AG First Majestic Silver Corporation

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

OF THE SECURITIES EXCHANGE ACT OF 1934

For the month of January 2025

Commission File Number: 001-34984

First Majestic Silver Corp.

(Translation of registrant’s name into English)

Suite 1800 — 925 West Georgia Street

Vancouver, B.C. V6C 3L2

Canada

(Address of principal executive offices)

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 ☐   Form 40-F ☒

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1) ☐

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7) ☐

DOCUMENTS FILED AS PART OF THIS FORM 6-K

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.

2

Exhibit 99.1

FIRST MAJESTIC SILVER CORP.

(the “Company”)

Report of Voting Results Pursuant to Section 11.3 of

National Instrument 51-102 Continuous Disclosure Obligations (“NI 51-102”)

Following the special meeting of the Company’s shareholders held on January 14, 2025 in Vancouver, British Columbia (the “Meeting”), and in accordance with section 11.3 of NI 51-102, we hereby advise you of the following voting results as tabulated.

Share Issuance Resolution

Based on proxies received and votes by ballot at the Meeting, the ordinary resolution to approve the issuance of up to 190,000,000 common shares of the Company pursuant to and in accordance with the terms of the Agreement and Plan of Merger dated as of September 5, 2024 (the ”Merger Agreement”) by and among the Company, Ocelot Transaction Corporation, a direct wholly-owned Subsidiary of First Majestic, and Gatos Silver, Inc. was approved and the voting results are as follows:

Dated at Vancouver, British Columbia, this 14^th day of January, 2025.