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 821, 2025

SYLVAMO CORPORATION

(Exact name of registrant as specified in its charter)

Commission file number 001-40718

Delaware	86-2596371	~~86-2596371~~
(State or other jurisdictionof incorporation)		(I.R.S. EmployerIdentification No.)
(State or other jurisdiction of incorporation)	(I.R.S. Employer 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


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))

☐	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		TradingSymbol(s)	~~Trading Symbol(s)~~	Name of each exchangeon which registered		~~Name of each exchange on which registered~~
Common Stock, $1 per share par value		SLVM	~~SLVM~~	New York Stock Exchange		~~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. ☐

1The 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.

~~EXPLANATORY~~Item ~~NOTE~~7.01 Regulation FD Disclosure.

~~The~~On ~~information~~August 21, in2025, ~~this~~Sylvamo ~~Report,~~Corporation ~~including~~(the “Company”) issued a press release relating to the ~~exhibit,~~announced isplan ~~being~~of ~~furnished~~International ~~pursuant~~Paper Company (“IP”) to ~~Item 2~~convert paper machine no.02 16 at its Riverdale Mill to the production of ~~Form~~containerboard ~~8-K~~by ~~and~~the ~~General~~third ~~Instruction~~quarter Bof 2026.2 ~~thereunder~~The Riverdale Mill supplies from machine no. ~~Such~~16 ~~information~~certain ~~shall~~products ~~not~~to bethe ~~deemed~~Company, which the Company sells to its customers (the “~~filed~~Products”). ~~for~~As ~~purposes~~a result of ~~Section 18~~the ofconversion, the ~~Securities~~Riverdale ~~Exchange~~Mill ~~Act~~will ofcease ~~1934,~~supplying asthe ~~amended,~~Products. The orProducts ~~otherwise~~are ~~subject~~supplied pursuant to ~~the~~a ~~liabilities~~Supply ofand ~~that~~Offtake ~~section~~Agreement, ~~nor~~dated ~~shall~~as itof beSeptember 30, ~~deemed~~2021 ~~incorporated~~(the “Supply Agreement”), by ~~reference~~and inbetween ~~any~~IP ~~filing~~and ~~under~~Sylvamo North America LLC, a wholly-owned subsidiary of the ~~Securities~~Company. ~~Act~~The Supply Agreement has not been terminated. A copy of ~~1933,~~the press release is attached as ~~amended~~Exhibit 99.1 and incorporated herein by reference.

~~SECTION~~Item 29.01 ~~FINANCIAL~~Financial ~~INFORMATION~~Statements and Exhibits.

Item 2.02. Results of Operations and Financial Condition.


Exhibit Number		Description

99.1		Press Release dated August 21, 2025

104		Cover Page Interactive Data File (embedded within the Inline XBRL document)

On August 8, 2025, Sylvamo Corporation issued a press release announcing its financial results for the fiscal quarter ended June 30, 2025. Attached as Exhibit 99.1 and incorporated herein by reference is a copy of the press release.

SECTION 9. FINANCIAL STATEMENTS AND EXHIBITS.

Item 9.01. Financial Statements and Exhibits.

(d) Exhibits.

ExhibitNumber			Description
99.1			Press Release of Sylvamo Corporation dated August 8, 2025.
101			Cover Page Interactive Data File - the cover page XBRL tags are embedded within the Inline XBRL document.
104			The cover page from this Current Report on Form 8-K, formatted as Inline XBRL.

SIGNATURES

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.

	Sylvamo Corporation
Date: August 21, 2025		Sylvamo Corporation
Date: August 8, 2025			/s/ Matthew L. Barron
		By:	/s/ Matthew Barron
	~~Name:~~	Name:	Matthew L. Barron
	~~Title:~~	Title:	Senior Vice President and Chief Administrative and Legal Officer

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