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Each dividend equivalent unit is the economic equivalent of one share of Selective Insurance Group, Inc. common stock."}],"balance_after":21137.0749,"source":{"system":"sec-edgar","filing":"0001225208-26-004816","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/230557/000122520826004816/doc4.xml","form_type":"4"}},{"id":1160306,"issuer":{"id":3856,"kind":"organization","name":"SELECTIVE INSURANCE GROUP INC","symbol":"SIGI"},"owners":[{"id":50121,"kind":"person","name":"Nicholson Cynthia S","position":1,"cik":"0001470648","reported_name":"Nicholson Cynthia S","relationship":{"director":true}}],"security":"Common Stock","published_at":"2025-05-05T20:04:04.000Z","date":"2025-05-02","kind":"grant","planned":false,"acquired":true,"shares":1426,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The award of 1,426 restricted stock units will vest on May 2, 2026."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes 18.18590 dividend equivalent units.  Each dividend equivalent unit is the economic equivalent of one share of Selective Insurance Group, Inc. common stock."}],"balance_after":19341.5957,"source":{"system":"sec-edgar","filing":"0001225208-25-004660","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/230557/000122520825004660/doc4.xml","form_type":"4"}},{"id":1526974,"issuer":{"id":3856,"kind":"organization","name":"SELECTIVE INSURANCE GROUP INC","symbol":"SIGI"},"owners":[{"id":50121,"kind":"person","name":"Nicholson Cynthia S","position":1,"cik":"0001470648","reported_name":"Nicholson Cynthia S","relationship":{"director":true}}],"security":"Common Stock","published_at":"2024-05-06T20:21:07.000Z","date":"2024-05-03","kind":"grant","planned":false,"acquired":true,"shares":1141,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The award of 1,141 restricted stock units will vest on May 3, 2025."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes 10.54940 dividend equivalent units.  Each dividend equivalent unit is the economic equivalent of one share of Selective Insurance Group, Inc. common stock."}],"balance_after":17897.4098,"source":{"system":"sec-edgar","filing":"0001225208-24-005666","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/230557/000122520824005666/doc4.xml","form_type":"4"}},{"id":1801287,"issuer":{"id":3856,"kind":"organization","name":"SELECTIVE INSURANCE GROUP INC","symbol":"SIGI"},"owners":[{"id":50121,"kind":"person","name":"Nicholson Cynthia S","position":1,"cik":"0001470648","reported_name":"Nicholson Cynthia S","relationship":{"director":true}}],"security":"Common Stock","published_at":"2023-08-21T20:04:03.000Z","date":"2023-08-18","kind":"sale","planned":false,"acquired":false,"shares":3020,"price":101.51,"value":306560.2,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Represents the weighted average sale price.  The highest price at which shares were sold was $101.85 and the lowest price at which shares were sold was $101.08.  The reporting person hereby undertakes to provide upon request to the SEC's staff, the issuer or its security holders, full information regarding the number of shares sold at each separate price."}],"balance_after":16745.8604,"source":{"system":"sec-edgar","filing":"0001225208-23-008374","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/230557/000122520823008374/doc4.xml","form_type":"4"}},{"id":1804774,"issuer":{"id":3856,"kind":"organization","name":"SELECTIVE INSURANCE GROUP INC","symbol":"SIGI"},"owners":[{"id":50121,"kind":"person","name":"Nicholson Cynthia S","position":1,"cik":"0001470648","reported_name":"Nicholson Cynthia S","relationship":{"director":true}}],"security":"Common Stock","published_at":"2023-08-17T20:09:31.000Z","date":"2023-08-16","kind":"sale","planned":false,"acquired":false,"shares":980,"price":101.8588,"value":99821.624,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Represents the weighted average sale price.  The highest price at which shares were sold was $101.95 and the lowest price at which shares were sold was $101.41.  The reporting person hereby undertakes to provide upon request to the SEC's staff, the issuer or its security holders, full information regarding the number of shares sold at each separate price."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes 3.2476 dividend equivalent units.  Each dividend equivalent unit is the economic equivalent of one share of Selective Insurance Group, Inc. common stock."}],"balance_after":19765.8604,"source":{"system":"sec-edgar","filing":"0001225208-23-008319","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/230557/000122520823008319/doc4.xml","form_type":"4"}},{"id":1874010,"issuer":{"id":3856,"kind":"organization","name":"SELECTIVE INSURANCE GROUP INC","symbol":"SIGI"},"owners":[{"id":50121,"kind":"person","name":"Nicholson Cynthia S","position":1,"cik":"0001470648","reported_name":"Nicholson Cynthia S","relationship":{"director":true}}],"security":"Common Stock","published_at":"2023-05-31T20:06:48.000Z","date":"2023-05-30","kind":"sale","planned":false,"acquired":false,"shares":1187,"price":99.4375,"value":118032.3125,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Represents the weighted average sale price.  The highest price at which shares were sold was $100.05 and the lowest price at which shares were sold was $98.81.  The reporting person hereby undertakes to provide upon request to the SEC's staff, the issuer or its security holders, full information regarding the number of shares sold at each separate price."}],"balance_after":20742.6128,"source":{"system":"sec-edgar","filing":"0001225208-23-006285","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/230557/000122520823006285/doc4.xml","form_type":"4"}},{"id":1901763,"issuer":{"id":3856,"kind":"organization","name":"SELECTIVE INSURANCE GROUP INC","symbol":"SIGI"},"owners":[{"id":50121,"kind":"person","name":"Nicholson Cynthia S","position":1,"cik":"0001470648","reported_name":"Nicholson Cynthia S","relationship":{"director":true}}],"security":"Common Stock","published_at":"2023-05-08T20:18:16.000Z","date":"2023-05-05","kind":"grant","planned":false,"acquired":true,"shares":2033,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Includes the award of 1,065 restricted stock units that will vest on May 5, 2024."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes 11.3821 dividend equivalent units.  Each dividend equivalent unit is the economic equivalent of one share of Selective Insurance Group, Inc. common stock."}],"balance_after":21929.6128,"source":{"system":"sec-edgar","filing":"0001225208-23-005579","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/230557/000122520823005579/doc4.xml","form_type":"4"}},{"id":2180310,"issuer":{"id":3856,"kind":"organization","name":"SELECTIVE INSURANCE GROUP INC","symbol":"SIGI"},"owners":[{"id":50121,"kind":"person","name":"Nicholson Cynthia S","position":1,"cik":"0001470648","reported_name":"Nicholson Cynthia S","relationship":{"director":true}}],"security":"Common Stock","published_at":"2022-08-18T20:03:28.000Z","date":"2022-08-16","kind":"sale","acquired":false,"shares":6600,"price":83.2289,"value":549310.74,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Represents the weighted average sale price.  The highest price at which shares were sold was $83.47 and the lowest price at which shares were sold was $83.07.  The reporting person hereby undertakes to provide upon request to the SEC's staff, the issuer or its security holders, full information regarding the number of shares sold at each separate price."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes 4.2232 dividend equivalent units.   Each dividend equivalent unit is the economic equivalent of one share of Selective Insurance Group, Inc. common stock."}],"balance_after":19885.2307,"source":{"system":"sec-edgar","filing":"0001225208-22-009655","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/230557/000122520822009655/doc4.xml","form_type":"4"}},{"id":2278601,"issuer":{"id":3856,"kind":"organization","name":"SELECTIVE INSURANCE GROUP INC","symbol":"SIGI"},"owners":[{"id":50121,"kind":"person","name":"Nicholson Cynthia S","position":1,"cik":"0001470648","reported_name":"Nicholson Cynthia S","relationship":{"director":true}}],"security":"Common Stock","published_at":"2022-05-09T22:00:22.000Z","date":"2022-05-06","kind":"grant","acquired":true,"shares":2282,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Includes the award of 1,172 restricted stock units that will vest on May 6, 2023."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes 14.0650 dividend equivalent units.  Each dividend equivalent unit is the economic equivalent of one share of Selective Insurance Group, Inc. common stock."}],"balance_after":26481.0075,"source":{"system":"sec-edgar","filing":"0001225208-22-006744","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/230557/000122520822006744/doc4.xml","form_type":"4"}},{"id":2733787,"issuer":{"id":3856,"kind":"organization","name":"SELECTIVE INSURANCE GROUP INC","symbol":"SIGI"},"owners":[{"id":50121,"kind":"person","name":"Nicholson Cynthia S","position":1,"cik":"0001470648","reported_name":"Nicholson Cynthia S","relationship":{"director":true}}],"security":"Common Stock","published_at":"2021-05-03T20:09:05.000Z","date":"2021-04-30","kind":"grant","acquired":true,"shares":2168,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Includes the award of 1,051 restricted stock units that will vest on April 30, 2022."}],"balance_after":24184.9425,"source":{"system":"sec-edgar","filing":"0001225208-21-007379","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/230557/000122520821007379/doc4.xml","form_type":"4"}},{"id":2804586,"issuer":{"id":3856,"kind":"organization","name":"SELECTIVE INSURANCE GROUP INC","symbol":"SIGI"},"owners":[{"id":50121,"kind":"person","name":"Nicholson Cynthia S","position":1,"cik":"0001470648","reported_name":"Nicholson Cynthia S","relationship":{"director":true}}],"security":"Common Stock","published_at":"2021-03-08T21:07:16.000Z","date":"2021-03-08","kind":"sale","acquired":false,"shares":1454,"price":74.08,"value":107712.32,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Represents the weighted average sale price.  The highest price at which shares were sold was $74.085 and the lowest price at which shares were sold was $74.0536.  The reporting person hereby undertakes to provide upon request to the SEC's staff, the issuer or its security holders, full information regarding the number of shares sold at each separate price."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes 22.8151 dividend equivalent units.   Each dividend equivalent unit is the economic equivalent of one share of Selective Insurance Group, Inc. common stock."}],"balance_after":22016.9425,"source":{"system":"sec-edgar","filing":"0001225208-21-004847","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/230557/000122520821004847/doc4.xml","form_type":"4"}},{"id":3157467,"issuer":{"id":3856,"kind":"organization","name":"SELECTIVE INSURANCE GROUP INC","symbol":"SIGI"},"owners":[{"id":50121,"kind":"person","name":"Nicholson Cynthia S","position":1,"cik":"0001470648","reported_name":"Nicholson Cynthia S","relationship":{"director":true}}],"security":"Common Stock","published_at":"2020-05-08T20:07:18.000Z","date":"2020-05-07","kind":"grant","acquired":true,"shares":3575,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Includes the award of 1,733 restricted stock units that will vest on May 7, 2021."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes 4.326 dividend equivalent units.   Each dividend equivalent unit is the economic equivalent of one share of Selective Insurance Group, Inc. common stock."}],"balance_after":23448.1274,"source":{"system":"sec-edgar","filing":"0001225208-20-007254","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/230557/000122520820007254/doc4.xml","form_type":"4"}},{"id":3285701,"issuer":{"id":3856,"kind":"organization","name":"SELECTIVE INSURANCE GROUP INC","symbol":"SIGI"},"owners":[{"id":50121,"kind":"person","name":"Nicholson Cynthia S","position":1,"cik":"0001470648","reported_name":"Nicholson Cynthia S","relationship":{"director":true}}],"security":"Stock Option","published_at":"2020-02-07T21:03:10.000Z","date":"2020-02-06","kind":"exercise","acquired":false,"shares":5964,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":0,"derivative":{"exercise_price":16.71,"exercise_date":"2011-04-30","expiration_date":"2020-04-30","underlying":"Common Stock","underlying_shares":5964},"source":{"system":"sec-edgar","filing":"0001225208-20-001805","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/230557/000122520820001805/doc4.xml","form_type":"4"}},{"id":3285700,"issuer":{"id":3856,"kind":"organization","name":"SELECTIVE INSURANCE GROUP INC","symbol":"SIGI"},"owners":[{"id":50121,"kind":"person","name":"Nicholson Cynthia S","position":1,"cik":"0001470648","reported_name":"Nicholson Cynthia S","relationship":{"director":true}}],"security":"Common Stock","published_at":"2020-02-07T21:03:10.000Z","date":"2020-02-06","kind":"sale","acquired":false,"shares":5964,"price":68.0655,"value":405942.642,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Represents the weighted average sale price.  The highest price at which shares were sold was $68.25 and the lowest price at which shares were sold was $67.88.  The reporting person hereby undertakes to provide upon request to the SEC's staff, the issuer or its security holders, full information regarding the number of shares sold at each separate price."}],"balance_after":19868.8014,"source":{"system":"sec-edgar","filing":"0001225208-20-001805","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/230557/000122520820001805/doc4.xml","form_type":"4"}},{"id":3285699,"issuer":{"id":3856,"kind":"organization","name":"SELECTIVE INSURANCE GROUP INC","symbol":"SIGI"},"owners":[{"id":50121,"kind":"person","name":"Nicholson Cynthia S","position":1,"cik":"0001470648","reported_name":"Nicholson Cynthia S","relationship":{"director":true}}],"security":"Common Stock","published_at":"2020-02-07T21:03:10.000Z","date":"2020-02-06","kind":"exercise","acquired":true,"shares":5964,"price":16.71,"value":99658.44,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Includes 9.9322 dividend equivalent units.   Each dividend equivalent unit is the economic equivalent of one share of Selective Insurance Group, Inc. common stock."}],"balance_after":25832.8014,"source":{"system":"sec-edgar","filing":"0001225208-20-001805","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/230557/000122520820001805/doc4.xml","form_type":"4"}},{"id":3532692,"issuer":{"id":3856,"kind":"organization","name":"SELECTIVE INSURANCE GROUP INC","symbol":"SIGI"},"owners":[{"id":50121,"kind":"person","name":"Nicholson Cynthia S","position":1,"cik":"0001470648","reported_name":"Nicholson Cynthia S","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2019-05-10T21:06:58.000Z","date":"2019-05-08","kind":"sale","acquired":false,"shares":1468,"price":71.1147,"value":104396.3796,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Represents the weighted average sale price. The highest price at which shares were sold was $71.12 and the lowest price at which shares were sold was $71.10.  The reporting person hereby undertakes to provide upon request to the SEC's staff, the issuer or its security holders, full information regarding number of shares sold at each separate price."}],"balance_after":19858.8692,"source":{"system":"sec-edgar","filing":"0001223203-19-000032","document":"primary_doc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/230557/000122320319000032/primary_doc.xml","form_type":"4"}},{"id":3537217,"issuer":{"id":3856,"kind":"organization","name":"SELECTIVE INSURANCE GROUP INC","symbol":"SIGI"},"owners":[{"id":50121,"kind":"person","name":"Nicholson Cynthia S","position":1,"cik":"0001470648","reported_name":"Nicholson Cynthia S","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Option","published_at":"2019-05-07T22:05:38.000Z","date":"2019-05-03","kind":"exercise","acquired":false,"shares":1989,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":5964,"derivative":{"exercise_price":16.71,"exercise_date":"2011-04-30","expiration_date":"2020-04-30","underlying":"Common Stock","underlying_shares":1989},"source":{"system":"sec-edgar","filing":"0001223203-19-000020","document":"primary_doc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/230557/000122320319000020/primary_doc.xml","form_type":"4"}},{"id":3537216,"issuer":{"id":3856,"kind":"organization","name":"SELECTIVE INSURANCE GROUP INC","symbol":"SIGI"},"owners":[{"id":50121,"kind":"person","name":"Nicholson Cynthia S","position":1,"cik":"0001470648","reported_name":"Nicholson Cynthia S","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2019-05-07T22:05:38.000Z","date":"2019-05-03","kind":"sale","acquired":false,"shares":9786,"price":70.9523,"value":694339.2078,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F4","text":"Represents the weighted average sale price. The highest price at which shares were sold was $71.14 and the lowest price at which shares were sold was $70.76. The reporting person hereby undertakes to provide upon request to the SEC's staff, the issuer or its security holders, full information regarding the number of shares sold at each separate price."}],"balance_after":21326.8692,"source":{"system":"sec-edgar","filing":"0001223203-19-000020","document":"primary_doc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/230557/000122320319000020/primary_doc.xml","form_type":"4"}},{"id":3537215,"issuer":{"id":3856,"kind":"organization","name":"SELECTIVE INSURANCE GROUP INC","symbol":"SIGI"},"owners":[{"id":50121,"kind":"person","name":"Nicholson Cynthia S","position":1,"cik":"0001470648","reported_name":"Nicholson Cynthia S","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2019-05-07T22:05:38.000Z","date":"2019-05-03","kind":"sale","acquired":false,"shares":1989,"price":70.8082,"value":140837.5098,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Represents the weighted average sale price. The highest price at which shares were sold was $70.955 and the lowest price at which shares were sold was $70.75. The reporting person hereby undertakes to provide upon request to the SEC's staff, the issuer or its security holders, full information regarding the number of shares sold at each separate price."}],"balance_after":31112.8692,"source":{"system":"sec-edgar","filing":"0001223203-19-000020","document":"primary_doc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/230557/000122320319000020/primary_doc.xml","form_type":"4"}},{"id":3537214,"issuer":{"id":3856,"kind":"organization","name":"SELECTIVE INSURANCE GROUP INC","symbol":"SIGI"},"owners":[{"id":50121,"kind":"person","name":"Nicholson Cynthia S","position":1,"cik":"0001470648","reported_name":"Nicholson Cynthia S","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2019-05-07T22:05:38.000Z","date":"2019-05-03","kind":"exercise","acquired":true,"shares":1989,"price":16.71,"value":33236.19,"ownership":{"direct":true},"balance_after":33101.8692,"source":{"system":"sec-edgar","filing":"0001223203-19-000020","document":"primary_doc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/230557/000122320319000020/primary_doc.xml","form_type":"4"}},{"id":3537213,"issuer":{"id":3856,"kind":"organization","name":"SELECTIVE INSURANCE GROUP INC","symbol":"SIGI"},"owners":[{"id":50121,"kind":"person","name":"Nicholson Cynthia S","position":1,"cik":"0001470648","reported_name":"Nicholson Cynthia S","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2019-05-07T22:05:38.000Z","date":"2019-05-03","kind":"grant","acquired":true,"shares":2329,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Includes the award of 1,129 restricted stock units that will vest on May 03, 2020."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes 17.643 dividend equivalent units. Each dividend equivalent unit is the economic equivalent of one share of Selective Insurance Group, Inc. common stock."}],"balance_after":31112.8692,"source":{"system":"sec-edgar","filing":"0001223203-19-000020","document":"primary_doc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/230557/000122320319000020/primary_doc.xml","form_type":"4"}},{"id":3944967,"issuer":{"id":3856,"kind":"organization","name":"SELECTIVE INSURANCE GROUP INC","symbol":"SIGI"},"owners":[{"id":50121,"kind":"person","name":"Nicholson Cynthia S","position":1,"cik":"0001470648","reported_name":"Nicholson Cynthia S","relationship":{"director":true}}],"security":"Common Stock","published_at":"2018-05-07T20:26:51.000Z","date":"2018-05-04","kind":"grant","acquired":true,"shares":1451,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The award of 1,451 restricted stock units will vest on May 4, 2019."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes 18.945 dividend equivalent units.   Each dividend equivalent unit is the economic equivalent of one share of Selective Insurance Group, Inc. common stock."}],"balance_after":28766.2262,"source":{"system":"sec-edgar","filing":"0001225208-18-008832","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/230557/000122520818008832/doc4.xml","form_type":"4"}},{"id":4341146,"issuer":{"id":3856,"kind":"organization","name":"SELECTIVE INSURANCE GROUP INC","symbol":"SIGI"},"owners":[{"id":50121,"kind":"person","name":"Nicholson Cynthia S","position":1,"cik":"0001470648","reported_name":"Nicholson Cynthia S","relationship":{"director":true}}],"security":"Common Stock","published_at":"2017-05-01T20:08:15.000Z","date":"2017-04-28","kind":"grant","acquired":true,"shares":1516,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The award of 1,516 restricted stock units will vest on April 28, 2018."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes 11.8008 dividend equivalent units.   Each dividend equivalent unit is the economic equivalent of one share of Selective Insurance Group, Inc. common stock."}],"balance_after":27296.2812,"source":{"system":"sec-edgar","filing":"0001225208-17-008709","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/230557/000122520817008709/doc4.xml","form_type":"4"}},{"id":4460718,"issuer":{"id":3856,"kind":"organization","name":"SELECTIVE INSURANCE GROUP INC","symbol":"SIGI"},"owners":[{"id":50121,"kind":"person","name":"Nicholson Cynthia S","position":1,"cik":"0001470648","reported_name":"Nicholson Cynthia S","relationship":{"director":true}}],"security":"Common Stock","published_at":"2017-02-09T21:13:37.000Z","date":"2017-02-08","kind":"sale","acquired":false,"shares":6900,"price":43.002,"value":296713.8,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Represents the weighted average sale price.  The highest price at which shares were sold was $43.025 and the lowest price at which shares were sold was $43.00.  The reporting person hereby undertakes to provide upon request to the SEC's staff, the issuer or its security holders, full information regarding the number of shares sold at each separate price."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes 37.7315 dividend equivalent units.   Each dividend equivalent unit is the economic equivalent of one share of Selective Insurance Group, Inc. common stock."}],"balance_after":25768.4804,"source":{"system":"sec-edgar","filing":"0001225208-17-002730","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/230557/000122520817002730/doc4.xml","form_type":"4"}}]}