Summary
Updated Aug 31, 2026
John D. Quisel is Chief Executive Officer, Director of Disc Medicine, Inc. (IRON). 12 SEC Form 4 filings on record going back to 2024, most recently on 18 August 2026. Most recent open-market trade: sold $949K of IRON on 18 August 2026. Lifetime open-market sales: $12.61M.
Recent Transactions
20Every recent SEC Form 4 transaction John D. Quisel has reported, most recent first.
Trading Pattern
InsiderAlpha's records for John D. Quisel go back to 2024: 12 primary Form 4 filings, an average of 4.0 per year. 28 recorded transactions carry a Rule 10b5-1 flag, meaning they were pre-scheduled under a written trading plan rather than discretionary.
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies John D. Quisel files at. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
- AI DMI LLC - $59.87M of IRON open-market activity in the last 12 months
- Kevin Bitterman - $31.22M of IRON open-market activity in the last 12 months
- Jonathan Yen-Wen Yu - $5.59M of IRON open-market activity in the last 12 months
- William Jacob Savage - $2.27M of IRON open-market activity in the last 12 months
- Rahul Khara - $1.87M of IRON open-market activity in the last 12 months
- Jean M. Franchi - $1.20M of IRON open-market activity in the last 12 months
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
Frequently Asked Questions
Who is John D. Quisel?
John D. Quisel is a corporate insider, tracked as Chief Executive Officer, Director of Disc Medicine, Inc. (IRON). InsiderAlpha holds 12 primary Form 4 filings for them, the earliest from 2024, updated as new SEC EDGAR filings are processed.
How many SEC Form 4 filings has John D. Quisel submitted recently?
4 primary Form 4 filings in the last 90 days, covering 2 companies.
Has John D. Quisel been buying or selling stock?
Recorded transactions: 0 open-market purchases and 20 open-market sales ($12.61M) across all tracked filings.
Where can I see all of John D. Quisel's SEC filings?
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
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