StockCIK 1816736

Disc Medicine, Inc. (IRON): Insider Trades and Fund Holdings

In the past 12 months, Disc Medicine, Inc. insiders reported 0 open-market purchases worth $0 and 12 sales worth $13.2M; 11 of the sales were reported as made under a 10b5-1 trading plan.

0Insider buys, 12 months

$0Bought by insiders, 12 months

$13.2MSold by insiders, 12 months

0Tracked funds holding

Recent insider trades

Open-market purchases (code P) and sales (code S) from Form 4. Grants, option exercises and gifts are not shown. Latest filing: Oct 21, 2026.

Recent IRON insider trades
Filed	Traded	Insider	Role	Type	Shares	Price ($)	Value	Holding	Filing
Oct 21	Oct 21	Kevin BittermanDirector	Director (ind.)	▼ SELL10b5-1	25,519	80.23	$2.05M	−66%	Form 4 ↗
Oct 21	Oct 19	Kevin BittermanDirector	Director (ind.)	▼ SELL10b5-1	10,994	79.97	$879K	−45%	Form 4 ↗
Oct 21	Oct 20	Kevin BittermanDirector	Director (ind.)	▼ SELL10b5-1	5,312	79.95	$425K	−29%	Form 4 ↗
Sep 15	Sep 11	Kevin BittermanDirector	Director	▼ SELL	27,136	70.11	$1.90M	All sold	Form 4 ↗
Sep 9	Sep 4	Kevin BittermanDirector	Director (ind.)	▼ SELL10b5-1	1,689	79.96	$135K	−11%	Form 4 ↗
Sep 3	Sep 2	Kevin BittermanDirector	Director (ind.)	▼ SELL10b5-1	49,164	80.17	$3.94M	−79%	Form 4 ↗
Sep 3	Sep 3	Kevin BittermanDirector	Director (ind.)	▼ SELL10b5-1	5,203	79.98	$416K	−1.6%	Form 4 ↗
Sep 3	Sep 1	Kevin BittermanDirector	Director (ind.)	▼ SELL10b5-1	129	79.95	$10K	−0.9%	Form 4 ↗
Aug 26	Aug 25	Jonathan Yen-Wen YuCOO	COO	▼ SELL10b5-1	8,796	83.12	$731K	−14%	Form 4 ↗
Aug 26	Aug 24	Jonathan Yen-Wen YuCOO	COO	▼ SELL10b5-1	300	82.53	$25K	−0.5%	Form 4 ↗

Source: SEC Form 4 filings, retrieved Oct 28, 2026. How we read filings

All 12 IRON insider trades →

Insiders who traded in the past year

Insider	Role	Bought	Sells	Sold	Latest
Kevin Bitterman	Director	$0	8	$9.76M	Oct 21, 2026
Jonathan Yen-Wen Yu	COO	$0	3	$822K	Aug 26, 2026
John D. Quisel	CEO	$0	1	$2.61M	Aug 18, 2026

Tracked funds that report IRON

From each fund's latest 13F. Holdings are as of quarter end and are filed up to 45 days later.

Fund	Quarter	Shares	Value	% of portfolio	Change
Renaissance Technologies	Q2 2026	0	$0	0.00%	▼ Sold out

Source: SEC Form 13F-HR filings, retrieved Oct 28, 2026. How we read filings

Reading these numbers

Insiders sell for many reasons: taxes, diversification, a house. Purchases with their own money are rarer and are usually read as more informative. A Form 4 is due within two business days of the trade. How to read a Form 4 →