Insiders who reported open-market trades in the last 12 months at the companies Mark Martinelli 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.
Mark Martinelli is a corporate insider, tracked as Director of CHAIN BRIDGE BANCORP INC (CBNA). InsiderAlpha holds 4 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 Mark Martinelli submitted recently?
1 primary Form 4 filing in the last 90 days, covering 1 company.
Has Mark Martinelli been buying or selling stock?
Recorded transactions: 2 open-market purchases ($62K) and 0 open-market sales across all tracked filings.
Mark Martinelli is Director of CHAIN BRIDGE BANCORP INC (CBNA). 4 SEC Form 4 filings on record going back to 2024, most recently on 31 July 2026. Most recent open-market trade: bought $18K of CBNA on 31 July 2026. Lifetime open-market purchases: $62K.
Recent transactions
4
The latest 4 SEC Form 4 transactions reported by Mark Martinelli.
InsiderAlpha's records for Mark Martinelli go back to 2024: 4 primary Form 4 filings, an average of 1.3 per year. The typical open-market purchase is $31K (2 buys totaling $62K). The largest single buy on record is $44K of CBNA in 2024. No recorded transaction carries a Rule 10b5-1 plan flag. An absent flag does not establish whether a transaction was pre-arranged or discretionary.