Mr. Rudi Fronk reports

SEABRIDGE GOLD'S KSM PROJECT PETITIONS PROCEEDINGS UPDATE: DETAILED SUBMISSIONS HAVE BEEN FILED; ONE PETITIONER HAS WITHDRAWN

Seabridge Gold Inc. provided an update today on the next phase of the proceedings relating to the petitions commenced in late 2024, challenging the British Columbia Environmental Assessment Office's (EAO) decision granting Seabridge Gold's KSM project substantially started designation (SSD). 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.

Seabridge's written submissions have been filed, which expand on the Responses Seabridge filed in May, 2025. The submissions set forth detail the company's arguments regarding the sufficiency of the consultation and the observance of procedural fairness by the EAO in its process for making the SSD and that the granting of the SSD was not unreasonable. Seabridge is also arguing that SkeenaWild Conservation Trust does not have standing and its petition should be dismissed. The B.C. government also filed its written submissions on these matters concurrently with the company's filing. The petitions, the responses from Seabridge and the B.C. government, the most recent written submissions by all parties and the company's related news releases can be found on-line. The parties have scheduled the period from Sept. 22 to Oct. 1, 2025, for the court hearing.

Seabridge chief executive officer Rudi Fronk stated: "We believe the arguments against the allegations in the petitions are compelling. I continue to have confidence in the strength of our position against the petitions and hope for a speedy decision by the court. While this legal process continues, the SSD remains in effect."

In addition, in recent weeks the Southeast Alaska Indigenous Transboundary Commission, one of the two petitioners who brought the second petition challenging the SSD, has withdrawn from the proceedings.

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.