Mr. Rudi Fronk reports

SEABRIDGE FILES RESPONSES TO PETITIONS CHALLENGING KSM'S SUBSTANTIALLY STARTED DESIGNATION

Seabridge Gold Inc. has filed its responses in B.C. Supreme Court to petitions challenging the Environmental Assessment Office's (EAO) decision granting Seabridge Gold's KSM project substantially started (SS) designation. On July 29, 2024, the EAO determined that Seabridge's KSM project had been substantially started, ensuring that the project's environmental assessment certificate is no longer subject to expiry.

The company's submissions further strengthen and broaden the responses that had been filed by the British Columbia government in late April, 2025, detailing the extent of the company's engagement with the petitioners in support of Seabridge's SS application and the previously granted provincial, federal and Nisga'a environmental approvals. Seabridge's extensive engagement with the TSKLH and the funding support the company provided to the TSKLH (one of the petitioners) was initiated in 2007 and has continued to be available ever since, including during the period of review of the company's application for an SS determination. The TSKLH have been included in all reviews of Seabridge's regulatory applications and participated to the extent they decided warranted, with funding support, contrary to their assertions. Seabridge's responses also support B.C.'s position on why granting the SS designation was not unreasonable. The petitions, the responses from Seabridge and the B.C. government, and its related news releases can be found on-line. The parties have scheduled the period from Sept. 22 to Sept. 29, 2025, for the court hearing.

Seabridge chief executive officer Rudi Fronk stated: "Our team's engagement and work in support of advancing KSM has been exemplary, especially while striving to achieve the SS determination. I am confident that our responses, and those of the B.C. government, provide strong support that the EAO's decision to grant the SS designation was indeed procedurally fair and not unreasonable. Resolving this issue will facilitate the next steps in project development beyond this year's extensive work schedule. While this legal process continues, the SS designation remains in effect."

About Seabridge Gold Inc.

Seabridge holds a 100-per-cent interest in several North American gold projects. Seabridge's principal asset, the KSM project and its Iskut project, are located in northwest British Columbia, Canada's Golden Triangle, the Courageous Lake project is located in Canada's Northwest Territories, the Snowstorm project in the Getchell gold belt of Northern Nevada and the 3 Aces project in the Yukon Territory.