X0609 4/A 2026-05-15 2026-05-19 false 0001856485 Sylvamo Corp SLVM 0001299140 PETRATIS DAVID D false 6077 PRIMACY PARKWAY MEMPHIS TN 38119 true false false false false Common Stock 2026-05-15 4 A false 10207.00 38.70 A 37690.00 D This Form 4/A amends the Form 4 originally filed on May 19, 2026, to correct the number of shares reported as acquired. The number of shares originally reported was understated due to administrative error. The corrected number of shares acquired is 10,207. The reported securities represent 3,876 time-based restricted stock units ("RSUs") and 6,331 RSUs that the reporting person elected to receive in lieu of a cash retainer. The RSUs will vest one-for-one in common stock on the earlier of May 13, 2027, or the next annual shareowners meeting. The reporting person has elected to defer the settlement of vested RSUs until the first to occur of May 13, 2032, or the termination of his service as a director. The RSUs were granted to the reporting person on May 15, 2026, for service as a director for the 2026-2027 performance year. /s/ Erin Raccah, attorney in fact for David D. Petratis 2026-06-02