# EDGAR Filing Document

**Accession Number:** 0001004156
**File Stem:** 0001575872-25-000668
**Filing Date:** 2025-11
**Character Count:** 5329
**Document Hash:** 42cc047902ee962a5d8f928e7cfe1a23
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001575872-25-000668.hdr.sgml**: 20251104

**ACCESSION NUMBER**: 0001575872-25-000668

**CONFORMED SUBMISSION TYPE**: 6-K

**PUBLIC DOCUMENT COUNT**: 4

**CONFORMED PERIOD OF REPORT**: 20251104

**FILED AS OF DATE**: 20251104

**DATE AS OF CHANGE**: 20251104

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** ARAUCO & CONSTITUTION PULP INC
- **CENTRAL INDEX KEY:** 0001004156
- **STANDARD INDUSTRIAL CLASSIFICATION:** PULP MILLS [2611]
- **ORGANIZATION NAME:** 04 Manufacturing
- **EIN:** 000000000
- **STATE OF INCORPORATION:** X1
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 6-K
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 033-99720
- **FILM NUMBER:** 251448532

**BUSINESS ADDRESS:**
- **ADDRESS IS A NON US LOCATION:** YES
- **STREET 1:** EL GOLF NO 150
- **STREET 2:** 14TH FL.
- **CITY:** SANTIAGO
- **PROVINCE COUNTRY:** F3
- **BUSINESS PHONE:** 5626981961

**MAIL ADDRESS:**
- **ADDRESS IS A NON US LOCATION:** YES
- **STREET 1:** EL GOLF NO 150
- **STREET 2:** 14TH FL
- **CITY:** SANTIAGO
- **PROVINCE COUNTRY:** F3
- **ZIP:** 00000

**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 November 2025**

**Commission File Number 33-99720**

**ARAUCO AND CONSTITUTION PULP INC.**

**(Translation of registrant's name into English)**

**El Golf 150**

**Fourteenth Floor**

**Santiago, Chile**

**(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 ⌧&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 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): ◻

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 ⌧

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

**EXHIBITS**

---

| | |
|:---|:---|
| **Exhibit** | **Description** |
| [99.1](ara024_ex99-1.htm) | [Material Fact of Celulosa Arauco y Constitución S.A.](ara024_ex99-1.htm) |

---

**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.

---

| | | |
|:---|:---|:---|
|  |  | Celulosa Arauco y Constitución S.A.<br>(Registrant) |
| Date: November 4, 2025 | By: | /s/ Cristián Infante Bilbao |
|  | Name: | Cristián Infante Bilbao |
|  | Title: | Chief Executive Officer |

---

## Exhibit 99.1

**Exhibit 99.1**

**<u>MATERIAL FACT ("*HECHO ESENCIAL*")</u>**

Celulosa Arauco y Constitución S.A.

Santiago, Chile

October 30<sup>th</sup>, 2025

To The Financial Market Commission

**<u>Attention</u>**

Dear Sirs:

On behalf of Celulosa Arauco y Constitución S.A. (the **"Company"** or **"Arauco"**), a closely held corporation organized under the laws of Chile and domiciled at Avenida El Golf No. 150, 14<sup>th</sup> Floor, Las Condes, Metropolitan Region Santiago, Chilean Taxpayer Identification No. 93,458,000-1. The undersigned, being duly entitled for these purposes, hereby informs you of the following material event, concerning the Company and its businesses, pursuant to Article 9 and Article 10, second paragraph, of the Chilean Securities Market Law No. 18,045, and in accordance with General Rule No. 30, issued by the Financial Market Commission (the "**Commission**").

At a meeting of the Board of Directors of Arauco's parent company, Empresas Copec S.A., held today, the Board of Directors approved the General Policy for the Election of Directors in Subsidiaries (the "Policy"), which applies to Arauco in its capacity as a direct subsidiary of Empresas Copec S.A., supervised by the Commission. This Policy was approved to ensure compliance with the provisions set forth in Article 92 bis of the Chilean Corporations Law No. 18,046 and General Rule No. 533 issued by the Commission.

The Policy is permanently available to shareholders and the public on Arauco's website and at its offices located at Avenida El Golf 150, 11th floor, Las Condes, Santiago, as well as on the parent company Empresas Copec's website, and at its offices located at Avenida El Golf 150, 17th floor, Las Condes, Santiago.

![](ara024_ex99-1img02.jpg)

![](ara024_ex99-1img01.jpg)

Very truly yours,

**CELULOSA ARAUCO Y CONSTITUCION S.A.**

Cristián Infante Bilbao

Chief Executive Officer

c.c.

- Santiago Stock Exchange. La Bolsa No. 64, Santiago

- Chilean Electronic Exchange. Huérfanos 770, 14<sup>th</sup> Floor, Santiago

- Representative of the Bondholders (Banco Santander). Bandera 140, Santiago

![](ara024_ex99-1img02.jpg)

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