Summary
Updated Aug 31, 2026
William Darcey is Director of NB Bancorp, Inc. (NBBK). 3 SEC Form 4 filings on record going back to 2025, most recently on 15 May 2026. Most recent open-market trade: bought $84K of NBBK on 12 August 2025. Lifetime open-market purchases: $86K.
Recent Transactions
3Every recent SEC Form 4 transaction William Darcey has reported, most recent first.
Trading Pattern
InsiderAlpha's records for William Darcey go back to 2025: 3 primary Form 4 filings, an average of 1.5 per year. The typical open-market purchase is $43K (2 buys totaling $86K). The largest single buy on record is $84K of NBBK 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 William Darcey 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.
- Hope Pascucci - $474K of NBBK open-market activity in the last 12 months
- Joseph P. Campanelli - $408K of NBBK open-market activity in the last 12 months
- Mary Susan Elliott - $218K of NBBK open-market activity in the last 12 months
- Kenneth C. Montgomery - $92K of NBBK open-market activity in the last 12 months
- Kevin Henkin - $46K of NBBK open-market activity in the last 12 months
- Jean-Pierre Lapointe - $25K of NBBK 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 William Darcey?
William Darcey is a corporate insider, tracked as Director of NB Bancorp, Inc. (NBBK). InsiderAlpha holds 3 primary Form 4 filings for them, the earliest from 2025, updated as new SEC EDGAR filings are processed.
When did William Darcey last file a Form 4?
The most recent primary Form 4 on record is dated 15 May 2026, one of 3 filings going back to 2025.
Has William Darcey been buying or selling stock?
Recorded transactions: 2 open-market purchases ($86K) and 0 open-market sales across all tracked filings.
Where can I see all of William Darcey'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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