Summary
Updated Aug 30, 2026
Denis K. Sheahan is Chief Executive Officer of Eastern Bankshares, Inc. (EBC). 4 SEC Form 4 filings on record going back to 2025, most recently on 5 March 2026. Most recent open-market trade: sold $14 of EBC on 3 March 2026. Lifetime open-market purchases: $497K. Lifetime open-market sales: $14.
Recent Transactions
6Every recent SEC Form 4 transaction Denis K. Sheahan has reported, most recent first.
Trading Pattern
InsiderAlpha's records for Denis K. Sheahan go back to 2025: 4 primary Form 4 filings, an average of 2.0 per year. The typical open-market purchase is $497K (1 buy totaling $497K). The largest single buy on record is $497K of EBC in 2025. Sales side: 1 recorded sale totaling $14, so the filing history runs buy-heavy by dollar value. 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 Denis K. Sheahan 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.
- Joseph F. Casey - $7.10M of EBC open-market activity in the last 12 months
- Robert Francis Rivers - $861K of EBC open-market activity in the last 12 months
- R. David Rosato - $528K of EBC open-market activity in the last 12 months
- Donald Michael Westermann - $427K of EBC open-market activity in the last 12 months
- Luis Borgen - $249K of EBC open-market activity in the last 12 months
- David Andrew Ahlquist - $217K of EBC 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 Denis K. Sheahan?
Denis K. Sheahan is a corporate insider, tracked as Chief Executive Officer of Eastern Bankshares, Inc. (EBC). InsiderAlpha holds 4 primary Form 4 filings for them, the earliest from 2025, updated as new SEC EDGAR filings are processed.
When did Denis K. Sheahan last file a Form 4?
The most recent primary Form 4 on record is dated 5 March 2026, one of 4 filings going back to 2025.
Has Denis K. Sheahan been buying or selling stock?
Recorded transactions: 1 open-market purchase ($497K) and 1 open-market sale ($14) across all tracked filings.
Where can I see all of Denis K. Sheahan'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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