---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-25-324798"
form_type: "8-K"
ticker: "IMA"
cik: "0001835579"
company_name: "ImageneBio, Inc."
filed_at: "2025-12-18T23:59:59+00:00"
generated_at: "2026-05-16T12:46:43.678886+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.6
confidence: "high"
source: SEC EDGAR
---

# Imagenebio CMO Yufang Lu resigns effective Dec 31, 2025; search underway

## Summary
- Yufang Lu, M.D., Ph.D., Chief Medical Officer, resigned effective December 31, 2025.
- Resignation not due to any disagreement with company operations, policies, or practices.
- Company conducting search for replacement; Lu expected to provide transition advisory services.

## SEC filing metadata
- accession: 0001193125-25-324798
- form_type: 8-K
- ticker: IMA
- cik: 0001835579
- company_name: ImageneBio, Inc.
- filed_at: 2025-12-18T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.6
- confidence: high
- sec_items: 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1835579/000119312525324798/0001193125-25-324798-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1835579/000119312525324798/d945385d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-25-324798
- JSON: https://secwatch.observer/filing/0001193125-25-324798.json
- Plain text: https://secwatch.observer/filing/0001193125-25-324798.txt

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