Summary
Updated Aug 30, 2026
Donald William Nicholson files SEC Form 4 reports at Disc Medicine, Inc. (IRON). 2 SEC Form 4 filings on record, most recently on 23 June 2026.
Recent Transactions
1Every recent SEC Form 4 transaction Donald William Nicholson has reported, most recent first.
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies Donald William Nicholson 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
- John D. Quisel - $8.31M 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
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
Frequently Asked Questions
Who is Donald William Nicholson?
Donald William Nicholson is a corporate insider of Disc Medicine, Inc. (IRON). InsiderAlpha holds 2 primary Form 4 filings for them, the earliest from 2026, updated as new SEC EDGAR filings are processed.
How many SEC Form 4 filings has Donald William Nicholson submitted recently?
1 primary Form 4 filing in the last 90 days, covering 1 company.
Where can I see all of Donald William Nicholson'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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