# EDGAR Filing Document

**Accession Number:** 0001004156
**File Stem:** 0001575872-25-000546
**Filing Date:** 2025-8
**Character Count:** 3072
**Document Hash:** 8d0b06e284f68b53e735cc8bc570bcb2
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001575872-25-000546.hdr.sgml**: 20250821

**ACCESSION NUMBER**: 0001575872-25-000546

**CONFORMED SUBMISSION TYPE**: 6-K

**PUBLIC DOCUMENT COUNT**: 2

**CONFORMED PERIOD OF REPORT**: 20250821

**FILED AS OF DATE**: 20250821

**DATE AS OF CHANGE**: 20250821

**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:** 251239624

**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 August 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 ⌧ 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 ◻ No ⌧

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

**EXHIBITS**

---

| | |
|:---|:---|
| **Exhibit** | **<u>Description</u>** |
| [99.1](ara022_ex99-1.pdf) | [Material Fact of Celulosa Arauco y Constitución S.A.](ara022_ex99-1.pdf) |

---

**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: August 21, 2025 | By: | /s/ Cristián Infante Bilbao |
|  | Name: | Cristián Infante Bilbao |
|  | Title: | Chief Executive Officer |

---

### Attached PDF Documents

**Attachment 1:** `ara022_ex99-1.pdf`

_No text found in this document._