Summary
Updated Aug 31, 2026
Stuart Poulton is EVP, Chief Development Officer of Karyopharm Therapeutics Inc. (KPTI). 8 SEC Form 4 filings on record going back to 2025, most recently on 30 July 2026. Most recent open-market trade: sold $1K of KPTI on 30 July 2026. Lifetime open-market sales: $60K.
Recent Transactions
10Every recent SEC Form 4 transaction Stuart Poulton has reported, most recent first.
Trading Pattern
InsiderAlpha's records for Stuart Poulton go back to 2025: 8 primary Form 4 filings, an average of 4.0 per year. No transaction on record carries a Rule 10b5-1 flag - the filings look discretionary rather than pre-scheduled, which makes their timing more informative as a signal.
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies Stuart Poulton 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.
- Richard A. Paulson - $145K of KPTI open-market activity in the last 12 months
- Reshma Rangwala - $58K of KPTI open-market activity in the last 12 months
- Sohanya Roshan Cheng - $48K of KPTI open-market activity in the last 12 months
- Michael Mano - $37K of KPTI open-market activity in the last 12 months
- Lori Macomber - $10K of KPTI open-market activity in the last 12 months
- Kristin Abate - $10K of KPTI 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 Stuart Poulton?
Stuart Poulton is a corporate insider, tracked as EVP, Chief Development Officer of Karyopharm Therapeutics Inc. (KPTI). InsiderAlpha holds 8 primary Form 4 filings for them, the earliest from 2025, updated as new SEC EDGAR filings are processed.
How many SEC Form 4 filings has Stuart Poulton submitted recently?
1 primary Form 4 filing in the last 90 days, covering 1 company.
Has Stuart Poulton been buying or selling stock?
Recorded transactions: 0 open-market purchases and 6 open-market sales ($60K) across all tracked filings.
Where can I see all of Stuart Poulton'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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