Summary
Updated Aug 30, 2026
Charles W. Newhall III is Director of SUPERNUS PHARMACEUTICALS, INC. (SUPN). 8 SEC Form 4 filings on record going back to 2024, most recently on 25 February 2026. Most recent open-market trade: sold $62K of SUPN on 9 October 2025. Lifetime open-market sales: $1.93M.
Recent Transactions
9Every recent SEC Form 4 transaction Charles W. Newhall III has reported, most recent first.
Trading Pattern
InsiderAlpha's records for Charles W. Newhall III go back to 2024: 8 primary Form 4 filings, an average of 2.7 per year. 2 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 Charles W. Newhall III 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.
- Jack A. Khattar - $12.74M of SUPN open-market activity in the last 12 months
- Padmanabh P. Bhatt - $5.39M of SUPN open-market activity in the last 12 months
- Georges Gemayel - $1.00M of SUPN open-market activity in the last 12 months
- William Todd Horich - $484K of SUPN open-market activity in the last 12 months
- Frank Mottola - $316K of SUPN open-market activity in the last 12 months
- Frederick M. Hudson - $272K of SUPN 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 Charles W. Newhall III?
Charles W. Newhall III is a corporate insider, tracked as Director of SUPERNUS PHARMACEUTICALS, INC. (SUPN). InsiderAlpha holds 8 primary Form 4 filings for them, the earliest from 2024, updated as new SEC EDGAR filings are processed.
When did Charles W. Newhall III last file a Form 4?
The most recent primary Form 4 on record is dated 25 February 2026, one of 8 filings going back to 2024.
Has Charles W. Newhall III been buying or selling stock?
Recorded transactions: 0 open-market purchases and 6 open-market sales ($1.93M) across all tracked filings.
Where can I see all of Charles W. Newhall III'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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