The Hanover Insurance Group, Inc.
US ˙ NYSE ˙ US4108671052

SecurityTHG / The Hanover Insurance Group, Inc.
InstitutionGrimes & Company, Inc.
Latest Disclosed Ownership2,123 shares
Latest Disclosed Value $ 367,936
Grimes & Company, Inc. reports 1.38% increase in ownership of THG / The Hanover Insurance Group, Inc.

On April 21, 2026 - Grimes & Company, Inc. filed a 13F-HR form disclosing ownership of 2,123 shares of The Hanover Insurance Group, Inc. (US:THG) valued at $368,022 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 3, 2026 disclosing 2,094 shares of The Hanover Insurance Group, Inc.. This represents a change in shares of 1.38% during the quarter. The current value of the position is $395,621 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

Upgrade to unlock premium data and export to Excel .

Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-04-21 2026-03-31 13F HANOVER INS GROUP COM 410867105 2,123 29 1.38 368 -3.93 0.0102
2026-02-03 2025-12-31 13F HANOVER INS GROUP COM 410867105 2,094 8 0.38 383 1.06 0.0091
2025-10-27 2025-09-30 13F HANOVER INS GROUP COM 410867105 2,086 8 0.38 379 7.39 0.0094
2025-07-22 2025-06-30 13F HANOVER INS GROUP COM 410867105 2,078 9 0.43 353 -1.95 0.0096
2025-04-17 2025-03-31 13F HANOVER INS GROUP COM 410867105 2,069 10 0.49 360 12.89 0.0111
2025-01-21 2024-12-31 13F HANOVER INS GROUP COM 410867105 2,059 9 0.44 318 4.95 0.0092
2024-10-22 2024-09-30 13F HANOVER INS GROUP COM 410867105 2,050 9 0.44 304 18.36 0.0082
2024-07-22 2024-06-30 13F HANOVER INS GROUP COM 410867105 2,041 10 0.49 256 -7.25 0.0077
2024-04-17 2024-03-31 13F HANOVER INS GROUP COM 410867105 2,031 10 0.49 276 12.65 0.0085
2024-01-24 2023-12-31 13F HANOVER INS GROUP COM 410867105 2,021 11 0.55 245 9.87 0.0081
2023-10-19 2023-09-30 13F HANOVER INS GROUP COM 410867105 2,010 10 0.50 223 -1.33 0.0086
2023-07-19 2023-06-30 13F HANOVER INS GROUP COM 410867105 2,000 0 0.00 226 -12.06 0.0080
2023-04-20 2023-03-31 13F HANOVER INS GROUP COM 410867105 2,000 0 0.00 257 -4.81 0.0105
2023-01-25 2022-12-31 13F HANOVER INS GROUP COM 410867105 2,000 0 0.00 270 5.47 0.0114
2022-10-28 2022-09-30 13F HANOVER INS GROUP COM 410867105 2,000 0 0.00 256 -12.63 0.0134
2022-07-22 2022-06-30 13F HANOVER INS GROUP COM 410867105 2,000 0 0.00 293 -2.01 0.0148
2022-05-06 2022-03-31 13F HANOVER INS GROUP COM 410867105 2,000 0 0.00 299 14.12 0.0140
2022-02-01 2021-12-31 13F HANOVER INS GROUP COM 410867105 2,000 0 0.00 262 1.16 0.0120
2021-11-08 2021-09-30 13F HANOVER INS GROUP COM 410867105 2,000 0 0.00 259 -4.43 0.0113
2021-08-04 2021-06-30 13F HANOVER INS GROUP COM 410867105 2,000 0 0.00 271 4.63 0.0118
2021-05-12 2021-03-31 13F HANOVER INS GROUP COM 410867105 2,000 -38,706 -95.09 259 -94.56 0.0125
2021-02-02 2020-12-31 13F Hanover Insurance Group In COM 410867105 40,706 -18,000 -30.66 4,759 -13.00 0.2472
2020-11-12 2020-09-30 13F Hanover Insurance Group In COM 410867105 58,706 0 0.00 5,470 -8.05 0.3499
2020-07-31 2020-06-30 13F Hanover Insurance Group In COM 410867105 58,706 0 0.00 5,949 11.87 0.4134
2020-05-05 2020-03-31 13F Hanover Insurance Group In COM 410867105 58,706 309 0.53 5,318 -33.37 0.4854
2020-02-05 2019-12-31 13F Hanover Insurance Group In COM 410867105 58,397 0 0.00 7,981 0.83 0.5229
2019-11-05 2019-09-30 13F Hanover Insurance Group In COM 410867105 58,397 0 0.00 7,915 5.65 0.5639
2019-07-30 2019-06-30 13F Hanover Insurance Group In COM 410867105 58,397 -2,775 -4.54 7,492 7.27 0.5686
2019-05-02 2019-03-31 13F Hanover Insurance Group In COM 410867105 61,172 6,234 11.35 6,984 8.87 0.5474
2019-02-01 2018-12-31 13F Hanover Insurance Group In COM 410867105 54,938 -5,500 -9.10 6,415 -13.97 0.6261
2018-11-09 2018-09-30 13F Hanover Insurance Group In COM 410867105 60,438 -775 -1.27 7,457 1.89 0.5970
2018-08-10 2018-06-30 13F Hanover Insurance Group In COM 410867105 61,213 5,731 10.33 7,319 11.89 0.6469
2018-05-07 2018-03-31 13F Hanover Insurance Group In COM 410867105 55,482 5,968 12.05 6,541 22.24 0.6337
2018-02-05 2017-12-31 13F Hanover Insurance Group In COM 410867105 49,514 -200 -0.40 5,351 11.04 0.5165
2017-11-03 2017-09-30 13F Hanover Insurance Group In COM 410867105 49,714 0 0.00 4,819 9.37 0.5124
2017-07-18 2017-06-30 13F Hanover Insurance Group In COM 410867105 49,714 0 0.00 4,406 -1.59 0.4915
2017-05-01 2017-03-31 13F Hanover Insurance Group In COM 410867105 49,714 1,075 2.21 4,477 1.15 0.4904
2017-01-24 2016-12-31 13F Hanover Insurance Group In COM 410867105 48,639 -300 -0.61 4,426 19.91 0.5134
2016-10-24 2016-09-30 13F Hanover Insurance Group In COM 410867105 48,939 2,452 5.27 3,691 -6.18 0.4940
2016-07-25 2016-06-30 13F Hanover Insurance Group In COM 410867105 46,487 0 0.00 3,934 -6.20 0.5258
2016-04-25 2016-03-31 13F Hanover Insurance Group In COM 410867105 46,487 6,811 17.17 4,194 29.93 0.5396
2016-02-03 2015-12-31 13F Hanover Insurance Group In COM 410867105 39,676 1,066 2.76 3,228 5.11 0.4359
2015-10-08 2015-09-30 13F Hanover Insurance Group In COM 410867105 38,610 984 2.62 3,071 4.92 0.3951
2015-08-11 2015-06-30 13F Hanover Insurance Group In COM 410867105 37,626 2,251 6.36 2,927 10.96 0.4122
2015-04-24 2015-03-31 13F Hanover Insurance Group In COM 410867105 35,375 74 0.21 2,638 4.77 0.6341
2015-02-12 2014-12-31 13F Hanover Insurance Group In COM 410867105 35,301 0 0.00 2,518 16.14 0.6509
2014-11-06 2014-09-30 13F Hanover Insurance Group In COM 410867105 35,301 1,484 4.39 2,168 1.50 0.5674
2014-07-28 2014-06-30 13F Hanover Insurance Group In COM 410867105 33,817 -506 -1.47 2,136 1.28 0.5596
2014-05-01 2014-03-31 13F Hanover Insurance Group In COM 410867105 34,323 362 1.07 2,109 3.99 0.5923
2014-02-03 2013-12-31 13F Hanover Insurance Group In COM 410867105 33,961 503 1.50 2,028 9.56 0.6061
2013-10-29 2013-09-30 13F Hanover Insurance Group, I COM 410867105 33,458 1,484 4.64 1,851 18.35 0.6261
2013-07-30 2013-06-30 13F Hanover Insurance Group, I COM 410867105 31,974 31,974 1,564 0.5704
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.