Knife River Corporation (KNF)
NYSE: KNF · Mining & Quarrying of Nonmetallic Minerals (No Fuels) · Bismarck, ND · filing with the SEC since 2022
Who owns Knife River Corporation
As filed with the SECHolders of 5% or more
4
T. Rowe Price Associates, Inc. holds 10.8% of COMMON STOCK, as its SCHEDULE 13G/A filed Oct 7, 2026 says.
Directors and officers
14
report now, of 19 people on the record since 2023. Their holdings as a group are not read here.
Institutions as a whole
n/a
The record does not read the share held by managers that file Form 13F, so none is printed and no split of the rest is estimated. What it holds is the 4 named at left.
Holders of 5% or moreshare of the class, as filed
T. Rowe Price Associates, Inc.
SCHEDULE 13G/A · filed Oct 7, 2026 · COMMON STOCK · 9% in Aug 14, 2026
Capital World Investors
SCHEDULE 13G · filed Aug 12, 2026 · Common Stock
Vanguard Capital Management
SCHEDULE 13G · filed Apr 30, 2026 · Common Stock
Vanguard Portfolio Management
SCHEDULE 13G · filed Jul 31, 2026 · Common Stock
The Vanguard Group
SCHEDULE 13G/A · filed Mar 27, 2026 · Common Stock · reported falling below 5%
What KNF reports owning in othersstakes of 5% or more, and other ties
Other ties the annual report names
Joint Venture, Proportionate Consolidation
An entity · consolidated entity · owns, named in the 10-K filed Feb 20, 2026
Strata Corporation
A company bought · acquisition · Feb 2025 · owns, named in the 10-K filed Feb 20, 2026
Washington Aggregate Quarry Operation
A company bought · acquisition · owns, named in the 10-K filed Feb 20, 2026
43 subsidiaries in 1 country, from the list filed with the 10-K filed Feb 20, 2026.
Insider tradesForm 4
0sales
0purchases
0sales on a scheduled plan
0people selling
$0sold, in dollars
$0bought, in dollars
Open-market trades on Form 4 from Oct 1, 2025 to Oct 1, 2026. A scheduled plan is a selling program set in advance under SEC rule 10b5-1. The trades are listed as filed and do not feed the grade.
By calendar yearSoldBought
No open-market trade is on the record for these years.
2024 runs to Oct 1, 2026. Dollars as filed, summed by the transaction date.
People who traded in the window
No one on the roster filed an open-market trade in the window.