Hanover Insurance officer plans $468K stock sale

HANOVER INSURANCE GROUP, INC.

Rhea-AI Filing Summary

HANOVER INSURANCE GROUP, INC. (THG) received a notice that officer Dennis F. Kerrigan intends to sell up to 2,104 shares of common stock. The shares are expected to be sold on or about 08/20/2026 on the NYSE through Fidelity Brokerage Services LLC, in connection with a stock option exercise for cash.

The notice also lists prior sales of THG common stock by Dennis Kerrigan in the preceding three months.

Key Figures

Shares intended for sale: 2,104 shares Aggregate value of intended sale entry: $467,947.38 Shares sold 05/20/2026: 6,262 shares +3 more

6 metrics

Shares intended for sale 2,104 shares Common stock of HANOVER INSURANCE GROUP, INC. associated with proposed sale around 08/20/2026

Aggregate value of intended sale entry $467,947.38 Value shown with 2,104 THG common shares in the securities information section

Shares sold 05/20/2026 6,262 shares Common stock sold by Dennis Kerrigan during the past 3 months

Proceeds 05/20/2026 sale $1,208,503.38 Consideration for 6,262 THG common shares sold 05/20/2026

Shares sold 08/19/2026 6,551 shares Common stock sold by Dennis Kerrigan during the past 3 months

Proceeds 08/19/2026 sale $1,446,415.60 Consideration for 6,551 THG common shares sold 08/19/2026

Key Terms

Rule 144, stock option exercise, attorney-in-fact, common stock

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.

stock option exercise financial

"Common | 08/20/2026 | 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.

common stock financial

"Common | Fidelity Brokerage Services LLC"

Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.

FAQ

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

What does the Form 144 filing indicate for HANOVER INSURANCE GROUP, INC. (THG)?

It indicates that officer Dennis F. Kerrigan has given notice of a proposed sale of up to 2,104 shares of THG common stock, expected around 08/20/2026, in connection with a stock option exercise through Fidelity Brokerage Services LLC on the NYSE.

How many THG shares are proposed to be sold under this Form 144?

The notice covers a proposed sale of up to 2,104 shares of HANOVER INSURANCE GROUP, INC. common stock, with an indicated aggregate value of $467,947.38 for these securities information entries.

What recent THG stock sales has Dennis Kerrigan reported in the last three months?

The notice lists two prior sales of THG common stock: 6,262 shares for $1,208,503.38 on 05/20/2026, and 6,551 shares for $1,446,415.60 on 08/19/2026.

How will the THG shares be acquired for the planned sale?

The shares are tied to a stock option exercise, with the transaction listed as “Stock Option Exercise” by the issuer, and the consideration method indicated as cash as of 08/20/2026.

Who is handling the brokerage for the THG shares covered by this Form 144?

The brokerage firm listed is Fidelity Brokerage Services LLC, located in Smithfield, Rhode Island, which is identified as the broker for the 2,104 THG common shares intended to be sold on the NYSE.

Who signed the notice related to the THG share sale?

The notice is signed by /s/ Wade Moss as a duly authorized representative of Fidelity Brokerage Services LLC, acting as attorney-in-fact for Dennis F. Kerrigan.

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

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Accepted by SEC EDGAR 08/20/2026 - 04:30 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	2104	467947.38	34820221	08/20/2026	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	08/20/2026	Stock Option Exercise	Issuer			2104	08/20/2026	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 Kerrigan 440 Lincoln Street Worcester MA 01653	Common	05/20/2026	6262	1208503.38
Dennis Kerrigan 440 Lincoln Street Worcester MA 01653	Common	08/19/2026	6551	1446415.60

144: Remarks and Signature

Remarks
Date of Notice	08/20/2026
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/Wade Moss, 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)