Alamos Gold Files Technical Report for the Island Gold District Expansion

Alamos Gold (TSX:AGI / NYSE:AGI) filed a National Instrument 43-101 technical report on March 20, 2026 for its Island Gold District Expansion Study in Ontario.

Rhea-AI Summary

Alamos Gold (TSX:AGI / NYSE:AGI) filed a National Instrument 43-101 technical report on March 20, 2026 for its Island Gold District Expansion Study in Ontario. The report supports disclosures made on February 3, 2026 and is available on the company website, SEDAR+ and EDGAR.

Argus Mar 20 session

-3.41% close to close Open Argus

Details

News Market Reaction – AGI

In the Mar 20 session, AGI declined 3.41%, reflecting a moderate negative market reaction.

Data tracked by StockTitan Argus on the day of publication.

Market Context

This announcement formalizes a technical report for the Island Gold District Expansion Study under N...

Analysis

This announcement formalizes a technical report for the Island Gold District Expansion Study under National Instrument 43-101, supporting detailed disclosure first outlined on February 3, 2026. It anchors earlier guidance that highlighted substantial reserve growth and long-term production expansion. Investors may track how this report interacts with prior expansion economics, record 2025 financials, and three-year growth plans, while monitoring future updates on project execution, costs, and realized operating performance at Island Gold and Magino.

Key Figures

Publication date: March 20, 2026 Reference date: February 3, 2026 National Instrument: 43-101

Publication date

March 20, 2026

Press release date for technical report filing

Reference date

February 3, 2026

Date of prior news release supported by this technical report

National Instrument

43-101

Standards for Disclosure for Mineral Projects governing the technical report

Historical Context

5 past events · Latest: Feb 04

5 events

1. Feb 04

   Growth guidance

   24h Move

   +5.7%

   Three-year operating guidance outlining 46% production growth and lower costs.

2. Feb 17

   Reserves update

   24h Move

   +1.0%

   Major Mineral Reserve increase led by Island Gold and higher exploration budget.

3. Feb 18

   Dividend increase

   24h Move

   +4.8%

   60% dividend hike supported by record free cash flow and growth outlook.

4. Feb 18

   Year-end results

   24h Move

   +4.8%

   Record 2025 revenues, free cash flow, and significant reserve growth.

5. Feb 19

   Statement refiling

   24h Move

   +4.8%

   Refiling financials to correct audit opinion with no change to results.

24h Move is the share-price change in the day after each event; other market factors may also have contributed.

Key Terms

national instrument 43-101, sedar+, edgar

3 terms

national instrument 43-101 regulatory

"prepared in accordance with National Instrument 43-101 – Standards for Disclosure"

National Instrument 43-101 is a set of rules and guidelines that govern how mineral exploration and mining companies must report information about their projects. It ensures that the details shared with investors are accurate, consistent, and reliable—similar to how a detailed, verified blueprint ensures a building’s safety. This helps investors make informed decisions based on trustworthy information about a company's mineral resources.

sedar+ regulatory

"will be available under the Company’s profile on SEDAR+ at www.sedarplus.ca"

SEDAR+ is Canada’s centralized online system where publicly traded companies submit required regulatory documents such as financial reports, prospectuses and disclosure statements. It gives investors a single, searchable place — like a public library or online filing cabinet — to check a company’s official records for transparency, compare performance, and verify material information before making investment decisions.

edgar regulatory

"and EDGAR at www.sec.gov."

EDGAR is a system used by companies to share important financial and business information with the public. It functions like an online filing cabinet where investors can access official reports and documents that help them understand a company's financial health and operations. This transparency allows investors to make more informed decisions, much like checking a company's report card before investing.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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TORONTO, March 20, 2026 (GLOBE NEWSWIRE) -- Alamos Gold Inc. (TSX:AGI; NYSE:AGI) (“Alamos” or the “Company”) today announced that it has filed a technical report for the Expansion Study completed on the Island Gold District operation, located in Ontario, Canada.

The report was prepared in accordance with National Instrument 43-101 – Standards for Disclosure for Mineral Projects and supports the disclosure outlined in Alamos’ news release dated February 3, 2026. The report is available on the Alamos website at www.alamosgold.com and will be available under the Company’s profile on SEDAR+ at www.sedarplus.ca and EDGAR at www.sec.gov.

About Alamos

Alamos is a Canadian-based intermediate gold producer with diversified production from three operations in North America. This includes the Island Gold District and 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 IGD Expansion, 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”.

FOR FURTHER INFORMATION, PLEASE CONTACT:

Scott K. Parsons

Senior Vice President, Corporate Development & Investor Relations

(416) 368-9932 x 5439

Khalid Elhaj

Vice President, Business Development & Investor Relations

(416) 368-9932 x 5427

ir@alamosgold.com

The TSX and NYSE have not reviewed and do not accept responsibility for the adequacy or accuracy of this release.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What did Alamos Gold (AGI) file on March 20, 2026 for the Island Gold District?

Alamos filed a NI 43-101 technical report for the Island Gold District Expansion Study. According to the company, the report documents the Expansion Study and supports the February 3, 2026 disclosure about the project and its technical findings.

Where can investors access the AGI Island Gold District technical report filed March 20, 2026?

The technical report is available on the company's investor website and regulatory sites. According to the company, the report can be downloaded from www.alamosgold.com and the Company profile on SEDAR+ and EDGAR.

What does a NI 43-101 technical report filing mean for AGI shareholders?

A NI 43-101 filing formalizes technical disclosure about a mineral project for investors. According to the company, it provides standardized technical details that underpin the Expansion Study disclosure from February 3, 2026.

Does the March 20, 2026 AGI filing change Island Gold project guidance or financials?

The filing itself is a technical report and does not announce new financial guidance. According to the company, it supports prior Expansion Study disclosures rather than introducing new financial forecasts or capital commitments.

How should investors use the March 20, 2026 AGI NI 43-101 report for due diligence?

Investors should review the technical report for geology, resources, and study assumptions before making decisions. According to the company, the report contains the technical basis and data underlying the Expansion Study disclosure.