Summary
Updated Aug 31, 2026
Matthew B. Klein is CHIEF EXECUTIVE OFFICER, Director of PTC THERAPEUTICS, INC. (PTCT). 14 SEC Form 4 filings on record going back to 2025, most recently on 6 August 2026. Most recent open-market trade: sold $706K of PTCT on 6 August 2026. Lifetime open-market sales: $4.48M.
Recent Transactions
20Every recent SEC Form 4 transaction Matthew B. Klein has reported, most recent first.
Trading Pattern
InsiderAlpha's records for Matthew B. Klein go back to 2025: 14 primary Form 4 filings, an average of 7.0 per year. 15 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 Matthew B. Klein 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.
- Neil Gregory Almstead - $19.99M of PTCT open-market activity in the last 12 months
- Mark Elliott Boulding - $8.67M of PTCT open-market activity in the last 12 months
- Emma Reeve - $5.11M of PTCT open-market activity in the last 12 months
- Eric Pauwels - $4.88M of PTCT open-market activity in the last 12 months
- Michael Schmertzler - $3.61M of PTCT open-market activity in the last 12 months
- Allan Steven Jacobson - $2.91M of PTCT 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 Matthew B. Klein?
Matthew B. Klein is a corporate insider, tracked as CHIEF EXECUTIVE OFFICER, Director of PTC THERAPEUTICS, INC. (PTCT). InsiderAlpha holds 14 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 Matthew B. Klein submitted recently?
1 primary Form 4 filing in the last 90 days, covering 1 company.
Has Matthew B. Klein been buying or selling stock?
Recorded transactions: 0 open-market purchases and 15 open-market sales ($4.48M) across all tracked filings.
Where can I see all of Matthew B. Klein'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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