Additional Proxy Soliciting Materials - Form DEFA14A

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): September 10, 2024

GATOS SILVER, INC.

(Exact name of registrant as specified in its charter)

Registrant's telephone number, including area code: (604) 424-0984

N/A

(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

Securities registered pursuant to Section 12(b) of the Act:

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company ☒

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☒

As previously announced, on September 5, 2024, Gatos Silver, Inc., a Delaware corporation ("Gatos"), and First Majestic Silver Corp., a British Columbia company ("First Majestic"), entered into an Agreement and Plan of Merger (the "Merger Agreement"), pursuant to which First Majestic will acquire all of the issued and outstanding common shares in Gatos (the "Transaction").

On September 10, 2024, Gatos provided supplemental information regarding the Transaction in a presentation to investors. A copy of the investor presentation is attached as Exhibit 99.1 hereto and incorporated by reference herein.

Important Information for Investors and Stockholders about the Transaction and Where to Find It

None of this current report on Form 8-K, nor the exhibits hereto, is intended to and constitutes an offer to sell or the solicitation of an offer to subscribe for or buy or an invitation to purchase or subscribe for any securities of First Majestic or Gatos or the solicitation of any vote or approval in any jurisdiction, nor shall there be any sale, issuance or transfer of securities of First Majestic or Gatos in any jurisdiction in contravention of applicable law. This current report on Form 8-K may be deemed to be soliciting material relating to the Transaction.

In connection with the Transaction between First Majestic and Gatos pursuant to the Merger Agreement and subject to future developments, First Majestic will file with the U.S. Securities and Exchange Commission (the "SEC") a registration statement on Form F-4 that is expected to include a Proxy Statement of Gatos that will also constitute a Prospectus of First Majestic (the "Proxy Statement/Prospectus") and other documents. First Majestic will also file a management proxy circular in connection with the transaction with applicable Canadian securities regulatory authorities. This current report on Form 8-K is not a substitute for any registration statement, proxy statement, prospectus or other document First Majestic or Gatos may file with the SEC or Canadian securities regulatory authorities in connection with the pending Transaction. Gatos plans to mail to its shareholders the definitive Proxy Statement/Prospectus in connection with the transaction and First Majestic will deliver its management proxy circular to First Majestic shareholders. INVESTORS AND SECURITY HOLDERS OF GATOS AND FIRST MAJESTIC ARE URGED TO READ THE PROXY STATEMENT/PROSPECTUS AND MANAGEMENT PROXY CIRCULAR, RESPECTIVELY, AND ANY OTHER RELEVANT DOCUMENTS FILED OR TO BE FILED WITH THE SEC OR CANADIAN SECURITIES REGULATORY AUTHORITIES CAREFULLY IN THEIR ENTIRETY IF AND WHEN THEY BECOME AVAILABLE BEFORE MAKING ANY VOTING OR INVESTMENT DECISION WITH RESPECT TO THE TRANSACTION BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION ABOUT FIRST MAJESTIC, GATOS, THE TRANSACTION AND RELATED MATTERS. Investors and security holders will be able to obtain free copies of the Proxy Statement/Prospectus (when available), the filings with the SEC that will be incorporated by reference into the Proxy Statement/Prospectus and other documents filed with the SEC by First Majestic and Gatos containing important information about First Majestic or Gatos and the Transaction through the website maintained by the SEC at www.sec.gov. Investors will also be able to obtain free copies of the management proxy circular and other documents filed with Canadian securities regulatory authorities by First Majestic, through the website maintained by the Canadian Securities Administrators at www.sedarplus.com. In addition, investors and security holders will be able to obtain free copies of the documents filed by First Majestic with the SEC and Canadian securities regulatory authorities on First Majestic's website at www.firstmajestic.com or by contacting First Majestic's investor relations team. Copies of the documents filed with the SEC by Gatos will be available free of charge on Gatos' website or by contacting Gatos' investor relations team.

Participants in the Merger Solicitation

First Majestic, Gatos and certain of their respective directors, executive officers and employees may be considered participants in the solicitation of proxies in connection with the proposed Transaction. Information regarding the persons who may, under the rules of the SEC, be deemed participants in the solicitation of the shareholders of First Majestic and the stockholders of Gatos in connection with the Transaction, including a description of their respective direct or indirect interests, by security holdings or otherwise, will be included in the Proxy Statement/Prospectus described above and other relevant documents when it is filed with the SEC and Canadian securities regulatory authorities in connection with the Transaction. Additional information regarding First Majestic's directors and executive officers is also included in First Majestic's Notice of Annual Meeting of Shareholders and 2024 Proxy Statement, which was filed with the SEC and Canadian securities regulatory authorities on April 15, 2024, and information regarding Gatos' directors and executive officers is also included in Gatos' Annual Report on Form 10-K for the year ended December 31, 2023 filed with the SEC on February 20, 2024, as amended by Amendment No. 1 to such annual report filed with the SEC on May 6, 2024 and Gatos' 2024 Proxy Statement for its 2024 Annual Meeting of Stockholders, which was filed with the SEC on April 25, 2024. These documents are available free of charge as described above.

Cautionary Note Regarding Forward Looking Statements

This current report on Form 8-K and the exhibits hereto contain "forward‐looking statements" within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended, which are intended to be covered by the safe harbor created by such sections and other applicable laws and "forward‐looking information" under applicable Canadian securities laws (collectively, "forward‐looking statements"). These statements relate to future events or the future performance, business prospects or opportunities of First Majestic and/or Gatos that are based on forecasts of future results, estimates of amounts not yet determinable and assumptions of management of First Majestic and/or Gatos made in good faith in light of management's experience and perception of historical trends, current conditions and expected future developments. Forward‐looking statements in this current report on Form 8-K and the exhibits hereto include, but are not limited to, statements with respect to: closing of the Transaction and the terms and timing related thereto; the anticipated benefits of the Transaction to First Majestic, Gatos and their respective shareholders including increased shareholder value; the timing and receipt of required shareholder, stock exchange and regulatory approvals; satisfaction of the conditions to completion of the Transaction; the anticipated timing of mailing proxy statements and circulars regarding the Transaction; liquidity, enhanced value and capital markets profile of First Majestic; annual free cash flow and revenue estimates; future growth potential for First Majestic, Gatos and their respective businesses; life of mine estimates; estimates regarding the future price of silver and other metals, asset quality and geographic spread, the estimation of mineral reserves and resources, the realization of mineral reserve estimates, and the timing and amount of estimated future production, recovery rates, costs of production and all-in sustaining costs, capital expenditures, the costs and timing of the development of new deposits and exploration programs and expected listing of shares on the New York Stock Exchange and the Toronto Stock Exchange. Assumptions may prove to be incorrect and actual results may differ materially from those anticipated. Consequently, guidance cannot be guaranteed. As such, investors are cautioned not to place undue reliance upon guidance and forward‐looking statements as there can be no assurance that the plans, assumptions or expectations upon which they are placed will occur. All statements other than statements of historical fact may be forward‐looking statements. Statements concerning proven and probable mineral reserves and mineral resource estimates may also be deemed to constitute forward‐looking statements to the extent that they involve estimates of the mineralization that will be encountered as and if the property is developed, and in the case of measured and indicated mineral resources or proven and probable mineral reserves, such statements reflect the conclusion based on certain assumptions that the mineral deposit can be economically exploited. Any statements that express or involve discussions with respect to predictions, expectations, beliefs, plans, projections, objectives or future events or performance (often, but not always, using words or phrases such as "seek", "anticipate", "plan", "continue", "estimate", "expect", "may", "will", "project", "predict", "forecast", "potential", "target", "intend", "could", "might", "should", "believe" and similar expressions) are not statements of historical fact and may be "forward‐looking statements".

Actual results may vary from forward‐looking statements. Forward‐looking statements are subject to known and unknown risks, uncertainties and other factors that may cause actual results to materially differ from those expressed or implied by such forward‐looking statements, including but not limited to: satisfaction or waiver of all applicable closing conditions for the Transaction on a timely basis or at all including, without limitation, receipt of all necessary shareholder, stock exchange and regulatory approvals or consents and lack of material changes with respect to First Majestic and Gatos and their respective businesses, all as more particularly set forth in the Merger Agreement and the timing of the closing of the Transaction and the failure of the Transaction to close for any reason; the outcome of any legal proceedings that may be instituted against First Majestic or Gatos and others related to the Transaction; unanticipated difficulties or expenditures relating to the Transaction; risks relating to the value of the consideration to be issued in connection with the Transaction; the diversion of management time on pending Transaction-related issues; the synergies expected from the Transaction not being realized; business integration risks; fluctuations in security markets; the duration and effects of the COVID‐19, and any other pandemics on operations and workforce, and the effects on global economies and society; general economic conditions including inflation risks; actual results of exploration activities; conclusions of economic evaluations; changes in project parameters as plans continue to be refined; commodity prices; variations in ore reserves, grade or recovery rates; availability of sufficient water for operating purposes; actual performance of plant, equipment or processes relative to specifications and expectations; accidents; labor relations; relations with local communities; changes in national or local governments; changes in applicable legislation or application thereof; delays in obtaining approvals or financing or in the completion of development or construction activities; exchange rate fluctuations; requirements for additional capital; government regulation; environmental risks; reclamation expenses; outcomes of pending litigation; limitations on insurance coverage, changes in national and local government, legislation, taxation, controls, regulations and political or economic developments; operating or technical difficulties in connection with mining or development activities; risks and hazards associated with the business of mineral exploration, development and mining (including environmental hazards, industrial accidents, unusual or unexpected formations, pressures, cave-ins and flooding); risks relating to the credit worthiness or financial condition of suppliers, refiners and other parties with whom First Majestic or Gatos does business; inability to obtain adequate insurance to cover risks and hazards; and the presence of laws and regulations that may impose restrictions on mining, including those currently enacted in Mexico; employee relations; relationships with and claims by local communities and indigenous populations; availability and increasing costs associated with mining inputs and labor; the speculative nature of mineral exploration and development, including the risks of obtaining necessary licenses, permits and approvals from government authorities; diminishing quantities or grades of mineral reserves as properties are mined; First Majestic's and Gatos' title to properties, changes in climate conditions and extreme weather events, as well as those factors discussed in (a) the section entitled "Description of the Business ‐ Risk Factors" in First Majestic's most recently filed AIF, available under its profile on SEDAR+ at www.sedarplus.ca, and as an exhibit to its most recently filed Form 40‐F available on EDGAR at www.sec.gov/edgar or on First Majestic's website and (b) the Gatos' Annual Report on Form 10-K for the year ended December 31, 2023, available on EDGAR at www.sec.gov/edgar or on Gatos' website. First Majestic is not affirming or adopting any statements or reports attributed to Gatos (including prior mineral reserve and resource declaration) in this current report on Form 8-K or made by Gatos outside of this current report on Form 8-K and the exhibits hereto. Gatos is not affirming or adopting any statements or reports attributed to First Majestic (including prior mineral reserve and resource declaration) in this current report on Form 8-K or made by First Majestic outside of this current report on Form 8-K. In addition, the failure of a party to comply with the terms of the Merger Agreement may result in that party being required to pay a fee to the other party, the result of which could have a material adverse effect on the paying party's financial position and results of operations and its ability to fund growth prospects and current operations. Although First Majestic and Gatos have attempted to identify important factors that could cause actual results to differ materially from those contained in forward‐looking statements, there may be other factors that cause results not to be as anticipated, estimated or intended.

First Majestic and Gatos believe that the expectations reflected in these forward-looking statements are reasonable, but no assurance can be given that these expectations will prove to be correct and such forward-looking statements included herein should not be unduly relied upon. These statements speak only as of the date hereof. First Majestic and Gatos do not intend, and do not assume any obligation, to update these forward-looking statements or forward-looking information, except as required by applicable laws.

Item 9.01.

Financial Statements and Exhibits.

(d) Exhibits.