---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-25-024408"
form_type: "8-K"
ticker: "ADGM"
cik: "0002006986"
company_name: "Adagio Medical Holdings, Inc."
filed_at: "2025-03-17T23:59:59+00:00"
generated_at: "2026-05-24T16:49:37.998533+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.6
calibrated_materiality_score: 0.6
confidence: "high"
source: SEC EDGAR
---

# CFO John Dahldorf resigns; FULCRUM-VT trial enrollment exceeds 40%

## Summary
- CFO John Dahldorf resigns effective March 21, 2025, no dispute over accounting; transitional CFO to be named.
- FULCRUM-VT pivotal study (vCLAS catheter) enrollment over 40%, on track for full enrollment H2 2025.
- Company to present ULTC data at EHRA 2025 (March 30-April 1) on scar-related VT and PVC ablation.
- Streamlining focus on ventricular tachycardia solutions; CEO notes sufficient financial resources to achieve goals.

## SEC filing metadata
- accession: 0001104659-25-024408
- form_type: 8-K
- ticker: ADGM
- cik: 0002006986
- company_name: Adagio Medical Holdings, Inc.
- filed_at: 2025-03-17T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.6
- calibrated_materiality_score: 0.6
- confidence: high
- sec_items: 5.02, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/2006986/000110465925024408/0001104659-25-024408-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/2006986/000110465925024408/tm259258d1_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-25-024408
- JSON: https://secwatch.observer/filing/0001104659-25-024408.json
- Plain text: https://secwatch.observer/filing/0001104659-25-024408.txt

## Key facts
- Executive change
  John Dahldorf resigned as Chief Financial Officer at Adagio Medical Holdings, Inc..
  - Action: resigned
  - Role: Chief Financial Officer
  source text: On March 11, 2025, John Dahldorf, the Chief Financial Officer of Adagio Medical Holdings, Inc. (the “Company”) announced his decision to resign as Chief Financial Officer, effective March 21, 2025.
  evidence_url: https://www.sec.gov/Archives/edgar/data/2006986/000110465925024408/0001104659-25-024408-index.htm

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