---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-26-290542"
form_type: "8-K"
ticker: "IRON"
cik: "0001816736"
company_name: "Disc Medicine, Inc."
filed_at: "2026-06-30T20:16:18+00:00"
generated_at: "2026-06-30T20:17:28.319337+00:00"
event_type: "debt"
sentiment: "neutral"
materiality_score: 0.55
calibrated_materiality_score: 0.55
confidence: "high"
source: SEC EDGAR
---

# Disc Medicine amends loan with Hercules, draws $30M, extends draw periods

## Summary
- Drew $30M of Tranche 1-B advance under existing loan agreement with Hercules Capital.
- Existing $50M Tranche 1-C split into $25M available through March 31, 2027 and $25M Tranche 1-D through April 30, 2027.
- Tranche 2 and Tranche 3 draw periods extended to December 15, 2027 and June 30, 2028, respectively.
- Minimum cash covenant testing date moved to July 1, 2028.

## SEC filing metadata
- accession: 0001193125-26-290542
- form_type: 8-K
- ticker: IRON
- cik: 0001816736
- company_name: Disc Medicine, Inc.
- filed_at: 2026-06-30T20:16:18+00:00
- event_type: debt
- sentiment: neutral
- materiality_score: 0.55
- calibrated_materiality_score: 0.55
- confidence: high
- sec_items: 1.01, 2.03
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1816736/000119312526290542/0001193125-26-290542-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1816736/000119312526290542/iron-20260625.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-26-290542
- JSON: https://secwatch.observer/filing/0001193125-26-290542.json
- Plain text: https://secwatch.observer/filing/0001193125-26-290542.txt

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