What SEC filings does Chain Bridge Bancorp, Inc. submit to the SEC?

Chain Bridge Bancorp, Inc. (CBNA) submits several types of SEC filings including Form 4 (insider transactions), Form 144 (proposed insider sales), 8-K reports (material events such as earnings releases, acquisitions, leadership changes), and periodic reports — the 10-Q (quarterly) and 10-K (annual). All filings are publicly available through SEC EDGAR.

What does a Form 4 filing tell me about CBNA?

A Form 4 for CBNA discloses a transaction by a company insider — typically a director, officer, or 10%+ shareholder. It shows the source-reported date, number of shares, price, and updated ownership. These facts do not establish motive or predict future returns.

How do I interpret an 8-K filing from Chain Bridge Bancorp, Inc.?

An 8-K signals a material event requiring prompt disclosure. Common triggers include earnings pre-announcements, acquisitions, leadership appointments or departures, credit changes, or regulatory actions. Read the item codes inside the filing to understand exactly what was disclosed before drawing conclusions.

What is the difference between a 10-K and 10-Q for CBNA?

The 10-K is Chain Bridge Bancorp, Inc.'s annual report with fully audited financial statements, comprehensive MD&A, and complete risk factor disclosures — filed 60–90 days after fiscal year-end. The 10-Q is a lighter quarterly report with unaudited financials filed for the first three quarters. Together they provide a continuous financial picture of the company.

Where can I see all CBNA SEC filings directly on EDGAR?

You can view all historical Chain Bridge Bancorp, Inc. filings on the SEC EDGAR company page for CBNA. Each filing card on this page links directly to the original SEC document.

How often does Chain Bridge Bancorp, Inc. file with the SEC?

Chain Bridge Bancorp, Inc. files one 10-K per year and up to three 10-Qs per year. Form 4 insider transactions must be reported within two business days of each trade, so the frequency depends on how often insiders are buying or selling CBNA shares. 8-K filings occur whenever a material event happens — which can be several times per quarter for an active company.

CBNA SEC Filing News — Chain Bridge Bancorp, Inc.

Latest SEC filings for Chain Bridge Bancorp, Inc. (CBNA) explained in plain English. Covers insider buying and selling (Form 4), proposed insider sales (Form 144), material company events (8-K), and quarterly & annual reports (10-Q / 10-K). StrongBuyAnalytics provides navigation and brief excerpts or summaries; original filings remain at the SEC/source links and were authored by their filers, not StrongBuyAnalytics. Filing dates shown are source dates. Coverage and detection can be delayed or incomplete because of SEC availability, amendments, parsing, caching, or outages. Latest source filing date shown: 2026-08-31.

Chain Bridge Bancorp, Inc. operates as a bank holding company for Chain Bridge Bank, N.A. that provides a range of commercial and personal banking services in the United States. The company offers deposits, treasury management, payments, loans, commercial lending, residential mortgage financing, consumer loans, trust and estate administration, wealth management, noninterest and interest-bearing checking, money market accounts, residential loans, and asset custody. It also provides other account …

Sector: Financial Services Industry: Banks - Regional Market Cap: $319.7M

Total Filings

Bullish Classifications

Bearish Classifications

Insider Transactions

Material Events (8-K)

Periodic Reports

Rule-based classifications for CBNA currently lean bullish. Of the 20 displayed SEC filing records, 4 carry bullish classifications versus 1 bearish classifications. These labels summarize filing attributes; they are not recommendations, probabilities, or evidence of future price direction. There were 7 insider transactions (Form 4) in this period.

CBNA Filing Activity Snapshot 2025-12-10 — 2026-08-31

Insider Transactions (Form 4)

4 buys vs 1 sell

Net insider buying in this period — more purchases than sales reported.

Largest Form 144 Filing

$70.9K

Thompson-Byas Benita (Director) · 2026-03-04

2,000 shares · Form 4

Form 144 Notices

Proposed insider sale filed — Form 144 is a notice of intent, not a confirmed transaction. Actual sales are confirmed via Form 4.

Insider Transactions 7 · Forms 3, 4 and 5

A Form 4 is filed within two business days of a company insider — an officer, a director, or a holder of more than ten percent of the stock — changing their position in the shares. All 7 filings in this group are Form 4s for Chain Bridge Bancorp, Inc.

The difficulty with reading these filings as a group is that a single form type covers transactions that mean entirely different things. An executive spending their own money to buy stock and an executive having shares withheld to pay tax on a vesting grant both appear as a Form 4. Every filing below is therefore tagged with the nature of the underlying transaction, taken from the transaction code reported on the form itself.

Across the 7 insider filings shown, the breakdown is 4 open-market purchase, 1 derivative conversion, 1 gift and 1 open-market sale. 5 of them involved a discretionary open-market trade; the rest are compensation and administrative mechanics.

What each transaction type means

Open-market purchase ×4: The insider bought shares on the open market with their own money. This is the only Form 4 category that requires a discretionary cash outlay at the prevailing price.
Derivative conversion ×1: A derivative security was converted into common stock under terms agreed earlier.
Gift ×1: Shares were transferred as a gift, typically for estate or charitable planning. No sale into the market took place.
Open-market sale ×1: The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.

Form 4 Gift Tax / Compensation Filing 2026-08-28

CBNA insider Form 4 filed for equity award, exercise, or tax withholding

Evinger David M. (Director, President, Chief Risk Officer) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Shares were transferred as a gift, typically for estate or charitable planning. No sale into the market took place.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`G`	Gift derivative · Class B Common Stock	340	—	—
`G`	Gift derivative · Class B Common Stock	340	—	—

Filing: Form 4 (Insider Transaction) Insider: Evinger David M. (Director, President, Chief Risk Officer)

View on SEC EDGAR → Open Filing Document →

Form 4 Open-market purchase Insider Buying 2026-07-31

CBNA insider MARTINELLI MARK (Director) bought 400 shares (~$17.6K)

MARTINELLI MARK, listed as Director at CHAIN BRIDGE BANCORP INC, reported an open-market purchase of 400 CBNA shares in a Form 4 filing. Insider buying is often treated as a bullish signal because company insiders are committing their own capital.

The insider bought shares on the open market with their own money. This is the only Form 4 category that requires a discretionary cash outlay at the prevailing price.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`P`	Open-market purchase	400	$44.00	$17.6K

Filing: Form 4 (Insider Transaction) Insider: MARTINELLI MARK (Director) Shares: 400 Est. Value: $17.6K

View on SEC EDGAR → Open Filing Document →

Form 4 Open-market purchase Insider Buying 2026-03-10

CBNA insider Basha Leigh-Alexandra (Director) bought 400 shares (~$14.0K)

Basha Leigh-Alexandra, listed as Director at CHAIN BRIDGE BANCORP INC, reported an open-market purchase of 400 CBNA shares in a Form 4 filing. Insider buying is often treated as a bullish signal because company insiders are committing their own capital.

The insider bought shares on the open market with their own money. This is the only Form 4 category that requires a discretionary cash outlay at the prevailing price.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`P`	Open-market purchase	400	$35.04	$14.0K

Filing: Form 4 (Insider Transaction) Insider: Basha Leigh-Alexandra (Director) Shares: 400 Est. Value: $14.0K

View on SEC EDGAR → Open Filing Document →

Form 4 Open-market purchase Insider Buying 2026-03-06

CBNA insider Pollock James R. (Corporate Development Officer) bought 714 shares (~$25.2K)

Pollock James R., listed as Corporate Development Officer at CHAIN BRIDGE BANCORP INC, reported an open-market purchase of 714 CBNA shares in a Form 4 filing. Insider buying is often treated as a bullish signal because company insiders are committing their own capital.

The insider bought shares on the open market with their own money. This is the only Form 4 category that requires a discretionary cash outlay at the prevailing price.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`P`	Open-market purchase	714	$35.25	$25.2K

Filing: Form 4 (Insider Transaction) Insider: Pollock James R. (Corporate Development Officer) Shares: 714 Est. Value: $25.2K

View on SEC EDGAR → Open Filing Document →

Form 4 Open-market purchase Insider Buying 2026-03-06

CBNA insider Basha Leigh-Alexandra (Director) bought 800 shares (~$24.2K)

Basha Leigh-Alexandra, listed as Director at CHAIN BRIDGE BANCORP INC, reported an open-market purchase of 800 CBNA shares in a Form 4 filing. Insider buying is often treated as a bullish signal because company insiders are committing their own capital.

The insider bought shares on the open market with their own money. This is the only Form 4 category that requires a discretionary cash outlay at the prevailing price.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`P`	Open-market purchase	400	$29.97	$12.0K
`P`	Open-market purchase	400	$30.48	$12.2K

Filing: Form 4 (Insider Transaction) Insider: Basha Leigh-Alexandra (Director) Shares: 800 Est. Value: $24.2K

View on SEC EDGAR → Open Filing Document →

Form 4 Open-market sale Insider Selling 2026-03-04

CBNA insider Thompson-Byas Benita (Director) sold 2,000 shares (~$70.9K)

Thompson-Byas Benita, listed as Director at CHAIN BRIDGE BANCORP INC, reported an open-market sale of 2,000 CBNA shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`S`	Open-market sale	2,000	$35.44	$70.9K

Filing: Form 4 (Insider Transaction) Insider: Thompson-Byas Benita (Director) Shares: 2,000 Est. Value: $70.9K

View on SEC EDGAR → Open Filing Document →

Form 4 Derivative conversion Tax / Compensation Filing 2025-12-15

CBNA insider Form 4 filed for equity award, exercise, or tax withholding

Thompson-Byas Benita (Director) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

A derivative security was converted into common stock under terms agreed earlier.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`C`	Derivative conversion	18,020	$36.46	$657.0K

Filing: Form 4 (Insider Transaction) Insider: Thompson-Byas Benita (Director) Shares: 18,020

View on SEC EDGAR → Open Filing Document →

Proposed Insider Sales 1 · Form 144

A Form 144 is a notice of intent to sell restricted or control securities. It is not a record that anything was sold. Chain Bridge Bancorp, Inc. has 1 such notice in this period.

The distinction matters because a Form 144 is frequently reported as though it were a completed insider sale. The filer may sell all of the shares covered, some of them, or none at all, and there is no obligation to update the notice either way. A sale that is actually executed by an officer or director shows up separately on a Form 4, which is the filing to check before treating a proposed sale as a real one.

Form 144 Proposed Insider Sale 2026-03-03

CBNA Form 144 filed for proposed insider sale by Thompson-Byas Benita (2,000 shares) ~$70.4K

Thompson-Byas Benita filed a Form 144 with the SEC indicating intent to sell CBNA (CHAIN BRIDGE BANCORP INC) shares. Form 144 reflects a proposed sale, not a completed transaction. The actual execution, if any, would typically appear later in a Form 4.

Filing: Form 144 (Proposed Sale Notice) Insider: Thompson-Byas Benita Shares: 2,000 Est. Value: $70.4K

View on SEC EDGAR → Open Filing Document →

Material Events 9 · Form 8-K

An 8-K reports a material event in the window between scheduled reports. There are 9 in this period for Chain Bridge Bancorp, Inc. Each 8-K names the item number it is filed under, and that number is the fastest way to tell a routine disclosure from a consequential one.

Item 2.02 is an earnings release, Item 5.02 is a change of directors or officers, and Item 1.01 or 2.01 covers a material agreement or a completed acquisition. Item 7.01 and Item 8.01 are the general-purpose disclosure items and carry no fixed meaning on their own.

Form 8-K Material Company Update 2026-08-31

CBNA filed 8-K — material company event

CHAIN BRIDGE BANCORP INC filed an 8-K with the SEC reporting a material event. Summary unavailable — view the original SEC filing for the full text.

Filing: 8-K (Material Event)

View on SEC EDGAR → Open Filing Document →

Form 8-K Material Company Update 2026-07-28

CBNA filed 8-K — material company event

CHAIN BRIDGE BANCORP INC filed an 8-K with the SEC reporting a material event. Summary unavailable — view the original SEC filing for the full text.

Filing: 8-K (Material Event)

View on SEC EDGAR → Open Filing Document →

Form 8-K Material Company Update 2026-07-20

CBNA filed 8-K — material company event

CHAIN BRIDGE BANCORP INC filed an 8-K with the SEC reporting a material event. Summary unavailable — view the original SEC filing for the full text.

Filing: 8-K (Material Event)

View on SEC EDGAR → Open Filing Document →

Form 8-K Material Company Update 2026-06-18

CBNA filed 8-K — material company event

CHAIN BRIDGE BANCORP INC filed an 8-K with the SEC reporting a material event. Summary unavailable — view the original SEC filing for the full text.

Filing: 8-K (Material Event)

View on SEC EDGAR → Open Filing Document →

Form 8-K Material Company Update 2026-04-28

CBNA filed 8-K — material company event

CHAIN BRIDGE BANCORP INC filed an 8-K with the SEC reporting a material event. Summary unavailable — view the original SEC filing for the full text.

Filing: 8-K (Material Event)

View on SEC EDGAR → Open Filing Document →

Form 8-K Material Company Update 2026-01-28

CBNA filed 8-K — material company event

CHAIN BRIDGE BANCORP INC filed an 8-K with the SEC reporting a material event. Summary unavailable — view the original SEC filing for the full text.

Filing: 8-K (Material Event)

View on SEC EDGAR → Open Filing Document →

Form 8-K/A Amended Material Company Update 2026-01-23

CBNA filed amended 8-K — material company event

CHAIN BRIDGE BANCORP INC filed an amended 8-K with the SEC reporting a material event. Summary unavailable — view the original SEC filing for the full text.

Filing: 8-K/A (Material Event Amendment)

View on SEC EDGAR → Open Filing Document →

Form 8-K Material Company Update 2025-12-31

CBNA filed 8-K — material company event

CHAIN BRIDGE BANCORP INC filed an 8-K with the SEC reporting a material event. Summary unavailable — view the original SEC filing for the full text.

Filing: 8-K (Material Event)

View on SEC EDGAR → Open Filing Document →

Form 8-K Material Company Update 2025-12-10

CBNA filed 8-K — material company event

CHAIN BRIDGE BANCORP INC filed an 8-K with the SEC reporting a material event. Summary unavailable — view the original SEC filing for the full text.

Filing: 8-K (Material Event)

View on SEC EDGAR → Open Filing Document →

Periodic Reports 3 · Forms 10-K and 10-Q

The periodic reports are where the audited and reviewed financial statements live. This period contains 1 annual report (10-K) and 2 quarterly reports (10-Q) for Chain Bridge Bancorp, Inc.

The two are not equivalent in weight. A 10-K is audited by an external firm and includes the full risk factor disclosure, business description and management discussion; a 10-Q is unaudited, reviewed rather than examined, and much shorter. When a figure in a quarterly report is later revised, the annual report is usually where the correction appears.

An amended report — 10-K/A or 10-Q/A — restates or corrects something in the original filing, and is worth reading against the version it replaces.

Form 10-Q Quarterly Report 2026-08-11

CBNA filed Quarterly Report (10-Q)

CHAIN BRIDGE BANCORP INC filed its quarterly report with the SEC. This report includes unaudited financial statements and management discussion for the quarter.

Filing: 10-Q (Quarterly Report)

View on SEC EDGAR → Open Filing Document →

Form 10-Q Quarterly Report 2026-05-12

CBNA filed Quarterly Report (10-Q)

CHAIN BRIDGE BANCORP INC filed its quarterly report with the SEC. This report includes unaudited financial statements and management discussion for the quarter.

Filing: 10-Q (Quarterly Report)

View on SEC EDGAR → Open Filing Document →

Form 10-K Annual Report 2026-03-20

CBNA filed Annual Report (10-K)

CHAIN BRIDGE BANCORP INC filed its annual report with the SEC. This report includes audited financial statements, business overview, risk factors, and management discussion.

Filing: 10-K (Annual Report)

View on SEC EDGAR → Open Filing Document →

How we classify Chain Bridge Bancorp, Inc.'s filings

Straight from EDGAR

Each displayed record links to an original source document. StrongBuyAnalytics provides navigation and brief excerpts or summaries, not the filing itself. Parsing may omit context or contain errors, so read the original document in full.

Transaction codes, not guesswork

The nature shown on each insider filing comes from the transaction code the filer entered on the form itself — P for an open-market purchase, A for a compensation award, F for shares withheld to pay tax, M for an option exercise. Where one filing contains several codes, the transaction table lists them line by line.

Why the distinction matters

Insider activity is routinely summarised as buying or selling, which flattens together decisions that mean very different things. Shares withheld for tax on a vesting grant are an automatic administrative step; shares bought on the open market are someone committing their own money at the current price.

What this page does not tell you

A filing records what happened, not why. Form 4 does not always disclose whether a sale was executed under a pre-arranged Rule 10b5-1 plan, and no single filing is a basis for a decision on CBNA. Read these alongside the fundamentals rather than in isolation.

Frequently Asked Questions — CBNA SEC Filings

More Tools for CBNA

CBNA Full Stock Analysis CBNA Live Chart Institutional Ownership Earnings Calendar Options Flow Scanner Semiconductor Demand Zone Tracker Sector Scanner Browse All Stocks

Want deeper CBNA analysis?

View valuation, growth metrics, the rule-based stock-page score, demand zones, peer comparison, and more — all on the CBNA stock analysis page.

CBNA Full Analysis

Publisher, sources & limitations — September 15, 2026. StrongBuyAnalytics provides navigation and brief excerpts or summaries for educational use. Original filings remain at SEC EDGAR or other displayed source links; StrongBuyAnalytics does not author them. Filing dates are source dates, not publication dates for this page. Coverage can be delayed, incomplete, amended, or unavailable because of SEC/source availability, parsing, caching, or outages. Verify every material statement in the original filing.

Data Sources · Methodology · AI Disclosure · Corrections Policy · Disclaimer