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Hanover Insurance (THG) SVP Norton-Gatto reports initial stock and option holdings

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
3

Rhea-AI Filing Summary

HANOVER INSURANCE GROUP, INC. senior vice president and principal accounting officer Patricia A. Norton-Gatto reported her initial ownership of company securities. She holds 2,440.302 shares of common stock directly, including restricted stock units that vest on the third anniversary of their grant dates.

She also holds stock options to acquire 963 shares of common stock at an exercise price of $173.5600 per share expiring on February 24, 2036, and options for 920 shares at $161.8200 per share expiring on February 25, 2035. The filing lists these as existing positions rather than new transactions.

Positive

  • None.

Negative

  • None.
Insider Norton-Gatto Patricia A.
Role SVP & Princpl. Accntg. Officer
Type Security Shares Price Value
holding Common Stock Option (right to buy) -- -- --
holding Common Stock Option (right to buy) -- -- --
holding Common Stock -- -- --
Holdings After Transaction: Common Stock Option (right to buy) — 920 shares (Direct, null); Common Stock — 2,440.302 shares (Direct, null)
Footnotes (1)
  1. Includes 470.322 restricted stock units ("RSUs") and underlying dividend equivalent rights granted on 2/27/24, 412.714 RSUs and underlying dividend equivalent rights granted on 2/25/2025, and 406.266 RSUs and underlying dividend equivalent rights granted on 2/24/2026. Each grant of RSUs and the underlying dividend equivalent rights vest on the third anniversary of each applicable grant date. Such options were granted on 2/25/25 and vest as to one-third of the shares on each of the first three anniversaries of the grant date. The first 1/3 vested on 2/25/2026. Such options were granted on 2/24/26 and vest as to one-third of the shares on each of the first three anniversaries of the grant date.
Direct common stock 2,440.302 shares Directly held common stock as reported on Form 3
RSU grant 2024 470.322 RSUs Restricted stock units granted on February 27, 2024
RSU grant 2025 412.714 RSUs Restricted stock units granted on February 25, 2025
RSU grant 2026 406.266 RSUs Restricted stock units granted on February 24, 2026
Option position 1 963 shares at $173.5600 Common stock options, expiration February 24, 2036
Option position 2 920 shares at $161.8200 Common stock options, expiration February 25, 2035
restricted stock units ("RSUs") financial
"Includes 470.322 restricted stock units ("RSUs") and underlying dividend equivalent rights granted on 2/27/24"
Restricted stock units (RSUs) are a company promise to give an employee shares of stock (or cash equivalent) in the future, but only after certain conditions—usually staying with the company for a set time or hitting performance goals—are met. Investors watch RSUs because when they vest they increase the number of shares outstanding and can lead insiders to sell shares, affecting share price, company dilution and the true cost of employee pay.
dividend equivalent rights financial
"Includes 470.322 restricted stock units ("RSUs") and underlying dividend equivalent rights granted on 2/27/24"
Dividend equivalent rights are promises that mirror the cash payments shareholders get from a company’s profits, but they are paid to holders of certain awards (like stock options or restricted stock units) rather than to actual shares. Think of them as a paycheck top‑up that matches dividends while the award is not yet a real stock, and they matter to investors because they add to employee compensation costs and potential share dilution, affecting company profitability and per‑share value.
exercise price financial
"conversion_or_exercise_price": "173.5600""
The exercise price is the fixed amount at which you can buy or sell an asset, like a stock, when using an options contract. It matters because it helps determine whether exercising the option will be profitable or not, depending on the current market price. Think of it as the set price you agree on today to buy or sell later.
expiration date financial
"expiration_date": "2036-02-24T00:00:00.000Z""
The expiration date is the deadline after which a financial contract, such as an option or a futures agreement, is no longer valid or can be exercised. It matters to investors because it determines the timeframe during which they can take action or benefit from the contract, similar to how a coupon or a food item has a limited period of usefulness. Once the expiration date passes, the contract loses its value or ability to be used.
SEC Form 3
FORM 3UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

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:3235-0104
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hours per response:0.5
1. Name and Address of Reporting Person*
Norton-Gatto Patricia A.

(Last)(First)(Middle)
440 LINCOLN STREET

(Street)
WORCESTER MASSACHUSETTS 01653

(City)(State)(Zip)

UNITED STATES

(Country)
2. Date of Event Requiring Statement (Month/Day/Year)
05/13/2026
3. Issuer Name and Ticker or Trading Symbol
HANOVER INSURANCE GROUP, INC. [ THG ]
3a. Foreign Trading Symbol
5. If Amendment, Date of Original Filed (Month/Day/Year)
4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director10% Owner
XOfficer (give title below)Other (specify below)
SVP & Princpl. Accntg. Officer
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4) 2. Amount of Securities Beneficially Owned (Instr. 4) 3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Stock2,440.302(1)D
Table II - Derivative Securities Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4) 2. Date Exercisable and Expiration Date (Month/Day/Year)3. Title and Amount of Securities Underlying Derivative Security (Instr. 4) 4. Conversion or Exercise Price of Derivative Security 5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 6. Nature of Indirect Beneficial Ownership (Instr. 5)
Date ExercisableExpiration DateTitleAmount or Number of Shares
Common Stock Option (right to buy) (2)02/25/2035Common Stock920$161.82D
Common Stock Option (right to buy) (3)02/24/2036Common Stock963$173.56D
Explanation of Responses:
1. Includes 470.322 restricted stock units ("RSUs") and underlying dividend equivalent rights granted on 2/27/24, 412.714 RSUs and underlying dividend equivalent rights granted on 2/25/2025, and 406.266 RSUs and underlying dividend equivalent rights granted on 2/24/2026. Each grant of RSUs and the underlying dividend equivalent rights vest on the third anniversary of each applicable grant date.
2. Such options were granted on 2/25/25 and vest as to one-third of the shares on each of the first three anniversaries of the grant date. The first 1/3 vested on 2/25/2026.
3. Such options were granted on 2/24/26 and vest as to one-third of the shares on each of the first three anniversaries of the grant date.
Remarks:
Exhibit 24 - Power of Attorney
/s/ Lindsay L. Katz, Attorney-in-Fact05/13/2026
** Signature of Reporting PersonDate
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 5 (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 3: SEC 1473 (03-26)

FAQ

What does the THG Form 3 filing show for Patricia A. Norton-Gatto?

The Form 3 shows Patricia A. Norton-Gatto’s initial ownership in Hanover Insurance. She directly holds 2,440.302 common shares and several restricted stock unit and option awards that represent her existing equity-based compensation position with the company.

How many Hanover Insurance (THG) common shares does Patricia Norton-Gatto own?

Patricia Norton-Gatto directly owns 2,440.302 shares of Hanover Insurance common stock. This total includes various restricted stock units and related dividend equivalent rights that vest in the future, reflecting a combination of vested and unvested equity awards.

What stock options are reported for Patricia Norton-Gatto in the THG Form 3?

She holds options on 963 Hanover Insurance shares at $173.5600 per share expiring in 2036, and options on 920 shares at $161.8200 per share expiring in 2035. These options are existing awards that vest over three years from their respective grant dates.

Are there any buy or sell transactions in this THG Form 3 filing?

The Form 3 does not report any new buy or sell transactions. It functions as an initial statement of beneficial ownership, listing Patricia Norton-Gatto’s existing common stock, restricted stock units, and stock option positions with Hanover Insurance Group.

How do the restricted stock units in the THG Form 3 vest?

The restricted stock units reported vest on the third anniversary of each grant date. Grants include 470.322 RSUs from February 27, 2024, 412.714 RSUs from February 25, 2025, and 406.266 RSUs from February 24, 2026, each with associated dividend equivalent rights.