LIVE FROM THE DATABASETRANSACTIONS 362,430COMPANIES 5,763LATEST TRADE Oct 16UPDATED Oct 17, 12:31 AM

Reporting ownerCIK 0001586788

John D. Quisel

32 transactions in 2 companies, from December 11, 2025 to September 23, 2026.

Transactions: 322 companies
Bought · P: $0open market
Sold · S: $12.0Mopen market
Net: −$12.0Mnet selling

By company

Where this insider traded.

Company	Ticker	Trades	Bought	Sold
Disc Medicine, Inc.	IRON	30	—	$12.0M
Gossamer Bio, Inc.	GOSS	2	—	—

All transactions

32 in total, newest filings first.

Company	Ticker	Insider	Date	Code	Shares	Price	Value
Gossamer Bio, Inc.	GOSS	John D. QuiselDirDERIV	Sep 23	A	10,000	$0.00	—?
Disc Medicine, Inc.	IRON	John D. QuiselCEODERIV	Sep 15	M	36,000	$0.00	—?
Disc Medicine, Inc.	IRON	John D. QuiselCEO	Sep 15	M	36,000	$1.01	$36K
Disc Medicine, Inc.	IRON	John D. QuiselCEODERIV	Aug 17	MPLAN	33,000	$0.00	—?
Disc Medicine, Inc.	IRON	John D. QuiselCEO	Aug 17	SPLAN	11,888	$79.84	$949K
Disc Medicine, Inc.	IRON	John D. QuiselCEO	Aug 17	SPLAN	12,712	$79.20	$1.0M
Disc Medicine, Inc.	IRON	John D. QuiselCEO	Aug 17	SPLAN	8,400	$78.11	$656K
Disc Medicine, Inc.	IRON	John D. QuiselCEO	Aug 17	MPLAN	33,000	$13.50	$446K
Disc Medicine, Inc.	IRON	John D. QuiselCEODERIV	Jul 13	MPLAN	7,416	$0.00	—?
Disc Medicine, Inc.	IRON	John D. QuiselCEODERIV	Jul 13	MPLAN	25,584	$0.00	—?
Disc Medicine, Inc.	IRON	John D. QuiselCEO	Jul 13	SPLAN	6,400	$76.05	$487K
Disc Medicine, Inc.	IRON	John D. QuiselCEO	Jul 13	SPLAN	16,896	$74.95	$1.3M
Disc Medicine, Inc.	IRON	John D. QuiselCEO	Jul 13	SPLAN	9,704	$74.27	$721K
Disc Medicine, Inc.	IRON	John D. QuiselCEO	Jul 13	MPLAN	7,416	$13.50	$100K
Disc Medicine, Inc.	IRON	John D. QuiselCEO	Jul 13	MPLAN	25,584	$9.86	$252K
Disc Medicine, Inc.	IRON	John D. QuiselCEODERIV	Jun 18	MPLAN	34,000	$0.00	—?
Disc Medicine, Inc.	IRON	John D. QuiselCEO	Jun 18	SPLAN	1,551	$71.61	$111K
Disc Medicine, Inc.	IRON	John D. QuiselCEO	Jun 18	SPLAN	9,522	$70.70	$673K
Disc Medicine, Inc.	IRON	John D. QuiselCEO	Jun 18	SPLAN	22,927	$69.92	$1.6M
Disc Medicine, Inc.	IRON	John D. QuiselCEO	Jun 18	MPLAN	34,000	$9.86	$335K
Gossamer Bio, Inc.	GOSS	John D. QuiselDirDERIV	Jun 4	A	115,000	$0.00	—?
Disc Medicine, Inc.	IRON	John D. QuiselCEO	Feb 17	S	13,264	$62.86	$834K
Disc Medicine, Inc.	IRON	John D. QuiselCEODERIV	Feb 10	A	82,800	$0.00	—?
Disc Medicine, Inc.	IRON	John D. QuiselCEO	Feb 10	A	55,200	$0.00	—
Disc Medicine, Inc.	IRON	John D. QuiselCEODERIV	Dec 19	M	12,300	$0.00	—?
Disc Medicine, Inc.	IRON	John D. QuiselCEO	Dec 19	M	12,300	$1.01	$12K
Disc Medicine, Inc.	IRON	John D. QuiselCEODERIV	Dec 11	MPLAN	40,000	$0.00	—?
Disc Medicine, Inc.	IRON	John D. QuiselCEO	Dec 11	SPLAN	16,888	$93.65	$1.6M
Disc Medicine, Inc.	IRON	John D. QuiselCEO	Dec 11	SPLAN	16,356	$92.96	$1.5M
Disc Medicine, Inc.	IRON	John D. QuiselCEO	Dec 11	SPLAN	4,337	$92.21	$400K
Disc Medicine, Inc.	IRON	John D. QuiselCEO	Dec 11	SPLAN	2,419	$90.97	$220K
Disc Medicine, Inc.	IRON	John D. QuiselCEO	Dec 11	MPLAN	40,000	$9.86	$394K