Key facts
- This page summarizes John D. Quisel's Form 4 filing for Disc Medicine, Inc. (IRON).
- 2 reported transactions and 1 derivative row are listed below.
- Accepted by SEC: 19 Dec 2025, 18:16.
John D. Quisel - 19 Dec 2025 Form 4 Insider Report for Disc Medicine, Inc. (IRON)
- Reporting relationship
- Chief Executive Officer, Director
- Issuer ticker
- IRON
- Reported as of
- 19 Dec 2025
- Net transaction value
- +$12,423
- SEC form
- 4
- Accepted by SEC
- 19 Dec 2025, 18:16:36 UTC
- Prior SEC filing
- 15 Dec 2025
- Next SEC filing
- 11 Feb 2026
- Source filing
- View source filing
- Reporting owner signature
- By: /s/ Rahul Khara, as Attorney-in-Fact
Source evidence
Original filing metadata and source links for verification.
5 source fields
Reporting owner
1 detail
Filing notes and source
Key filing fact
John D. Quisel filed Form 4 for Disc Medicine, Inc. (IRON) on 19 Dec 2025.
Change
- Previous filing in this sequence was filed on 15 Dec 2025.
- Current net transaction value: +$12,423.
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
View source filing
Ownership activity is grounded in SEC Form 4 disclosures.
Reporting Owners (1)
CIK 0001586788
Primary reporting owner
Quisel John D
- Relationship
- Chief Executive Officer, Director
- Address
- C/O DISC MEDICINE, INC., 321 ARSENAL STREET, SUITE 101, WATERTOWN
- Signature
- By: /s/ Rahul Khara, as Attorney-in-Fact
- Signature date
- 19 Dec 2025
Reported non-derivative transactions
Shares, units, or other non-derivative securities reported in this filing.
IRON
transaction
Common Stock
Options Exercise
- Transaction value
- $12,423
- Shares
- +12,300
- Change %
- +7.2%
- Price
- $1.01
- Shares after
- 184,128
- Date
- 19 Dec 2025
- Ownership
- Direct
Reported derivative securities
Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.
IRON
transaction
Derivative
Stock Option (Right to Buy)
Options Exercise
- Transaction value
- $0
- Shares
- -12,300
- Change %
- -6.2%
- Price
- $0.000000
- Shares after
- 186,120
- Date
- 19 Dec 2025
- Ownership
- Direct
- Underlying class
- Common Stock
- Underlying amount
- 12,300
- Exercise price
- $1.01
- Footnotes
- F1
* marks a reported price that did not pass the local price check.
Additional SEC filing notes
Filing notes and footnotes
Explanation of responses 1 footnote
Footnote F1
The shares underlying this option are fully vested and exercisable as of the date hereof.