Hanover Insurance officer to sell $1.4M in stock

HANOVER INSURANCE GROUP, INC.

Rhea-AI Filing Summary

HANOVER INSURANCE GROUP, INC. (THG) received a notice that officer Dennis F. Kerrigan plans to sell 6,551 shares of common stock, expected around August 19, 2026, through Fidelity Brokerage Services LLC under Rule 144. The planned sale is based on a stock option exercise for cash and is to occur on the NYSE. Over the prior three months, Kerrigan previously sold 6,262 shares of THG common stock on May 20, 2026.

Key Figures

Shares to be sold: 6,551 shares Aggregate market value of planned sale: $1,446,415.47 Shares outstanding: 34,820,221 shares +3 more

6 metrics

Shares to be sold 6,551 shares Common stock to be sold around August 19, 2026 under Rule 144

Aggregate market value of planned sale $1,446,415.47 Total market value of 6,551 THG common shares planned for sale

Shares outstanding 34,820,221 shares THG common shares outstanding as referenced in the notice

Shares sold in prior 3 months 6,262 shares THG common shares sold by Dennis F. Kerrigan on May 20, 2026

Proceeds from prior sale $1,208,503.38 Aggregate value of 6,262 THG shares sold on May 20, 2026

Planned sale date 08/19/2026 Approximate date for the planned Rule 144 sale

Key Terms

Rule 144, aggregate market value, stock option exercise, attorney-in-fact

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.

aggregate market value financial

"6551 | 1446415.47 | 34820221 | 08/19/2026 | NYSE"

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.

stock option exercise financial

"Common | 08/19/2026 | Stock Option Exercise | Issuer"

A stock option exercise is the act of using a previously granted right to buy shares of a company's stock at a specific, predetermined price by paying that price and receiving the shares. It matters to investors because exercising changes who owns the shares (which can dilute existing ownership), can trigger taxable events and shift potential gains or losses, and affects voting power and the company’s outstanding share count—like turning a voucher into an actual product that becomes part of circulating supply.

attorney-in-fact regulatory

"as attorney-in-fact for Dennis F. Kerrigan."

An attorney-in-fact is the person or entity given legal authority through a power of attorney to act on behalf of another for specific tasks, such as signing documents, voting shares, or handling transactions. For investors, this matters because it lets a trusted representative make timely decisions or complete paperwork when the owner cannot, much like handing keys to someone to run errands on your behalf—so checks on scope and limits of that authority are important.

FAQ

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

What insider sale is disclosed for HANOVER INSURANCE GROUP, INC. (THG)?

Officer Dennis F. Kerrigan plans to sell 6,551 shares of THG common stock. The sale is expected around August 19, 2026 on the NYSE and will be executed through Fidelity Brokerage Services LLC under Rule 144.

How many THG shares has Dennis F. Kerrigan sold in the last three months?

Dennis F. Kerrigan sold 6,262 shares of THG common stock on May 20, 2026. These prior sales are reported because Rule 144 requires aggregation of recent sales when disclosing a new planned sale.

What is the aggregate market value of the THG shares planned for sale?

The aggregate market value of the 6,551 shares of THG common stock planned for sale is reported as $1,446,415.47. This figure reflects the total market value of the shares covered by the planned Rule 144 transaction.

How many HANOVER INSURANCE GROUP, INC. (THG) shares are outstanding in this notice?

The notice reports that 34,820,221 shares of THG common stock are outstanding. This outstanding share count provides context for evaluating the size of the planned 6,551-share sale relative to the total shares.

What is the nature of the THG shares being sold by Dennis F. Kerrigan?

The 6,551 shares to be sold arise from a stock option exercise for cash with the issuer. After exercising options on August 19, 2026, the resulting shares are expected to be sold on the NYSE through Fidelity.

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

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Accepted by SEC EDGAR 08/19/2026 - 04:16 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	0001799888
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	HANOVER INSURANCE GROUP, INC.
SEC File Number	001-13754
Address of Issuer	440 LINCOLN ST WORCESTER MASSACHUSETTS 01653
Phone	5088551000
Name of Person for Whose Account the Securities are To Be Sold	Kerrigan Dennis Francis
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	Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI 02917	6551	1446415.47	34820221	08/19/2026	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	08/19/2026	Stock Option Exercise	Issuer			6551	08/19/2026	Cash

* 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
Dennis F. Kerrigan 440 Lincoln Street Worcester MA 01653	Common	05/20/2026	6262	1208503.38

144: Remarks and Signature

Remarks
Date of Notice	08/19/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	05/21/2026
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/ Joshua Schmitt, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Dennis F. Kerrigan.
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)