{"transactions":[{"id":777819,"issuer":{"id":3652,"kind":"organization","name":"HANOVER INSURANCE GROUP, INC.","symbol":"THG"},"owners":[{"id":47047,"kind":"person","name":"Lowsley Denise","position":1,"cik":"0001572984","reported_name":"Lowsley Denise","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock Option (right to buy)","published_at":"2026-05-15T20:22:20.000Z","date":"2026-05-14","kind":"exercise","planned":false,"acquired":false,"shares":4175,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The option, representing the right to purchase a total of 4,175 shares, vested 1/3 on each of 2/26/2022, 2/26/2023 and 2/26/2024."}],"balance_after":0,"derivative":{"exercise_price":115.35,"expiration_date":"2031-02-26","underlying":"Common Stock","underlying_shares":4175},"source":{"system":"sec-edgar","filing":"0001572984-26-000005","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/944695/000157298426000005/ownership.xml","form_type":"4"}},{"id":777818,"issuer":{"id":3652,"kind":"organization","name":"HANOVER INSURANCE GROUP, INC.","symbol":"THG"},"owners":[{"id":47047,"kind":"person","name":"Lowsley Denise","position":1,"cik":"0001572984","reported_name":"Lowsley Denise","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2026-05-15T20:22:20.000Z","date":"2026-05-14","kind":"sale","planned":false,"acquired":false,"shares":4175,"price":191.73,"value":800472.75,"ownership":{"direct":true},"balance_after":3882.513,"source":{"system":"sec-edgar","filing":"0001572984-26-000005","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/944695/000157298426000005/ownership.xml","form_type":"4"}},{"id":777817,"issuer":{"id":3652,"kind":"organization","name":"HANOVER INSURANCE GROUP, INC.","symbol":"THG"},"owners":[{"id":47047,"kind":"person","name":"Lowsley Denise","position":1,"cik":"0001572984","reported_name":"Lowsley Denise","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2026-05-15T20:22:20.000Z","date":"2026-05-14","kind":"exercise","planned":false,"acquired":true,"shares":4175,"price":115.35,"value":481586.25,"ownership":{"direct":true},"balance_after":8057.513,"source":{"system":"sec-edgar","filing":"0001572984-26-000005","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/944695/000157298426000005/ownership.xml","form_type":"4"}},{"id":785525,"issuer":{"id":3652,"kind":"organization","name":"HANOVER INSURANCE GROUP, INC.","symbol":"THG"},"owners":[{"id":47047,"kind":"person","name":"Lowsley Denise","position":1,"cik":"0001572984","reported_name":"Lowsley Denise","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2026-05-11T20:09:37.000Z","date":"2026-05-08","kind":"sale","planned":false,"acquired":false,"shares":1062,"price":188.43,"value":200112.66,"ownership":{"direct":true},"balance_after":3882.513,"source":{"system":"sec-edgar","filing":"0001572984-26-000002","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/944695/000157298426000002/ownership.xml","form_type":"4"}},{"id":824658,"issuer":{"id":3652,"kind":"organization","name":"HANOVER INSURANCE GROUP, INC.","symbol":"THG"},"owners":[{"id":47047,"kind":"person","name":"Lowsley Denise","position":1,"cik":"0001572984","reported_name":"Lowsley Denise","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2026-03-31T20:12:46.000Z","date":"2026-03-27","kind":"grant","planned":false,"acquired":true,"shares":12.273,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Grant of restricted stock units (\"RSUs\") under the Issuer's 2022 Long-Term Incentive Plan (\"2022 LTIP\") in connection with the accrual of dividend equivalent rights associated with RSUs previously granted under the Issuer's 2022 LTIP. Such RSUs vest on the third anniversary of the date of grant of the original underlying RSUs."}],"balance_after":4944.513,"source":{"system":"sec-edgar","filing":"0001193125-26-134580","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/944695/000119312526134580/ownership.xml","form_type":"4"}},{"id":875314,"issuer":{"id":3652,"kind":"organization","name":"HANOVER INSURANCE GROUP, INC.","symbol":"THG"},"owners":[{"id":47047,"kind":"person","name":"Lowsley Denise","position":1,"cik":"0001572984","reported_name":"Lowsley Denise","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2026-03-02T23:44:32.000Z","date":"2026-02-27","kind":"tax_withholding","planned":false,"acquired":false,"shares":1207,"price":180.63,"value":218020.41,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Represents shares that were forfeited to pay withholding taxes upon the vesting of restricted stock units that were previously granted by the Issuer and vested on February 27, 2026. In connection with vesting, any fractional shares were rounded up to the next whole share in accordance with the terms of the award agreement."}],"balance_after":4932.24,"source":{"system":"sec-edgar","filing":"0001193125-26-086041","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/944695/000119312526086041/ownership.xml","form_type":"4"}},{"id":880470,"issuer":{"id":3652,"kind":"organization","name":"HANOVER INSURANCE GROUP, INC.","symbol":"THG"},"owners":[{"id":47047,"kind":"person","name":"Lowsley Denise","position":1,"cik":"0001572984","reported_name":"Lowsley Denise","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock Option (right to buy)","published_at":"2026-02-26T21:44:21.000Z","date":"2026-02-24","kind":"grant","planned":false,"acquired":true,"shares":3094,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"Such options vest as to one-third of the shares on each of the first three anniversaries of the grant date."}],"balance_after":3094,"derivative":{"exercise_price":173.56,"expiration_date":"2036-02-24","underlying":"Common Stock","underlying_shares":3094},"source":{"system":"sec-edgar","filing":"0001193125-26-076992","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/944695/000119312526076992/ownership.xml","form_type":"4"}},{"id":880469,"issuer":{"id":3652,"kind":"organization","name":"HANOVER INSURANCE GROUP, INC.","symbol":"THG"},"owners":[{"id":47047,"kind":"person","name":"Lowsley Denise","position":1,"cik":"0001572984","reported_name":"Lowsley Denise","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2026-02-26T21:44:21.000Z","date":"2026-02-24","kind":"grant","planned":false,"acquired":true,"shares":649,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F4","text":"Grant of restricted stock units under the Issuer's 2022 LTIP. Such units vest on the third anniversary of the date of grant."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes 68 shares acquired pursuant to The Hanover Insurance Group Inc.'s 2023 Employee Stock Purchase Plan on December 31, 2025."}],"balance_after":6138.34,"source":{"system":"sec-edgar","filing":"0001193125-26-076992","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/944695/000119312526076992/ownership.xml","form_type":"4"}},{"id":880468,"issuer":{"id":3652,"kind":"organization","name":"HANOVER INSURANCE GROUP, INC.","symbol":"THG"},"owners":[{"id":47047,"kind":"person","name":"Lowsley Denise","position":1,"cik":"0001572984","reported_name":"Lowsley Denise","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2026-02-26T21:44:21.000Z","date":"2026-02-24","kind":"grant","planned":false,"acquired":true,"shares":744,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F3","text":"On February 27, 2023, the Reporting Person was granted PBRSUs pursuant to the Issuer's 2022 LTIP. These PBRSUs were subject to a performance-based vesting condition related to three-year relative total shareholder return and a time-based vesting condition, and also provided for the accumulation of dividend equivalent rights. On February 24, 2026, the performance condition for this award was certified at 100% of the target award (as adjusted for accumulated dividend equivalent rights). This award remains subject to the time-based vesting condition and will vest on February 27, 2026."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes 68 shares acquired pursuant to The Hanover Insurance Group Inc.'s 2023 Employee Stock Purchase Plan on December 31, 2025."}],"balance_after":5489.34,"source":{"system":"sec-edgar","filing":"0001193125-26-076992","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/944695/000119312526076992/ownership.xml","form_type":"4"}},{"id":880467,"issuer":{"id":3652,"kind":"organization","name":"HANOVER INSURANCE GROUP, INC.","symbol":"THG"},"owners":[{"id":47047,"kind":"person","name":"Lowsley Denise","position":1,"cik":"0001572984","reported_name":"Lowsley Denise","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2026-02-26T21:44:21.000Z","date":"2026-02-24","kind":"grant","planned":false,"acquired":true,"shares":1154,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"On February 27, 2023, the Reporting Person was granted performance-based restricted stock units (\"PBRSUs\") pursuant to the Issuer's 2022 Long-Term Incentive Plan (\"2022 LTIP\"). These PBRSUs were subject to a performance-based vesting condition related to three-year average adjusted return on equity and a time-based vesting condition, and also provided for the accumulation of dividend equivalent rights. On February 24, 2026, the performance condition for this award was certified at 150% of the target award (as adjusted for accumulated dividend equivalent rights). This award remains subject to the time-based vesting condition and will vest on February 27, 2026."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes 68 shares acquired pursuant to The Hanover Insurance Group Inc.'s 2023 Employee Stock Purchase Plan on December 31, 2025."}],"balance_after":4745.34,"source":{"system":"sec-edgar","filing":"0001193125-26-076992","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/944695/000119312526076992/ownership.xml","form_type":"4"}},{"id":958916,"issuer":{"id":3652,"kind":"organization","name":"HANOVER INSURANCE GROUP, INC.","symbol":"THG"},"owners":[{"id":47047,"kind":"person","name":"Lowsley Denise","position":1,"cik":"0001572984","reported_name":"Lowsley Denise","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2025-12-29T21:14:54.000Z","date":"2025-12-26","kind":"grant","planned":false,"acquired":true,"shares":11.844,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Grant of restricted stock units (\"RSUs\") under the Issuer's 2022 Long-Term Incentive Plan (\"2022 LTIP\") in connection with the accrual of dividend equivalent rights associated with RSUs previously granted under the Issuer's 2022 LTIP. Such RSUs vest on the third anniversary of the date of grant of the original underlying RSUs."}],"balance_after":3523.34,"source":{"system":"sec-edgar","filing":"0001193125-25-335345","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/944695/000119312525335345/ownership.xml","form_type":"4"}},{"id":1000921,"issuer":{"id":3652,"kind":"organization","name":"HANOVER INSURANCE GROUP, INC.","symbol":"THG"},"owners":[{"id":47047,"kind":"person","name":"Lowsley Denise","position":1,"cik":"0001572984","reported_name":"Lowsley Denise","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2025-11-13T21:54:21.000Z","date":"2025-11-12","kind":"sale","planned":false,"acquired":false,"shares":1619,"price":181.47,"value":293799.93,"ownership":{"direct":true},"balance_after":3511.496,"source":{"system":"sec-edgar","filing":"0001193125-25-280394","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/944695/000119312525280394/ownership.xml","form_type":"4"}},{"id":1030832,"issuer":{"id":3652,"kind":"organization","name":"HANOVER INSURANCE GROUP, INC.","symbol":"THG"},"owners":[{"id":47047,"kind":"person","name":"Lowsley Denise","position":1,"cik":"0001572984","reported_name":"Lowsley Denise","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2025-09-30T20:15:18.000Z","date":"2025-09-26","kind":"grant","planned":false,"acquired":true,"shares":11.468,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Grant of restricted stock units (\"RSUs\") under the Issuer's 2022 Long-Term Incentive Plan (\"2022 LTIP\") in connection with the accrual of dividend equivalent rights associated with RSUs previously granted under the Issuer's 2022 LTIP. Such RSUs vest on the third anniversary of the date of grant of the original underlying RSUs."}],"balance_after":5130.496,"source":{"system":"sec-edgar","filing":"0001193125-25-225058","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/944695/000119312525225058/ownership.xml","form_type":"4"}},{"id":1075418,"issuer":{"id":3652,"kind":"organization","name":"HANOVER INSURANCE GROUP, INC.","symbol":"THG"},"owners":[{"id":47047,"kind":"person","name":"Lowsley Denise","position":1,"cik":"0001572984","reported_name":"Lowsley Denise","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock Option (right to buy)","published_at":"2025-08-05T20:11:50.000Z","date":"2025-08-01","kind":"exercise","planned":false,"acquired":false,"shares":5626,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The option, representing the right to purchase a total of 5,626 shares, vested 1/3 on each of 2/28/21, 2/28/22 and 2/28/23."}],"balance_after":0,"derivative":{"exercise_price":118.54,"expiration_date":"2030-02-28","underlying":"Common Stock","underlying_shares":5626},"source":{"system":"sec-edgar","filing":"0000950170-25-103044","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/944695/000095017025103044/ownership.xml","form_type":"4"}},{"id":1075417,"issuer":{"id":3652,"kind":"organization","name":"HANOVER INSURANCE GROUP, INC.","symbol":"THG"},"owners":[{"id":47047,"kind":"person","name":"Lowsley Denise","position":1,"cik":"0001572984","reported_name":"Lowsley Denise","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2025-08-05T20:11:50.000Z","date":"2025-08-01","kind":"sale","planned":false,"acquired":false,"shares":5626,"price":168.15,"value":946011.9,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Includes 73 shares acquired pursuant to The Hanover Insurance Group Inc.'s 2023 Employee Stock Purchase Plan on June 30, 2025."}],"balance_after":5119.028,"source":{"system":"sec-edgar","filing":"0000950170-25-103044","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/944695/000095017025103044/ownership.xml","form_type":"4"}},{"id":1075416,"issuer":{"id":3652,"kind":"organization","name":"HANOVER INSURANCE GROUP, INC.","symbol":"THG"},"owners":[{"id":47047,"kind":"person","name":"Lowsley Denise","position":1,"cik":"0001572984","reported_name":"Lowsley Denise","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2025-08-05T20:11:50.000Z","date":"2025-08-01","kind":"exercise","planned":false,"acquired":true,"shares":5626,"price":118.54,"value":666906.04,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Includes 73 shares acquired pursuant to The Hanover Insurance Group Inc.'s 2023 Employee Stock Purchase Plan on June 30, 2025."}],"balance_after":10745.028,"source":{"system":"sec-edgar","filing":"0000950170-25-103044","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/944695/000095017025103044/ownership.xml","form_type":"4"}},{"id":1099610,"issuer":{"id":3652,"kind":"organization","name":"HANOVER INSURANCE GROUP, INC.","symbol":"THG"},"owners":[{"id":47047,"kind":"person","name":"Lowsley Denise","position":1,"cik":"0001572984","reported_name":"Lowsley Denise","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2025-06-30T21:02:28.000Z","date":"2025-06-27","kind":"grant","planned":false,"acquired":true,"shares":12.212,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Grant of restricted stock units (\"RSUs\") under the Issuer's 2022 Long-Term Incentive Plan (\"2022 LTIP\") in connection with the accrual of dividend equivalent rights associated with RSUs previously granted under the Issuer's 2022 LTIP. Such RSUs vest on the third anniversary of the date of grant of the original underlying RSUs."}],"balance_after":5046.028,"source":{"system":"sec-edgar","filing":"0000950170-25-091698","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/944695/000095017025091698/ownership.xml","form_type":"4"}},{"id":1187087,"issuer":{"id":3652,"kind":"organization","name":"HANOVER INSURANCE GROUP, INC.","symbol":"THG"},"owners":[{"id":47047,"kind":"person","name":"Lowsley Denise","position":1,"cik":"0001572984","reported_name":"Lowsley Denise","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2025-04-01T20:10:12.000Z","date":"2025-03-28","kind":"grant","planned":false,"acquired":true,"shares":11.788,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Grant of restricted stock units (\"RSUs\") under the Issuer's 2022 Long-Term Incentive Plan (\"2022 LTIP\") in connection with the accrual of dividend equivalent rights associated with RSUs previously granted under the Issuer's 2022 LTIP. Such RSUs vest on the third anniversary of the date of grant of the original underlying RSUs."}],"balance_after":5033.816,"source":{"system":"sec-edgar","filing":"0001062993-25-006643","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/944695/000106299325006643/form4.xml","form_type":"4"}},{"id":1237016,"issuer":{"id":3652,"kind":"organization","name":"HANOVER INSURANCE GROUP, INC.","symbol":"THG"},"owners":[{"id":47047,"kind":"person","name":"Lowsley Denise","position":1,"cik":"0001572984","reported_name":"Lowsley Denise","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2025-03-03T21:22:28.000Z","date":"2025-02-28","kind":"tax_withholding","planned":false,"acquired":false,"shares":832,"price":170.53,"value":141880.96,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Represents shares that were forfeited to pay withholding taxes upon the vesting of restricted stock units that were previously granted by the Issuer and vested on February 28, 2025. In connection with vesting, any fractional shares were rounded up to the next whole share in accordance with the terms of the award agreement."}],"balance_after":5022.028,"source":{"system":"sec-edgar","filing":"0001062993-25-004107","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/944695/000106299325004107/form4.xml","form_type":"4"}},{"id":1244127,"issuer":{"id":3652,"kind":"organization","name":"HANOVER INSURANCE GROUP, INC.","symbol":"THG"},"owners":[{"id":47047,"kind":"person","name":"Lowsley Denise","position":1,"cik":"0001572984","reported_name":"Lowsley Denise","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock Option (right to buy)","published_at":"2025-02-26T21:23:16.000Z","date":"2025-02-25","kind":"grant","planned":false,"acquired":true,"shares":3185,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"Such options vest as to one-third of the shares on each of the first three anniversaries of the grant date."}],"balance_after":3185,"derivative":{"exercise_price":161.82,"expiration_date":"2035-02-25","underlying":"Common Stock","underlying_shares":3185},"source":{"system":"sec-edgar","filing":"0001062993-25-003660","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/944695/000106299325003660/form4.xml","form_type":"4"}},{"id":1244126,"issuer":{"id":3652,"kind":"organization","name":"HANOVER INSURANCE GROUP, INC.","symbol":"THG"},"owners":[{"id":47047,"kind":"person","name":"Lowsley Denise","position":1,"cik":"0001572984","reported_name":"Lowsley Denise","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2025-02-26T21:23:16.000Z","date":"2025-02-25","kind":"grant","planned":false,"acquired":true,"shares":696,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F4","text":"Grant of restricted stock units under the Issuer's 2022 Long-Term Incentive Plan. Such units vest on the third anniversary of the date of grant."},{"field":"ownership.direct","element":"directOrIndirectOwnership","label":"F2","text":"Includes 80 shares acquired pursuant to The Hanover's Insurance Group Inc.'s 2023 Employee Stock Purchase Plan on December 31, 2025."}],"balance_after":5853.71,"source":{"system":"sec-edgar","filing":"0001062993-25-003660","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/944695/000106299325003660/form4.xml","form_type":"4"}},{"id":1244125,"issuer":{"id":3652,"kind":"organization","name":"HANOVER INSURANCE GROUP, INC.","symbol":"THG"},"owners":[{"id":47047,"kind":"person","name":"Lowsley Denise","position":1,"cik":"0001572984","reported_name":"Lowsley Denise","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2025-02-26T21:23:16.000Z","date":"2025-02-24","kind":"grant","planned":false,"acquired":true,"shares":166,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F3","text":"On February 28, 2022, the Reporting Person was granted PBRSUs pursuant to the Issuer's 2014 Long-Term Incentive Plan. These PBRSUs were subject to a performance-based vesting condition related to three-year relative total shareholder return and a time-based vesting condition and also provided for the accumulation of dividend equivalent rights. On February 24, 2025, the performance condition for this award was certified at 25% of the target award (as adjusted for accumulated dividend equivalent rights). This award remains subject to the time-based vesting condition and will vest on February 28, 2025."},{"field":"ownership.direct","element":"directOrIndirectOwnership","label":"F2","text":"Includes 80 shares acquired pursuant to The Hanover's Insurance Group Inc.'s 2023 Employee Stock Purchase Plan on December 31, 2025."}],"balance_after":5157.71,"source":{"system":"sec-edgar","filing":"0001062993-25-003660","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/944695/000106299325003660/form4.xml","form_type":"4"}},{"id":1244124,"issuer":{"id":3652,"kind":"organization","name":"HANOVER INSURANCE GROUP, INC.","symbol":"THG"},"owners":[{"id":47047,"kind":"person","name":"Lowsley Denise","position":1,"cik":"0001572984","reported_name":"Lowsley Denise","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2025-02-26T21:23:16.000Z","date":"2025-02-24","kind":"grant","planned":false,"acquired":true,"shares":905,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"On February 28, 2022, the Reporting Person was granted performance-based restricted stock units (\"PBRSUs\") pursuant to the Issuer's 2014 Long-Term Incentive Plan. These PBRSUs were subject to a performance-based vesting condition related to three-year average adjusted return on equity and a time-based vesting condition and also provided for the accumulation of dividend equivalent rights. On February 24, 2025, the performance condition for this award was certified at 125% of the target award (as adjusted for accumulated dividend equivalent rights). This award remains subject to the time-based vesting condition and will vest on February 28, 2025."},{"field":"ownership.direct","element":"directOrIndirectOwnership","label":"F2","text":"Includes 80 shares acquired pursuant to The Hanover's Insurance Group Inc.'s 2023 Employee Stock Purchase Plan on December 31, 2025."}],"balance_after":4991.71,"source":{"system":"sec-edgar","filing":"0001062993-25-003660","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/944695/000106299325003660/form4.xml","form_type":"4"}},{"id":1320657,"issuer":{"id":3652,"kind":"organization","name":"HANOVER INSURANCE GROUP, INC.","symbol":"THG"},"owners":[{"id":47047,"kind":"person","name":"Lowsley Denise","position":1,"cik":"0001572984","reported_name":"Lowsley Denise","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2024-12-30T21:08:56.000Z","date":"2024-12-27","kind":"grant","planned":false,"acquired":true,"shares":13.27,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Grant of restricted stock units (\"RSUs\") under the Issuer's 2022 Long-Term Incentive Plan (\"2022 LTIP\") in connection with the accrual of dividend equivalent rights associated with RSUs previously granted under the Issuer's 2022 LTIP or 2014 Long-Term Incentive Plan, as applicable. Such RSUs vest on the third anniversary of the date of grant of the original underlying RSUs."}],"balance_after":4006.71,"source":{"system":"sec-edgar","filing":"0001062993-24-021272","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/944695/000106299324021272/form4.xml","form_type":"4"}},{"id":1357775,"issuer":{"id":3652,"kind":"organization","name":"HANOVER INSURANCE GROUP, INC.","symbol":"THG"},"owners":[{"id":47047,"kind":"person","name":"Lowsley Denise","position":1,"cik":"0001572984","reported_name":"Lowsley Denise","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2024-11-20T21:37:10.000Z","date":"2024-11-19","kind":"sale","planned":false,"acquired":false,"shares":1823,"price":162.32,"value":295909.36,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The price reported in Column 4 is a weighted average price. The shares were sold at multiple prices ranging from $162.23 to $162.59. 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."}],"balance_after":3993.44,"source":{"system":"sec-edgar","filing":"0001062993-24-019405","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/944695/000106299324019405/form4.xml","form_type":"4"}},{"id":1398159,"issuer":{"id":3652,"kind":"organization","name":"HANOVER INSURANCE GROUP, INC.","symbol":"THG"},"owners":[{"id":47047,"kind":"person","name":"Lowsley Denise","position":1,"cik":"0001572984","reported_name":"Lowsley Denise","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2024-09-30T20:10:24.000Z","date":"2024-09-27","kind":"grant","planned":false,"acquired":true,"shares":13.086,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Grant of restricted stock units (\"RSUs\") under the Issuer's 2022 Long-Term Incentive Plan (\"2022 LTIP\") in connection with the accrual of dividend equivalent rights associated with RSUs previously granted under the Issuer's 2022 LTIP or 2014 Long-Term Incentive Plan, as applicable. Such RSUs vest on the third anniversary of the date of grant of the original underlying RSUs."}],"balance_after":5816.44,"source":{"system":"sec-edgar","filing":"0001062993-24-017074","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/944695/000106299324017074/form4.xml","form_type":"4"}},{"id":1466499,"issuer":{"id":3652,"kind":"organization","name":"HANOVER INSURANCE GROUP, INC.","symbol":"THG"},"owners":[{"id":47047,"kind":"person","name":"Lowsley Denise","position":1,"cik":"0001572984","reported_name":"Lowsley Denise","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2024-07-01T20:24:28.000Z","date":"2024-06-28","kind":"grant","planned":false,"acquired":true,"shares":15.227,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Grant of restricted stock units (\"RSUs\") under the Issuer's 2022 Long-Term Incentive Plan (\"2022 LTIP\") in connection with the accrual of dividend equivalent rights associated with RSUs previously granted under the Issuer's 2022 LTIP or 2014 Long-Term Incentive Plan, as applicable. Such RSUs vest on the third anniversary of the date of grant of the original underlying RSUs."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes 99 shares acquired pursuant to The Hanover Insurance Group Inc.'s 2023 Employee Stock Purchase Plan on June 28, 2024."}],"balance_after":5803.354,"source":{"system":"sec-edgar","filing":"0001062993-24-013184","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/944695/000106299324013184/form4.xml","form_type":"4"}},{"id":1556945,"issuer":{"id":3652,"kind":"organization","name":"HANOVER INSURANCE GROUP, INC.","symbol":"THG"},"owners":[{"id":47047,"kind":"person","name":"Lowsley Denise","position":1,"cik":"0001572984","reported_name":"Lowsley Denise","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2024-04-01T20:07:27.000Z","date":"2024-03-28","kind":"grant","planned":false,"acquired":true,"shares":13.94,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Grant of restricted stock units (\"RSUs\") under the Issuer's 2022 Long-Term Incentive Plan (\"2022 LTIP\") in connection with the accrual of dividend equivalent rights associated with RSUs previously granted under the Issuer's 2022 LTIP or 2014 Long-Term Incentive Plan, as applicable. Such RSUs vest on the third anniversary of the date of grant of the original underlying RSUs."}],"balance_after":5689.127,"source":{"system":"sec-edgar","filing":"0001062993-24-007568","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/944695/000106299324007568/form4.xml","form_type":"4"}},{"id":1613276,"issuer":{"id":3652,"kind":"organization","name":"HANOVER INSURANCE GROUP, INC.","symbol":"THG"},"owners":[{"id":47047,"kind":"person","name":"Lowsley Denise","position":1,"cik":"0001572984","reported_name":"Lowsley Denise","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock Option (right to buy)","published_at":"2024-02-28T21:02:05.000Z","date":"2024-02-27","kind":"grant","planned":false,"acquired":true,"shares":3523,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"Such options vest as to one-third of the shares on each of the first three anniversaries of the grant date."}],"balance_after":3523,"derivative":{"exercise_price":134.26,"expiration_date":"2034-02-27","underlying":"Common Stock","underlying_shares":3523},"source":{"system":"sec-edgar","filing":"0001062993-24-004724","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/944695/000106299324004724/form4.xml","form_type":"4"}},{"id":1613275,"issuer":{"id":3652,"kind":"organization","name":"HANOVER INSURANCE GROUP, INC.","symbol":"THG"},"owners":[{"id":47047,"kind":"person","name":"Lowsley Denise","position":1,"cik":"0001572984","reported_name":"Lowsley Denise","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2024-02-28T21:02:05.000Z","date":"2024-02-27","kind":"grant","planned":false,"acquired":true,"shares":792,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F4","text":"Grant of restricted stock units under the Issuer's 2022 Long-Term Incentive Plan. Such units vest on the third anniversary of the date of grant."}],"balance_after":5675.187,"source":{"system":"sec-edgar","filing":"0001062993-24-004724","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/944695/000106299324004724/form4.xml","form_type":"4"}},{"id":1613274,"issuer":{"id":3652,"kind":"organization","name":"HANOVER INSURANCE GROUP, INC.","symbol":"THG"},"owners":[{"id":47047,"kind":"person","name":"Lowsley Denise","position":1,"cik":"0001572984","reported_name":"Lowsley Denise","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2024-02-28T21:02:05.000Z","date":"2024-02-26","kind":"tax_withholding","planned":false,"acquired":false,"shares":742,"price":134.61,"value":99880.62,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F3","text":"Represents shares that were forfeited to pay withholding taxes upon the vesting of restricted stock units that were previously granted by the Issuer and vested on February 26, 2024.  In connection with vesting, any fractional shares were rounded up to the next whole share in accordance with the terms of the award agreement."}],"balance_after":4883.187,"source":{"system":"sec-edgar","filing":"0001062993-24-004724","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/944695/000106299324004724/form4.xml","form_type":"4"}},{"id":1613273,"issuer":{"id":3652,"kind":"organization","name":"HANOVER INSURANCE GROUP, INC.","symbol":"THG"},"owners":[{"id":47047,"kind":"person","name":"Lowsley Denise","position":1,"cik":"0001572984","reported_name":"Lowsley Denise","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2024-02-28T21:02:05.000Z","date":"2024-02-26","kind":"grant","planned":false,"acquired":true,"shares":633,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"On February 26, 2021, the Reporting Person was granted PBRSUs pursuant to the Issuer's 2014 Long-Term Incentive Plan. These PBRSUs were subject to a performance-based vesting condition related to three-year relative total shareholder return and a three-year time-based vesting condition, and also provided for the accumulation of dividend equivalent rights. On February 26, 2024, the performance condition for this award was certified at 72.73% of the target award (as adjusted for accumulated dividend equivalent rights), and vested and was paid."}],"balance_after":5624.9,"source":{"system":"sec-edgar","filing":"0001062993-24-004724","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/944695/000106299324004724/form4.xml","form_type":"4"}},{"id":1613272,"issuer":{"id":3652,"kind":"organization","name":"HANOVER INSURANCE GROUP, INC.","symbol":"THG"},"owners":[{"id":47047,"kind":"person","name":"Lowsley Denise","position":1,"cik":"0001572984","reported_name":"Lowsley Denise","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2024-02-28T21:02:05.000Z","date":"2024-02-26","kind":"grant","planned":false,"acquired":true,"shares":913,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"On February 26, 2021, the Reporting Person was granted performance-based restricted stock units (\"PBRSUs\") pursuant to the Issuer's 2014 Long-Term Incentive Plan. These PBRSUs were subject to a performance-based vesting condition related to three-year average adjusted return on equity and a three-year time-based vesting condition, and also provided for the accumulation of dividend equivalent rights. On February 26, 2024, the performance condition for this award was certified at 112% of the target award (as adjusted for accumulated dividend equivalent rights), and vested and was paid."}],"balance_after":4991.9,"source":{"system":"sec-edgar","filing":"0001062993-24-004724","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/944695/000106299324004724/form4.xml","form_type":"4"}},{"id":1694437,"issuer":{"id":3652,"kind":"organization","name":"HANOVER INSURANCE GROUP, INC.","symbol":"THG"},"owners":[{"id":47047,"kind":"person","name":"Lowsley Denise","position":1,"cik":"0001572984","reported_name":"Lowsley Denise","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2024-01-03T21:22:02.000Z","date":"2023-12-29","kind":"grant","planned":false,"acquired":true,"shares":15.683,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Grant of restricted stock units (\"RSUs\") under the Issuer's 2022 Long-Term Incentive Plan (\"2022 LTIP\") in connection with the accrual of dividend equivalent rights associated with RSUs previously granted under the Issuer's 2022 LTIP or 2014 Long-Term Incentive Plan, as applicable. Such RSUs vest on the third anniversary of the date of grant of the original underlying RSUs."}],"balance_after":4078.9,"source":{"system":"sec-edgar","filing":"0001062993-24-000196","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/944695/000106299324000196/form4.xml","form_type":"4"}},{"id":1768828,"issuer":{"id":3652,"kind":"organization","name":"HANOVER INSURANCE GROUP, INC.","symbol":"THG"},"owners":[{"id":47047,"kind":"person","name":"Lowsley Denise","position":1,"cik":"0001572984","reported_name":"Lowsley Denise","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2023-10-03T20:54:21.000Z","date":"2023-09-29","kind":"grant","planned":false,"acquired":true,"shares":16.232,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Grant of restricted stock units (\"RSUs\") under the Issuer's 2022 Long-Term Incentive Plan (\"2022 LTIP\") in connection with the accrual of dividend equivalent rights associated with RSUs previously granted under the Issuer's 2022 LTIP or 2014 Long-Term Incentive Plan, as applicable. Such RSUs vest on the third anniversary of the date of grant of the original underlying RSUs."}],"balance_after":4063.217,"source":{"system":"sec-edgar","filing":"0001062993-23-018872","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/944695/000106299323018872/form4.xml","form_type":"4"}},{"id":1840150,"issuer":{"id":3652,"kind":"organization","name":"HANOVER INSURANCE GROUP, INC.","symbol":"THG"},"owners":[{"id":47047,"kind":"person","name":"Lowsley Denise","position":1,"cik":"0001572984","reported_name":"Lowsley Denise","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2023-07-03T20:25:18.000Z","date":"2023-06-30","kind":"grant","planned":false,"acquired":true,"shares":15.824,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Grant of restricted stock units (\"RSUs\") under the Issuer's 2022 Long-Term Incentive Plan (\"2022 LTIP\") in connection with the accrual of dividend equivalent rights associated with RSUs previously granted under the Issuer's 2022 LTIP or 2014 Long-Term Incentive Plan, as applicable. Such RSUs vest on the third anniversary of the date of grant of the original underlying RSUs."}],"balance_after":4046.985,"source":{"system":"sec-edgar","filing":"0001062993-23-014332","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/944695/000106299323014332/form4.xml","form_type":"4"}},{"id":1930104,"issuer":{"id":3652,"kind":"organization","name":"HANOVER INSURANCE GROUP, INC.","symbol":"THG"},"owners":[{"id":47047,"kind":"person","name":"Lowsley Denise","position":1,"cik":"0001572984","reported_name":"Lowsley Denise","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2023-04-04T20:33:11.000Z","date":"2023-03-31","kind":"grant","planned":false,"acquired":true,"shares":13.832,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Grant of restricted stock units under the Issuer's 2014 Long-Term Incentive Plan or the 2022 Long-Term Incentive Plan, as applicable, upon the accrual of dividend rights associated with restricted stock units previously granted by the Issuer. Such units vest on the third anniversary of the date of grant of the underlying restricted stock units."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Due to a clerical error, the number reported in column 5 of the Form 4 filed on March 1, 2023 was overstated by 0.063 shares. All other line items in the Form 4 filed on March 1, 2023 are correct. The amount of securities beneficially owned by the reporting person reported in column 5 of this Form 4 corrects the previous error."}],"balance_after":4031.161,"source":{"system":"sec-edgar","filing":"0001062993-23-008531","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/944695/000106299323008531/form4.xml","form_type":"4"}},{"id":1984794,"issuer":{"id":3652,"kind":"organization","name":"HANOVER INSURANCE GROUP, INC.","symbol":"THG"},"owners":[{"id":47047,"kind":"person","name":"Lowsley Denise","position":1,"cik":"0001572984","reported_name":"Lowsley Denise","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock Option (right to buy)","published_at":"2023-03-01T22:52:37.000Z","date":"2023-02-27","kind":"grant","acquired":true,"shares":3170,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"Such options vest as to one-third of the shares on each of the first three anniversaries of the grant date."}],"balance_after":3170,"derivative":{"exercise_price":140.01,"expiration_date":"2033-02-27","underlying":"Common Stock","underlying_shares":3170},"source":{"system":"sec-edgar","filing":"0001062993-23-005393","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/944695/000106299323005393/form4.xml","form_type":"4"}},{"id":1984793,"issuer":{"id":3652,"kind":"organization","name":"HANOVER INSURANCE GROUP, INC.","symbol":"THG"},"owners":[{"id":47047,"kind":"person","name":"Lowsley Denise","position":1,"cik":"0001572984","reported_name":"Lowsley Denise","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2023-03-01T22:52:37.000Z","date":"2023-02-27","kind":"tax_withholding","acquired":false,"shares":752,"price":139.48,"value":104888.96,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F4","text":"Represents shares that were forfeited to pay withholding taxes upon the vesting of restricted stock units that were previously granted by the Issuer and vested on February 28, 2023.  In connection with vesting, any fractional shares were rounded up to the next whole share in accordance with the terms of the award agreement."}],"balance_after":4017.392,"source":{"system":"sec-edgar","filing":"0001062993-23-005393","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/944695/000106299323005393/form4.xml","form_type":"4"}},{"id":1984792,"issuer":{"id":3652,"kind":"organization","name":"HANOVER INSURANCE GROUP, INC.","symbol":"THG"},"owners":[{"id":47047,"kind":"person","name":"Lowsley Denise","position":1,"cik":"0001572984","reported_name":"Lowsley Denise","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2023-03-01T22:52:37.000Z","date":"2023-02-27","kind":"grant","acquired":true,"shares":715,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F3","text":"Grant of restricted stock units under the Issuer's 2022 Long-Term Incentive Plan. Such units vest on the third anniversary of the date of grant."}],"balance_after":4769.132,"source":{"system":"sec-edgar","filing":"0001062993-23-005393","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/944695/000106299323005393/form4.xml","form_type":"4"}},{"id":1984791,"issuer":{"id":3652,"kind":"organization","name":"HANOVER INSURANCE GROUP, INC.","symbol":"THG"},"owners":[{"id":47047,"kind":"person","name":"Lowsley Denise","position":1,"cik":"0001572984","reported_name":"Lowsley Denise","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2023-03-01T22:52:37.000Z","date":"2023-02-27","kind":"grant","acquired":true,"shares":701,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"On February 28, 2020, the Reporting Person was granted 751 (target) PBRSUs pursuant to the Issuer's 2014 Long-Term Incentive Plan. These PBRSUs were subject to a performance-based vesting condition related to three-year relative total shareholder return and a time-based vesting condition and also provided for the accumulation of dividend equivalent rights. On February 27, 2023, the performance condition for this award was certified at 86.96% of the target award (as adjusted for accumulated dividend equivalent rights) for the number of shares indicated. This award remained subject to the time-based vesting condition and vested on February 28, 2023."}],"balance_after":4054.132,"source":{"system":"sec-edgar","filing":"0001062993-23-005393","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/944695/000106299323005393/form4.xml","form_type":"4"}},{"id":1984790,"issuer":{"id":3652,"kind":"organization","name":"HANOVER INSURANCE GROUP, INC.","symbol":"THG"},"owners":[{"id":47047,"kind":"person","name":"Lowsley Denise","position":1,"cik":"0001572984","reported_name":"Lowsley Denise","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2023-03-01T22:52:37.000Z","date":"2023-02-27","kind":"grant","acquired":true,"shares":956,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"On February 28, 2020, the Reporting Person was granted 685 (target) performance-based restricted stock units (\"PBRSUs\") pursuant to the Issuer's 2014 Long-Term Incentive Plan. These PBRSUs were subject to a performance-based vesting condition related to three-year average adjusted return on equity and a time-based vesting condition and also provided for the accumulation of dividend equivalent rights. On February 27, 2023, the performance condition for this award was certified at 130% of the target award (as adjusted for accumulated dividend equivalent rights) for the number of shares indicated. This award remained subject to the time-based vesting condition and vested on February 28, 2023."}],"balance_after":3353.132,"source":{"system":"sec-edgar","filing":"0001062993-23-005393","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/944695/000106299323005393/form4.xml","form_type":"4"}},{"id":2070007,"issuer":{"id":3652,"kind":"organization","name":"HANOVER INSURANCE GROUP, INC.","symbol":"THG"},"owners":[{"id":47047,"kind":"person","name":"Lowsley Denise","position":1,"cik":"0001572984","reported_name":"Lowsley Denise","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2023-01-04T21:54:02.000Z","date":"2022-12-30","kind":"grant","acquired":true,"shares":13.193,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Grant of restricted stock units under the Issuer's 2022 Long-Term Incentive Plan upon the accrual of dividend rights associated with restricted stock units previously granted by the Issuer. Such units vest on the third anniversary of the date of grant of the underlying restricted stock units."}],"balance_after":2397.132,"source":{"system":"sec-edgar","filing":"0001062993-23-000330","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/944695/000106299323000330/form4.xml","form_type":"4"}},{"id":2145828,"issuer":{"id":3652,"kind":"organization","name":"HANOVER INSURANCE GROUP, INC.","symbol":"THG"},"owners":[{"id":47047,"kind":"person","name":"Lowsley Denise","position":1,"cik":"0001572984","reported_name":"Lowsley Denise","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2022-10-04T20:32:16.000Z","date":"2022-09-30","kind":"grant","acquired":true,"shares":12.807,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Grant of restricted stock units under the Issuer's 2022 Long-Term Incentive Plan upon the accrual of dividend rights associated with restricted stock units previously granted by the Issuer. Such units vest on the third anniversary of the date of grant of the underlying restricted stock units."}],"balance_after":2383.939,"source":{"system":"sec-edgar","filing":"0001062993-22-020338","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/944695/000106299322020338/form4.xml","form_type":"4"}},{"id":2220495,"issuer":{"id":3652,"kind":"organization","name":"HANOVER INSURANCE GROUP, INC.","symbol":"THG"},"owners":[{"id":47047,"kind":"person","name":"Lowsley Denise","position":1,"cik":"0001572984","reported_name":"Lowsley Denise","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2022-06-28T20:01:03.000Z","date":"2022-06-24","kind":"grant","acquired":true,"shares":11.032,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Grant of restricted stock units under the Issuer's 2022 Long-Term Incentive Plan upon the accrual of dividend rights associated with restricted stock units previously granted by the Issuer. Such units vest on the third anniversary of the date of grant of the underlying restricted stock units."}],"balance_after":2371.132,"source":{"system":"sec-edgar","filing":"0001062993-22-015562","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/944695/000106299322015562/form4.xml","form_type":"4"}},{"id":2315858,"issuer":{"id":3652,"kind":"organization","name":"HANOVER INSURANCE GROUP, INC.","symbol":"THG"},"owners":[{"id":47047,"kind":"person","name":"Lowsley Denise","position":1,"cik":"0001572984","reported_name":"Lowsley Denise","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2022-03-29T21:44:38.000Z","date":"2022-03-25","kind":"grant","acquired":true,"shares":10.845,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Grant of restricted stock units under the Issuer's 2014 Long-Term Incentive Plan upon the accrual of dividend rights associated with restricted stock units previously granted by the Issuer. Such units vest on the third anniversary of the date of grant of the underlying restricted stock units."}],"balance_after":2360.1,"source":{"system":"sec-edgar","filing":"0001062993-22-008925","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/944695/000106299322008925/form4.xml","form_type":"4"}},{"id":2362429,"issuer":{"id":3652,"kind":"organization","name":"HANOVER INSURANCE GROUP, INC.","symbol":"THG"},"owners":[{"id":47047,"kind":"person","name":"Lowsley Denise","position":1,"cik":"0001572984","reported_name":"Lowsley Denise","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock Option (right to buy)","published_at":"2022-03-02T21:03:39.000Z","date":"2022-02-28","kind":"grant","acquired":true,"shares":3285,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Such options vest as to one-third of the shares on each of the first three anniversaries of the grant date."}],"balance_after":3285,"derivative":{"exercise_price":139.51,"expiration_date":"2032-02-28","underlying":"Common Stock","underlying_shares":3285},"source":{"system":"sec-edgar","filing":"0001062993-22-006303","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/944695/000106299322006303/form4.xml","form_type":"4"}},{"id":2362428,"issuer":{"id":3652,"kind":"organization","name":"HANOVER INSURANCE GROUP, INC.","symbol":"THG"},"owners":[{"id":47047,"kind":"person","name":"Lowsley Denise","position":1,"cik":"0001572984","reported_name":"Lowsley Denise","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2022-03-02T21:03:39.000Z","date":"2022-02-28","kind":"grant","acquired":true,"shares":672,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Grant of restricted stock units under the Issuer's 2014 Long-Term Incentive Plan. Such units vest on the third anniversary of the date of grant."}],"balance_after":2349.255,"source":{"system":"sec-edgar","filing":"0001062993-22-006303","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/944695/000106299322006303/form4.xml","form_type":"4"}},{"id":2451467,"issuer":{"id":3652,"kind":"organization","name":"HANOVER INSURANCE GROUP, INC.","symbol":"THG"},"owners":[{"id":47047,"kind":"person","name":"Lowsley Denise","position":1,"cik":"0001572984","reported_name":"Lowsley Denise","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2022-01-04T20:15:04.000Z","date":"2021-12-30","kind":"grant","acquired":true,"shares":8.458,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Grant of restricted stock units under the Issuer's 2014 Long-Term Incentive Plan upon the accrual of dividend rights associated with restricted stock units previously granted by the Issuer. Such units vest on the third anniversary of the date of grant of the underlying restricted stock units."}],"balance_after":1677.255,"source":{"system":"sec-edgar","filing":"0001062993-22-000190","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/944695/000106299322000190/form4.xml","form_type":"4"}},{"id":2559231,"issuer":{"id":3652,"kind":"organization","name":"HANOVER INSURANCE GROUP, INC.","symbol":"THG"},"owners":[{"id":47047,"kind":"person","name":"Lowsley Denise","position":1,"cik":"0001572984","reported_name":"Lowsley Denise","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2021-09-27T15:00:32.000Z","date":"2021-09-24","kind":"grant","acquired":true,"shares":7.773,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Grant of restricted stock units under the Issuer's 2014 Long-Term Incentive Plan upon the accrual of dividend rights associated with restricted stock units previously granted by the Issuer. Such units vest on the third anniversary of the date of grant of the underlying restricted stock units."}],"balance_after":1668.797,"source":{"system":"sec-edgar","filing":"0001062993-21-008938","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/944695/000106299321008938/form4.xml","form_type":"4"}},{"id":2652489,"issuer":{"id":3652,"kind":"organization","name":"HANOVER INSURANCE GROUP, INC.","symbol":"THG"},"owners":[{"id":47047,"kind":"person","name":"Lowsley Denise","position":1,"cik":"0001572984","reported_name":"Lowsley Denise","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2021-06-29T18:02:52.000Z","date":"2021-06-25","kind":"grant","acquired":true,"shares":7.451,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Grant of restricted stock units under the Issuer's 2014 Long-Term Incentive Plan upon the accrual of dividend rights associated with restricted stock units previously granted by the Issuer. Such units vest on the third anniversary of the date of grant of the underlying restricted stock units."}],"balance_after":1661.024,"source":{"system":"sec-edgar","filing":"0001062993-21-006072","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/944695/000106299321006072/form4.xml","form_type":"4"}},{"id":2768535,"issuer":{"id":3652,"kind":"organization","name":"HANOVER INSURANCE GROUP, INC.","symbol":"THG"},"owners":[{"id":47047,"kind":"person","name":"Lowsley Denise","position":1,"cik":"0001572984","reported_name":"Lowsley Denise","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2021-03-30T14:33:58.000Z","date":"2021-03-26","kind":"grant","acquired":true,"shares":7.809,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Grant of restricted stock units under the Issuer's 2014 Long-Term Incentive Plan upon the accrual of dividend rights associated with restricted stock units previously granted by the Issuer. Such units vest on the third anniversary of the date of grant of the underlying restricted stock units."}],"balance_after":1653.573,"source":{"system":"sec-edgar","filing":"0000944695-21-000080","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/944695/000094469521000080/edgar.xml","form_type":"4"}},{"id":2822519,"issuer":{"id":3652,"kind":"organization","name":"HANOVER INSURANCE GROUP, INC.","symbol":"THG"},"owners":[{"id":47047,"kind":"person","name":"Lowsley Denise","position":1,"cik":"0001572984","reported_name":"Lowsley Denise","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock Option (right to buy)","published_at":"2021-03-02T22:58:59.000Z","date":"2021-02-26","kind":"grant","acquired":true,"shares":4175,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Such options vest as to one-third of the shares on each of the first three anniversaries of the grant date."}],"balance_after":4175,"derivative":{"exercise_price":115.35,"expiration_date":"2031-02-26","underlying":"Common Stock","underlying_shares":4175},"source":{"system":"sec-edgar","filing":"0000944695-21-000052","document":"edgar.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/944695/000094469521000052/edgar.xml","form_type":"4"}},{"id":2822518,"issuer":{"id":3652,"kind":"organization","name":"HANOVER INSURANCE GROUP, INC.","symbol":"THG"},"owners":[{"id":47047,"kind":"person","name":"Lowsley Denise","position":1,"cik":"0001572984","reported_name":"Lowsley Denise","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2021-03-02T22:58:59.000Z","date":"2021-03-01","kind":"grant","acquired":true,"shares":759,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Grant of restricted stock units under the Issuer's 2014 Long-Term Incentive Plan. Such units vest on the third anniversary of the date of grant."}],"balance_after":1645.764,"source":{"system":"sec-edgar","filing":"0000944695-21-000052","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/944695/000094469521000052/edgar.xml","form_type":"4"}},{"id":2926365,"issuer":{"id":3652,"kind":"organization","name":"HANOVER INSURANCE GROUP, INC.","symbol":"THG"},"owners":[{"id":47047,"kind":"person","name":"Lowsley Denise","position":1,"cik":"0001572984","reported_name":"Lowsley Denise","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2021-01-04T16:49:41.000Z","date":"2020-12-30","kind":"grant","acquired":true,"shares":4.217,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Grant of restricted stock units under the Issuer's 2014 Long-Term Incentive Plan upon the accrual of dividend rights associated with restricted stock units previously granted by the Issuer. Such units vest on the third anniversary of the date of grant of the underlying restricted stock units."}],"balance_after":886.764,"source":{"system":"sec-edgar","filing":"0000944695-21-000016","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/944695/000094469521000016/edgar.xml","form_type":"4"}},{"id":3021140,"issuer":{"id":3652,"kind":"organization","name":"HANOVER INSURANCE GROUP, INC.","symbol":"THG"},"owners":[{"id":47047,"kind":"person","name":"Lowsley Denise","position":1,"cik":"0001572984","reported_name":"Lowsley Denise","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2020-09-29T14:29:17.000Z","date":"2020-09-25","kind":"grant","acquired":true,"shares":4.984,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Grant of restricted stock units under the Issuer's 2014 Long-Term Incentive Plan upon the accrual of dividend rights associated with restricted stock units previously granted by the Issuer. Such units vest on the third anniversary of the date of grant of the underlying restricted stock units."}],"balance_after":882.547,"source":{"system":"sec-edgar","filing":"0000944695-20-000169","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/944695/000094469520000169/edgar.xml","form_type":"4"}},{"id":3086994,"issuer":{"id":3652,"kind":"organization","name":"HANOVER INSURANCE GROUP, INC.","symbol":"THG"},"owners":[{"id":47047,"kind":"person","name":"Lowsley Denise","position":1,"cik":"0001572984","reported_name":"Lowsley Denise","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2020-07-08T18:37:46.000Z","date":"2020-06-30","kind":"grant","acquired":true,"shares":183,"price":91.197,"value":16689.051,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Purchase of shares pursuant to The Hanover Insurance Group Inc.'s 2014 Employee Stock Purchase Plan."}],"balance_after":877.563,"source":{"system":"sec-edgar","filing":"0000944695-20-000143","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/944695/000094469520000143/edgar.xml","form_type":"4"}},{"id":3097905,"issuer":{"id":3652,"kind":"organization","name":"HANOVER INSURANCE GROUP, INC.","symbol":"THG"},"owners":[{"id":47047,"kind":"person","name":"Lowsley Denise","position":1,"cik":"0001572984","reported_name":"Lowsley Denise","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2020-06-30T00:14:00.000Z","date":"2020-06-26","kind":"grant","acquired":true,"shares":4.678,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Grant of restricted stock units under the Issuer's 2014 Long-Term Incentive Plan upon the accrual of dividend rights associated with restricted stock units previously granted by the Issuer. Such units vest on the third anniversary of the date of grant of the underlying restricted stock units."}],"balance_after":694.563,"source":{"system":"sec-edgar","filing":"0000944695-20-000136","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/944695/000094469520000136/edgar.xml","form_type":"4"}},{"id":3192416,"issuer":{"id":3652,"kind":"organization","name":"HANOVER INSURANCE GROUP, INC.","symbol":"THG"},"owners":[{"id":47047,"kind":"person","name":"Lowsley Denise","position":1,"cik":"0001572984","reported_name":"Lowsley Denise","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2020-03-30T20:33:57.000Z","date":"2020-03-27","kind":"grant","acquired":true,"shares":4.885,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Grant of restricted stock units under the Issuer's 2014 Long-Term Incentive Plan upon the accrual of dividend rights associated with restricted stock units previously granted by the Issuer. Such units vest on the third anniversary of the date of grant of the underlying restricted stock units."}],"balance_after":689.885,"source":{"system":"sec-edgar","filing":"0000944695-20-000082","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/944695/000094469520000082/edgar.xml","form_type":"4"}},{"id":3234597,"issuer":{"id":3652,"kind":"organization","name":"HANOVER INSURANCE GROUP, INC.","symbol":"THG"},"owners":[{"id":47047,"kind":"person","name":"Lowsley Denise","position":1,"cik":"0001572984","reported_name":"Lowsley Denise","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock Option (right to buy)","published_at":"2020-03-03T21:10:36.000Z","date":"2020-02-28","kind":"grant","acquired":true,"shares":5626,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Such options vest as to one-third of the shares on each of the first three anniversaries of the grant date."}],"balance_after":5626,"derivative":{"exercise_price":118.54,"expiration_date":"2030-02-28","underlying":"Common Stock","underlying_shares":5626},"source":{"system":"sec-edgar","filing":"0000944695-20-000058","document":"edgar.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/944695/000094469520000058/edgar.xml","form_type":"4"}},{"id":3234596,"issuer":{"id":3652,"kind":"organization","name":"HANOVER INSURANCE GROUP, INC.","symbol":"THG"},"owners":[{"id":47047,"kind":"person","name":"Lowsley Denise","position":1,"cik":"0001572984","reported_name":"Lowsley Denise","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Vice President"}}],"security":"Common Stock","published_at":"2020-03-03T21:10:36.000Z","date":"2020-02-28","kind":"grant","acquired":true,"shares":685,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Grant of restricted stock units under the Issuer's 2014 Long-Term Incentive Plan. Such units vest on the third anniversary of the date of grant."}],"balance_after":685,"source":{"system":"sec-edgar","filing":"0000944695-20-000058","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/944695/000094469520000058/edgar.xml","form_type":"4"}},{"id":3514194,"issuer":{"id":157253,"kind":"organization","name":"NAVIGATORS GROUP INC","symbol":"NAVG"},"owners":[{"id":47047,"kind":"person","name":"Lowsley Denise","position":1,"cik":"0001572984","reported_name":"Lowsley Denise","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Chief HR Officer"}}],"security":"Restricted Stock Units","published_at":"2019-05-23T19:36:54.000Z","date":"2019-05-23","kind":"disposition_to_issuer","acquired":false,"shares":1250,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F5","text":"Each restricted stock unit represents the right to receive one share of Issuer Common Stock."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"The Merger Agreement provides that each restricted stock unit award granted on or after January 1, 2019 that was outstanding immediately prior to the Effective Time and was payable in Issuer Common Stock (together, the \"2019 New Company Awards\"), was canceled and converted into the right to receive a number of restricted stock units issued pursuant to The Hartford 2014 Incentive Stock Plan (each, a \"Hartford RSU\") in respect of shares of common stock, par value $0.01 per share, of The Hartford (\"Hartford Common Stock\") equal to (A) the Merger Consideration multiplied by the number of restricted stock units in the applicable tranche, subject to the 2019 New Company Award immediately prior to the Effective Time, divided by (B) the closing price of a share of Hartford Common Stock on the New York Stock Exchange on the business day immediately prior to the closing of the Merger."},{"field":"price","element":"transactionPricePerShare","label":"F7","text":"Each Hartford RSU issued pursuant to Footnote 6 will be subject to the same vesting and payment schedules as the 2019 New Company Award it replaced (other than performance-based vesting conditions)."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F6","text":"The Merger Agreement provides that each restricted stock unit award granted on or after January 1, 2019 that was outstanding immediately prior to the Effective Time and was payable in Issuer Common Stock (together, the \"2019 New Company Awards\"), was canceled and converted into the right to receive a number of restricted stock units issued pursuant to The Hartford 2014 Incentive Stock Plan (each, a \"Hartford RSU\") in respect of shares of common stock, par value $0.01 per share, of The Hartford (\"Hartford Common Stock\") equal to (A) the Merger Consideration multiplied by the number of restricted stock units in the applicable tranche, subject to the 2019 New Company Award immediately prior to the Effective Time, divided by (B) the closing price of a share of Hartford Common Stock on the New York Stock Exchange on the business day immediately prior to the closing of the Merger."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F7","text":"Each Hartford RSU issued pursuant to Footnote 6 will be subject to the same vesting and payment schedules as the 2019 New Company Award it replaced (other than performance-based vesting conditions)."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F6","text":"The Merger Agreement provides that each restricted stock unit award granted on or after January 1, 2019 that was outstanding immediately prior to the Effective Time and was payable in Issuer Common Stock (together, the \"2019 New Company Awards\"), was canceled and converted into the right to receive a number of restricted stock units issued pursuant to The Hartford 2014 Incentive Stock Plan (each, a \"Hartford RSU\") in respect of shares of common stock, par value $0.01 per share, of The Hartford (\"Hartford Common Stock\") equal to (A) the Merger Consideration multiplied by the number of restricted stock units in the applicable tranche, subject to the 2019 New Company Award immediately prior to the Effective Time, divided by (B) the closing price of a share of Hartford Common Stock on the New York Stock Exchange on the business day immediately prior to the closing of the Merger."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F7","text":"Each Hartford RSU issued pursuant to Footnote 6 will be subject to the same vesting and payment schedules as the 2019 New Company Award it replaced (other than performance-based vesting conditions)."}],"balance_after":0,"derivative":{"underlying":"Common Stock","underlying_shares":1250},"source":{"system":"sec-edgar","filing":"0001209191-19-032515","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/793547/000120919119032515/doc4.xml","form_type":"4"}},{"id":3514193,"issuer":{"id":157253,"kind":"organization","name":"NAVIGATORS GROUP INC","symbol":"NAVG"},"owners":[{"id":47047,"kind":"person","name":"Lowsley Denise","position":1,"cik":"0001572984","reported_name":"Lowsley Denise","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Chief HR Officer"}}],"security":"Performance Units","published_at":"2019-05-23T19:36:54.000Z","date":"2019-05-23","kind":"disposition_to_issuer","acquired":false,"shares":6500,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"Each performance unit represents the right to receive one share of Issuer Common Stock."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"The Merger Agreement provides that each performance unit award granted on or after January 1, 2017 and prior to January 1, 2019, that was granted under the Company Stock Plan (as defined in the Merger Agreement) and that was outstanding immediately prior to the Effective Time and is payable in shares of Issuer Common Stock (together, the \"2020 Vesting Company Awards\") was canceled and converted into the right to receive a cash payment equal to the product of (A) the Merger Consideration multiplied by (B) the target number of shares of Issuer Common Stock that were subject to the 2020 Vesting Company Awards immediately prior to the Effective Time; provided, that the right to a cash payment with respect to such award was subject to the same vesting and payment schedules as the 2020 Vesting Company Award it replaced (other than performance-based vesting conditions)."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"The Merger Agreement provides that each performance unit award granted on or after January 1, 2017 and prior to January 1, 2019, that was granted under the Company Stock Plan (as defined in the Merger Agreement) and that was outstanding immediately prior to the Effective Time and is payable in shares of Issuer Common Stock (together, the \"2020 Vesting Company Awards\") was canceled and converted into the right to receive a cash payment equal to the product of (A) the Merger Consideration multiplied by (B) the target number of shares of Issuer Common Stock that were subject to the 2020 Vesting Company Awards immediately prior to the Effective Time; provided, that the right to a cash payment with respect to such award was subject to the same vesting and payment schedules as the 2020 Vesting Company Award it replaced (other than performance-based vesting conditions)."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"The Merger Agreement provides that each performance unit award granted on or after January 1, 2017 and prior to January 1, 2019, that was granted under the Company Stock Plan (as defined in the Merger Agreement) and that was outstanding immediately prior to the Effective Time and is payable in shares of Issuer Common Stock (together, the \"2020 Vesting Company Awards\") was canceled and converted into the right to receive a cash payment equal to the product of (A) the Merger Consideration multiplied by (B) the target number of shares of Issuer Common Stock that were subject to the 2020 Vesting Company Awards immediately prior to the Effective Time; provided, that the right to a cash payment with respect to such award was subject to the same vesting and payment schedules as the 2020 Vesting Company Award it replaced (other than performance-based vesting conditions)."}],"balance_after":0,"derivative":{"underlying":"Common Stock","underlying_shares":6500},"source":{"system":"sec-edgar","filing":"0001209191-19-032515","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/793547/000120919119032515/doc4.xml","form_type":"4"}},{"id":3514192,"issuer":{"id":157253,"kind":"organization","name":"NAVIGATORS GROUP INC","symbol":"NAVG"},"owners":[{"id":47047,"kind":"person","name":"Lowsley Denise","position":1,"cik":"0001572984","reported_name":"Lowsley Denise","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Chief HR Officer"}}],"security":"Common Stock","published_at":"2019-05-23T19:36:54.000Z","date":"2019-05-23","kind":"disposition_to_issuer","acquired":false,"shares":26416,"price":70,"value":1849120.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"On May 23,  2019, The Hartford Financial Services Group, Inc. (\"The Hartford\") acquired the Issuer pursuant to the Agreement and Plan of Merger (the \"Merger Agreement\"), dated as of August 22, 2018, by and among the Issuer, The Hartford and Renato Acquisition Co., a wholly owned subsidiary of The Hartford (the \"Merger\")."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Pursuant to the Merger Agreement, at the effective time of the Merger (the \"Effective Time\"), each share of common stock of the Issuer, par value $0.10 per share (\"Issuer Common Stock\") issued and outstanding immediately prior to the Effective Time was converted into the right to receive $70.00 in cash, without interest (the \"Merger Consideration\")."}],"balance_after":0,"source":{"system":"sec-edgar","filing":"0001209191-19-032515","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/793547/000120919119032515/doc4.xml","form_type":"4"}},{"id":3605237,"issuer":{"id":157253,"kind":"organization","name":"NAVIGATORS GROUP INC","symbol":"NAVG"},"owners":[{"id":47047,"kind":"person","name":"Lowsley Denise","position":1,"cik":"0001572984","reported_name":"Lowsley Denise","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Chief HR Officer"}}],"security":"Restricted Stock Units","published_at":"2019-03-08T17:09:05.000Z","date":"2019-03-06","kind":"grant","acquired":true,"shares":1250,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each restricted stock unit represents a contingent right to receive the closing price of one share of NAVG common stock as of the date of vesting."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Restricted stock units vesting on March 1, 2022, subject to the Reporting Person's continued employment with the Issuer."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Restricted stock units vesting on March 1, 2022, subject to the Reporting Person's continued employment with the Issuer."}],"balance_after":1250,"derivative":{"underlying":"Common Stock","underlying_shares":1250},"source":{"system":"sec-edgar","filing":"0001209191-19-018185","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/793547/000120919119018185/doc4.xml","form_type":"4"}},{"id":3621207,"issuer":{"id":157253,"kind":"organization","name":"NAVIGATORS GROUP INC","symbol":"NAVG"},"owners":[{"id":47047,"kind":"person","name":"Lowsley Denise","position":1,"cik":"0001572984","reported_name":"Lowsley Denise","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Chief HR Officer"}}],"security":"Common Stock","published_at":"2019-03-04T09:42:51.000Z","date":"2019-02-28","kind":"tax_withholding","acquired":false,"shares":2120,"price":69.78,"value":147933.6,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F3","text":"Shares withheld to satisfy tax obligation arising out of vesting of performance units."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Excludes unvested shares of stock awards over which the Reporting Person does not have voting or dispositive control."}],"balance_after":26416,"source":{"system":"sec-edgar","filing":"0001209191-19-015309","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/793547/000120919119015309/doc4.xml","form_type":"4"}},{"id":3621206,"issuer":{"id":157253,"kind":"organization","name":"NAVIGATORS GROUP INC","symbol":"NAVG"},"owners":[{"id":47047,"kind":"person","name":"Lowsley Denise","position":1,"cik":"0001572984","reported_name":"Lowsley Denise","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Chief HR Officer"}}],"security":"Common Stock","published_at":"2019-03-04T09:42:51.000Z","date":"2019-02-28","kind":"grant","acquired":true,"shares":4662,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Vesting of performance units grant, which was previously reported."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Excludes unvested shares of stock awards over which the Reporting Person does not have voting or dispositive control."}],"balance_after":28536,"source":{"system":"sec-edgar","filing":"0001209191-19-015309","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/793547/000120919119015309/doc4.xml","form_type":"4"}},{"id":4002155,"issuer":{"id":157253,"kind":"organization","name":"NAVIGATORS GROUP INC","symbol":"NAVG"},"owners":[{"id":47047,"kind":"person","name":"Lowsley Denise","position":1,"cik":"0001572984","reported_name":"Lowsley Denise","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Chief HR Officer"}}],"security":"Performance Units","published_at":"2018-03-12T15:29:51.000Z","date":"2018-03-08","kind":"grant","acquired":true,"shares":3000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each performance unit represents a contingent right to receive the closing price of one share of NAVG common stock as of the date of vesting."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Performance units vesting on March 2, 2021, subject to the Reporting Person's continued employment. The number of performance units that will vest, which can range from 50% to 150% of the performance units reported on this Form 4, depends on the attainment of certain performance targets over a three-year period ending December 31, 2020."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Performance units vesting on March 2, 2021, subject to the Reporting Person's continued employment. The number of performance units that will vest, which can range from 50% to 150% of the performance units reported on this Form 4, depends on the attainment of certain performance targets over a three-year period ending December 31, 2020."}],"balance_after":3000,"derivative":{"underlying":"Common Stock","underlying_shares":3000},"source":{"system":"sec-edgar","filing":"0001209191-18-018804","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/793547/000120919118018804/doc4.xml","form_type":"4"}},{"id":4009367,"issuer":{"id":157253,"kind":"organization","name":"NAVIGATORS GROUP INC","symbol":"NAVG"},"owners":[{"id":47047,"kind":"person","name":"Lowsley Denise","position":1,"cik":"0001572984","reported_name":"Lowsley Denise","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Chief HR Officer"}}],"security":"Performance Units","published_at":"2018-03-07T14:11:16.000Z","date":"2018-03-05","kind":"exercise","acquired":false,"shares":6000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F4","text":"Vested in a range from 50% to 150% based on the attainment of certain performance targets over a three-year period ending December 31, 2017, which vesting is reported in this Form 4."},{"field":"shares","element":"transactionShares","label":"F5","text":"The grant was previously reported as for 3,000 performance units, but was adjusted to reflect the stock dividend declared by the Board of Directors of the Issuer on December 6, 2016."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"Vested in a range from 50% to 150% based on the attainment of certain performance targets over a three-year period ending December 31, 2017, which vesting is reported in this Form 4."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"Vested in a range from 50% to 150% based on the attainment of certain performance targets over a three-year period ending December 31, 2017, which vesting is reported in this Form 4."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F4","text":"Vested in a range from 50% to 150% based on the attainment of certain performance targets over a three-year period ending December 31, 2017, which vesting is reported in this Form 4."}],"balance_after":0,"derivative":{"underlying":"Common Stock"},"source":{"system":"sec-edgar","filing":"0001209191-18-017632","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/793547/000120919118017632/doc4.xml","form_type":"4"}},{"id":4009366,"issuer":{"id":157253,"kind":"organization","name":"NAVIGATORS GROUP INC","symbol":"NAVG"},"owners":[{"id":47047,"kind":"person","name":"Lowsley Denise","position":1,"cik":"0001572984","reported_name":"Lowsley Denise","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Chief HR Officer"}}],"security":"Common Stock","published_at":"2018-03-07T14:11:16.000Z","date":"2018-03-05","kind":"tax_withholding","acquired":false,"shares":2093,"price":55.65,"value":116475.45,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F3","text":"Shares withheld to satisfy tax obligation arising out of vesting of performance units."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Excludes unvested shares of stock awards over which the Reporting Person does not have voting or dispositive control."}],"balance_after":23383,"source":{"system":"sec-edgar","filing":"0001209191-18-017632","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/793547/000120919118017632/doc4.xml","form_type":"4"}},{"id":4009365,"issuer":{"id":157253,"kind":"organization","name":"NAVIGATORS GROUP INC","symbol":"NAVG"},"owners":[{"id":47047,"kind":"person","name":"Lowsley Denise","position":1,"cik":"0001572984","reported_name":"Lowsley Denise","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Chief HR Officer"}}],"security":"Common Stock","published_at":"2018-03-07T14:11:16.000Z","date":"2018-03-05","kind":"grant","acquired":true,"shares":4572,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Vesting of performance units grant, which was previously reported."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Excludes unvested shares of stock awards over which the Reporting Person does not have voting or dispositive control."}],"balance_after":25476,"source":{"system":"sec-edgar","filing":"0001209191-18-017632","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/793547/000120919118017632/doc4.xml","form_type":"4"}},{"id":4399075,"issuer":{"id":157253,"kind":"organization","name":"NAVIGATORS GROUP INC","symbol":"NAVG"},"owners":[{"id":47047,"kind":"person","name":"Lowsley Denise","position":1,"cik":"0001572984","reported_name":"Lowsley Denise","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Chief HR Officer"}}],"security":"Performance Units","published_at":"2017-03-07T14:26:56.000Z","date":"2017-03-03","kind":"grant","acquired":true,"shares":3500,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each performance unit represents a contingent right to receive the closing price of one share of NAVG common stock as of the date of vesting."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Performance units vesting on March 3, 2020, subject to the Reporting Person's continued employment.  The number of performance units that will vest, which can range from 50% to 150% of the performance units reported on this Form 4, depends on the attainment of certain performance targets over a three-year period ending December 31, 2019."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Performance units vesting on March 3, 2020, subject to the Reporting Person's continued employment.  The number of performance units that will vest, which can range from 50% to 150% of the performance units reported on this Form 4, depends on the attainment of certain performance targets over a three-year period ending December 31, 2019."}],"balance_after":3500,"derivative":{"underlying":"Common Stock","underlying_shares":3500},"source":{"system":"sec-edgar","filing":"0001209191-17-018644","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/793547/000120919117018644/doc4.xml","form_type":"4"}},{"id":4433635,"issuer":{"id":157253,"kind":"organization","name":"NAVIGATORS GROUP INC","symbol":"NAVG"},"owners":[{"id":47047,"kind":"person","name":"Lowsley Denise","position":1,"cik":"0001572984","reported_name":"Lowsley Denise","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Chief HR Officer"}}],"security":"Common Stock","published_at":"2017-02-22T15:48:00.000Z","date":"2017-02-20","kind":"tax_withholding","acquired":false,"shares":4781,"price":55.85,"value":267018.85,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F3","text":"Shares withheld to satisfy tax obligation arising out of vesting of performance units."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Excludes unvested shares of stock awards over which the Reporting Person does not have voting or dispositive control."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F4","text":"On December 6, 2016, the Board of Directors of the Issuer declared a stock dividend, payable to all holders of record of common stock on December 30, 2016, of one share of common stock for each share of common stock outstanding. As a result, the reported amount of securities beneficially owned includes 7,271 shares that the Reporting Person received on January 20, 2017."}],"balance_after":20471,"source":{"system":"sec-edgar","filing":"0001209191-17-013135","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/793547/000120919117013135/doc4.xml","form_type":"4"}},{"id":4433634,"issuer":{"id":157253,"kind":"organization","name":"NAVIGATORS GROUP INC","symbol":"NAVG"},"owners":[{"id":47047,"kind":"person","name":"Lowsley Denise","position":1,"cik":"0001572984","reported_name":"Lowsley Denise","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Chief HR Officer"}}],"security":"Common Stock","published_at":"2017-02-22T15:48:00.000Z","date":"2017-02-20","kind":"grant","acquired":true,"shares":10710,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Vesting of performance units grant."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Excludes unvested shares of stock awards over which the Reporting Person does not have voting or dispositive control."}],"balance_after":25252,"source":{"system":"sec-edgar","filing":"0001209191-17-013135","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/793547/000120919117013135/doc4.xml","form_type":"4"}}]}