Hanover Insurance (THG) EVP sells 8,655 shares under 10b5-1 plan

Q: What insider transactions did THG Executive Vice President Dennis Francis Kerrigan report?

Dennis Francis Kerrigan exercised options to acquire 8,655 shares of HANOVER INSURANCE GROUP, INC. (THG) common stock at an exercise price of $118.54 per share, then sold the 8,655 shares in open-market transactions on August 19–20, 2026 under a Rule 10b5-1 plan.

Q: How many THG shares were sold in this Form 4 and at what prices?

The Form 4 reports open-market sales totaling 8,655 shares of THG common stock. Tranches were sold at weighted-average prices of about $220.41, $221.73, $222.77, $220.01 and $222.97 per share, each representing weighted averages over disclosed intraday price ranges.

Q: What was the option exercise price for the THG shares in this filing?

The options exercised by Dennis Francis Kerrigan carried a conversion or exercise price of $118.54 per share. Exercising these options on August 19–20, 2026 generated 8,655 shares of THG common stock, which were then sold in open-market transactions reported in the same Form 4.

Q: What is the size and vesting schedule of the THG option exercised in this Form 4?

The option represented the right to purchase a total of 8,655 shares of THG common stock. According to a footnote, it vested in three equal installments of 1/3 each on February 28, 2021, February 28, 2022 and February 28, 2023.

Q: On which dates did the THG insider option exercises and sales occur?

The Form 4 reports option exercises and related sales on August 19, 2026 and August 20, 2026. On each date, options at $118.54 per share were exercised into THG common stock and the resulting shares were sold in open-market transactions.

Filing Impact

(Neutral)

Filing Sentiment

(Neutral)

Form Type

Rhea-AI Filing Summary

HANOVER INSURANCE GROUP, INC. (THG) reported insider equity transactions by Executive Vice President Dennis Francis Kerrigan. On August 19–20, 2026, he exercised options to acquire a total of 8,655 shares of THG common stock at an exercise price of $118.54 per share, from an option that vested in three equal installments on February 28, 2021, 2022 and 2023. The 8,655 shares acquired upon exercise were then sold in open-market transactions on those dates at weighted-average prices around $220–$223 per share under a pre-established Rule 10b5-1 Trading Plan adopted on May 21, 2026.

Insider Trade Summary 10b5-1

Exercise and Sale: 8,655 shares ($888K approx. pre-tax spread)

Exercise and Sale 9 txns

Insider Kerrigan Dennis Francis

Role Executive Vice President

Sold 8,655 shs ($1.91M)

Approx. gross sale proceeds $1.91M

Approx. exercise cost $1.03M

Approx. pre-tax spread $888K

Type	Security	Shares	Price	Value
Exercise	Common Stock Option (right to buy) ^F7	2,104	$0.00	$0.00
Exercise	Common Stock ^F1	2,104	$118.54	$249K
Sale	Common Stock ^{F1, F5}	400	$220.01	$88K
Sale	Common Stock ^{F1, F6}	1,704	$222.97	$380K
Exercise	Common Stock Option (right to buy) ^F7	6,551	$0.00	$0.00
Exercise	Common Stock ^F1	6,551	$118.54	$777K
Sale	Common Stock ^{F1, F2}	4,822	$220.41	$1.06M
Sale	Common Stock ^{F1, F3}	1,505	$221.73	$334K
Sale	Common Stock ^{F1, F4}	224	$222.77	$50K

Holdings After Transaction: Common Stock Option (right to buy) — 0 shares (Direct); Common Stock — 12,002.941 shares (Direct)

Footnotes (7)

F1. Pursuant to a pre-established Rule 10b5-1 Trading Plan, adopted on May 21, 2026, the Reporting Person's options were exercised and sold.
F2. The price reported in Column 4 is a weighted average price. The shares were sold at multiple prices ranging from $220.00 to $220.95. The Reporting Person undertakes to provide The Hanover Insurance Group, Inc. ("THG"), any security holder of THG, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the range set forth above.
F3. The price reported in Column 4 is a weighted average price. The shares were sold at multiple prices ranging from $221.19 to $221.99. The Reporting Person undertakes to provide THG, any security holder of THG, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the range set forth above.
F4. The price reported in Column 4 is a weighted average price. The shares were sold at multiple prices ranging from $222.76 to $222.97. The Reporting Person undertakes to provide THG, any security holder of THG, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the range set forth above.
F5. The price reported in Column 4 is a weighted average price. The shares were sold at multiple prices ranging from $220.00 to $220.02. The Reporting Person undertakes to provide THG, any security holder of THG, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the range set forth above.
F6. The price reported in Column 4 is a weighted average price. The shares were sold at multiple prices ranging from $222.41 to $223.41. The Reporting Person undertakes to provide THG, any security holder of THG, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the range set forth above.
F7. The option, representing the right to purchase a total of 8,655 shares, vested 1/3 on each of 2/28/21, 2/28/22 and 2/28/23.

Key Figures

Shares underlying option exercised: 8,655 shares Option exercise price: $118.54 per share Shares sold August 19, 2026: 6,551 + 4,822 + 1,505 + 224 shares +5 more

8 metrics

Shares underlying option exercised 8,655 shares Total shares subject to option exercised on August 19–20, 2026

Option exercise price $118.54 per share Conversion or exercise price for THG common stock options exercised

Shares sold August 19, 2026 6,551 + 4,822 + 1,505 + 224 shares Tranches of THG common stock sold following exercises on August 19, 2026

Weighted average sale price tranche $220.41 per share One August 19, 2026 sale tranche; weighted average over $220.00–$220.95

Weighted average sale price tranche $221.73 per share One August 19, 2026 sale tranche; weighted average over $221.19–$221.99

Weighted average sale price tranche $222.77 per share One August 19, 2026 sale tranche; weighted average over $222.76–$222.97

Weighted average sale price tranche $220.01 per share One August 20, 2026 sale tranche; weighted average over $220.00–$220.02

Weighted average sale price tranche $222.97 per share One August 20, 2026 sale tranche; weighted average over $222.41–$223.41

Key Terms

Rule 10b5-1 Trading Plan, weighted average price, Common Stock Option (right to buy), Exercise or conversion of derivative security, +1 more

5 terms

Rule 10b5-1 Trading Plan regulatory

"Pursuant to a pre-established Rule 10b5-1 Trading Plan, adopted on May 21"

A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.

weighted average price financial

"The price reported in Column 4 is 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.

Common Stock Option (right to buy) financial

"security_title": "Common Stock Option (right to buy)"

Exercise or conversion of derivative security financial

"transaction_code_description": "Exercise or conversion of derivative security"

open market or private transaction financial

"transaction_code_description": "Sale in open market or private transaction"

FAQ

What insider transactions did THG Executive Vice President Dennis Francis Kerrigan report?

Dennis Francis Kerrigan exercised options to acquire 8,655 shares of HANOVER INSURANCE GROUP, INC. (THG) common stock at an exercise price of $118.54 per share, then sold the 8,655 shares in open-market transactions on August 19–20, 2026 under a Rule 10b5-1 plan.

How many THG shares were sold in this Form 4 and at what prices?

The Form 4 reports open-market sales totaling 8,655 shares of THG common stock. Tranches were sold at weighted-average prices of about $220.41, $221.73, $222.77, $220.01 and $222.97 per share, each representing weighted averages over disclosed intraday price ranges.

What was the option exercise price for the THG shares in this filing?

The options exercised by Dennis Francis Kerrigan carried a conversion or exercise price of $118.54 per share. Exercising these options on August 19–20, 2026 generated 8,655 shares of THG common stock, which were then sold in open-market transactions reported in the same Form 4.

Was the THG insider trading activity conducted under a Rule 10b5-1 plan?

Yes. A footnote states that the options were exercised and sold pursuant to a pre-established Rule 10b5-1 Trading Plan adopted on May 21, 2026. The filing’s Rule 10b5-1 checkbox is also marked as affirmed for these transactions.

What is the size and vesting schedule of the THG option exercised in this Form 4?

The option represented the right to purchase a total of 8,655 shares of THG common stock. According to a footnote, it vested in three equal installments of 1/3 each on February 28, 2021, February 28, 2022 and February 28, 2023.

On which dates did the THG insider option exercises and sales occur?

The Form 4 reports option exercises and related sales on August 19, 2026 and August 20, 2026. On each date, options at $118.54 per share were exercised into THG common stock and the resulting shares were sold in open-market transactions.

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Available on EDGAR 08/21/2026 - 08:14 AM Accepted by SEC EDGAR 08/21/2026 - 08:13 AM

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^*

Kerrigan Dennis Francis

(Last)

(First)

(Middle)

C/O THE HANOVER INSURANCE GROUP, INC.

440 LINCOLN STREET

(Street)

WORCESTER

MASSACHUSETTS

01653

(City)

(State)

(Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
HANOVER INSURANCE GROUP, INC. [ THG ]

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

	Director	10% Owner
X	Officer (give title below)	Other (specify below)
	Executive Vice President

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
08/19/2026

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	08/19/2026		M⁽¹⁾		6,551	A	$118.54	18,553.941	D
Common Stock	08/19/2026		S⁽¹⁾		4,822	D	$220.41⁽²⁾	13,731.941	D
Common Stock	08/19/2026		S⁽¹⁾		1,505	D	$221.73⁽³⁾	12,226.941	D
Common Stock	08/19/2026		S⁽¹⁾		224	D	$222.77⁽⁴⁾	12,002.941	D
Common Stock	08/20/2026		M⁽¹⁾		2,104	A	$118.54	14,106.941	D
Common Stock	08/20/2026		S⁽¹⁾		400	D	$220.01⁽⁵⁾	13,706.941	D
Common Stock	08/20/2026		S⁽¹⁾		1,704	D	$222.97⁽⁶⁾	12,002.941	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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock Option (right to buy)	$118.54	08/19/2026		M			6,551	⁽⁷⁾	02/28/2030	Common Stock	6,551	$0	2,104	D
Common Stock Option (right to buy)	$118.54	08/20/2026		M			2,104	⁽⁷⁾	02/28/2030	Common Stock	2,104	$0	0	D

Explanation of Responses:

1. Pursuant to a pre-established Rule 10b5-1 Trading Plan, adopted on May 21, 2026, the Reporting Person's options were exercised and sold.

2. The price reported in Column 4 is a weighted average price. The shares were sold at multiple prices ranging from $220.00 to $220.95. The Reporting Person undertakes to provide The Hanover Insurance Group, Inc. ("THG"), any security holder of THG, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the range set forth above.

3. The price reported in Column 4 is a weighted average price. The shares were sold at multiple prices ranging from $221.19 to $221.99. The Reporting Person undertakes to provide THG, any security holder of THG, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the range set forth above.

4. The price reported in Column 4 is a weighted average price. The shares were sold at multiple prices ranging from $222.76 to $222.97. The Reporting Person undertakes to provide THG, any security holder of THG, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the range set forth above.

5. The price reported in Column 4 is a weighted average price. The shares were sold at multiple prices ranging from $220.00 to $220.02. The Reporting Person undertakes to provide THG, any security holder of THG, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the range set forth above.

6. The price reported in Column 4 is a weighted average price. The shares were sold at multiple prices ranging from $222.41 to $223.41. The Reporting Person undertakes to provide THG, any security holder of THG, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the range set forth above.

7. The option, representing the right to purchase a total of 8,655 shares, vested 1/3 on each of 2/28/21, 2/28/22 and 2/28/23.

	/s/ Lindsay L. Katz pursuant to Confirming Statement	08/21/2026
	** 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)

Source: View Original Filing on SEC EDGAR