HANOVER INSURANCE GROUP, INC. — Director's Dealing 2021

May 5, 2021

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: HANOVER INSURANCE GROUP, INC. (THG)
CIK: 0000944695
Period of Report: 2021-05-03

Reporting Person: Lee Willard T (Executive Vice President)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2021-05-03	Common Stock	M	1408	$117.22	Acquired	4054.615	Direct
2021-05-03	Common Stock	S	1408	$140.202	Disposed	2646.615	Direct
2021-05-03	Common Stock	M	1299	$118.54	Acquired	3945.615	Direct
2021-05-03	Common Stock	S	1299	$140.23	Disposed	2646.615	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2021-05-03	Common Stock Option (right to buy)	$117.22	M	1408	Disposed	2029-03-05	Common Stock (1408)	Direct
2021-05-03	Common Stock Option (right to buy)	$118.54	M	1299	Disposed	2030-02-28	Common Stock (1299)	Direct

Footnotes

F1: The price reported in Column 4 is a weighted average price. The shares were sold at multiple prices ranging from $140.164 to $140.24. 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.

F2: The option, representing the right to purchase a total of 2,111 shares, vested 1/3 on 3/05/20 and 3/05/21, and the remaining 1/3 will vest on 3/05/22.

F3: The option, representing the right to purchase a total of 3,897 shares, vested 1/3 on 2/28/21, another 1/3 will vest on 2/28/22, and the remaining 1/3 will vest on 2/28/23.