Knife River Corp (KNF)

Data as of Oct 1, 2026, from SEC Form 4 filings.

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Latest KNF insider trades

Karen B. Fagg - Director
Grant or award$18K
Sep 30, 2026
Karen B. Fagg - Director
Grant or award$18K
Jun 30, 2026
William J. Sandbrook - Director

About Knife River Corp (KNF)

Knife River Corp is an SEC registrant, filing under CIK 0001955520, classified as mining and quarrying of nonmetallic minerals (no fuels). It is grouped with Materials companies on this site.

Sector: Materials

SEC filings for KNF on EDGAR

KNF Form 4 activity by transaction type, last 90 days

Form 4 transaction type	Transactions	Shares	Total value
Grant or award	1	329.85

Dollar totals cover purchases and sales only (codes P and S). Grants, option exercises, gifts and tax withholding are counted in shares, because none of them is a trade at a market price.

KNF insider transactions (Form 4)

24 Form 4 filings on record, the earliest from Oct 1, 2024, newest first.

Date	Insider	Transaction	Security	Shares	Price	Value
Sep 30, 2026	Karen B. Fagg - Director	Grant or award	Phantom Stock	329.85	$53.43	$18K
Jun 30, 2026	Karen B. Fagg - Director	Grant or award	Phantom Stock	197.48	$89.25	$18K
May 20, 2026	William J. Sandbrook - Director	Grant or award	Common Stock	2,040^{footnote F1}	$0.00	-
Footnote F1 (shares): 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… Full note on SEC EDGAR
May 20, 2026	Patricia L. Moss - Director	Grant or award	Common Stock	2,040^{footnote F1}	$0.00	-
Footnote F1 (shares): 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… Full note on SEC EDGAR
May 20, 2026	Thomas W. Hill - Director	Grant or award	Common Stock	2,040^{footnote F1}	$0.00	-
Footnote F1 (shares): 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… Full note on SEC EDGAR
May 20, 2026	Karen B. Fagg - Director	Grant or award	Common Stock	2,380^{footnote F1}	$0.00	-
Footnote F1 (shares): 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… Full note on SEC EDGAR
May 20, 2026	Patricia Chiodo - Director	Grant or award	Common Stock	2,040^{footnote F1}	$0.00	-
Footnote F1 (shares): 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… Full note on SEC EDGAR
May 20, 2026	German Carmona-Alvarez - Director	Grant or award	Common Stock	2,040^{footnote F1}	$0.00	-
Footnote F1 (shares): 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… Full note on SEC EDGAR
Mar 31, 2026	Karen B. Fagg - Director	Grant or award	Phantom Stock	221.68	$79.51	$18K
Mar 6, 2026	Brian R. Gray - Officer	Grant or award	Common Stock	20,955^{footnote F1}	$0.00	-
Footnote F1 (shares): Represents restricted stock units (RSUs) that vest on December 31, 2028, provided that the reporting person remains employed by the issuer as of the vesting date. Each RSU represents the contingent right to receive one share of the issuer's common stock.
Mar 4, 2026	Marney L. Kadrmas - Officer	Grant or award	Common Stock	1,199^{footnote F1}	$0.00	-
Footnote F1 (shares): Represents restricted stock units (RSUs) that vest on December 31, 2028, provided that the reporting person remains employed by the issuer as of the vesting date. Each RSU represents the contingent right to receive one share of the issuer's common stock.
Mar 4, 2026	Glenn R. Pladsen - Officer	Grant or award	Common Stock	2,950^{footnote F1}	$0.00	-
Footnote F1 (shares): Represents restricted stock units (RSUs) that vest on December 31, 2028, provided that the reporting person remains employed by the issuer as of the vesting date. Each RSU represents the contingent right to receive one share of the issuer's common stock.
Mar 4, 2026	Sarah L. Lachapelle - Officer	Grant or award	Common Stock	2,713^{footnote F1}	$0.00	-
Footnote F1 (shares): Represents restricted stock units (RSUs) that vest on December 31, 2028, provided that the reporting person remains employed by the issuer as of the vesting date. Each RSU represents the contingent right to receive one share of the issuer's common stock.
Mar 4, 2026	Karl A. Liepitz - Officer	Grant or award	Common Stock	4,611^{footnote F1}	$0.00	-
Footnote F1 (shares): Represents restricted stock units (RSUs) that vest on December 31, 2028, provided that the reporting person remains employed by the issuer as of the vesting date. Each RSU represents the contingent right to receive one share of the issuer's common stock.
Mar 4, 2026	Nathan W. Ring - Officer	Grant or award	Common Stock	5,211^{footnote F1}	$0.00	-
Footnote F1 (shares): Represents restricted stock units (RSUs) that vest on December 31, 2028, provided that the reporting person remains employed by the issuer as of the vesting date. Each RSU represents the contingent right to receive one share of the issuer's common stock.
Mar 4, 2026	Trevor J. Hastings - Officer	Grant or award	Common Stock	6,130^{footnote F1}	$0.00	-
Footnote F1 (shares): Represents restricted stock units (RSUs) that vest on December 31, 2028, provided that the reporting person remains employed by the issuer as of the vesting date. Each RSU represents the contingent right to receive one share of the issuer's common stock.
Feb 12, 2026	Glenn R. Pladsen - Officer	Tax withholding / forfeiture	Common Stock	1,385^{footnote F1}	$81.74	$113K
Feb 12, 2026	Glenn R. Pladsen - Officer	Tax withholding / forfeiture	Common Stock	1,569^{footnote F1}	$81.74	$128K
Footnote F1 (shares): Represents shares withheld by issuer to cover tax withholding obligations upon vesting of a restricted stock unit award.
Feb 12, 2026	Karl A. Liepitz - Officer	Tax withholding / forfeiture	Common Stock	8,648^{footnote F1}	$81.74	$707K
Footnote F1 (shares): Represents shares withheld by issuer to cover tax withholding obligations upon vesting of a restricted stock unit award.
Feb 12, 2026	Brian R. Gray - Officer	Tax withholding / forfeiture	Common Stock	10,072^{footnote F1}	$81.74	$823K
Feb 12, 2026	Brian R. Gray - Officer	Tax withholding / forfeiture	Common Stock	19,572^{footnote F1}	$81.74	$1.60M
Footnote F1 (shares): Represents shares withheld by issuer to cover tax withholding obligations upon vesting of a restricted stock unit award.
Feb 12, 2026	Trevor J. Hastings - Officer	Tax withholding / forfeiture	Common Stock	2,880^{footnote F1}	$81.74	$235K
Feb 12, 2026	Trevor J. Hastings - Officer	Tax withholding / forfeiture	Common Stock	4,599^{footnote F1}	$81.74	$376K
Footnote F1 (shares): Represents shares withheld by issuer to cover tax withholding obligations upon vesting of a restricted stock unit award.
Feb 12, 2026	Nathan W. Ring - Officer	Tax withholding / forfeiture	Common Stock	1,922^{footnote F1}	$81.74	$157K
Feb 12, 2026	Nathan W. Ring - Officer	Tax withholding / forfeiture	Common Stock	4,336^{footnote F1}	$81.74	$354K
Footnote F1 (shares): Represents shares withheld by issuer to cover tax withholding obligations upon vesting of a restricted stock unit award.
Feb 12, 2026	Marney L. Kadrmas - Officer	Tax withholding / forfeiture	Common Stock	1,232^{footnote F1}	$81.74	$101K
Footnote F1 (shares): Represents shares withheld by issuer to cover tax withholding obligations upon vesting of a restricted stock unit award.
May 22, 2025	Patricia L. Moss - Director	Grant or award	Common Stock	1,551	$0.00	-
Sep 30, 2024	Karen B. Fagg - Director	Grant or award	Phantom Stock	197.56	$89.22	$18K

Recent KNF Form 8-K filings

Read KNF company news

Sep 23, 2026Item 7.01, 9.01

Read the filing on SEC EDGAR

Aug 4, 2026Item 2.02, 7.01, 9.01

Read the filing on SEC EDGAR

May 21, 2026Item 5.02, 5.07, 9.01

Read the filing on SEC EDGAR

May 18, 2026Item 1.01, 2.03, 9.01

KNF insider trading FAQ

What is the latest insider trade for KNF?

Knife River Corp (KNF) had 1 insider filing in the last 90 days, with the most recent on 2026-10-01. The full record for KNF runs to 24 Form 4 filings, the earliest from 2024-10-01. InsiderAlpha adds new Form 4, Form 144 and 8-K filings as they arrive from SEC EDGAR.

How many insiders are buying KNF stock?

No insider purchases of KNF were filed in the last 90 days.

How many insiders are selling KNF stock?

No insider sales of KNF were filed in the last 90 days.

Where can I see KNF SEC filings (Form 4, 10-K, 10-Q, 8-K)?

This page collects KNF Form 4 insider transactions, Form 144 sale notices and 8-K filings in one place. Annual 10-K and quarterly 10-Q reports live on the company's SEC EDGAR page.

More Materials companies with insider activity

Recent insider filings

The EDGAR links open each original Form 4, so you can check any number on this page against the filing it came from.

Oct 1, 2026 - Karen B. Fagg view on EDGAR
Jul 1, 2026 - Karen B. Fagg view on EDGAR
May 21, 2026 - William J. Sandbrook view on EDGAR
May 21, 2026 - Patricia L. Moss view on EDGAR
May 21, 2026 - Thomas W. Hill view on EDGAR
May 21, 2026 - Karen B. Fagg view on EDGAR
May 21, 2026 - Patricia Chiodo view on EDGAR
May 21, 2026 - German Carmona-Alvarez view on EDGAR
Apr 1, 2026 - Karen B. Fagg view on EDGAR

Related companies with recent insider activity

Learn more

What the Form 4 transaction codes mean: Grants, option exercises, gifts and tax withholding are not trades on the market. The codes say which is which.
Insider activity in Materials: Where KNF's peers are being bought and sold.
Every recent Form 4: The market-wide feed, updated as filings arrive from SEC EDGAR.

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Form 4 transaction type

Transactions

Total value

Grant or award

329.85

Date

Insider

Transaction

Security

Price

Value

Sep 30, 2026

Karen B. Fagg - Director

Grant or award

Phantom Stock

329.85

$53.43

$18K

Jun 30, 2026

Karen B. Fagg - Director

Grant or award

Phantom Stock

197.48

$89.25

$18K

May 20, 2026

William J. Sandbrook - Director

Grant or award

Common Stock

2,040^{footnote F1}

$0.00

Footnote F1 (shares): 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… Full note on SEC EDGAR

May 20, 2026

Patricia L. Moss - Director

Grant or award

Common Stock

2,040^{footnote F1}

$0.00

Footnote F1 (shares): 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… Full note on SEC EDGAR

May 20, 2026

Thomas W. Hill - Director

Grant or award

Common Stock

2,040^{footnote F1}

$0.00

Footnote F1 (shares): 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… Full note on SEC EDGAR

May 20, 2026

Karen B. Fagg - Director

Grant or award

Common Stock

2,380^{footnote F1}

$0.00

Footnote F1 (shares): 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… Full note on SEC EDGAR

May 20, 2026

Patricia Chiodo - Director

Grant or award

Common Stock

2,040^{footnote F1}

$0.00

Footnote F1 (shares): 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… Full note on SEC EDGAR

May 20, 2026

German Carmona-Alvarez - Director

Grant or award

Common Stock

2,040^{footnote F1}

$0.00

Footnote F1 (shares): 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… Full note on SEC EDGAR

Mar 31, 2026

Karen B. Fagg - Director

Grant or award

Phantom Stock

221.68

$79.51

$18K

Mar 6, 2026

Brian R. Gray - Officer

Grant or award

Common Stock

20,955^{footnote F1}

$0.00

Footnote F1 (shares): Represents restricted stock units (RSUs) that vest on December 31, 2028, provided that the reporting person remains employed by the issuer as of the vesting date. Each RSU represents the contingent right to receive one share of the issuer's common stock.

Mar 4, 2026

Marney L. Kadrmas - Officer

Grant or award

Common Stock

1,199^{footnote F1}

$0.00

Footnote F1 (shares): Represents restricted stock units (RSUs) that vest on December 31, 2028, provided that the reporting person remains employed by the issuer as of the vesting date. Each RSU represents the contingent right to receive one share of the issuer's common stock.

Mar 4, 2026

Glenn R. Pladsen - Officer

Grant or award

Common Stock

2,950^{footnote F1}

$0.00

Footnote F1 (shares): Represents restricted stock units (RSUs) that vest on December 31, 2028, provided that the reporting person remains employed by the issuer as of the vesting date. Each RSU represents the contingent right to receive one share of the issuer's common stock.

Mar 4, 2026

Sarah L. Lachapelle - Officer

Grant or award

Common Stock

2,713^{footnote F1}

$0.00

Footnote F1 (shares): Represents restricted stock units (RSUs) that vest on December 31, 2028, provided that the reporting person remains employed by the issuer as of the vesting date. Each RSU represents the contingent right to receive one share of the issuer's common stock.

Mar 4, 2026

Karl A. Liepitz - Officer

Grant or award

Common Stock

4,611^{footnote F1}

$0.00

Footnote F1 (shares): Represents restricted stock units (RSUs) that vest on December 31, 2028, provided that the reporting person remains employed by the issuer as of the vesting date. Each RSU represents the contingent right to receive one share of the issuer's common stock.

Mar 4, 2026

Nathan W. Ring - Officer

Grant or award

Common Stock

5,211^{footnote F1}

$0.00

Footnote F1 (shares): Represents restricted stock units (RSUs) that vest on December 31, 2028, provided that the reporting person remains employed by the issuer as of the vesting date. Each RSU represents the contingent right to receive one share of the issuer's common stock.

Mar 4, 2026

Trevor J. Hastings - Officer

Grant or award

Common Stock

6,130^{footnote F1}

$0.00

Footnote F1 (shares): Represents restricted stock units (RSUs) that vest on December 31, 2028, provided that the reporting person remains employed by the issuer as of the vesting date. Each RSU represents the contingent right to receive one share of the issuer's common stock.

Feb 12, 2026

Glenn R. Pladsen - Officer

Tax withholding / forfeiture

Common Stock

1,385^{footnote F1}

$81.74

$113K

Feb 12, 2026

Glenn R. Pladsen - Officer

Tax withholding / forfeiture

Common Stock

1,569^{footnote F1}

$81.74

$128K

Footnote F1 (shares): Represents shares withheld by issuer to cover tax withholding obligations upon vesting of a restricted stock unit award.

Feb 12, 2026

Karl A. Liepitz - Officer

Tax withholding / forfeiture

Common Stock

8,648^{footnote F1}

$81.74

$707K

Footnote F1 (shares): Represents shares withheld by issuer to cover tax withholding obligations upon vesting of a restricted stock unit award.

Feb 12, 2026

Brian R. Gray - Officer

Tax withholding / forfeiture

Common Stock

10,072^{footnote F1}

$81.74

$823K

Feb 12, 2026

Brian R. Gray - Officer

Tax withholding / forfeiture

Common Stock

19,572^{footnote F1}

$81.74

$1.60M

Footnote F1 (shares): Represents shares withheld by issuer to cover tax withholding obligations upon vesting of a restricted stock unit award.

Feb 12, 2026

Trevor J. Hastings - Officer

Tax withholding / forfeiture

Common Stock

2,880^{footnote F1}

$81.74

$235K

Feb 12, 2026

Trevor J. Hastings - Officer

Tax withholding / forfeiture

Common Stock

4,599^{footnote F1}

$81.74

$376K

Footnote F1 (shares): Represents shares withheld by issuer to cover tax withholding obligations upon vesting of a restricted stock unit award.

Feb 12, 2026

Nathan W. Ring - Officer

Tax withholding / forfeiture

Common Stock

1,922^{footnote F1}

$81.74

$157K

Feb 12, 2026

Nathan W. Ring - Officer

Tax withholding / forfeiture

Common Stock

4,336^{footnote F1}

$81.74

$354K

Footnote F1 (shares): Represents shares withheld by issuer to cover tax withholding obligations upon vesting of a restricted stock unit award.

Feb 12, 2026

Marney L. Kadrmas - Officer

Tax withholding / forfeiture

Common Stock

1,232^{footnote F1}

$81.74

$101K

Footnote F1 (shares): Represents shares withheld by issuer to cover tax withholding obligations upon vesting of a restricted stock unit award.

May 22, 2025

Patricia L. Moss - Director

Grant or award

Common Stock

1,551

$0.00

Sep 30, 2024

Karen B. Fagg - Director

Grant or award

Phantom Stock

197.56

$89.22

$18K