Hamilton Insurance CUO sells 57,000 shares

Rhea-AI Filing Summary

Hamilton Insurance Group, Ltd. (HG) reports that its Chief Underwriting Officer, Timothy James Duffin, sold a total of 57,000 Class B Common Shares in two open market or private transactions on September 10 and 11, 2026, at weighted average prices of $34.5327 and $34.6871 per share, respectively. The reported prices reflect weighted averages for multiple trades within ranges of $34.50–$34.565 and $34.47–$35.33, and the filing notes that current holdings include restricted stock units. No Rule 10b5-1 trading plan is indicated.

Insider Trade Summary

Net Seller: 57,000 shares

Net Sell 2 txns

Insider Duffin Timothy James

Role Chief Underwriting Officer

Sold 57,000 shs ($1.97M)

Type	Security	Shares	Price	Value
Sale	Class B Common Shares F3, F2	28,500	$34.6871	$989K
Sale	Class B Common Shares F1, F2	28,500	$34.5327	$984K

Holdings After Transaction: Class B Common Shares — 194,959 shares (Direct)

Footnotes (3)

1. F1. The price reported in Column 4 represents a weighted average price. These Class B common shares were sold in multiple transactions at prices ranging from $34.50 to $34.565, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.
2. F2. Includes restricted stock units.
3. F3. The price reported in Column 4 represents a weighted average price. These Class B common shares were sold in multiple transactions at prices ranging from $34.47 to $35.33, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

Key Figures

Shares sold September 10, 2026: 28,500 shares Weighted average price September 10, 2026: $34.5327 per share Shares sold September 11, 2026: 28,500 shares +2 more

5 metrics

Shares sold September 10, 2026 28,500 shares Class B Common Shares sold by Chief Underwriting Officer

Weighted average price September 10, 2026 $34.5327 per share Within a range of $34.50 to $34.565

Shares sold September 11, 2026 28,500 shares Class B Common Shares sold by Chief Underwriting Officer

Weighted average price September 11, 2026 $34.6871 per share Within a range of $34.47 to $35.33

Total shares sold 57,000 shares Net shares sold across both reported transactions

Key Terms

weighted average price, restricted stock units, Rule 10b5-1, Class B Common Shares

4 terms

weighted average price financial

"The price reported in Column 4 represents a weighted average price."

Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.

restricted stock units financial

"Includes restricted stock units."

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

Rule 10b5-1 regulatory

"The filing’s Rule 10b5-1 checkbox is 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.

Class B Common Shares financial

"These Class B common shares were sold in multiple transactions"

Class B common shares are one of multiple types of a company’s ordinary stock that usually differ from other classes in voting power, dividend priority, or transferability. For investors, the difference matters because owning Class B may mean less control over corporate decisions or different income potential compared with other share classes—like having a seat with fewer votes at a board meeting while still sharing in the company’s profits.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transactions did Hamilton Insurance Group (HG) report in this Form 4?

The filing reports that Chief Underwriting Officer Timothy James Duffin sold a total of 57,000 Class B Common Shares on September 10 and 11, 2026 in open market or private transactions at weighted average prices in the mid-$34 range.

How many Hamilton Insurance Group (HG) shares were sold on each date?

On September 10, 2026, 28,500 Class B Common Shares were sold. On September 11, 2026, another 28,500 Class B Common Shares were sold, for a combined total of 57,000 shares reported in this Form 4.

What prices did the HG insider receive for the Class B Common Shares sold?

The reported prices are weighted average prices. On September 10, 2026 the weighted average was $34.5327 per share within a $34.50–$34.565 range. On September 11, 2026 the weighted average was $34.6871 per share within a $34.47–$35.33 range.

Were the Hamilton Insurance Group (HG) insider sales made under a Rule 10b5-1 trading plan?

No. The Form 4 indicates that the Rule 10b5-1 checkbox is not marked, and the footnotes do not reference any trading plan, so the reported 57,000-share sale sequence is not affirmed as being under a Rule 10b5-1 plan.

What type of security did the HG insider sell in this Form 4?

The transactions involve Class B Common Shares of Hamilton Insurance Group, Ltd. The filing also notes in a footnote that the insider’s reported position includes restricted stock units, indicating that some holdings are in the form of equity awards.

Does the Form 4 disclose the insider’s remaining HG shareholdings after these sales?

No specific post-transaction share balance is provided for these transactions; the relevant field is left blank. A footnote states that the reported holdings include restricted stock units, but the exact remaining share count is not detailed in this Form 4.

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

Form 4 Insider Transactions: What Each Field Means →

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Available on EDGAR 09/14/2026 - 05:40 PM Accepted by SEC EDGAR 09/14/2026 - 05:39 PM 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^*

Duffin Timothy James

(Last) (First) (Middle)

C/O HAMILTON INSURANCE GROUP, LTD.

WELLESLEY HOUSE NORTH, 90 PITTS BAY ROAD

(Street)

PEMBROKE HM08

(City) (State) (Zip)

BERMUDA

(Country)

2. Issuer Name and Ticker or Trading Symbol
Hamilton Insurance Group, Ltd. [ HG ]

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

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/10/2026

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
Class B Common Shares	09/10/2026		S		28,500	D	$34.5327(1)	223,459(2)	D
Class B Common Shares	09/11/2026		S		28,500	D	$34.6871(3)	194,959(2)	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. The price reported in Column 4 represents a weighted average price. These Class B common shares were sold in multiple transactions at prices ranging from $34.50 to $34.565, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

2. Includes restricted stock units.

3. The price reported in Column 4 represents a weighted average price. These Class B common shares were sold in multiple transactions at prices ranging from $34.47 to $35.33, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

Remarks:

	/s/ Ryan Minetti, Attorney-in-Fact	09/14/2026
	** 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)