Summary
Updated Aug 31, 2026
Sean D. Keohane is President and CEO, Director of CABOT CORP (CBT). 18 SEC Form 4 filings on record going back to 2024, most recently on 26 August 2026. Most recent open-market trade: sold $238K of CBT on 26 August 2026. Lifetime open-market sales: $17.25M.
Recent Transactions
19Every recent SEC Form 4 transaction Sean D. Keohane has reported, most recent first.
Trading Pattern
InsiderAlpha's records for Sean D. Keohane go back to 2024: 18 primary Form 4 filings, an average of 6.0 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 have reported open-market trades at the same companies as Sean D. Keohane. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
- Hobart Kalkstein - $4.01M of CBT open-market activity on record
- Jeff Ji Zhu - $1.65M of CBT open-market activity on record
- Lisa M. Dumont - $97K of CBT open-market activity on record
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
Frequently Asked Questions
Who is Sean D. Keohane?
Sean D. Keohane is a corporate insider, tracked as President and CEO, Director of CABOT CORP (CBT). InsiderAlpha holds 18 primary Form 4 filings for them, the earliest from 2024, updated as new SEC EDGAR filings are processed.
How many SEC Form 4 filings has Sean D. Keohane submitted recently?
4 primary Form 4 filings in the last 90 days, covering 1 company.
Has Sean D. Keohane been buying or selling stock?
Recorded transactions: 0 open-market purchases and 6 open-market sales ($17.25M) across all tracked filings.
Where can I see all of Sean D. Keohane'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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