Hamilton officer may sell 28,500 shares of stock

Rhea-AI Filing Summary

Hamilton Insurance Group, Ltd. (HG) has an officer, Timothy James Duffin, filing a Rule 144 notice to sell up to 28,500 shares of common stock through Morgan Stanley Smith Barney LLC, reflecting an aggregate market value of $988,582.35 at a price of $65.890659 per share on the NYSE as of September 11, 2026.

The shares relate to restricted stock vesting under registered plans, including 24,732 shares vested on January 1, 2023 and 3,768 shares vested on January 1, 2026. The filing also reports that Duffin sold 28,500 common shares on September 10, 2026 for total proceeds of $984,181.95.

Key Figures

Shares covered by Form 144: 28,500 shares Aggregate market value: $988,582.35 Indicated price per share: $65.890659 per share +4 more

7 metrics

Shares covered by Form 144 28,500 shares Common stock position listed with broker for potential sale

Aggregate market value $988,582.35 Value of 28,500 shares at indicated NYSE price on September 11, 2026

Indicated price per share $65.890659 per share Price used to calculate aggregate market value for the Form 144 position

Restricted stock vesting 2023 24,732 shares Restricted stock vesting under a registered plan on January 1, 2023

Restricted stock vesting 2026 3,768 shares Restricted stock vesting under a registered plan on January 1, 2026

Recent shares sold 28,500 shares Common shares sold on September 10, 2026

Proceeds from recent sale $984,181.95 Total proceeds from 28,500 HG shares sold on September 10, 2026

Key Terms

Rule 144, restricted stock, registered plan, aggregate market value

4 terms

Rule 144 regulatory

"See the definition of "person" in paragraph (a) of Rule 144."

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

restricted stock financial

"Restricted Stock Vesting Under a Registered Plan"

Shares granted to an individual that carry limits on transfer or sale until certain conditions are met, such as staying with the company for a set time or hitting performance targets. Think of them as a locked gift that gradually opens; for investors they matter because they affect how many shares may enter the market later, signal management incentives and potential dilution, and reveal confidence in future company performance.

registered plan financial

"Restricted Stock Vesting Under a Registered Plan"

A registered plan is a savings or investment account that a government recognizes for special tax treatment and rules, such as limits on how much you can put in and conditions for withdrawals. For investors it matters because those rules change how much of your gains are taxed, how quickly your money can be accessed and what strategies make sense — like a labeled jar that gives tax breaks but comes with rules about when and how you can take the money out.

aggregate market value financial

"28500 | 988582.35 | 65890659"

Aggregate market value is the combined price you would pay to buy all outstanding shares of a company or all companies in a group at current market prices — essentially the sum of each stock’s market capitalization. It matters to investors because it shows the overall size and weight of an investment or sector (like the total cost to buy every piece of a puzzle), helps compare scale across companies or markets, and influences index composition and risk exposure.

FAQ

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

What does the Form 144 filing for HG disclose about planned share sales?

The Form 144 states that officer Timothy James Duffin may sell up to 28,500 shares of Hamilton Insurance Group, Ltd. common stock, with an indicated aggregate market value of $988,582.35 at $65.890659 per share as of September 11, 2026.

Who is selling Hamilton Insurance Group (HG) shares under this Form 144?

The potential sales are for the account of Timothy James Duffin, identified as an officer of Hamilton Insurance Group, Ltd., with Morgan Stanley Smith Barney LLC Executive Financial Services listed as the broker handling the 28,500-share position.

What is the source of the HG shares covered by this Form 144?

The shares arise from restricted stock vesting under registered plans, including 24,732 shares that vested on January 1, 2023 and 3,768 shares that vested on January 1, 2026, all issued by Hamilton Insurance Group, Ltd.

At what price and value are the HG shares in the Form 144 estimated?

The notice ties the 28,500 shares of HG common stock to an aggregate market value of $988,582.35, based on a per-share price of $65.890659 on the NYSE as of September 11, 2026.

What HG share sales has Timothy James Duffin made in the past three months?

The filing reports that Timothy James Duffin sold 28,500 shares of Hamilton Insurance Group, Ltd. common stock on September 10, 2026, for total proceeds of $984,181.95 during the prior three months.

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

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Available on EDGAR 09/11/2026 - 04:08 PM EDT Accepted by SEC EDGAR 09/11/2026 - 04:07 PM EDT Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0002094343
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	HAMILTON INSURANCE GROUP, LTD.
SEC File Number	001-41862
Address of Issuer	WELLESLEY HOUSE NORTH, 1ST FLOOR 90 PITTS BAY ROAD PEMBROKE BERMUDA HM08
Phone	(441) 405-5200
Name of Person for Whose Account the Securities are To Be Sold	TIMOTHY JAMES DUFFIN
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Officer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	28500	988582.35	65890659	09/11/2026	NYSE

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	01/01/2023	Restricted Stock Vesting Under a Registered Plan	Issuer			24732	01/01/2023	Not Applicable
Common	01/01/2026	Restricted Stock Vesting Under a Registered Plan	Issuer			3768	01/01/2026	Not Applicable

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
TIMOTHY JAMES DUFFIN Wellesley House North, 1st Floor 90 Pitts Bay Road Pembroke D0 HM 08	Common	09/10/2026	28500	984181.95

144: Remarks and Signature

Remarks
Date of Notice	09/11/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ Timothy James Duffin
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)