All amounts are in United States dollars, unless otherwise stated.

Toronto, Ontario (May 30, 2025) – Alamos Gold Inc. (TSX:AGI; NYSE:AGI) (“Alamos” or the “Company”) today reported a summary of the voting results of its Annual General and Special Meeting of Shareholders (the “Meeting”) held on May 29, 2025. The Company is also announcing the retirement of David Gower from the Board of Directors, and the appointment of Alexander Christopher, Chana Martineau, and Richard McCreary.

“On behalf of the Board and management team, I would like to extend our gratitude to David for his service to Alamos over the past 16 years. Since joining the Board of Directors in 2009, David’s leadership and technical expertise have proven invaluable during a period of significant growth for Alamos. We wish him all the best in his future endeavours,” said John A. McCluskey, President and Chief Executive Officer. “I would also like to welcome Alexander Christopher, Chana Martineau, and Richard McCreary as new board members. Alex, Chana and Rick complement our Board with tremendous technical, operational, capital markets, and financial expertise.”

Alexander Christopher has over 40 years of experience in the mineral exploration and mining industry, spending the majority of his career with Teck Resources Limited (“Teck”) before retiring in 2024. Mr. Christopher held a number of management, commercial and technical positions in Teck’s Exploration, Corporate Development and Project Groups. Mr. Christopher is a former director of Horizonte Minerals Plc, the Association of Mineral Exploration BC, and the Prospectors and Developers Association of Canada, where he served as President from 2021 to 2023. He is a member of the Engineers and Geoscientists British Columbia and possesses an Honours B.Sc. in Geology from McMaster University and an Environmental Biology Technology diploma from Canadore College.

Chana Martineau is the Chief Executive Officer of the Alberta Indigenous Opportunities Corporation (“AIOC”), a globally leading crown corporation dedicated to supporting Indigenous economic investment in large scale infrastructure through loan guarantees and capacity grant funding. Prior to leading the AIOC, Ms. Martineau was a vice president with Canadian Western Bank and spent more than a decade with Ernst & Young LLP. Currently she is a director of Cenovus Energy Inc. She is a recognized leader and speaker on Indigenous reconciliation. Ms. Martineau holds a degree in Economics from the University of Alberta and holds the ICD.D designation from the Institute of Corporate Directors. Ms. Martineau is a proud member of Frog Lake First Nation.

Richard McCreary has over 40 years of experience in the resource sector, both as a principal in executive and board roles with various companies, as well as a financial advisor in investment banking. Mr. McCreary started his career with Gulf Canada as an exploration geophysicist, later working with the Noranda-Falconbridge Group in engineering, technology development, and metals marketing; and later, as Senior Vice President, Corporate Development with Barrick. His most recent investment banking role was Deputy Chair Investment Banking at TD Securities, and prior to that, Head of CIBC's Global Mining Investment Banking Group. During his career, Mr. McCreary has acted as principal or lead financial advisor in some of the largest marquee transactions in the mining sector. Currently he is a director of ATEX Resources Inc. He holds an MBA in Finance and Strategy from McGill University, and a Master of Science and Bachelor of Science (Hons) in Geological Engineering from Queen's University.

The Company is reporting the voting results of its Meeting held virtually on Thursday, May 29, 2025. The summary of the results are as follows:

1.Election of Directors

2.Re-Appointment and Compensation of Auditors

3.Long-Term Incentive Plan

4.Employee Share Purchase Plan

5.Amended and Restated Shareholder Rights Plan

6.Approval of Approach to Executive Compensation

7.Shareholder proposal

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 significant portfolio of development stage projects, including the Phase 3+ 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 TSX and NYSE under the symbol “AGI”.

May 30, 2025

To:     The Securities Commissions of all of the Provinces and Territories of Canada

In accordance with section 11.3 of National Instrument 51-102 - Continuous Disclosure Obligations, this report briefly describes the matters voted upon and the outcome of the votes at the annual general and special meeting of shareholders of Alamos Gold Inc. (the “Company”) held on May 29, 2025.

                

1.Election of Directors

2.Re-Appointment and Compensation of Auditors

3.Long-Term Incentive Plan

4.Employee Share Purchase Plan

5.Amended and Restated Shareholder Rights Plan

6.Approval of Approach to Executive Compensation

7.Shareholder proposal