---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-24-282047"
form_type: "8-K"
ticker: "LNTH"
cik: "0001521036"
company_name: "Lantheus Holdings, Inc."
filed_at: "2024-12-19T23:59:59+00:00"
generated_at: "2026-05-29T01:37:20.279668+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.5
calibrated_materiality_score: 0.5
confidence: "high"
source: SEC EDGAR
---

# Lantheus CMO Jeff Humphrey to depart Jan 3, 2025; search underway for replacement

## Summary
- Jeff Humphrey, MD, resigns as Chief Medical Officer; last day January 3, 2025.
- Departure not due to disagreement with company or board on operations, clinical programs, or policies.
- CEO Brian Markison and President Paul Blanchfield assume interim leadership of R&D.
- Company has initiated a search for a new Chief Medical Officer.

## SEC filing metadata
- accession: 0001193125-24-282047
- form_type: 8-K
- ticker: LNTH
- cik: 0001521036
- company_name: Lantheus Holdings, Inc.
- filed_at: 2024-12-19T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.5
- calibrated_materiality_score: 0.5
- confidence: high
- sec_items: 7.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1521036/000119312524282047/0001193125-24-282047-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1521036/000119312524282047/d883378d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-24-282047
- JSON: https://secwatch.observer/filing/0001193125-24-282047.json
- Plain text: https://secwatch.observer/filing/0001193125-24-282047.txt

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