following RSU grant

RSU-to-share ratio 1:1 Each RSU represents the right to receive one share

Key Terms

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

4 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.

contingent right financial

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

annual meeting of stockholders financial

"vest on the day immediately prior to the date of the next Knife River Corporation annual meeting of stockholders"

board of directors financial

"subject to the reporting person continuing in service on the board of directors"

The Board of Directors is a group of people chosen by a company's owners to help make big decisions and oversee how the company is run. They act like a team of advisors or managers, making sure the company stays on track and meets its goals. Their choices can influence the company's success and how it grows.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What did Knife River (KNF) director Patricia Chiodo report in this Form 4?

Patricia Chiodo reported receiving 2,040 restricted stock units (RSUs) of Knife River common stock as compensation. These RSUs were granted at no purchase price and increase her direct reported holdings to 5,553 shares following the transaction.

How many Knife River (KNF) shares does Patricia Chiodo hold after this grant?

After the RSU grant, Patricia Chiodo is reported as directly holding 5,553 shares of Knife River common stock. This total includes the newly granted 2,040 restricted stock units, each of which represents the right to receive one share upon vesting.

What are the vesting terms of Patricia Chiodo’s RSUs in Knife River (KNF)?

The RSUs vest on the day immediately prior to Knife River’s next annual meeting of stockholders after the grant date. Vesting is conditioned on Patricia Chiodo continuing to serve on the company’s board of directors through that vesting date.

Did Patricia Chiodo buy Knife River (KNF) shares on the open market in this filing?

No, this filing shows a grant of 2,040 restricted stock units as compensation, not an open-market purchase. The transaction price per share is reported as 0.0000, indicating an award rather than a cash purchase on the market.

What does each RSU granted to Patricia Chiodo in Knife River (KNF) represent?

Each restricted stock unit represents a contingent right to receive one share of Knife River common stock. The right becomes actual shares when the RSUs vest, subject to the continued board service condition described in the grant’s vesting terms.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 05/21/2026 - 05:11 PM EDT Learn about SEC filing dates

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^*

Chiodo Patricia

(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	5,553	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)