Knife River Corp
KNF- Exchange
- NYSE
- Industry
- Mining & Quarrying of Nonmetallic Minerals (No Fuels)
- SEC CIK
- 0001955520
No open-market purchases or sales by Knife River Corp insiders were filed in the last 90 days; 392 institutions reported holding it in 13F filings for Q2 2026, worth $4.59B in total; no superinvestor holds it.
Holders of 5% or more of KNF
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Knife River Corp, largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| Price T Rowe Associates Inc | 13G/A | 6.70%3.79M shares | +1.40 ppfrom 5.30% | Aug 14, 20252 filings | Nov 14, 2025 | SEC |
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
3 Schedule 13D and 13G filings on Knife River Corp, newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Mar 27, 202610:20 AM ET | Vanguard Group Inc | 13G/A | 0.00%0 shares | –Below 5% | Mar 13, 2026 | SEC |
| Nov 14, 202512:19 PM ET | Price T Rowe Associates Inc | 13G/A | 6.70%3.79M shares | +1.40 ppfrom 5.30% | Sep 30, 2025 | SEC |
| Aug 14, 20251:07 PM ET | Price T Rowe Associates Inc | 13G | 5.30%2.98M shares | New | Jun 30, 2025 | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell Knife River Corp shares.
No Form 144 notices for Knife River Corp are on file.