Butterfield (NYSE: NTB) COO sells 5,500 shares, keeps 43,218 stake

Rhea-AI Filing Summary

Bank of N.T. Butterfield & Son Ltd (NTB) Chief Operating Officer Michael Walter Neff reported selling 5,500 Ordinary shares on 2026-08-14 in a sale characterized as an open market or private transaction at an average price of $63.6592 per share. After this transaction, he directly holds 43,218 Ordinary shares of NTB. The Rule 10b5-1 trading plan checkbox was not marked as applicable.

Insider Trade Summary

Net Seller: 5,500 shares

Net Sell 1 txn

Insider Neff Michael Walter

Role Chief Operating Officer

Sold 5,500 shs ($350K)

Type	Security	Shares	Price	Value
Sale	Ordinary shares	5,500	$63.6592	$350K

Holdings After Transaction: Ordinary shares — 43,218 shares (Direct)

Key Figures

Shares sold: 5,500 shares Sale price per share: $63.6592 per share Shares held after transaction: 43,218 shares

3 metrics

Shares sold 5,500 shares Non-derivative sale of Ordinary shares on 2026-08-14

Sale price per share $63.6592 per share Average price for the 5,500-share sale on 2026-08-14

Shares held after transaction 43,218 shares Direct ownership of Ordinary shares following the reported sale

Key Terms

Ordinary shares, non-derivative, Rule 10b5-1

3 terms

Ordinary shares financial

"security_title: "Ordinary shares""

Ordinary shares are a type of ownership stake in a company, giving shareholders a right to participate in the company’s profits and decision-making through voting. They are similar to owning a piece of a business, and their value can rise or fall based on the company's performance. Investors buy ordinary shares to potentially earn dividends and benefit from the company's growth over time.

non-derivative financial

"transaction_type: "non-derivative""

Rule 10b5-1 regulatory

"The Rule 10b5-1 trading plan checkbox was not marked"

Rule 10b5-1 is a regulation that allows company insiders to buy or sell their shares at predetermined times, even if they have access to non-public information. It acts like setting a schedule in advance for transactions, helping prevent accusations of unfair trading. This rule provides a way for insiders to plan trades transparently, giving investors confidence that these transactions are not based on hidden information.

FAQ

What insider transaction did NTB executive Michael Walter Neff report on this Form 4?

Michael Walter Neff reported a sale of 5,500 NTB Ordinary shares on 2026-08-14. The transaction was coded as an open market or private sale at an average price of $63.6592 per share, reducing but not eliminating his direct holdings.

At what price did NTB executive Michael Walter Neff sell his shares?

He sold the 5,500 NTB Ordinary shares at an average price of $63.6592 per share. This price is reported as a per-share figure for a single transaction dated 2026-08-14 classified as a non-derivative open market or private sale.

How many NTB shares does Michael Walter Neff hold after this reported sale?

After the sale, Michael Walter Neff directly holds 43,218 NTB Ordinary shares. This figure reflects his reported direct ownership position immediately following the 5,500-share disposition on 2026-08-14 and is specific to this Form 4 filing.

Was Michael Walter Neff’s NTB share sale made under a Rule 10b5-1 trading plan?

The filing’s Rule 10b5-1 checkbox is not marked as applicable, indicating the transaction was not affirmed as being under a 10b5-1 trading plan. The sale is instead reported simply as an open market or private transaction.

What type of security did NTB’s Michael Walter Neff sell in this Form 4?

He sold Ordinary shares of Bank of N.T. Butterfield & Son Ltd. The transaction is categorized as a non-derivative sale, meaning it involved the company’s common equity directly rather than options or other derivative securities.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Form 4 Insider Transactions: What Each Field Means →

Available on EDGAR 08/17/2026 - 10:01 AM Accepted by SEC EDGAR 08/17/2026 - 10:00 AM Learn about SEC filing dates

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
Estimated average burden
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^*

Neff Michael Walter

(Last) (First) (Middle)

65 FRONT STREET

(Street)

HAMILTON HM 12

(City) (State) (Zip)

BERMUDA

(Country)

2. Issuer Name and Ticker or Trading Symbol
Bank of N.T. Butterfield & Son Ltd [ NTB ]

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

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

2a. Foreign Trading Symbol
[NTB.BH]

3. Date of Earliest Transaction (Month/Day/Year)
08/14/2026

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

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

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

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
Ordinary shares	08/14/2026		S	V	5,500	D	$63.6592	43,218	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:

Remarks:

	/s/ Tara Hidalgo, by power of attorney for Michael Neff	08/17/2026
	** 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.
* Form 4: SEC 1474 (03-26)