• Knife River issued a statement responding to a letter from activist investor Starboard Value.
• Engagement planned following disclosure it first learned of Starboard’s investment on Sept. 22, 2026.
• Board reiterated focus on margin expansion, disciplined capital allocation, operational execution, profitable growth.
• Strategy unchanged since 2023 spin, centered on EDGE initiatives to improve pricing, efficiency, operating performance.
• Vertically integrated model remains core to long-term value creation.

Disclaimer: This news brief was created by Public Technologies (PUBT) using generative artificial intelligence. While PUBT strives to provide accurate and timely information, this AI-generated content is for informational purposes only and should not be interpreted as financial, investment, or legal advice. Knife River Corporation published the original content used to generate this news brief via Business Wire (Ref. ID: 202609241300BIZWIRE_USPR_____20260924_BW977925) on September 24, 2026, and is solely responsible for the information contained therein.