Mr. Sandeep Singh reports

WESTERN COPPER FORMALLY EXTENDS INVESTOR RIGHTS AGREEMENT WITH MITSUBISHI MATERIALS

Western Copper and Gold Corp. investor Mitsubishi Materials Corp. has completed the precondition for the previously announced extension of the parties' investor rights agreement.

Mitsubishi Materials acquired two million common shares of the company through open-market purchases, taking its overall ownership to approximately 5 per cent. Consequently, the investor rights agreement between the two groups has now been extended to May 30, 2026, in accordance with the amended terms announced on April 15, 2025.

"We are extremely pleased to maintain and enhance our relationship with Mitsubishi Materials," said Sandeep Singh, president and chief executive officer. "They remain an incredibly supportive shareholder, and we value their expertise as we advance the Casino project."

About Western Copper and Gold Corp.

Western Copper and Gold is developing the Casino project, Canada's premier copper-gold mine in Yukon and one of the most economic greenfield copper-gold mining projects in the world.

The company is committed to working collaboratively with its first nation and local communities to progress the Casino project using internationally recognized responsible mining technologies and practices.

We seek Safe Harbor.