---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-23-260418"
form_type: "8-K"
ticker: "IRON"
cik: "0001816736"
company_name: "Disc Medicine, Inc."
filed_at: "2023-10-23T23:59:59+00:00"
generated_at: "2026-06-09T17:08:32.982938+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.5
calibrated_materiality_score: 0.5
confidence: "high"
source: SEC EDGAR
---

# Disc Medicine announces planned departure of CFO Joanne Bryce; search for successor initiated

## Summary
- Joanne Bryce plans to depart as CFO effective upon identification of her successor; no disagreement with company.
- Bryce will remain as principal financial and accounting officer until a permanent replacement is hired.
- Company has commenced a formal search for a new CFO; transition expected to be orderly.
- CEO John Quisel thanked Bryce for her leadership since inception, including taking the company public and strengthening balance sheet.

## SEC filing metadata
- accession: 0001193125-23-260418
- form_type: 8-K
- ticker: IRON
- cik: 0001816736
- company_name: Disc Medicine, Inc.
- filed_at: 2023-10-23T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.5
- calibrated_materiality_score: 0.5
- confidence: high
- sec_items: 5.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1816736/000119312523260418/0001193125-23-260418-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1816736/000119312523260418/d561595d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-23-260418
- JSON: https://secwatch.observer/filing/0001193125-23-260418.json
- Plain text: https://secwatch.observer/filing/0001193125-23-260418.txt

## Key facts
- Executive change
  Joanne Bryce departed as Chief Financial Officer at Disc Medicine, Inc..
  - Action: plans to depart
  - Role: Chief Financial Officer
  source text: On October 23, 2023, Disc Medicine, Inc. (the “Company”) announced that Joanne Bryce plans to depart from her position as Chief Financial Officer effective upon the Company identifying her successor.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1816736/000119312523260418/0001193125-23-260418-index.htm

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