William J. Sandbrook - 20 May 2026 Form 4 Insider Report for Knife River Corp (KNF)

Reporting relationship: Director
Issuer ticker: KNF
Reported as of: 20 May 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 21 May 2026, 17:14:02 UTC
Prior SEC filing: 19 May 2026
Source filing: View source filing
Reporting owner signature: /s/ Karl A. Liepitz, Power of Attorney

Key filing fact

William J. Sandbrook filed Form 4 for Knife River Corp (KNF) on 21 May 2026.

Key facts

This page summarizes William J. Sandbrook's Form 4 filing for Knife River Corp (KNF).
1 reported transaction and 0 derivative rows are listed below.
Accepted by SEC: 21 May 2026, 17:14.

Change

Previous filing in this sequence was filed on 19 May 2026.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001527678 Primary reporting owner

SANDBROOK WILLIAM J

Relationship: Director
Address: 1150 WEST CENTURY AVENUE, BISMARCK
Signature: /s/ Karl A. Liepitz, Power of Attorney
Signature date: 21 May 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

KNF transaction

Common Stock

Award

Transaction value
Shares: +2,040
Change %: +36%
Price: $0.000000^*
Shares after: 7,735
Date: 20 May 2026
Ownership: Direct
Footnotes: F1

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 1 footnote

Footnote 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.