First Majestic updates mine technical reports

First Majestic Silver Corp. submitted a report as a foreign private issuer that mainly serves to furnish updated technical information on two of its Mexican mining operations.

Accepted by SEC EDGAR 09/26/2025 - 04:59 PM EDT Learn about SEC filing dates

Rhea-AI Filing Summary

First Majestic Silver Corp. submitted a report as a foreign private issuer that mainly serves to furnish updated technical information on two of its Mexican mining operations. The company filed NI 43-101 Technical Reports for the San Dimas silver/gold mine in Durango and Sinaloa, and the La Encantada silver mine in Coahuila, each with an effective date of August 31, 2025.

FAQ

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What did First Majestic Silver Corp. (AG) disclose in this September 2025 Form 6-K?

First Majestic Silver Corp. furnished a Form 6-K to provide two updated NI 43-101 Technical Reports for its San Dimas and La Encantada Mexican mines, each with an effective date of August 31, 2025, focusing on mineral resource and reserve estimates.

Which mines are covered by First Majestic Silver Corp. (AG) in the new technical reports?

The filing lists NI 43-101 Technical Reports for the San Dimas silver/gold mine in Durango and Sinaloa, Mexico, and the La Encantada silver mine in Coahuila, Mexico, both addressing mineral resource and mineral reserve estimates effective August 31, 2025.

What is the purpose of the NI 43-101 reports mentioned by First Majestic Silver Corp. (AG)?

The NI 43-101 reports provide formal technical disclosure on mineral resource and mineral reserve estimates for the San Dimas and La Encantada mines. They offer standardized geological and reserve information required for mining issuers with projects in jurisdictions like Mexico.

What are the effective dates of the new First Majestic Silver Corp. (AG) technical reports?

Both NI 43-101 Technical Reports attached to the filing, covering the San Dimas silver/gold mine and the La Encantada silver mine in Mexico, have an effective date of August 31, 2025, indicating the point in time for the underlying resource and reserve estimates.

Who signed the First Majestic Silver Corp. (AG) Form 6-K?

The report was signed on behalf of First Majestic Silver Corp. by Samir Patel, who is identified as General Counsel & Corporate Secretary, confirming the company’s authorization of the furnished NI 43-101 technical reports for its Mexican mining operations.

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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: September 2025

Commission File Number: 001-34984

FIRST MAJESTIC SILVER CORP.

(Translation of registrant’s name into English)

Suite 1800 – 925 West Georgia Street

Vancouver, British Columbia V6C 3L2

(Address of principal executive offices)

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

Form 20-F ☐   Form 40-F ☒

DOCUMENTS FILED AS PART OF THIS FORM 6-K

Exhibit		Description
99.1		Technical Report entitled “San Dimas Silver/Gold Mine, Durango and Sinaloa States, Mexico, NI 43-101 Technical Report on Mineral Resource and Mineral Reserve Estimates” with an effective date of August 31, 2025.
99.2		Technical Report entitled “La Encantada Silver Mine, State of Coahuila, Mexico, NI 43-101 Technical Report on Mineral Resource and Mineral Reserve Estimates” with an effective date of August 31, 2025.

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.

FIRST MAJESTIC SILVER CORP.

(Registrant)

/s/ Samir Patel

Samir Patel

General Counsel & Corporate Secretary

September 26, 2025