# EDGAR Filing Document

**Accession Number:** 0001856485
**File Stem:** 0001193125-25-184864
**Filing Date:** 2025-8
**Character Count:** 7103
**Document Hash:** 22b0225fb4bcd5b5e064536d8115f297
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-25-184864.hdr.sgml**: 20250821

**ACCESSION NUMBER**: 0001193125-25-184864

**CONFORMED SUBMISSION TYPE**: 8-K

**PUBLIC DOCUMENT COUNT**: 14

**CONFORMED PERIOD OF REPORT**: 20250821

**ITEM INFORMATION**: Regulation FD Disclosure

**ITEM INFORMATION**: Financial Statements and Exhibits

**FILED AS OF DATE**: 20250821

**DATE AS OF CHANGE**: 20250821

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Sylvamo Corp
- **CENTRAL INDEX KEY:** 0001856485
- **STANDARD INDUSTRIAL CLASSIFICATION:** PAPER MILLS [2621]
- **ORGANIZATION NAME:** 04 Manufacturing
- **EIN:** 862596371
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 8-K
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-40718
- **FILM NUMBER:** 251238669

**BUSINESS ADDRESS:**
- **STREET 1:** 6077 PRIMACY PARKWAY
- **CITY:** MEMPHIS
- **STATE:** TN
- **ZIP:** 38119
- **BUSINESS PHONE:** 901-519-8000

**MAIL ADDRESS:**
- **STREET 1:** 6077 PRIMACY PARKWAY
- **CITY:** MEMPHIS
- **STATE:** TN
- **ZIP:** 38119

?xml version='1.0' encoding='ASCII'? 8-K

### 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): August 21, 2025

## SYLVAMO CORPORATION

#### (Exact name of registrant as specified in its charter)

#### Commission file number 001-40718

---

| | |
|:---|:---|
| **Delaware** | **86-2596371** |
| **(State or other jurisdiction**<br> **of incorporation)** | **(I.R.S. Employer**<br> **Identification No.)** |

---

---

| | |
|:---|:---|
| **6077 Primacy Parkway, Memphis, Tennessee** | **38119** |
| **(Address of Principal Executive Offices)** | **(Zip Code)** |

---

#### Registrant's telephone number, including area code: (901) 519-8000
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 (see General Instruction A.2. below):

☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

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

---

| | | |
|:---|:---|:---|
| **Title of each class** | **Trading<br>Symbol(s)** | **Name of each exchange<br>on which registered** |
| Common Stock, $1 per share par value | SLVM | New York Stock Exchange |

---

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. ☐

------

The information in this Report, including the exhibit, is being furnished pursuant to Item 7.01 of Form 8-K and General Instruction B.2 thereunder. Such information shall not be deemed "filed" for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended.

---

| | |
|:---|:---|
| **Item 7.01** | **Regulation FD Disclosure.**  |

---

On August 21, 2025, Sylvamo Corporation (the "<u>Company</u>") issued a press release relating to the announced plan of International Paper Company ("IP") to convert paper machine no. 16 at its Riverdale Mill to the production of containerboard by the third quarter of 2026. The Riverdale Mill supplies from machine no. 16 certain products to the Company, which the Company sells to its customers (the "<u>Products</u>"). As a result of the conversion, the Riverdale Mill will cease supplying the Products. The Products are supplied pursuant to a Supply and Offtake Agreement, dated as of September 30, 2021 (the "<u>Supply Agreement</u>"), by and between IP and Sylvamo North America LLC, a wholly-owned subsidiary of the Company. The Supply Agreement has not been terminated. A copy of the press release is attached as Exhibit 99.1 and incorporated herein by reference.

---

| | |
|:---|:---|
| **Item 9.01** | **Financial Statements and Exhibits.**  |

---

---

| | |
|:---|:---|
| **Exhibit**<br> **Number** | **Description** |
| 99.1 | [Press Release dated August 21, 2025](d947933dex991.htm) |
| 104 | Cover Page Interactive Data File (embedded within the Inline XBRL document) |

---

------

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 hereunto duly authorized.

---

| | | |
|:---|:---|:---|
| Date: August 21, 2025 | Sylvamo Corporation | Sylvamo Corporation |
|  | By: | /s/ Matthew Barron |
|  | Name: | Matthew Barron |
|  | Title: | Senior Vice President and Chief Administrative and Legal Officer |

---

## Exhibit 99.1

**Exhibit 99.1**![LOGO](g947933g0821012954529.jpg)

**NEWS RELEASE** 

**Riverdale Mill Supply Agreement Update** 

MEMPHIS, Tenn. – Aug. 21, 2025 – International Paper (NYSE: IP) announced plans to convert the No. 16 paper machine at its Riverdale mill in Selma, Alabama, to produce containerboard by the third quarter of 2026. The mill currently supplies Sylvamo (NYSE: SLVM) with approximately 260,000 short tons of cutsize uncoated freesheet annually from the machine through a supply agreement.

"The Riverdale supply agreement is not part of our long-term strategy. We have been planning for this conversion since our 2021 spinoff, including making strategic investments in our footprint in North America. We will support our customers throughout this transition," said Jean-Michel Ribiéras, chairman and chief executive officer, Sylvamo.

More details will be available Thursday in a presentation at <u>investors.sylvamo.com</u>.

**About Sylvamo** 

Sylvamo (NYSE: SLVM) is the world's paper company with mills in Europe, Latin America and North America. Our vision is to be the employer, supplier and investment of choice. We transform renewable resources into papers that people depend on for education, communication and entertainment. Headquartered in Memphis, Tennessee, we employ more than 6,500 colleagues. Net sales for 2024 were $3.8 billion. For more information, please visit <u>Sylvamo.com</u>.

###

Investor Contact: Hans Bjorkman, 901-519-8030, <u>hans.bjorkman@sylvamo.com</u>

Media Contact: Adam Ghassemi, 901-519-8115, <u>adam.ghassemi@sylvamo.com</u>