[Form 4] Chain Bridge Bancorp, Inc. Insider Trading Activity

Rhea-AI Filing Summary

Chain Bridge Bancorp, Inc. (CBNA) director Basha Leigh-Alexandra reported an open-market purchase of Class A common stock on 08/29/2025. The filing shows 400 shares purchased at a price of $29.8098 per share, resulting in 570 shares beneficially owned directly after the transaction. The Form 4 was signed by Hilary Albrecht on 09/02/2025. No derivative transactions are reported in this filing.

Positive

• Director purchase disclosed: 400 Class A shares were acquired on 08/29/2025 at $29.8098 per share.
• Resulting direct ownership disclosed: Beneficial ownership after the transaction is reported as 570 shares (direct).
• Form is signed: Filing includes an executed signature dated 09/02/2025.

Negative

• None.

Insights

Financial Analyst

TL;DR: A director purchased 400 Class A shares at $29.8098, increasing direct ownership to 570 shares.

This Form 4 documents a straightforward Section 16 purchase by a company director. The filing provides exact transaction details: date (08/29/2025), quantity (400 shares), price ($29.8098) and resulting direct beneficial ownership (570 shares). There are no derivative instruments or additional arrangements disclosed. For investors, the record is a clear, routine insider purchase disclosure without further financial metrics or company-wide implications in the filing.

Corporate Governance Expert

TL;DR: Director-level insider buy disclosed; filing is complete for the reported non-derivative transaction.

The document identifies the reporting person as a director and indicates the Form 4 was filed individually. The disclosure includes the signature block and date, meeting SEC Form 4 procedural requirements. No amendments, 10b5-1 plan checkboxes, or indirect ownership notes are present. The filing is a routine, compliant insider transaction report based solely on information provided.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
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hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Basha Leigh-Alexandra

(Last) (First) (Middle)

1445-A LAUGHLIN AVENUE

(Street)

MCLEAN VA 22101

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
CHAIN BRIDGE BANCORP INC [ CBNA ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
08/29/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Class A Common Stock	08/29/2025		P		400	A	$29.8098	570	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

	/s/ Hilary Albrecht	09/02/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What transaction did the reporting person execute as disclosed on the CBNA Form 4?

The reporting person purchased 400 Class A common shares on 08/29/2025 at a price of $29.8098 per share.

How many Chain Bridge Bancorp (CBNA) shares does the reporting person beneficially own after the transaction?

The filing reports 570 shares beneficially owned directly following the reported purchase.

What is the reporting person's relationship to Chain Bridge Bancorp in this Form 4?

The reporting person, Basha Leigh-Alexandra, is identified as a Director of the issuer.

Are any derivative securities or option exercises reported in this Form 4 for CBNA?

No. Table II for derivative securities contains no reported transactions; only a non-derivative purchase is recorded.

Who signed the Form 4 and when was it signed?

The Form 4 was signed by Hilary Albrecht on 09/02/2025.