# EDGAR Filing Document

**Accession Number:** 0001322422
**File Stem:** 0001062993-26-003425
**Filing Date:** 2026-6
**Character Count:** 7315
**Document Hash:** c489dac7fa315258a212620a50139b01
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001062993-26-003425.hdr.sgml**: 20260630

**ACCESSION NUMBER**: 0001062993-26-003425

**CONFORMED SUBMISSION TYPE**: 6-K

**PUBLIC DOCUMENT COUNT**: 2

**CONFORMED PERIOD OF REPORT**: 20260630

**FILED AS OF DATE**: 20260630

**DATE AS OF CHANGE**: 20260630

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Hudbay Minerals Inc.
- **CENTRAL INDEX KEY:** 0001322422
- **STANDARD INDUSTRIAL CLASSIFICATION:** METAL MINING [1000]
- **ORGANIZATION NAME:** 01 Energy & Transportation
- **EIN:** 980485558
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 6-K
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-34244
- **FILM NUMBER:** 261138831

**BUSINESS ADDRESS:**
- **ADDRESS IS A NON US LOCATION:** YES
- **STREET 1:** 25 YORK STREET, SUITE 800
- **CITY:** TORONTO
- **PROVINCE COUNTRY:** A6
- **ZIP:** M5J 2V5
- **BUSINESS PHONE:** 416-362-8181

**MAIL ADDRESS:**
- **ADDRESS IS A NON US LOCATION:** YES
- **STREET 1:** 25 YORK STREET, SUITE 800
- **CITY:** TORONTO
- **PROVINCE COUNTRY:** A6
- **ZIP:** M5J 2V5

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** HudBay Minerals Inc.
- **DATE OF NAME CHANGE:** 20050331

------

**UNITED STATES** <br>**SECURITIES AND EXCHANGE COMMISSION** <br>Washington, D.C. 20549

**FORM 6-K** 

**REPORT OF FOREIGN PRIVATE ISSUER** <br>**PURSUANT TO RULE 13A-16 OR 15D-16 OF** <br>**THE SECURITIES EXCHANGE ACT OF 1934** 

For the month of **<u>June 2026</u>**

Commission File Number: **<u>001-34244</u>**

**<u>HUDBAY MINERALS INC.</u>** <br>(Translation of registrant's name into English)

**25 York Street, Suite 800** <br>**Toronto, Ontario** <br>**<u>M5J 2V5, Canada</u>** <br>(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 [ ]&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Form 40-F [X]

Indicate by check mark whether the registrant by furnishing the information contained in this Form is also thereby furnishing the information to the Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934.

Yes [ ]&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; No [X]

If "Yes" is marked, indicate below the file number assigned to the registrant in connection with Rule 12g3-2(b): 82- _____________________________

------

**EXPLANATORY NOTE**

On June 30, 2026, Hudbay Minerals Inc. ("Hudbay") filed on the Canadian Securities Administrators' System for Electronic Document Analysis and Retrieval (SEDAR) website at www.sedarplus.ca the following documents: (1) Material Change Report.

Copies of the filings are attached to this Form 6-K and incorporated herein by reference, as follows:

* Exhibit 99.1 — Material Change Report

------

**SIGNATURE**

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.

---

| | |
|:---|:---|
| HUDBAY MINERALS INC. | HUDBAY MINERALS INC. |
| (registrant) | (registrant) |
| By: | /s/ Mark Haber |
| Name: | Mark Haber |
| Title: | Vice President, Legal and Corporate Secretary |

---

Date: June 30, 2026

------

**EXHIBIT INDEX**

The following exhibits are furnished as part of this Form 6-K:

---

| | |
|:---|:---|
| **Exhibit** | **Description** |
| [99.1](exhibit99-1.htm) | [Material Change Report](exhibit99-1.htm) |

---

------

## Exhibit 99.1

------

**FORM 51-102F3**<br>**MATERIAL CHANGE REPORT** 

**NATIONAL INSTRUMENT 51-102**

**ITEM 1 Name and Address of Company**

Hudbay Minerals Inc. ("**Hudbay**")

25 York Street, Suite 800

Toronto, Ontario M5J 2V5

**ITEM 2 Date of Material Change**

June 24, 2026

**ITEM 3 News Release**

On June 24, 2026, a news release relating to the material change referred to herein was issued through Globe Newswire and filed on SEDAR+ and EDGAR under Hudbay's profile at <u>www.sedarplus.ca</u> and <u>www.sec.gov</u>, respectively.

**ITEM 4 Summary of Material Change**

On June 24, 2026, Hudbay announced the closing of its previously announced acquisition of Arizona Sonoran Copper Company Inc. ("**Arizona Sonoran**") by way of a court-approved plan of arrangement (the "**Arrangement**"), pursuant to which Hudbay acquired all of the issued and outstanding common shares of Arizona Sonoran not already owned by Hudbay, effective as of June 24, 2026 (the "**Transaction**"). Arizona Sonoran is now a wholly-owned subsidiary of Hudbay and, in accordance with the terms of the Transaction, former Arizona Sonoran shareholders (other than Hudbay) received 0.242 of a Hudbay common share (each whole Hudbay common share, a "**Hudbay Share**") for each Arizona Sonoran common share (each, an "**ASCU Share**") held immediately prior to the effective time of the Transaction or, in the case of former holders of options, restricted share units and deferred share units of Arizona Sonoran, for each ASCU Share held immediately following the effective time of the Transaction.

**ITEM 5 Full Description of Material Change**

On June 24, 2026, Hudbay announced the closing of the Transaction. Arizona Sonoran is now a wholly-owned subsidiary of Hudbay and, in accordance with the terms of the Transaction, former Arizona Sonoran shareholders (other than Hudbay) received 0.242 of a Hudbay Share for each ASCU Share held immediately prior to the effective time of the Transaction or, in the case of former holders of options, restricted share units and deferred share units of Arizona Sonoran, for each ASCU Share held immediately following the effective time of the Transaction. In aggregate, Hudbay issued 46,794,082 Hudbay Shares as consideration under the Arrangement to former Arizona Sonoran shareholders and former holders of options, restricted share units and deferred share units of Arizona Sonoran.

Following the completion of the Arrangement, the common shares of Arizona Sonoran were delisted from the Toronto Stock Exchange and the OTCQX Best Market as of the close of markets on June 25, 2026. Arizona Sonoran has applied to cease to be a reporting issuer under Canadian securities laws in each of the provinces and territories of Canada in which it is a reporting issuer.

------

Hudbay is, and will continue to be, a reporting issuer in all provinces and territories of Canada and the Hudbay Shares are, and will remain, listed for trading on the New York Stock Exchange and the Toronto Stock Exchange under the ticker "HBM".

Full details of the Arrangement and certain other matters are set out in the management information circular of Arizona Sonoran dated April 7, 2026, a copy of which has been filed under Arizona Sonoran's issuer profile on SEDAR+ at <u>www.sedarplus.ca</u>.

**ITEM 5.2 Disclosure for Restructuring Transactions**

Not applicable.

**ITEM 6 Reliance on subsection 7.1(2) of National Instrument 51-102**

Not applicable.

**ITEM 7 Omitted Information**

None.

**ITEM 8 Executive Officer**

For further information, please contact:

Candace Brûle<br>Senior Vice President, Capital Markets and Corporate Affairs<br>(416) 362-8181<br><u>investor.relations@hudbayminerals.com</u>

**ITEM 9 Date of Report**

June 30, 2026.

------