Sec Form 4 Filing - Ribieras JeanMichel @ Sylvamo Corp - 2021-10-15

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person Ribieras JeanMichel 2. Issuer Name and Ticker or Trading Symbol Sylvamo Corp [ SLVM] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X __ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) Chairman and CEO (Last) (First) (Middle) 6400 POPLAR AVENUE 3. Date of Earliest Transaction (MM/DD/YY) 10/15/2021 (Street) MEMPHIS, TN38197 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) __ X __ Form filed by One Reporting Person _____ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock 10/15/2021 A( 1 ) 102,336 A $ 0 107,923 ( 2 ) D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Ribieras JeanMichel 6400 POPLAR AVENUE MEMPHIS, TN38197 X Chairman and CEO Signatures /s/ Erin Raccah, attorney in fact for Jean-Michel Ribieras 10/19/2021 Signature of Reporting Person Date

Explanation of Responses:

( 1 )The restricted stock units (units) reported were awarded to the insider under the Sylvamo Corporation 2021 Incentive Compensation Plan as a replacement for performance share units forfeited by the insider under the International Paper Performance Share Plan as a result of the spinoff of International Paper's global papers business to create Sylvamo Corporation. Each unit represents the right, subject to vesting, to receive one share of Sylvamo common stock. The units will vest as follows: (i) 33% on March 1, 2022; (ii) 33% on March 1, 2023; and (iii) 33% on March 1, 2024. ( 2 )Consists of: (i) the 102,336 units described in footnote (1) and (ii) 5,587 shares of Sylvamo common stock acquired in connection with the distribution of Sylvamo Corporation shares to all holders of International Paper stock on October 1, 2021, upon the spinoff of International Paper's global papers business to create Sylvamo Corporation.

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

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