Chain Bridge Bancorp (CBNA) Insider Purchase — 400 Shares at $29.81

Rhea-AI Filing Summary

Chain Bridge Bancorp, Inc. (CBNA) Form 4/A reports an insider purchase and ownership details for a company director. The filing, amended on 09/02/2025, shows a transaction dated 08/29/2025 in which the reporting person purchased 400 shares of Class A common stock at a price of $29.8098 per share. After the reported transaction the filing shows 400 Class A shares beneficially owned directly. The filing also reports 170 shares of Class B common stock beneficially owned (Class B shares are convertible into Class A shares at the holder's election).

The form identifies the reporting person as a director and was signed by Hilary Albrecht on 09/02/2025. No derivative transactions, option grants, or other material financial figures are included in this filing.

Positive

• Director purchased 400 Class A shares at $29.8098, a clear insider purchase disclosed on Form 4/A
• Disclosure includes convertible Class B holdings (170 shares), with conversion rights explicitly noted

Negative

• None.

Insights

Securities Analyst

TL;DR: Director purchased 400 Class A shares at $29.8098; ownership includes 170 convertible Class B shares.

The transaction is a straightforward open-market purchase (reported with code P) of 400 Class A shares at $29.8098 on 08/29/2025, with the reporting person listed as a director. The filing was amended and signed on 09/02/2025. The disclosure also shows 170 Class B shares held beneficially, which the filer notes are convertible to Class A at the holder's election. For investors, this is a routine Section 16 disclosure of insider activity; the size of the purchase relative to total outstanding shares is not stated, so materiality cannot be assessed from this filing alone.

Corporate Governance Expert

TL;DR: Routine insider purchase by a director; amendment and signature complete regulatory disclosure requirements.

The amended Form 4 clarifies an insider purchase and reports existing beneficial holdings including a convertible Class B block. The filing meets Section 16 disclosure norms by identifying relationship (director), transaction details (date, amount, price), and conversion rights for Class B shares. The filing does not disclose any executive changes, option exercises, or compensatory awards. Impact appears procedural and informational rather than material to company operations.

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)
09/02/2025

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	400	D
Class B Common Stock								170(1)	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:

1. Each share of Class B common stock is convertible at any time into one share of Class A common stock at the election of the holder.

	/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 insider transaction did Chain Bridge Bancorp (CBNA) report on this Form 4/A?

The filing reports a purchase of 400 Class A common shares on 08/29/2025 at a price of $29.8098 per share.

Who is the reporting person in the CBNA Form 4/A?

The reporting person is listed as a director named Basha Leigh-Alexandra; the form is signed by Hilary Albrecht on 09/02/2025.

How many shares does the reporting person beneficially own after the transaction?

The filing shows 400 Class A shares beneficially owned directly following the reported transaction and 170 Class B shares beneficially owned (convertible to Class A).

Are the Class B shares convertible to Class A in this filing?

Yes. The filing states that each share of Class B common stock is convertible at any time into one share of Class A common stock at the holder's election.

Was this Form 4 a new filing or an amendment?

This is an amended Form 4 (4/A); the amendment date shown is 09/02/2025 and the earliest transaction date is 08/29/2025.