---
schema_version: "secwatch.filing_event.v1"
accession: "0001530950-24-000151"
form_type: "8-K"
ticker: "POST"
cik: "0001530950"
company_name: "Post Holdings, Inc."
filed_at: "2024-05-29T23:59:59+00:00"
generated_at: "2026-06-01T07:40:21.689224+00:00"
event_type: "other_material"
sentiment: "negative"
materiality_score: 0.75
calibrated_materiality_score: 0.75
confidence: "high"
source: SEC EDGAR
---

# Avian influenza hits 5.7M hens at Michael Foods contracted farms; FY2024 guidance affirmed

## Summary
- Approximately 5.7M egg-laying hens (~14% of controlled supply) at contracted farms in Minnesota and Iowa tested positive for avian influenza.
- Post affirms FY2024 Adjusted EBITDA guidance of $1,335-$1,375 million; management believes financial impact is within range tolerances.
- Guidance does not assume significant expansion; cumulative effect beyond additional 5% of supply would trigger further disclosure.
- No update on specific incidents unless additional 5% threshold is breached; APHIS/USDA track individual cases.

## SEC filing metadata
- accession: 0001530950-24-000151
- form_type: 8-K
- ticker: POST
- cik: 0001530950
- company_name: Post Holdings, Inc.
- filed_at: 2024-05-29T23:59:59+00:00
- event_type: other_material
- sentiment: negative
- materiality_score: 0.75
- calibrated_materiality_score: 0.75
- confidence: high
- sec_items: 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1530950/000153095024000151/0001530950-24-000151-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1530950/000153095024000151/post-20240529.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001530950-24-000151
- JSON: https://secwatch.observer/filing/0001530950-24-000151.json
- Plain text: https://secwatch.observer/filing/0001530950-24-000151.txt

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