Summary
Updated Aug 31, 2026
Nelson Chai files SEC Form 4 reports at Chubb Ltd (CB). 4 SEC Form 4 filings on record going back to 2025, most recently on 26 May 2026.
Recent Transactions
6Every recent SEC Form 4 transaction Nelson Chai has reported, most recent first.
Trading Pattern
InsiderAlpha's records for Nelson Chai go back to 2025: 4 primary Form 4 filings, an average of 2.0 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 Nelson Chai 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.
- Michel Lagarde - $51.31M of TMO open-market activity in the last 12 months
- Marc N. Casper - $45.46M of TMO open-market activity in the last 12 months
- Michael D. Shafer - $22.54M of TMO open-market activity in the last 12 months
- Lisa P. Britt - $16.87M of TMO open-market activity in the last 12 months
- Timothy Alan Boroughs - $12.62M of CB open-market activity in the last 12 months
- John J. Lupica - $11.51M of CB 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 Nelson Chai?
Nelson Chai is a corporate insider of Chubb Ltd (CB). InsiderAlpha holds 4 primary Form 4 filings for them, the earliest from 2025, updated as new SEC EDGAR filings are processed.
When did Nelson Chai last file a Form 4?
The most recent primary Form 4 on record is dated 26 May 2026, one of 4 filings going back to 2025.
Where can I see all of Nelson Chai'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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