Barron Matthew

SEC source: 0001878541-26-000004 · primarydocument.xml · derivative · entry 1

Barron Matthew · CIK 0001878541 · SVP, Chief Admin & Legal

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,546.1942

Underlying: Common Stock · 177.2215 shares

Expires not disclosed

F1 · derivative.exercise_price: Consists of dividend equivalent units ("DEUs") accrued on restricted stock units ("RSUs") previously granted to the Reporting Person. The DEUs will vest and be settled on the same terms and conditions as the original RSUs to which they relate. Each DEU represents the right to receive, subject to vesting, one share of Sylvamo Corporation common stock. The number of DEUs has been rounded to 4 decimal points.

F1 · derivative.exercise_date: Consists of dividend equivalent units ("DEUs") accrued on restricted stock units ("RSUs") previously granted to the Reporting Person. The DEUs will vest and be settled on the same terms and conditions as the original RSUs to which they relate. Each DEU represents the right to receive, subject to vesting, one share of Sylvamo Corporation common stock. The number of DEUs has been rounded to 4 decimal points.

F1 · derivative.expiration_date: Consists of dividend equivalent units ("DEUs") accrued on restricted stock units ("RSUs") previously granted to the Reporting Person. The DEUs will vest and be settled on the same terms and conditions as the original RSUs to which they relate. Each DEU represents the right to receive, subject to vesting, one share of Sylvamo Corporation common stock. The number of DEUs has been rounded to 4 decimal points.

SEC source: 0001878541-26-000003 · primarydocument.xml · derivative · entry 1

Barron Matthew · CIK 0001878541 · SVP, Chief Admin & Legal

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,368.9727

Underlying: Common Stock · 156.6893 shares

Expires not disclosed

F1 · derivative.exercise_price: Consists of dividend equivalent units ("DEUs") accrued on restricted stock units ("RSUs") previously granted to the Reporting Person. The DEUs will vest and be settled on the same terms and conditions as the original RSUs to which they relate. Each DEU represents the right to receive, subject to vesting, one share of Sylvamo Corporation common stock. The number of DEUs has been rounded to 4 decimal points.

F1 · derivative.exercise_date: Consists of dividend equivalent units ("DEUs") accrued on restricted stock units ("RSUs") previously granted to the Reporting Person. The DEUs will vest and be settled on the same terms and conditions as the original RSUs to which they relate. Each DEU represents the right to receive, subject to vesting, one share of Sylvamo Corporation common stock. The number of DEUs has been rounded to 4 decimal points.

F1 · derivative.expiration_date: Consists of dividend equivalent units ("DEUs") accrued on restricted stock units ("RSUs") previously granted to the Reporting Person. The DEUs will vest and be settled on the same terms and conditions as the original RSUs to which they relate. Each DEU represents the right to receive, subject to vesting, one share of Sylvamo Corporation common stock. The number of DEUs has been rounded to 4 decimal points.

SEC source: 0001878541-26-000002 · primarydocument.xml · nonDerivative · entry 3

Barron Matthew · CIK 0001878541 · SVP, Chief Admin & Legal

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 48,438.7217

F3 · kind: Represents shares withheld for taxes in connection with vesting of RSUs and PSUs, rounded to four decimal places. The deemed disposition of the withheld shares is exempt pursuant to Rule 16b-3(e).

SEC source: 0001878541-26-000002 · primarydocument.xml · nonDerivative · entry 2

Barron Matthew · CIK 0001878541 · SVP, Chief Admin & Legal

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 51,917.3171

F2 · shares: The reported securities represent performance-based restricted stock units ("PSUs") that vested and settled one-for-one in common stock on March 1, 2026, rounded to four decimal places. The PSUs were granted on March 1, 2023 under the issuer's long-term incentive plan, with vesting contingent upon the achievement of financial performance criteria.

SEC source: 0001878541-26-000002 · primarydocument.xml · nonDerivative · entry 1

Barron Matthew · CIK 0001878541 · SVP, Chief Admin & Legal

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 44,063.3245

F1 · shares: The reported securities represent time-based restricted stock units ("RSUs") that settle one-for-one in common stock upon vesting. The RSUs will vest, subject to the reporting person's continued service, one third on each of March 1, 2027, March 1, 2028, and March 1, 2029. Accelerated vesting of a prorated number of the RSUs would occur, based upon length of service during the RSU vesting period and subject to the RSU award terms and conditions, upon employment termination resulting in severance rights, resulting from a business divestiture, or due to death, disability or retirement.

SEC source: 0001878541-26-000001 · primarydocument.xml · derivative · entry 1

Barron Matthew · CIK 0001878541 · SVP, Chief Admin & Legal

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,212.2834

Underlying: Common Stock · 111.081 shares

Expires not disclosed

F1 · derivative.exercise_price: Consists of dividend equivalent units ("DEUs") accrued on restricted stock units ("RSUs") previously granted to the Reporting Person. The DEUs will vest and be settled on the same terms and conditions as the original RSUs to which they relate. Each DEU represents the right to receive, subject to vesting, one share of Sylvamo Corporation common stock. The number of DEUs has been rounded to 4 decimal points.

F1 · derivative.exercise_date: Consists of dividend equivalent units ("DEUs") accrued on restricted stock units ("RSUs") previously granted to the Reporting Person. The DEUs will vest and be settled on the same terms and conditions as the original RSUs to which they relate. Each DEU represents the right to receive, subject to vesting, one share of Sylvamo Corporation common stock. The number of DEUs has been rounded to 4 decimal points.

F1 · derivative.expiration_date: Consists of dividend equivalent units ("DEUs") accrued on restricted stock units ("RSUs") previously granted to the Reporting Person. The DEUs will vest and be settled on the same terms and conditions as the original RSUs to which they relate. Each DEU represents the right to receive, subject to vesting, one share of Sylvamo Corporation common stock. The number of DEUs has been rounded to 4 decimal points.

SEC source: 0001878541-25-000002 · primarydocument.xml · derivative · entry 1

Barron Matthew · CIK 0001878541 · SVP, Chief Admin & Legal

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,101.2024

Underlying: Common Stock · 133.5851 shares

Expires not disclosed

F1 · derivative.exercise_price: Consists of dividend equivalent units ("DEUs") accrued on restricted stock units ("RSUs") previously granted to the Reporting Person. The DEUs will vest and be settled on the same terms and conditions as the original RSUs to which they relate. Each DEU represents the right to receive, subject to vesting, one share of Sylvamo Corporation common stock. The number of DEUs has been rounded to 4 decimal points.

F1 · derivative.exercise_date: Consists of dividend equivalent units ("DEUs") accrued on restricted stock units ("RSUs") previously granted to the Reporting Person. The DEUs will vest and be settled on the same terms and conditions as the original RSUs to which they relate. Each DEU represents the right to receive, subject to vesting, one share of Sylvamo Corporation common stock. The number of DEUs has been rounded to 4 decimal points.

F1 · derivative.expiration_date: Consists of dividend equivalent units ("DEUs") accrued on restricted stock units ("RSUs") previously granted to the Reporting Person. The DEUs will vest and be settled on the same terms and conditions as the original RSUs to which they relate. Each DEU represents the right to receive, subject to vesting, one share of Sylvamo Corporation common stock. The number of DEUs has been rounded to 4 decimal points.

SEC source: 0001562180-25-005597 · primarydocument.xml · derivative · entry 1

Barron Matthew · CIK 0001878541 · SVP, Chief Admin & Legal

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 967.6173

Underlying: Common Stock · 115.4914 shares

Expires not disclosed

F1 · derivative.exercise_price: Consists of dividend equivalent units ("DEUs") accrued on restricted stock units ("RSUs") previously granted to the Reporting Person. The DEUs will vest and be settled on the same terms and conditions as the original RSUs to which they relate. Each DEU represents the right to receive, subject to vesting, one share of Sylvamo Corporation common stock. The number of DEUs has been rounded to 4 decimal points.

F1 · derivative.exercise_date: Consists of dividend equivalent units ("DEUs") accrued on restricted stock units ("RSUs") previously granted to the Reporting Person. The DEUs will vest and be settled on the same terms and conditions as the original RSUs to which they relate. Each DEU represents the right to receive, subject to vesting, one share of Sylvamo Corporation common stock. The number of DEUs has been rounded to 4 decimal points.

F1 · derivative.expiration_date: Consists of dividend equivalent units ("DEUs") accrued on restricted stock units ("RSUs") previously granted to the Reporting Person. The DEUs will vest and be settled on the same terms and conditions as the original RSUs to which they relate. Each DEU represents the right to receive, subject to vesting, one share of Sylvamo Corporation common stock. The number of DEUs has been rounded to 4 decimal points.

SEC source: 0001562180-25-003423 · primarydocument.xml · derivative · entry 1

Barron Matthew · CIK 0001878541 · SVP, Chief Admin & Legal

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 852.1259

Underlying: Common Stock · 91.1994 shares

Expires not disclosed

F1 · derivative.exercise_price: Consists of dividend equivalent units ("DEUs") accrued on restricted stock units ("RSUs") previously granted to the Reporting Person. The DEUs will vest and be settled on the same terms and conditions as the original RSUs to which they relate. Each DEU represents the right to receive, subject to vesting, one share of Sylvamo Corporation common stock. The number of DEUs has been rounded to 4 decimal points.

F1 · derivative.exercise_date: Consists of dividend equivalent units ("DEUs") accrued on restricted stock units ("RSUs") previously granted to the Reporting Person. The DEUs will vest and be settled on the same terms and conditions as the original RSUs to which they relate. Each DEU represents the right to receive, subject to vesting, one share of Sylvamo Corporation common stock. The number of DEUs has been rounded to 4 decimal points.

F1 · derivative.expiration_date: Consists of dividend equivalent units ("DEUs") accrued on restricted stock units ("RSUs") previously granted to the Reporting Person. The DEUs will vest and be settled on the same terms and conditions as the original RSUs to which they relate. Each DEU represents the right to receive, subject to vesting, one share of Sylvamo Corporation common stock. The number of DEUs has been rounded to 4 decimal points.

SEC source: 0001562180-25-001928 · primarydocument.xml · nonDerivative · entry 3

Barron Matthew · CIK 0001878541 · SVP, Chief Admin & Legal

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 35,195.3245

F3 · kind: Represents shares withheld for taxes in connection with vesting of RSUs and PSUs, rounded to four decimal places. The deemed disposition of the withheld shares is exempt pursuant to Rule 16b-3(e).

SEC source: 0001562180-25-001928 · primarydocument.xml · nonDerivative · entry 2

Barron Matthew · CIK 0001878541 · SVP, Chief Admin & Legal

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 40,675.7664

F2 · shares: The reported securities represent performance-based restricted stock units ("PSUs") that vested and settled one-for-one in common stock on March 1, 2025, rounded to four decimal places. The PSUs were granted on February 22, 2022 under the issuer's long-term incentive plan, with vesting contingent upon the achievement of financial performance criteria.

SEC source: 0001562180-25-001928 · primarydocument.xml · nonDerivative · entry 1

Barron Matthew · CIK 0001878541 · SVP, Chief Admin & Legal

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 30,095.5779

F1 · shares: The reported securities represent time-based restricted stock units ("RSUs") that settle one-for-one in common stock upon vesting. The RSUs will vest, subject to the reporting person's continued service, one third on each of March 1, 2026, March 1, 2027, and March 1, 2028. Accelerated vesting of a prorated number of the RSUs would occur, based upon length of service during the RSU vesting period and subject to the RSU award terms and conditions, upon employment termination resulting in severance rights, resulting from a business divestiture, or due to death, disability or retirement.

SEC source: 0001562180-25-000584 · primarydocument.xml · derivative · entry 1

Barron Matthew · CIK 0001878541 · SVP, Chief Admin & Legal

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 760.9265

Underlying: Common Stock · 71.2592 shares

Expires not disclosed

F1 · derivative.exercise_price: Consists of dividend equivalent units ("DEUs") accrued on restricted stock units ("RSUs") previously granted to the Reporting Person. The DEUs will vest and be settled on the same terms and conditions as the original RSUs to which they relate. Each DEU represents the right to receive, subject to vesting, one share of Sylvamo Corporation common stock. The number of DEUs has been rounded to 4 decimal points.

F1 · derivative.exercise_date: Consists of dividend equivalent units ("DEUs") accrued on restricted stock units ("RSUs") previously granted to the Reporting Person. The DEUs will vest and be settled on the same terms and conditions as the original RSUs to which they relate. Each DEU represents the right to receive, subject to vesting, one share of Sylvamo Corporation common stock. The number of DEUs has been rounded to 4 decimal points.

F1 · derivative.expiration_date: Consists of dividend equivalent units ("DEUs") accrued on restricted stock units ("RSUs") previously granted to the Reporting Person. The DEUs will vest and be settled on the same terms and conditions as the original RSUs to which they relate. Each DEU represents the right to receive, subject to vesting, one share of Sylvamo Corporation common stock. The number of DEUs has been rounded to 4 decimal points.

SEC source: 0001562180-24-007389 · primarydocument.xml · derivative · entry 1

Barron Matthew · CIK 0001878541 · SVP, Chief Admin & Legal

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 689.6673

Underlying: Common Stock · 66.132 shares

Expires not disclosed

F1 · derivative.exercise_price: Consists of dividend equivalent units ("DEUs") accrued on restricted stock units ("RSUs") previously granted to the Reporting Person. The DEUs will vest and be settled on the same terms and conditions as the original RSUs to which they relate. Each DEU represents the right to receive, subject to vesting, one share of Sylvamo Corporation common stock. The number of DEUs has been rounded to 4 decimal points.

F1 · derivative.exercise_date: Consists of dividend equivalent units ("DEUs") accrued on restricted stock units ("RSUs") previously granted to the Reporting Person. The DEUs will vest and be settled on the same terms and conditions as the original RSUs to which they relate. Each DEU represents the right to receive, subject to vesting, one share of Sylvamo Corporation common stock. The number of DEUs has been rounded to 4 decimal points.

F1 · derivative.expiration_date: Consists of dividend equivalent units ("DEUs") accrued on restricted stock units ("RSUs") previously granted to the Reporting Person. The DEUs will vest and be settled on the same terms and conditions as the original RSUs to which they relate. Each DEU represents the right to receive, subject to vesting, one share of Sylvamo Corporation common stock. The number of DEUs has been rounded to 4 decimal points.

SEC source: 0001562180-24-005889 · primarydocument.xml · derivative · entry 1

Barron Matthew · CIK 0001878541 · SVP, Chief Admin & Legal

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 623.5353

Underlying: Common Stock · 75.2322 shares

Expires not disclosed

F1 · derivative.exercise_price: Consists of dividend equivalent units ("DEUs") accrued on restricted stock units ("RSUs") previously granted to the Reporting Person. The DEUs will vest and be settled on the same terms and conditions as the original RSUs to which they relate. Each DEU represents the right to receive, subject to vesting, one share of Sylvamo Corporation common stock. The number of DEUs has been rounded to 4 decimal points.

F1 · derivative.exercise_date: Consists of dividend equivalent units ("DEUs") accrued on restricted stock units ("RSUs") previously granted to the Reporting Person. The DEUs will vest and be settled on the same terms and conditions as the original RSUs to which they relate. Each DEU represents the right to receive, subject to vesting, one share of Sylvamo Corporation common stock. The number of DEUs has been rounded to 4 decimal points.

F1 · derivative.expiration_date: Consists of dividend equivalent units ("DEUs") accrued on restricted stock units ("RSUs") previously granted to the Reporting Person. The DEUs will vest and be settled on the same terms and conditions as the original RSUs to which they relate. Each DEU represents the right to receive, subject to vesting, one share of Sylvamo Corporation common stock. The number of DEUs has been rounded to 4 decimal points.

SEC source: 0001562180-24-003656 · primarydocument.xml · derivative · entry 1

Barron Matthew · CIK 0001878541 · SVP, Chief Admin & Legal

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 548.3031

Underlying: Common Stock · 60.6486 shares

Expires not disclosed

F1 · derivative.exercise_price: Consists of dividend equivalent units ("DEUs") accrued on restricted stock units ("RSUs") previously granted to the Reporting Person. The DEUs will vest and be settled on the same terms and conditions as the original RSUs to which they relate. Each DEU represents the right to receive, subject to vesting, one share of Sylvamo Corporation common stock. The number of DEUs has been rounded to 4 decimal points.

F1 · derivative.exercise_date: Consists of dividend equivalent units ("DEUs") accrued on restricted stock units ("RSUs") previously granted to the Reporting Person. The DEUs will vest and be settled on the same terms and conditions as the original RSUs to which they relate. Each DEU represents the right to receive, subject to vesting, one share of Sylvamo Corporation common stock. The number of DEUs has been rounded to 4 decimal points.

F1 · derivative.expiration_date: Consists of dividend equivalent units ("DEUs") accrued on restricted stock units ("RSUs") previously granted to the Reporting Person. The DEUs will vest and be settled on the same terms and conditions as the original RSUs to which they relate. Each DEU represents the right to receive, subject to vesting, one share of Sylvamo Corporation common stock. The number of DEUs has been rounded to 4 decimal points.

SEC source: 0001562180-24-002269 · primarydocument.xml · nonDerivative · entry 2

Barron Matthew · CIK 0001878541 · SVP, Chief Admin & Legal

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 24,609.5779

F2 · shares: The reported securities represent time-based restricted stock units ("RSUs") that settle one-for-one in common stock upon vesting. The RSUs will vest, subject to the reporting person's continued service, one-third on each of March 1, 2025, March 1, 2026, and March 1, 2027. Accelerated vesting of a prorated number of the RSUs would occur, based upon length of service during the RSU vesting period and subject to the RSU award terms and conditions, upon employment termination resulting in severance rights, resulting from a business divestiture, or due to death, disability or retirement.

SEC source: 0001562180-24-002269 · primarydocument.xml · nonDerivative · entry 1

Barron Matthew · CIK 0001878541 · SVP, Chief Admin & Legal

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 17,500.5779

F1 · kind: Represents shares withheld for taxes in connection with vesting of RSUs. The deemed disposition of the withheld shares is exempt pursuant to Rule 16b-3(e).

SEC source: 0001562180-24-000755 · primarydocument.xml · derivative · entry 1

Barron Matthew · CIK 0001878541 · SVP, Gen Counsel & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 487.6545

Underlying: Common Stock · 73.8137 shares

Expires not disclosed

F1 · derivative.exercise_price: Consists of dividend equivalent units ("DEUs") accrued on restricted stock units ("RSUs") previously granted to the Reporting Person. The DEUs will vest and be settled on the same terms and conditions as the original RSUs to which they relate. Each DEU represents the right to receive, subject to vesting, one share of Sylvamo Corporation common stock. The number of DEUs has been rounded to 4 decimal points.

F1 · derivative.exercise_date: Consists of dividend equivalent units ("DEUs") accrued on restricted stock units ("RSUs") previously granted to the Reporting Person. The DEUs will vest and be settled on the same terms and conditions as the original RSUs to which they relate. Each DEU represents the right to receive, subject to vesting, one share of Sylvamo Corporation common stock. The number of DEUs has been rounded to 4 decimal points.

F1 · derivative.expiration_date: Consists of dividend equivalent units ("DEUs") accrued on restricted stock units ("RSUs") previously granted to the Reporting Person. The DEUs will vest and be settled on the same terms and conditions as the original RSUs to which they relate. Each DEU represents the right to receive, subject to vesting, one share of Sylvamo Corporation common stock. The number of DEUs has been rounded to 4 decimal points.

SEC source: 0001562180-23-007382 · primarydocument.xml · derivative · entry 1

Barron Matthew · CIK 0001878541 · SVP, Gen Counsel & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 413.8408

Underlying: Common Stock · 158.7928 shares

Expires not disclosed

F1 · derivative.exercise_price: Consists of dividend equivalent units ("DEUs") accrued on restricted stock units ("RSUs") previously granted to the Reporting Person. The DEUs will vest and be settled on the same terms and conditions as the original RSUs to which they relate. Each DEU represents the right to receive, subject to vesting, one share of Sylvamo Corporation common stock. The number of DEUs has been rounded to 4 decimal points.

F1 · derivative.exercise_date: Consists of dividend equivalent units ("DEUs") accrued on restricted stock units ("RSUs") previously granted to the Reporting Person. The DEUs will vest and be settled on the same terms and conditions as the original RSUs to which they relate. Each DEU represents the right to receive, subject to vesting, one share of Sylvamo Corporation common stock. The number of DEUs has been rounded to 4 decimal points.

F1 · derivative.expiration_date: Consists of dividend equivalent units ("DEUs") accrued on restricted stock units ("RSUs") previously granted to the Reporting Person. The DEUs will vest and be settled on the same terms and conditions as the original RSUs to which they relate. Each DEU represents the right to receive, subject to vesting, one share of Sylvamo Corporation common stock. The number of DEUs has been rounded to 4 decimal points.

SEC source: 0001562180-23-006053 · primarydocument.xml · derivative · entry 1

Barron Matthew · CIK 0001878541 · SVP, Gen Counsel & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 255.048

Underlying: Common Stock · 63.2445 shares

Expires not disclosed

F1 · derivative.exercise_price: Consists of dividend equivalent units ("DEUs") accrued on restricted stock units ("RSUs") previously granted to the Reporting Person. The DEUs will vest and be settled on the same terms and conditions as the original RSUs to which they relate. Each DEU represents the right to receive, subject to vesting, one share of Sylvamo Corporation common stock. The number of DEUs has been rounded to 4 decimal points.

F1 · derivative.exercise_date: Consists of dividend equivalent units ("DEUs") accrued on restricted stock units ("RSUs") previously granted to the Reporting Person. The DEUs will vest and be settled on the same terms and conditions as the original RSUs to which they relate. Each DEU represents the right to receive, subject to vesting, one share of Sylvamo Corporation common stock. The number of DEUs has been rounded to 4 decimal points.

F1 · derivative.expiration_date: Consists of dividend equivalent units ("DEUs") accrued on restricted stock units ("RSUs") previously granted to the Reporting Person. The DEUs will vest and be settled on the same terms and conditions as the original RSUs to which they relate. Each DEU represents the right to receive, subject to vesting, one share of Sylvamo Corporation common stock. The number of DEUs has been rounded to 4 decimal points.

SEC source: 0001562180-23-003771 · primarydocument.xml · derivative · entry 1

Barron Matthew · CIK 0001878541 · SVP, Gen Counsel & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 191.8035

Underlying: Common Stock · 65.2811 shares

Expires not disclosed

F1 · derivative.exercise_price: Consists of dividend equivalent units ("DEUs") accrued on restricted stock units ("RSUs") previously granted to the Reporting Person. The DEUs will vest and be settled on the same terms and conditions as the original RSUs to which they relate. Each DEU represents the right to receive, subject to vesting, one share of Sylvamo Corporation common stock. The number of DEUs has been rounded to 4 decimal points.

F1 · derivative.exercise_date: Consists of dividend equivalent units ("DEUs") accrued on restricted stock units ("RSUs") previously granted to the Reporting Person. The DEUs will vest and be settled on the same terms and conditions as the original RSUs to which they relate. Each DEU represents the right to receive, subject to vesting, one share of Sylvamo Corporation common stock. The number of DEUs has been rounded to 4 decimal points.

F1 · derivative.expiration_date: Consists of dividend equivalent units ("DEUs") accrued on restricted stock units ("RSUs") previously granted to the Reporting Person. The DEUs will vest and be settled on the same terms and conditions as the original RSUs to which they relate. Each DEU represents the right to receive, subject to vesting, one share of Sylvamo Corporation common stock. The number of DEUs has been rounded to 4 decimal points.

SEC source: 0001562180-23-002264 · primarydocument.xml · nonDerivative · entry 2

Barron Matthew · CIK 0001878541 · SVP, Gen Counsel & Secretary

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 19,128.5179

F2 · kind: Represents shares withheld for taxes in connection with vesting of RSUs. The deemed disposition of the withheld shares is exempt pursuant to Rule 16b-3(e).

SEC source: 0001562180-23-002264 · primarydocument.xml · nonDerivative · entry 1

Barron Matthew · CIK 0001878541 · SVP, Gen Counsel & Secretary

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 20,261

F1 · shares: The reported securities represent time-based restricted stock units ("RSUs") that settle one-for-one in common stock upon vesting. The RSUs will vest, subject to the reporting person's continued service, one-third on each of March 1, 2024, March 1, 2025, and March 1, 2026.

SEC source: 0001562180-23-000632 · primarydocument.xml · derivative · entry 1

Barron Matthew · CIK 0001878541 · SVP, Gen Counsel & Secretary

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 126.5224

Underlying: Common Stock · 58.1598 shares

Expires not disclosed

F1 · derivative.exercise_price: Consists of dividend equivalent units ("DEUs") accrued on restricted stock units ("RSUs") previously granted to the Reporting Person. The DEUs will vest and be settled on the same terms and conditions as the original RSUs to which they relate. Each DEU represents the right to receive, subject to vesting, one share of Sylvamo Corporation common stock. The number of DEUs has been rounded to 4 decimal points.

F1 · derivative.exercise_date: Consists of dividend equivalent units ("DEUs") accrued on restricted stock units ("RSUs") previously granted to the Reporting Person. The DEUs will vest and be settled on the same terms and conditions as the original RSUs to which they relate. Each DEU represents the right to receive, subject to vesting, one share of Sylvamo Corporation common stock. The number of DEUs has been rounded to 4 decimal points.

F1 · derivative.expiration_date: Consists of dividend equivalent units ("DEUs") accrued on restricted stock units ("RSUs") previously granted to the Reporting Person. The DEUs will vest and be settled on the same terms and conditions as the original RSUs to which they relate. Each DEU represents the right to receive, subject to vesting, one share of Sylvamo Corporation common stock. The number of DEUs has been rounded to 4 decimal points.

SEC source: 0001562180-22-007267 · primarydocument.xml · derivative · entry 1

Barron Matthew · CIK 0001878541 · SVP, Gen Counsel & Secretary

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 68.3626

Underlying: Common Stock · 28.0244 shares

Expires not disclosed

F1 · derivative.exercise_price: Consists of dividend equivalent units ("DEUs") accrued on restricted stock units ("RSUs") previously granted to the Reporting Person. The DEUs will vest and be settled on the same terms and conditions as the original RSUs to which they relate. Each DEU represents the right to receive, subject to vesting, one share of Sylvamo Corporation common stock. The number of DEUs has been rounded to 4 decimal points.

F1 · derivative.exercise_date: Consists of dividend equivalent units ("DEUs") accrued on restricted stock units ("RSUs") previously granted to the Reporting Person. The DEUs will vest and be settled on the same terms and conditions as the original RSUs to which they relate. Each DEU represents the right to receive, subject to vesting, one share of Sylvamo Corporation common stock. The number of DEUs has been rounded to 4 decimal points.

F1 · derivative.expiration_date: Consists of dividend equivalent units ("DEUs") accrued on restricted stock units ("RSUs") previously granted to the Reporting Person. The DEUs will vest and be settled on the same terms and conditions as the original RSUs to which they relate. Each DEU represents the right to receive, subject to vesting, one share of Sylvamo Corporation common stock. The number of DEUs has been rounded to 4 decimal points.

SEC source: 0001562180-22-006746 · primarydocument.xml · derivative · entry 1

Barron Matthew · CIK 0001878541 · SVP, Gen Counsel & Secretary

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 40.3382

Underlying: Common Stock · 40.3382 shares

Expires not disclosed

F1 · derivative.exercise_price: Consists of dividend equivalent units ("DEUs") accrued on restricted stock units ("RSUs") previously granted to the Reporting Person. The DEUs will vest and be settled on the same terms and conditions as the original RSUs to which they relate. Each DEU is the economic equivalent of one share of Sylvamo Corporation common stock. The number of DEUs has been rounded to 4 decimal points.

F1 · derivative.exercise_date: Consists of dividend equivalent units ("DEUs") accrued on restricted stock units ("RSUs") previously granted to the Reporting Person. The DEUs will vest and be settled on the same terms and conditions as the original RSUs to which they relate. Each DEU is the economic equivalent of one share of Sylvamo Corporation common stock. The number of DEUs has been rounded to 4 decimal points.

F1 · derivative.expiration_date: Consists of dividend equivalent units ("DEUs") accrued on restricted stock units ("RSUs") previously granted to the Reporting Person. The DEUs will vest and be settled on the same terms and conditions as the original RSUs to which they relate. Each DEU is the economic equivalent of one share of Sylvamo Corporation common stock. The number of DEUs has been rounded to 4 decimal points.

SEC source: 0000899243-22-027652 · doc4.xml · nonDerivative · entry 1

Barron Matthew · CIK 0001878541 · SVP, Gen Counsel & Secretary

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 14,753

F1 · kind: Represents shares withheld for taxes in connection with vesting of RSUs. The deemed disposition of the withheld shares is exempt pursuant to Rule16b-3(e).

SEC source: 0001562180-22-002200 · primarydocument.xml · nonDerivative · entry 1

Barron Matthew · CIK 0001878541 · SVP, Gen Counsel & Secretary

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 15,293

F1 · shares: Represents shares withheld for taxes in connection with vesting of RSUs. The deemed disposition of the withheld shares is exempt pursuant to Rule 16b-3(e).

SEC source: 0001562180-22-001844 · primarydocument.xml · nonDerivative · entry 1

Barron Matthew · CIK 0001878541 · SVP, Gen Counsel & Secretary

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 15,997

F1 · shares: The reported securities represent time-based restricted stock units ("RSUs") that settle one-for-one in common stock upon vesting. The RSUs will vest, subject to the reporting person's continued service, one-third on each of March 1, 2023, March 1, 2024 and March 1, 2025.

SEC source: 0001562180-21-006508 · primarydocument.xml · nonDerivative · entry 2

Barron Matthew · CIK 0001878541 · SVP, Gen Counsel & Secretary

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 10,953

F2 · kind: 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.

SEC source: 0001562180-21-006508 · primarydocument.xml · nonDerivative · entry 1

Barron Matthew · CIK 0001878541 · SVP, Gen Counsel & Secretary

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,216

F1 · kind: The restricted stock units (units) reported were awarded to the insider under the Sylvamo Corporation 2021 Incentive Compensation Plan as a replacement for restricted stock forfeited by the insider 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 on August 1, 2022.