---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-25-321015"
form_type: "8-K"
ticker: "SNDA"
cik: "0001043000"
company_name: "SONIDA SENIOR LIVING, INC."
filed_at: "2025-12-16T23:59:59+00:00"
generated_at: "2026-05-16T12:59:43.554097+00:00"
event_type: "other"
sentiment: "neutral"
materiality_score: 0.25
calibrated_materiality_score: 0.25
confidence: "high"
source: SEC EDGAR
---

# Sonida Senior Living adopts advance notice bylaw provisions for director nominations

## Summary
- Board approved Third Amendment to Bylaws effective December 10, 2025.
- Adds procedures for advance notice of stockholder nominations and other business at meetings.
- Provisions previously in certificate of incorporation; now codified in bylaws.
- No material financial impact; governance update only.

## SEC filing metadata
- accession: 0001193125-25-321015
- form_type: 8-K
- ticker: SNDA
- cik: 0001043000
- company_name: SONIDA SENIOR LIVING, INC.
- filed_at: 2025-12-16T23:59:59+00:00
- event_type: other
- sentiment: neutral
- materiality_score: 0.25
- calibrated_materiality_score: 0.25
- confidence: high
- sec_items: 5.03, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1043000/000119312525321015/0001193125-25-321015-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1043000/000119312525321015/d93890d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-25-321015
- JSON: https://secwatch.observer/filing/0001193125-25-321015.json
- Plain text: https://secwatch.observer/filing/0001193125-25-321015.txt

## Key facts
- Governance Changes
  SONIDA SENIOR LIVING, INC.: The Third Amendment to the Second Amended and Restated Bylaws added procedures regarding advance notice of stockholder nominations and other business, effective immediately (effective 2025-12-10).
  - Change: bylaw amendment
  - Effective: 2025-12-10
  source text: On December 10, 2025, the board of directors of Sonida Senior Living, Inc. (the “Company”) approved and adopted the Third Amendment to the Second Amended and Restated Bylaws of the Company (the “Third Amendment” and the Second Amended and Restated Bylaws of the Company, as amended prior to the Third Amendment, the “Bylaws”), which became effective immediately.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1043000/000119312525321015/0001193125-25-321015-index.htm

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