Summary
Updated Aug 31, 2026
David Thomson is EVP Genl Counsel & Secretary of MANNKIND CORP (MNKD). 8 SEC Form 4 filings on record going back to 2025, most recently on 18 July 2026. Most recent open-market trade: sold $98K of MNKD on 18 July 2026. Lifetime open-market sales: $1.12M.
Recent Transactions
20Every recent SEC Form 4 transaction David Thomson has reported, most recent first.
Trading Pattern
InsiderAlpha's records for David Thomson go back to 2025: 8 primary Form 4 filings, an average of 4.0 per year. 16 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 David Thomson 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.
- Michael Castagna - $1.51M of MNKD open-market activity in the last 12 months
- Stuart A. Tross - $549K of MNKD open-market activity in the last 12 months
- Steven B. Binder - $427K of MNKD open-market activity in the last 12 months
- Sanjay R. Singh - $94K of MNKD 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 David Thomson?
David Thomson is a corporate insider, tracked as EVP Genl Counsel & Secretary of MANNKIND CORP (MNKD). 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 David Thomson submitted recently?
1 primary Form 4 filing in the last 90 days, covering 1 company.
Has David Thomson been buying or selling stock?
Recorded transactions: 0 open-market purchases and 6 open-market sales ($1.12M) across all tracked filings.
Where can I see all of David Thomson'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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