[15-12G] MAG SILVER CORP SEC Filing

Rhea-AI Filing Summary

MAG Silver Corp. completed a court-approved statutory plan of arrangement under the Business Corporations Act (British Columbia) by which Pan American Silver Corp. acquired all of MAG Silver's issued and outstanding shares effective September 4, 2025. As a result, MAG Silver filed this Form 15 to terminate its registration and the duty to file reports under the Securities Exchange Act of 1934. The filing replaces a prior Form 15 submitted on September 15, 2025 that was inadvertently labeled as a Form 15F-12G rather than a Form 15-12G. The filing lists the approximate number of record holders of MAG Silver common shares as one.

Positive

• Pan American completed acquisition of all issued and outstanding MAG Silver shares effective September 4, 2025
• Termination of SEC reporting duties documented via filing of Form 15
• Replacement filing corrected a prior administrative labeling error of the earlier Form 15

Negative

• MAG Silver will no longer file periodic reports under Sections 13 and 15(d) following the termination
• Prior Form 15 was mislabeled (filed September 15, 2025) and required replacement

Insights

Financial Analyst

TL;DR: MAG Silver was acquired by Pan American; SEC reporting obligations have been terminated, consolidating ownership.

The filing confirms a completed statutory arrangement under British Columbia law in which Pan American acquired all issued and outstanding MAG Silver shares effective September 4, 2025. That corporate change triggers termination of MAG Silver's duty to file periodic reports with the SEC, as documented by the replacement Form 15. The filing also corrects a prior administrative labeling error with the earlier Form 15. For investors, the immediate implication is a cessation of MAG Silver's standalone SEC disclosures following acquisition.

Corporate Governance Expert

TL;DR: A completed plan of arrangement transferred full ownership to Pan American, and MAG Silver has formally ended its U.S. reporting obligations.

The document is a formal certification terminating MAG Silver's registration under Section 12(g) and suspending reporting duties under Sections 13 and 15(d) after a court-approved arrangement. The filing serves both to effect the regulatory change and to replace a previously misfiled Form 15. The mention of a single record holder indicates consolidated ownership following the transaction, consistent with the termination of public reporting responsibilities.

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 15

CERTIFICATION AND NOTICE OF TERMINATION OF REGISTRATION UNDER SECTION 12(g) OF THE SECURITIES EXCHANGE ACT OF 1934 OR SUSPENSION OF DUTY TO FILE REPORTS UNDER SECTIONS 13 AND 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

Commission File Number:
001-33574

MAG SILVER CORP.

(Exact name of registrant as specified in its charter)

#801 – 815 Hastings St. W

Vancouver, British Columbia

Canada V6C 1B4

604-684-1175

(Address, including zip code, and telephone number, including area code, of registrant’s principal executive offices)

Common Shares of MAG Silver Corp., no par value
(Title of each class of securities covered by this Form)

None

(Titles of all other classes of securities for which a duty to file reports under section 13(a) or 15(d) remains)

Please place an X in the box(es) to designate the appropriate rule provision(s) relied upon to terminate or suspend the duty to file reports:

Rule 12g-4(a)(1)						☒
Rule 12g-4(a)(2)						☐
Rule 12h-3(b)(1)(i)						☒
Rule 12h-3(b)(1)(ii)						☐
Rule 15d-6						☐
Rule 15d-22(b)						☐

Approximate number of holders of record as of the certification or notice date:

Common Shares of MAG Silver Corp.: One (1) *

* Effective September 4, 2025, the Registrant and Pan American Silver Corp. (“Pan American”) completed a court-approved statutory plan of arrangement under the Business Corporations Act (British Columbia) pursuant to which Pan American acquired all of the issued and outstanding shares of the Registrant.

Pursuant to the requirements of the Securities Exchange Act of 1934, MAG Silver Corp. has caused this certification/notice to be signed on its behalf by the undersigned duly authorized person.

MAG Silver Corp.

Date: September 17, 2025

By:

/s/ “Delaney Fisher”

Name: Delaney Fisher

Title: SVP, Legal and Secretary

This Form 15 is being filed to replace in its entirety the Form 15 filed by the Registrant on September 15, 2025 which was inadvertently labelled as a Form 15F-12G rather than a Form 15-12G.

FAQ

What happened to MAG Silver (MAG)?

The company was acquired by Pan American Silver Corp. and all issued and outstanding shares were transferred effective September 4, 2025.

Why did MAG Silver file Form 15?

MAG Silver filed Form 15 to terminate its registration under Section 12(g) and suspend its duty to file reports under Sections 13 and 15(d) after the acquisition.

Does MAG Silver still file SEC reports after the acquisition?

No. The filing documents the termination of the duty to file periodic reports following the transfer of all issued and outstanding shares.

Was there an error in prior filings?

Yes. This Form 15 replaces a Form 15 filed on September 15, 2025 that was inadvertently labeled as a Form 15F-12G instead of Form 15-12G.

How many record holders of MAG Silver common shares are listed?

The filing lists the approximate number of record holders of MAG Silver common shares as one (1).