T. Rowe Price Associates (THG) discloses 5.2% Hanover Insurance ownership stake

Rhea-AI Filing Summary

T. Rowe Price Associates, Inc., a Maryland-based investment manager, reports beneficial ownership in Hanover Insurance Group Inc. common stock. The firm reports holding 1,831,584 shares, representing 5.2% of the outstanding common stock, identified by CUSIP 410867105.

The firm reports sole voting power1,819,788 shares and sole dispositive power1,831,584 shares, with no shared voting or dispositive power. T. Rowe Price Associates states that this report should not be construed as an admission that it is the beneficial owner of these securities, and such beneficial ownership is expressly denied.

Key Figures

Shares beneficially owned: 1,831,584 shares Percent of class: 5.2 % Sole voting power: 1,819,788 shares +3 more

6 metrics

Shares beneficially owned 1,831,584 shares Beneficial ownership in Hanover Insurance Group common stock reported by T. Rowe Price Associates

Percent of class 5.2 % Portion of Hanover Insurance Group common stock class reported as beneficially owned

Sole voting power 1,819,788 shares Shares over which T. Rowe Price Associates reports sole power to vote or direct the vote

Shared voting power 0 shares Shares over which T. Rowe Price Associates reports shared power to vote

Sole dispositive power 1,831,584 shares Shares over which T. Rowe Price Associates reports sole power to dispose

Shared dispositive power 0 shares Shares over which T. Rowe Price Associates reports shared power to dispose

Key Terms

beneficially owned, sole voting power, sole dispositive power, percent of class, +1 more

5 terms

beneficially owned financial

"Item 4. | Ownership (a) | Amount beneficially owned: 1831584"

Beneficially owned describes securities or assets where a person has the economic rights and control—such as the right to receive dividends and to direct voting—even if legal title is held in another name. Think of it like having the keys and using a car that’s registered to someone else: you get the benefits and make decisions. Investors care because beneficial ownership reveals who truly controls value and voting power, affecting corporate decisions and takeover dynamics.

sole voting power financial

"(i) Sole power to vote or to direct the vote: 1819788"

Sole voting power is the exclusive right to cast votes attached to a shareholder’s stock without needing approval from anyone else. Like holding the only remote control for a TV, it lets that holder decide corporate matters such as board members, mergers, and policy changes, making it important to investors because it concentrates control and can strongly influence a company’s strategy and the value of its shares.

sole dispositive power financial

"(iii) Sole power to dispose or to direct the disposition of: 1831584"

Sole dispositive power is the exclusive legal authority to decide what happens to a security — for example, whether to sell, transfer, or retain shares — without needing anyone else’s permission. Investors care because it signals who truly controls the economic outcome of an investment: like holding the only key to a safe, the holder can realize gains or losses and may trigger regulatory reporting, insider rules, or influence over corporate ownership.

percent of class financial

"(b) | Percent of class: 5.2 %"

Percent of class is the portion of a specific category of securities—such as a company’s common shares, preferred shares, or a bond series—that takes part in or approves a corporate action (vote, consent, tender, etc.). Investors watch this number because it reveals how much support or opposition exists within that particular shareholder group; like counting how many members of a club back a proposal, it can determine whether a plan passes or how influence is distributed.

CUSIP Number(s) financial

"(e) | CUSIP Number(s): 410867105"

FAQ

What percentage of Hanover Insurance Group (THG) shares does T. Rowe Price Associates report owning?

T. Rowe Price Associates reports beneficial ownership of 5.2% of Hanover Insurance Group (THG) common stock. This corresponds to 1,831,584 shares as stated in the Schedule 13G ownership section.

How many Hanover Insurance Group (THG) shares does T. Rowe Price Associates report holding?

T. Rowe Price Associates reports beneficial ownership of 1,831,584 Hanover Insurance Group (THG) common shares. This share count underlies the reported 5.2% ownership of the company’s common stock.

What voting power does T. Rowe Price Associates have over Hanover Insurance Group (THG) shares?

T. Rowe Price Associates reports sole voting power over 1,819,788 THG shares and no shared voting power. This distinguishes the shares it can vote independently from those with any shared authority, which here is reported as zero.

What dispositive power does T. Rowe Price Associates report over Hanover Insurance Group (THG) shares?

The firm reports sole dispositive power over 1,831,584 THG shares and no shared dispositive power. Dispositive power refers to the authority to dispose of or direct the disposition of these shares.

Does T. Rowe Price Associates admit beneficial ownership of Hanover Insurance Group (THG) shares?

No. T. Rowe Price Associates states that the report shall not be construed as an admission that it is the beneficial owner of the Hanover Insurance Group securities, and that such beneficial ownership is expressly denied.

Where is Hanover Insurance Group (THG) headquartered, and what class of securities is reported?

Hanover Insurance Group’s principal executive offices are at 440 Lincoln St, Worcester, MA 01653. The reported security is its common stock, identified by CUSIP 410867105.

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

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Available on EDGAR 08/14/2026 - 10:39 AM Accepted by SEC EDGAR 08/14/2026 - 10:38 AM Learn about SEC filing dates

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

HANOVER INSURANCE GROUP INC/

(Name of Issuer)

COMMON STOCK

(Title of Class of Securities)

410867105

(CUSIP Number)

06/30/2026

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

schemaVersion:

SCHEDULE 13G

CUSIP Number(s): 410867105

1

Names of Reporting Persons

T. Rowe Price Associates, Inc.

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

MARYLAND

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 1,819,788.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 1,831,584.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

1,831,584.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

5.2 %

12

Type of Reporting Person (See Instructions)

IA

SCHEDULE 13G

Item 1.
(a)	Name of issuer: HANOVER INSURANCE GROUP INC/
(b)	Address of issuer's principal executive offices: 440 LINCOLN ST, WORCESTER, MA, 01653
Item 2.
(a)	Name of person filing: T. Rowe Price Associates, Inc.
(b)	Address or principal business office or, if none, residence: 1307 Point Street, Baltimore, MD 21231
(c)	Citizenship: Maryland
(d)	Title of class of securities: COMMON STOCK
(e)	CUSIP Number(s): 410867105
Item 3.	If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)	Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)	Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)	Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)	Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)	An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)	An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)	A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)	A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)	A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)	A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:
(k)	Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.	Ownership
(a)	Amount beneficially owned: 1831584
(b)	Percent of class: 5.2 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 1819788
	(ii) Shared power to vote or to direct the vote: 0
	(iii) Sole power to dispose or to direct the disposition of: 1831584
	(iv) Shared power to dispose or to direct the disposition of: 0
Item 5.	Ownership of 5 Percent or Less of a Class.
	Not Applicable
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	Not Applicable
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	Not Applicable
Item 8.	Identification and Classification of Members of the Group.
	Not Applicable
Item 9.	Notice of Dissolution of Group.
	Not Applicable

Item 10.

Certifications:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under § 240.14a-11. T. Rowe Price Associates, Inc. hereby declares and affirms that the filing of Schedule 13G shall not be construed as an admission that Price Associates is the beneficial owner of the securities referred to, which beneficial ownership is expressly denied.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

T. Rowe Price Associates, Inc.

Signature:	Ellen York
Name/Title:	Vice President
Date:	08/14/2026