AI DMI LLC - 22 Oct 2025 Form 4 Insider Report for Disc Medicine, Inc. (IRON)

Reporting relationship: 10%+ Owner
Issuer ticker: IRON
Reported as of: 22 Oct 2025
Net transaction value: -$59,873,462
SEC form: 4
Accepted by SEC: 24 Oct 2025, 16:01:03 UTC
Prior SEC filing: 20 Jun 2024
Source filing: View source filing
Reporting owner signature: /s/ Alejandro Moreno for AI DMI LLC

Key filing fact

AI DMI LLC filed Form 4 for Disc Medicine, Inc. (IRON) on 24 Oct 2025.

Key facts

This page summarizes AI DMI LLC's Form 4 filing for Disc Medicine, Inc. (IRON).
1 reported transaction and 0 derivative rows are listed below.
Accepted by SEC: 24 Oct 2025, 16:01.

Change

Previous filing in this sequence was filed on 20 Jun 2024.
Current net transaction value: -$59,873,462.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (4)

CIK 0001890993 Primary reporting owner

AI DMI LLC

Relationship: 10%+ Owner
Address: C/O ACCESS INDUSTRIES, INC., 40 WEST 57TH STREET, 28TH FLOOR, NEW YORK
Signature: /s/ Alejandro Moreno for AI DMI LLC
Signature date: 24 Oct 2025

CIK 0001391297

Access Industries Holdings LLC

Relationship: 10%+ Owner
Address: C/O ACCESS INDUSTRIES, INC., 40 WEST 57TH STREET, 28TH FLOOR, NEW YORK
Signature: /s/ Alejandro Moreno for Access Industries Holdings LLC
Signature date: 24 Oct 2025

CIK 0001508226

ACCESS INDUSTRIES MANAGEMENT, LLC

Relationship: 10%+ Owner
Address: C/O ACCESS INDUSTRIES, INC., 40 WEST 57TH STREET, 28TH FLOOR, NEW YORK
Signature: /s/ Alejandro Moreno for Access Industries Management, LLC
Signature date: 24 Oct 2025

CIK 0001326628

Blavatnik Len

Relationship: 10%+ Owner
Address: C/O ACCESS INDUSTRIES, INC., 40 WEST 57TH STREET, 28TH FLOOR, NEW YORK
Signature: /s/ Alejandro Moreno as Attorney-in-Fact for Mr. Blavatnik
Signature date: 24 Oct 2025

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

IRON transaction

Common Stock

Sale

Transaction value: $59,873,462
Shares: -744,047
Change %: -21%
Price: $80.47
Shares after: 2,814,379
Date: 22 Oct 2025
Ownership: Direct
Footnotes: F1, F2

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Section 16 status

AI DMI LLC is no longer subject to Section 16 filing requirements. Form 4 or Form 5 obligations may still apply in specific circumstances.

Explanation of responses 2 footnotes

Footnote F1

On October 22, 2025, AI DMI LLC ("AI DMI") sold 744,047 shares of common stock of Disc Medicine, Inc., par value $0.0001 per share, pursuant to an underwritten secondary offering.

Footnote F2

The securities reported are held directly by AI DMI and may be deemed to be beneficially owned by Access Industries Holdings LLC ("AIH"), Access Industries Management, LLC ("AIM") and Len Blavatnik because Len Blavatnik controls AIM and holds a majority of the outstanding voting interests in AIH, AIM controls AIH, and AIH indirectly controls all of the outstanding voting interests in AI DMI LLC. Each of the reporting persons (other than AI DMI) disclaims beneficial ownership of these securities, except to the extent of its or his pecuniary interest therein, and this form shall not be construed as an admission that any such reporting person is the beneficial owner of any of the securities reported on this form.