---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-23-289224"
form_type: "8-K"
ticker: "IRON"
cik: "0001816736"
company_name: "Disc Medicine, Inc."
filed_at: "2023-12-05T23:59:59+00:00"
generated_at: "2026-06-07T18:11:14.925110+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.6
calibrated_materiality_score: 0.6
confidence: "high"
source: SEC EDGAR
---

# Disc Medicine amends ATM agreement to increase potential offering from $59.7M to $200.0M

## Summary
- As of Dec 5, 2023, only $7.2M of Initial $59.7M shares had been sold under original Oct 2023 ATM.
- Amendment raises aggregate offering price to $200.0M, allowing additional share sales via Jefferies.
- Prior prospectus sales terminated; new registration statement (S-3 File 333-275652) used for remaining shares.
- Material terms unchanged; legal opinion from Goodwin Procter attached.

## SEC filing metadata
- accession: 0001193125-23-289224
- form_type: 8-K
- ticker: IRON
- cik: 0001816736
- company_name: Disc Medicine, Inc.
- filed_at: 2023-12-05T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.6
- calibrated_materiality_score: 0.6
- confidence: high
- sec_items: 1.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1816736/000119312523289224/0001193125-23-289224-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1816736/000119312523289224/d632975d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-23-289224
- JSON: https://secwatch.observer/filing/0001193125-23-289224.json
- Plain text: https://secwatch.observer/filing/0001193125-23-289224.txt

## Key facts
- Material Agreements
  Disc Medicine, Inc. amended Open Market Sale Agreement with Jefferies LLC valued at Increase aggregate offering price from $59.7 million to $200.0 million (effective 2023-12-05).
  - Action: amendment
  - Agreement: atm program
  - Counterparty: Jefferies LLC
  - Value: Increase aggregate offering price from $59.7 million to $200.0 million
  - Effective: 2023-12-05
  source text: On December 5, 2023, the Company and Jefferies entered into an amendment to the Agreement (the “Amendment”) to increase the aggregate offering price of the shares of common stock that the Company may offer under the Agreement from $59.7 million to $200.0 million (the “Additional Shares”).
  evidence_url: https://www.sec.gov/Archives/edgar/data/1816736/000119312523289224/0001193125-23-289224-index.htm

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