Summary
Updated Aug 31, 2026
R. David Rosato is Chief Financial Officer of Eastern Bankshares, Inc. (EBC). 5 SEC Form 4 filings on record going back to 2025, most recently on 9 March 2026. Most recent open-market trade: bought $92K of EBC on 9 March 2026. Lifetime open-market purchases: $528K. Historical track record: 4/5 stars across 4 tracked purchases.
Recent Transactions
8Every recent SEC Form 4 transaction R. David Rosato has reported, most recent first.
Track Record
InsiderAlpha computes a forward-return-based score for every insider with enough Form 4 purchase history. The metrics below reflect realized performance after each tracked open-market purchase.
| Metric | Value |
|---|---|
| InsiderAlpha rating | ★★★★☆ (4/5) |
| Total purchases tracked | 4 |
| Purchases with forward-return data | 4 |
| 30-day win rate | 100% |
| 90-day win rate | 75% |
| Avg 5-day return | +0.69% |
| Avg 30-day return | +7.68% |
| Avg 90-day return | +10.83% |
| Best 30-day return | +12.55% |
Trading Pattern
InsiderAlpha's records for R. David Rosato go back to 2025: 5 primary Form 4 filings, an average of 2.5 per year. The typical open-market purchase is $132K (4 buys totaling $528K). The largest single buy on record is $171K of EBC in 2025. 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 R. David Rosato 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
- 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
- Denis K. Sheahan - $14 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 R. David Rosato?
R. David Rosato is a corporate insider, tracked as Chief Financial Officer of Eastern Bankshares, Inc. (EBC). InsiderAlpha holds 5 primary Form 4 filings for them, the earliest from 2025, updated as new SEC EDGAR filings are processed.
When did R. David Rosato last file a Form 4?
The most recent primary Form 4 on record is dated 9 March 2026, one of 5 filings going back to 2025.
Has R. David Rosato been buying or selling stock?
Recorded transactions: 4 open-market purchases ($528K) and 0 open-market sales across all tracked filings.
How accurate is R. David Rosato's historical track record?
Across 4 tracked purchases, R. David Rosato averaged +7.7% avg 30-day return with a 100% 30-day win rate. InsiderAlpha rates the track record at 4/5 stars.
Where can I see all of R. David Rosato'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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