---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-26-023436"
form_type: "8-K"
ticker: "KRRO"
cik: "0001703647"
company_name: "Korro Bio, Inc."
filed_at: "2026-01-27T23:59:59+00:00"
generated_at: "2026-05-16T07:33:27.542087+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.4
calibrated_materiality_score: 0.4
confidence: "low"
source: SEC EDGAR
---

# Korro Bio holds Analyst Day highlighting KRRO-121 for ammonia control

## Summary
- Hosted virtual Analyst Day on Jan 27, 2026, presenting on KRRO-121 for ammonia control.
- KRRO-121 described as a potential first-in-class treatment for ammonia control.
- No specific clinical data or milestones disclosed in the filing.

## SEC filing metadata
- accession: 0001193125-26-023436
- form_type: 8-K
- ticker: KRRO
- cik: 0001703647
- company_name: Korro Bio, Inc.
- filed_at: 2026-01-27T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.4
- calibrated_materiality_score: 0.4
- confidence: low
- sec_items: 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1703647/000119312526023436/0001193125-26-023436-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1703647/000119312526023436/krro-20260127.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-26-023436
- JSON: https://secwatch.observer/filing/0001193125-26-023436.json
- Plain text: https://secwatch.observer/filing/0001193125-26-023436.txt

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