Materials · Mining & Quarrying of Nonmetallic Minerals (No Fuels)

KNF Knife River Corp SEC Filings & Insider Trading Activity 2026

company
CIK 195552047 filings
Russell 2000

KNF at a glance

Knife River Corp (KNF, SEC CIK 1955520) filed its latest 10-K annual report on February 20, 2026, a 10-Q quarterly report on August 4, 2026, an 8-K current report on September 23, 2026 and Form 4 insider filings as recently as October 1, 2026. SignalX summarizes each filing with AI and tracks the company's insider trades and institutional holders.

  • For the fiscal year ended December 31, 2025 (FY2025), Knife River Corp (KNF) reported revenue of $3.1 billion (up 8.5% from FY2024) and net income of $157.1 million. Diluted EPS was $2.76.
  • As of June 30, 2026, 32 institutional investment managers tracked by SignalX reported holding Knife River Corp (KNF) shares worth $2.4 billion in 13F-HR filings.

Source: SEC EDGAR (XBRL financial data, 13F-HR and Form 4 filings).

Revenue · FY2025
$3.1B
+8.5% vs prior year
Insiders · 90 days
0 buys · 0 sells
No open-market trades
13F holders
32 funds
$2.4B · −2 vs prior quarter
Latest 8-K
Sep 23, 2026
Item 7.01

AI 10-K Annual Report Analysis

Latest 10-K, fiscal year ended Dec 31, 2025

Full analysis →

Business Overview

  • Vertically integrated aggregates-based construction materials and contracting services provider across 14 states with 208 aggregate sites
  • Completion of tax-free spin-off from MDU Resources on May 31, 2023, becoming independent public company (NYSE: KNF)
  • Acquisition of Strata Corporation on March 7, 2025, adding 30 years of aggregate reserves, 24 ready-mix plants, and 3 asphalt plants for $454 million
  • Expanded Central segment with Strata acquisition, including rail and trucking assets enhancing logistics capabilities

Risk Factors

  • Regulatory risk: IIJA federal highway funding, 46% of $1.2T authorization undisbursed in 14-state market as of Nov 2025
  • Macroeconomic risk: $745M-$810M North Dakota DOT 2026 bid lettings, up from $345M in 2025, affecting backlog and workload
  • Operational risk: Integration of five acquisitions in 2025 for $611.7M adding 29 ready-mix and 5 asphalt plants depends on synergy realization
  • Competitive risk: Higher-margin bidding initiatives target organic and acquisition growth in mid-size, high-growth markets against market peers
  • Financial risk: $611.7M acquisition spend in 2025 raises capital allocation focus amid margin improvement and cost control efforts

Management Discussion & Analysis

  • Revenue $3,146M in 2025 (excluding $631M internal sales); Aggregates $617.1M (16.3%), Ready-mix concrete $779.4M (20.6%), Contracting services $1,383.9M (36.6%)
  • Gross profit $577.3M, margin 18.4% overall; Aggregates margin 18.5%, Ready-mix concrete margin 17.1%, Contracting services margin 11.2%
  • Best performing segment: Contracting services with $1,383.9M revenue and 11.2% margin; worst: Contracting services margin lowest but highest revenue
  • Sold 32.5 million tons aggregates in 2025, 35% used internally supporting vertical integration
  • Industry risks: high fragmentation, transportation cost limits, seasonality, cyclicality tied to economy, reliance on public spending and regulatory approvals

AI summary of the KNF 10-K filed . Generated from the filing text; verify against the original.View on SEC EDGARHow to read a 10-K

AI 10-Q Quarterly Report Analysis

Latest 10-Q, quarter ended Jun 30, 2026

Management Discussion & Analysis

  • Quarterly revenue $938.6M, up $104.8M or 13% YoY
  • Consolidated EBITDA margin 14.9% vs 16.8% YoY
  • Best segment Central: revenue $325.6M, EBITDA $53.6M, 16.5% margin
  • Worst segment West: revenue $290.4M, down 9% YoY; EBITDA margin 17.0% vs 19.1%
  • Cash deployment included $400M additional Term Loan B borrowings and acquisitions; backlog $1.2B, with $984M expected within 12 months

Risk Factors

  • No risk-factors section provided; submitted text covers Items 2–6 and exhibits only
  • Mine-safety compliance disclosures incorporated by reference through Exhibit 95
  • No director or officer Rule 10b5-1 trading arrangements adopted or terminated during quarter
  • April 20, 2026 supplemental indenture and May 15, 2026 credit-agreement amendment filed as financing documents

AI summary of the KNF 10-Q filed . Generated from the filing text; verify against the original.View on SEC EDGAR10-K vs 10-Q vs 8-K

AI 8-K Current Report Analysis

The most recent material events, by 8-K item

Filed Sep 23, 2026Full analysis →

Item 7.01: Regulation FD Disclosure

  • Investor presentation posted September 23, 2026 for use in stakeholder and investment-community meetings
  • Exhibit 99.1 contains the substantive presentation materials
Filed Aug 4, 2026Full analysis →

Item 7.01: Regulation FD Disclosure

  • Second-quarter 2026 earnings released August 4, 2026
  • Exhibit 99 contains the substantive financial results and management commentary

Item EX-99.1: Item EX-99.1

  • Q2 revenue rose 13% to $938.6M, but net income fell 13% to $43.9M and adjusted EBITDA declined 1% to $139.7M
  • Contracting services revenue increased 20%, while gross profit growth across product lines was offset by energy costs and lower-margin project mix
Filed May 18, 2026Full analysis →

Item 1.01: Entry into a Material Definitive Agreement

  • $400 million term B loan increase, bringing total outstanding term B loans to $895 million
  • Interest margin reduced 0.25%, with rates of 1.75% for SOFR loans or 0.75% for base-rate loans

AI summaries of KNF 8-K current reports filed with the SEC. What 8-K item codes mean

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Recent Insider Transactions (Form 4)

Latest reported trades by officers, directors and 10% owners

InsiderTypeDatePrice
Fagg Karen BASep 30, 2026$53.43
Fagg Karen BAJun 30, 2026$89.25
Chiodo PatriciaAMay 20, 2026-
Fagg Karen BAMay 20, 2026-
SANDBROOK WILLIAM JAMay 20, 2026-
MOSS PATRICIA LAMay 20, 2026-
Carmona-Alvarez GermanAMay 20, 2026-
Hill Thomas W.AMay 20, 2026-

Financial Summary
XBRL

Annual financial summary from SEC XBRL data
MetricFY2023FY2024FY2025
Profitability
Revenue-$2.9B$3.1B
Gross Profit$538.9M$569.8M$577.3M
Operating Income-$316.2M$285.9M
Net Income$182.9M$201.7M$157.1M
Gross Margin-19.7%18.4%
Op. Margin-10.9%9.1%
Net Margin-7.0%5.0%
Balance Sheet
Total Assets-$2.9B$3.7B
Equity$1.3B$1.5B$1.6B
ROE14.4%13.7%9.6%
Per Share
EPS$3.23$3.55$2.76
Cash Flow
Operating CF-$322.3M$278.5M

Source: XBRL data in Knife River Corp (KNF)'s 10-K filings on SEC EDGAR, in USD. Compare across companies →

13F Fund Holdings: Quarterly Trend

Latest: Q2 2026

Aggregate KNF share value held by 13F filers tracked by SignalX, by quarter.

Quarterly totals table
KNF shares held by 13F filers tracked by SignalX, by quarter
QuarterFundsTotal value
Q2 202632$2.37B
Q1 202634$2.20B
Q4 202532$1.91B
Q3 202531$2.20B
Q2 202531$2.24B
Q1 202529$1.53B
Q4 202426$1.46B
Q3 202423$682.6M
Position changes: Q1 2026 → Q2 2026
Top Buyers
Top Sellers
New Positions

Source: 13F-HR filings on SEC EDGAR (aggregated from 238 fund-quarter rows). Reflects only 13F filers tracked by SignalX, not the full institutional ownership universe. How 13F filings work

KNF filing archive

AI analysis pages for each 10-K, 10-Q and 8-K

Latest 2026 SEC Filings: 10-K, 10-Q, 8-K & Form 4

FormFiling dateAnalysisSEC
4Oct 1, 2026--
8-KSep 23, 2026Analysis-
SC 13GAug 12, 2026-
8-KAug 4, 2026Analysis-
10-QAug 4, 2026Analysis
SC 13GJul 31, 2026-
4Jul 1, 2026--
4May 21, 2026-
4May 21, 2026-
4May 21, 2026-
4May 21, 2026-
4May 21, 2026-
4May 21, 2026-
8-KMay 18, 2026Analysis
8-KMay 5, 2026Analysis-
10-QMay 5, 2026Analysis
SC 13GApr 30, 2026-
4Apr 1, 2026--
4Mar 9, 2026--
4Mar 5, 2026--
4Mar 5, 2026--
4Mar 5, 2026--
4Mar 5, 2026--
4Mar 5, 2026--
4Mar 5, 2026--

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KNF SEC filings: frequently asked questions

Which institutions hold KNF stock?

As of June 30, 2026, the largest Knife River Corp (KNF) holders among the 13F filers tracked by SignalX were BlackRock ($609.8 million), T. Rowe Price Group ($428.0 million), Vanguard Portfolio Management LLC ($235.5 million), Vanguard Capital Management LLC ($214.3 million), State Street Corp ($180.3 million). 13F-HR reports are filed up to 45 days after each quarter ends.

What was KNF's revenue in fiscal year 2025?

For the fiscal year ended December 31, 2025 (FY2025), Knife River Corp (KNF) reported revenue of $3.1 billion (up 8.5% from FY2024) and net income of $157.1 million. Diluted EPS was $2.76. The figures come from the XBRL data in the 10-K.

What are the main risks in KNF's latest 10-K?

In the 10-K filed February 20, 2026, Knife River Corp (KNF) flagged: Regulatory risk: IIJA federal highway funding, 46% of $1.2T authorization undisbursed in 14-state market as of Nov 2025. Macroeconomic risk: $745M-$810M North Dakota DOT 2026 bid lettings, up from $345M in 2025, affecting backlog and workload. (AI summary of the Risk Factors section.)

What did KNF report in its latest 8-K?

Knife River Corp (KNF) filed an 8-K on September 23, 2026 reporting Item 7.01 (Regulation FD Disclosure). Investor presentation posted September 23, 2026 for use in stakeholder and investment-community meetings.

What are the latest KNF SEC filings?

Knife River Corp (KNF) filed its latest 10-K annual report on February 20, 2026, a 10-Q quarterly report on August 4, 2026, an 8-K current report on September 23, 2026 and a Form 4 insider filing on October 1, 2026.

What is KNF's SEC CIK number?

Knife River Corp (KNF)'s SEC Central Index Key (CIK) is 1955520. EDGAR lists every KNF filing under that number.

Ask anything about KNF

The research agent reads KNF's filings, financials, insider trades and 13F holders, then answers with sources.