Summary
Updated Aug 31, 2026
John J. Brough is Chief Executive Officer of CHAIN BRIDGE BANCORP INC (CBNA). 1 SEC Form 4 filing on record, dated 7 October 2024. Most recent open-market trade: bought $28K of CBNA on 7 October 2024. Lifetime open-market purchases: $28K.
Recent Transactions
1Every recent SEC Form 4 transaction John J. Brough has reported, most recent first.
Trading Pattern
InsiderAlpha's records for John J. Brough go back to 2024: 1 primary Form 4 filing, an average of 0.3 per year. The typical open-market purchase is $28K (1 buy totaling $28K). The largest single buy on record is $28K of CBNA in 2024. 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 John J. Brough 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.
- Benita Thompson-Byas - $71K of CBNA open-market activity in the last 12 months
- Leigh-Alexandra Basha - $50K of CBNA open-market activity in the last 12 months
- James R. Pollock - $25K of CBNA open-market activity in the last 12 months
- Mark Martinelli - $18K of CBNA 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 John J. Brough?
John J. Brough is a corporate insider, tracked as Chief Executive Officer of CHAIN BRIDGE BANCORP INC (CBNA). InsiderAlpha holds 1 primary Form 4 filing for them, the earliest from 2024, updated as new SEC EDGAR filings are processed.
When did John J. Brough last file a Form 4?
The only primary Form 4 on record is dated 7 October 2024.
Has John J. Brough been buying or selling stock?
Recorded transactions: 1 open-market purchase ($28K) and 0 open-market sales across all tracked filings.
Where can I see all of John J. Brough'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.
Learn More
Follow John J. Brough and every insider like them
A free account opens the full scored daily plan and every past day, a watchlist for any ticker, and 3 months of price history on every company page. No card.
Free plan available · Paid plans start with a 7-day free trial