SEC Form 4 · accession 0001193125-26-369179

Disc Medicine, Inc. · IRON

Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗

Reporting owner

Officer — Chief Operating Officer

Period of report

Aug 24, 2026

Accepted (ET)

Aug 26, 2026 · 8:10 pm EDT

Rule 10b5-1 plan

yes — trade under a plan

Issuer CIK

0001816736

Table I — non-derivative securities

Security	Date	Code	Shares	Price	A/D	Owned after	D/I
Common Stock	Aug 24, 2026	M	300	$13.50	A	54,624	D
Common Stock^F2	Aug 24, 2026	S	300	$82.5333	D	54,324	D
Common Stock	Aug 25, 2026	M	8,796	$13.50	A	63,120	D
Common Stock^F3	Aug 25, 2026	S	8,796	$83.1164	D	54,324	D

Security	Conv. / exercise price	Date	Code	Shares	A/D	Exercisable	Expires	Underlying	Underlying shares	Owned after	D/I
Stock Option (Right to Buy)^F4	$13.50	Aug 24, 2026	M	300	D	—	Dec 28, 2032	Common Stock	300	22,643	D
Stock Option (Right to Buy)^F4	$13.50	Aug 25, 2026	M	8,796	D	—	Dec 28, 2032	Common Stock	8,796	13,847	D

F1These transactions were effected by the Reporting Person pursuant to a Rule 10b5-1 trading plan adopted on March 17, 2026.
F2The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $82.50 to $82.60, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in footnotes (2) and (3) to this Form 4.
F3The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $82.57 to $83.47, inclusive.
F4The shares underlying this option vest in 48 equal monthly installments following December 29, 2022, subject to the Reporting Person's continued service on each such vesting date.