Mr. Scott Parsons reports

ALAMOS GOLD PROVIDES NOTICE OF THIRD QUARTER 2025 RESULTS AND CONFERENCE CALL

Alamos Gold Inc. plans to release its third quarter 2025 financial results after market close on Wednesday, Oct. 29, 2025. Senior management will host a conference call on Thursday, Oct. 30, 2025, at 10 a.m. ET, to discuss the results.

Participants may join the conference call by webcast or through the following dial-in numbers.

Toronto and international:  416-406-0743

Toll-free (Canada and the United States):  800-898-3989

Participant passcode:  4265146 followed by the number sign

Webcast:  at the Alamos website

A playback will be available until Nov. 30, 2025, by dialling 905-694-9451 or 800-408-3053 within Canada and the United States. The passcode is 3824375 followed by the number sign. The webcast will be archived at Alamos website.

About Alamos Gold Inc.

Alamos is a Canadian-based intermediate gold producer with diversified production from three operations in North America. This includes the Island Gold district and the Young-Davidson mine in Northern Ontario, Canada, and the Mulatos district in Sonora state, Mexico. Additionally, the company has a strong portfolio of growth projects, including the phase 3-plus expansion at Island Gold, and the Lynn Lake project in Manitoba, Canada. Alamos employs more than 2,400 people and is committed to the highest standards of sustainable development. The company's shares are traded on the Toronto Stock Exchange and the New York Stock Exchange under the symbol AGI.