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

SecurityTHG / The Hanover Insurance Group, Inc.
InstitutionShell Asset Management Co
Latest Disclosed Ownership1,055 shares
Latest Disclosed Value $ 192
Shell Asset Management Co reports 57.75% decrease in ownership of THG / The Hanover Insurance Group, Inc.

On November 7, 2025 - Shell Asset Management Co filed a 13F-HR form disclosing ownership of 1,055 shares of The Hanover Insurance Group, Inc. (US:THG) valued at $191,620 USD as of September 30, 2025. The entity filed a previous 13F-HR on July 23, 2025 disclosing 2,497 shares of The Hanover Insurance Group, Inc.. The current value of the position is $197,274 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.

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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)
2025-11-07 2025-09-30 13F HANOVER INS GROUP COM 410867105 1,055 -1,442 -57.75 0 0.0193
2025-07-23 2025-06-30 13F HANOVER INS GROUP COM 410867105 2,497 -438 -14.92 0 0.0146
2025-05-14 2025-03-31 13F HANOVER INS GROUP COM 410867105 2,935 -260 -8.14 1 0.0243
2025-02-14 2024-12-31 13F HANOVER INS GROUP COM 410867105 3,195 -4 -0.13 0 0.0216
2024-11-07 2024-09-30 13F HANOVER INS GROUP COM 410867105 3,199 464 16.97 0 0.0209
2024-07-25 2024-03-31 13F HANOVER INS GROUP COM 410867105 2,735 -278 -9.23 0 0.0156
2024-02-14 2023-12-31 13F HANOVER INS GROUP COM 410867105 3,013 -897 -22.94 0 0.0169
2023-11-08 2023-09-30 13F HANOVER INS GROUP COM 410867105 3,910 -67 -1.68 0 0.0179
2023-07-28 2023-06-30 13F HANOVER INS GROUP COM 410867105 3,977 -23 -0.57 0 0.0177
2023-05-15 2023-03-31 13F HANOVER INS GROUP COM 410867105 4,000 -14 -0.35 1 0.0213
2023-02-07 2022-12-31 13F HANOVER INS GROUP COM 410867105 4,014 -968 -19.43 1 -100.00 0.0237
2022-11-14 2022-09-30 13F HANOVER INS GROUP COM 410867105 4,982 -1,293 -20.61 638 -30.50 0.0249
2022-08-09 2022-06-30 13F HANOVER INS GROUP COM 410867105 6,275 19 0.30 918 -1.82 0.0272
2022-05-04 2022-03-31 13F HANOVER INS GROUP COM 410867105 6,256 -914 -12.75 935 -0.53 0.0221
2022-02-09 2021-12-31 13F HANOVER INS GROUP COM 410867105 7,170 29 0.41 940 1.51 0.0193
2021-11-04 2021-09-30 13F HANOVER INS GROUP COM 410867105 7,141 -320 -4.29 926 -8.50 0.0208
2021-08-12 2021-06-30 13F HANOVER INS GROUP COM 410867105 7,461 390 5.52 1,012 10.60 0.0196
2021-05-10 2021-03-31 13F HANOVER INS GROUP COM 410867105 7,071 -50 -0.70 915 9.84 0.0183
2021-02-16 2020-12-31 13F HANOVER INS GROUP COM 410867105 7,121 0 0.00 833 25.45 0.0172
2020-11-13 2020-09-30 13F HANOVER INS GROUP COM 410867105 7,121 0 0.00 664 -8.03 0.0154
2020-08-10 2020-06-30 13F HANOVER INS GROUP COM 410867105 7,121 -839 -10.54 722 0.14 0.0180
2020-05-11 2020-03-31 13F HANOVER INS GROUP COM 410867105 7,960 -119 -1.47 721 -34.69 0.0201
2020-02-13 2019-12-31 13F HANOVER INS GROUP COM 410867105 8,079 -158 -1.92 1,104 -1.08 0.0238
2019-11-12 2019-09-30 13F HANOVER INS GROUP COM 410867105 8,237 -73 -0.88 1,116 4.69 0.0255
2019-08-12 2019-06-30 13F HANOVER INS GROUP COM 410867105 8,310 -187 -2.20 1,066 9.90 0.0236
2019-05-09 2019-03-31 13F HANOVER INS GROUP COM 410867105 8,497 0 0.00 970 -2.22 0.0214
2019-02-13 2018-12-31 13F HANOVER INS GROUP COM 410867105 8,497 -700 -7.61 992 -12.60 0.0247
2018-11-13 2018-09-30 13F HANOVER INS GROUP COM 410867105 9,197 0 0.00 1,135 3.18 0.0224
2018-08-10 2018-06-30 13F HANOVER INS GROUP COM 410867105 9,197 -486 -5.02 1,100 -3.68 0.0226
2018-05-14 2018-03-31 13F HANOVER INS GROUP COM 410867105 9,683 0 0.00 1,142 9.07 0.0227
2018-02-09 2017-12-31 13F HANOVER INS GROUP COM 410867105 9,683 0 0.00 1,047 11.50 0.0208
2017-10-20 2017-09-30 13F/A-1 HANOVER INS GROUP COM 410867105 9,683 -200 -2.02 939 7.19 0.0209
2017-10-18 2017-09-30 13F HANOVER INS GROUP COM 410867105 37,756 27,873 2,319
2017-07-26 2017-06-30 13F HANOVER INS GROUP COM 410867105 9,883 0 0.00 876 -1.57 0.0217
2017-04-26 2017-03-31 13F HANOVER INS GROUP COM 410867105 9,883 -20,188 -67.13 890 -67.48 0.0227
2017-01-10 2016-12-31 13F HANOVER INS GROUP COM 410867105 30,071 -265 -0.87 2,737 19.62 0.0740
2016-10-28 2016-09-30 13F HANOVER INS GROUP COM 410867105 30,336 -1,388 -4.38 2,288 -14.75 0.0548
2016-07-25 2016-06-30 13F HANOVER INS GROUP COM 410867105 31,724 -1,803 -5.38 2,684 -11.27 0.0623
2016-05-11 2016-03-31 13F HANOVER INS GROUP COM 410867105 33,527 -2,005 -5.64 3,025 4.67 0.0724
2016-02-05 2015-12-31 13F HANOVER INS GROUP COM 410867105 35,532 -2,224 -5.89 2,890 24.62 0.0682
2015-10-13 2015-09-30 13F HANOVER INS GROUP COM 410867105 37,756 1,762 4.90 2,319 -12.98 0.0367
2015-07-30 2015-06-30 13F HANOVER INS GROUP COM 410867105 35,994 -1,651 -4.39 2,665 -2.45 0.0533
2015-05-07 2015-03-31 13F HANOVER INS GROUP COM 410867105 37,645 37,645 0.00 2,732 0.0476
2015-02-04 2014-12-31 13F HANOVER INS GROUP COM 410867105 0 -37,756 -100.00 0 -100.00
2014-10-24 2014-09-30 13F HANOVER INS GROUP COM 410867105 37,756 3,526 10.30 2,319 7.26 0.0360
2014-08-08 2014-06-30 13F HANOVER INS GROUP COM 410867105 34,230 -398 -1.15 2,162 1.60 0.0333
2014-05-07 2014-03-31 13F HANOVER INS GROUP COM 410867105 34,628 34,628 2,128 0.0354
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.