---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-25-274343"
form_type: "8-K"
ticker: "SLVM"
cik: "0001856485"
company_name: "Sylvamo Corp"
filed_at: "2025-11-10T23:59:59+00:00"
generated_at: "2026-05-16T22:37:06.943991+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.65
calibrated_materiality_score: 0.65
confidence: "high"
source: SEC EDGAR
---

# Sylvamo adopts limited-duration rights plan after Atlas Holdings ends cooperation agreement

## Summary
- Atlas Holdings terminated cooperation agreement; its two directors resigned; standstill restrictions end Nov. 13, 2025.
- Atlas holds ~21.5% economic exposure: 16% beneficial ownership and 5.5% via derivatives.
- Rights plan triggers at 15% beneficial ownership (20% for certain passive investors), expires Nov. 9, 2026.
- Rights plan similar to 2022 plan but trigger threshold raised from 10% to 15%.
- Upon trigger, non-acquiring holders can buy shares at 50% discount or receive one share per right via exchange.

## SEC filing metadata
- accession: 0001193125-25-274343
- form_type: 8-K
- ticker: SLVM
- cik: 0001856485
- company_name: Sylvamo Corp
- filed_at: 2025-11-10T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.65
- calibrated_materiality_score: 0.65
- confidence: high
- sec_items: 1.01, 3.03, 5.03, 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1856485/000119312525274343/0001193125-25-274343-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1856485/000119312525274343/d69252d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-25-274343
- JSON: https://secwatch.observer/filing/0001193125-25-274343.json
- Plain text: https://secwatch.observer/filing/0001193125-25-274343.txt

## Key facts
- Governance Changes
  Sylvamo Corp: Filed a Certificate of Designations designating Series B Preferred Stock in connection with the adoption of a Rights Agreement (effective 2025-11-10).
  - Change: charter amendment
  - Effective: 2025-11-10
  source text: Item 5.03. Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year. In connection with the adoption of the Rights Agreement, on November 10, 2025, the Company filed a Certificate of Designations designating Series B Preferred Stock with the Delaware Secretary of State.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1856485/000119312525274343/0001193125-25-274343-index.htm

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.