Mark Martinelli - SEC Form 4 Insider Trading Activity
Summary
Updated Aug 3, 2026
Mark Martinelli has filed 1 SEC Form 4 filing across 1 company in the last 90 days - buying. Lifetime open-market purchases: $62K.
Profile
Mark Martinelli is Director at CHAIN BRIDGE BANCORP INC (CBNA). Martinelli has reported 3 insider filings with the SEC since 2024. The most recent filing was in November 2025.
| Role | Director |
|---|---|
| Notability | 26/100 |
Board memberships
- CHAIN BRIDGE BANCORP INC
Reported roles
- Director
Trading Pattern
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 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.
Career & Filing History
Every role Mark Martinelli has reported on a Form 4, reconstructed from the filings themselves - reporting insiders must state their relationship to the issuer (officer title, director seat, or 10% ownership) on every filing.
- Director at CHAIN BRIDGE BANCORP INC (CBNA) - 3 filings, 2025 to 2026
- Insider at CHAIN BRIDGE BANCORP INC (CBNA) - 1 filing, 2024
Recent Transactions
| Date | Ticker | Company | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-07-31 | CBNA | CHAIN BRIDGE BANCORP INC | P - Open-market purchase | 400 | $44.00 | $18K |
| 2025-11-12 | CBNA | CHAIN BRIDGE BANCORP INC | A - Grant or award | 430 | $28.55 | $12K |
| 2025-11-07 | CBNA | CHAIN BRIDGE BANCORP INC | J - Other acquisition / disposition | 170 | $29.93 | $5K |
| 2024-10-07 | CBNA | CHAIN BRIDGE BANCORP INC | P - Open-market purchase | 2.0K | $22.00 | $44K |
Companies - Last 90 Days
- CHAIN BRIDGE BANCORP INC (CBNA) - 1 filing, last 2026-07-31
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades at the companies Mark Martinelli has recently filed 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
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
- Frank Martell
- Martin Product Sales LLC
- Marcelo Eduardo Martins
- Neil Mehta
- Keith A. Meister
- MetLife Investment Management, LLC
- John Micek
- Andrew J. Mills
Frequently Asked Questions
Who is Mark Martinelli?
Mark Martinelli is Director at CHAIN BRIDGE BANCORP INC (CBNA). Martinelli has reported 3 insider filings with the SEC since 2024. The most recent filing was in November 2025.…
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.
Where can I see all of Mark Martinelli'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
Open the live Mark Martinelli profile on InsiderAlpha for real-time alerts, AI-scored trade ideas, and full transaction history.