Summary
Updated Aug 31, 2026
James C. Hamilton is Chief Medical Officer of ARROWHEAD PHARMACEUTICALS, INC. (ARWR). 6 SEC Form 4 filings on record going back to 2025, most recently on 24 April 2026. Most recent open-market trade: sold $750K of ARWR on 24 April 2026. Lifetime open-market sales: $3.12M.
Recent Transactions
7Every recent SEC Form 4 transaction James C. Hamilton has reported, most recent first.
Trading Pattern
InsiderAlpha's records for James C. Hamilton go back to 2025: 6 primary Form 4 filings, an average of 3.0 per year. 3 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 James C. Hamilton 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.
- Christopher Richard Anzalone - $12.35M of ARWR open-market activity in the last 12 months
- Michael S. Perry - $1.01M of ARWR open-market activity in the last 12 months
- Daniel Joseph Apel - $934K of ARWR open-market activity in the last 12 months
- Mauro Ferrari - $493K of ARWR open-market activity in the last 12 months
- Hongbo Lu - $228K of ARWR open-market activity in the last 12 months
- Adeoye Y. Olukotun - $174K of ARWR 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 James C. Hamilton?
James C. Hamilton is a corporate insider, tracked as Chief Medical Officer of ARROWHEAD PHARMACEUTICALS, INC. (ARWR). InsiderAlpha holds 6 primary Form 4 filings for them, the earliest from 2025, updated as new SEC EDGAR filings are processed.
When did James C. Hamilton last file a Form 4?
The most recent primary Form 4 on record is dated 24 April 2026, one of 6 filings going back to 2025.
Has James C. Hamilton been buying or selling stock?
Recorded transactions: 0 open-market purchases and 7 open-market sales ($3.12M) across all tracked filings.
Where can I see all of James C. Hamilton'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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