6-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 6-K

REPORT OF FOREIGN PRIVATE ISSUER

PURSUANT TO RULE 13a-16 OR 15d-16

UNDER THE SECURITIES EXCHANGE ACT OF 1934

For the month of January, 2026

Commission File Number: 001-35783

Alamos Gold Inc.

(Translation of registrant’s name into English)

Brookfield Place, 181 Bay Street, Suite 3910

Toronto, Ontario, Canada

M5J 2T3

(Address of principal executive office)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.

Form 20-F  o           Form 40-F  x

EXHIBIT INDEX

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

Document

FOR IMMEDIATE RELEASE

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

Alamos Gold Provides Notice of Fourth Quarter and Year-End 2025 Results

and Conference Call

Toronto, Ontario (January 16, 2026) – Alamos Gold Inc. (TSX:AGI; NYSE:AGI) (“Alamos” or the “Company”) plans to release its fourth quarter and year-end 2025 financial results after market close on Wednesday, February 18, 2026. Senior management will host a conference call on Thursday, February 19, 2026 at 10:00 am ET to discuss the results.

Participants may join the conference call via webcast or through the following dial-in numbers:

Via Webcast:

To view the live webcast, please register at www.alamosgold.com, or through the following link view webcast.

Via Phone:

Alternatively, you may register your phone number here within 30 minutes of the scheduled start of the call to receive an instant automated call back.

A playback will be available until March 21, 2026 by dialling (647) 362-9199 or (800) 770-2030 within Canada and the United States. The passcode is 1813237#. The webcast will be archived at www.alamosgold.com.

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 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”.

TRADING SYMBOL: TSX:AGI NYSE:AGI

FOR FURTHER INFORMATION, PLEASE CONTACT:

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

2 | ALAMOS GOLD INC