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The highest price at which shares were sold was $80.1000 and the lowest price at which shares were sold was $79.3300.  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 80.4427 dividend equivalent units.   Each dividend equivalent unit is the economic equivalent of one share of Selective Insurance Group, Inc. common stock."}],"balance_after":176722.7985,"source":{"system":"sec-edgar","filing":"0001225208-21-013756","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/230557/000122520821013756/doc4.xml","form_type":"4"}},{"id":2594239,"issuer":{"id":3856,"kind":"organization","name":"SELECTIVE INSURANCE GROUP INC","symbol":"SIGI"},"owners":[{"id":130372,"kind":"person","name":"MURPHY GREGORY E","position":1,"cik":"0001208247","reported_name":"MURPHY GREGORY E","relationship":{"director":true}}],"security":"Common Stock","published_at":"2021-08-23T20:07:02.000Z","date":"2021-08-20","kind":"gift","acquired":false,"shares":1000,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":199401.3558,"source":{"system":"sec-edgar","filing":"0001225208-21-011631","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/230557/000122520821011631/doc4.xml","form_type":"4"}},{"id":2620761,"issuer":{"id":3856,"kind":"organization","name":"SELECTIVE INSURANCE GROUP INC","symbol":"SIGI"},"owners":[{"id":130372,"kind":"person","name":"MURPHY GREGORY E","position":1,"cik":"0001208247","reported_name":"MURPHY GREGORY E","relationship":{"director":true}}],"security":"Common Stock","published_at":"2021-08-02T20:04:57.000Z","date":"2021-07-30","kind":"sale","acquired":false,"shares":24691,"price":81.1896,"value":2004652.4136,"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 $81.4800 and the lowest price at which shares were sold was $81.0000.  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 88.3564 dividend equivalent units.   Each dividend equivalent unit is the economic equivalent of one share of Selective Insurance Group, Inc. common stock."}],"balance_after":200401.3558,"source":{"system":"sec-edgar","filing":"0001225208-21-010995","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/230557/000122520821010995/doc4.xml","form_type":"4"}},{"id":2733793,"issuer":{"id":3856,"kind":"organization","name":"SELECTIVE INSURANCE GROUP INC","symbol":"SIGI"},"owners":[{"id":130372,"kind":"person","name":"MURPHY GREGORY E","position":1,"cik":"0001208247","reported_name":"MURPHY GREGORY E","relationship":{"director":true}}],"security":"Common Stock","published_at":"2021-05-03T20:09:46.000Z","date":"2021-04-30","kind":"sale","acquired":false,"shares":32388,"price":75.5941,"value":2448341.7108,"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 $76.0100 and the lowest price at which shares were sold was $75.5000.  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Each dividend equivalent unit is the economic equivalent of one share of Selective Insurance Group, Inc. common stock."}],"balance_after":257391.9994,"source":{"system":"sec-edgar","filing":"0001225208-21-007387","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/230557/000122520821007387/doc4.xml","form_type":"4"}},{"id":2875806,"issuer":{"id":3856,"kind":"organization","name":"SELECTIVE INSURANCE GROUP INC","symbol":"SIGI"},"owners":[{"id":130372,"kind":"person","name":"MURPHY GREGORY E","position":1,"cik":"0001208247","reported_name":"MURPHY GREGORY E","relationship":{"director":true}}],"security":"Common Stock","published_at":"2021-02-08T21:02:42.000Z","date":"2021-02-05","kind":"tax_withholding","acquired":false,"shares":13121,"price":64.72,"value":849191.12,"ownership":{"direct":true},"balance_after":256247.6602,"source":{"system":"sec-edgar","filing":"0001225208-21-001835","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/230557/000122520821001835/doc4.xml","form_type":"4"}},{"id":2875805,"issuer":{"id":3856,"kind":"organization","name":"SELECTIVE INSURANCE GROUP INC","symbol":"SIGI"},"owners":[{"id":130372,"kind":"person","name":"MURPHY GREGORY E","position":1,"cik":"0001208247","reported_name":"MURPHY GREGORY E","relationship":{"director":true}}],"security":"Common Stock","published_at":"2021-02-08T21:02:42.000Z","date":"2021-02-01","kind":"tax_withholding","acquired":false,"shares":4946,"price":64.96,"value":321292.16,"ownership":{"direct":true},"balance_after":269368.6602,"source":{"system":"sec-edgar","filing":"0001225208-21-001835","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/230557/000122520821001835/doc4.xml","form_type":"4"}},{"id":2954590,"issuer":{"id":3856,"kind":"organization","name":"SELECTIVE INSURANCE GROUP INC","symbol":"SIGI"},"owners":[{"id":130372,"kind":"person","name":"MURPHY GREGORY E","position":1,"cik":"0001208247","reported_name":"MURPHY GREGORY E","relationship":{"director":true,"officer":true,"officer_title":"Executive Chairman"}}],"security":"Common Stock","published_at":"2020-12-08T21:04:58.000Z","date":"2020-12-07","kind":"gift","acquired":false,"shares":400,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Includes 264.6027 dividend equivalent units.   Each dividend equivalent unit is the economic equivalent of one share of Selective Insurance Group, Inc. common stock."}],"balance_after":274314.6602,"source":{"system":"sec-edgar","filing":"0001225208-20-014352","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/230557/000122520820014352/doc4.xml","form_type":"4"}},{"id":2976650,"issuer":{"id":3856,"kind":"organization","name":"SELECTIVE INSURANCE GROUP INC","symbol":"SIGI"},"owners":[{"id":130372,"kind":"person","name":"MURPHY GREGORY E","position":1,"cik":"0001208247","reported_name":"MURPHY GREGORY E","relationship":{"director":true,"officer":true,"officer_title":"Executive Chairman"}}],"security":"Common Stock","published_at":"2020-11-18T21:03:52.000Z","date":"2020-11-17","kind":"sale","acquired":false,"shares":10000,"price":63.0774,"value":630774.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Represents the weighted average sale price.  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Also includes 538.897600 dividend equivalent units.  Each dividend equivalent unit is the economic equivalent of one share of Selective Insurance Group, Inc. common stock."}],"balance_after":284189.6747,"source":{"system":"sec-edgar","filing":"0001225208-20-010405","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/230557/000122520820010405/doc4.xml","form_type":"4"}},{"id":3285705,"issuer":{"id":3856,"kind":"organization","name":"SELECTIVE INSURANCE GROUP INC","symbol":"SIGI"},"owners":[{"id":130372,"kind":"person","name":"MURPHY GREGORY E","position":1,"cik":"0001208247","reported_name":"MURPHY GREGORY E","relationship":{"director":true}}],"security":"Common Stock","published_at":"2020-02-07T21:03:18.000Z","date":"2020-02-06","kind":"tax_withholding","acquired":false,"shares":13065,"price":68.08,"value":889465.2,"ownership":{"direct":true},"balance_after":287768.7478,"source":{"system":"sec-edgar","filing":"0001225208-20-001807","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/230557/000122520820001807/doc4.xml","form_type":"4"}},{"id":3297546,"issuer":{"id":3856,"kind":"organization","name":"SELECTIVE INSURANCE GROUP INC","symbol":"SIGI"},"owners":[{"id":130372,"kind":"person","name":"MURPHY GREGORY E","position":1,"cik":"0001208247","reported_name":"MURPHY GREGORY E","relationship":{"director":true,"officer":true,"officer_title":"Chairman & CEO"}}],"security":"Common Stock","published_at":"2020-01-31T21:09:07.000Z","date":"2020-01-29","kind":"grant","acquired":true,"shares":24961,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Shares reported represent the issuance of securities based on the satisfaction of performance criteria of performance-based restricted stock units granted on February 4, 2019."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes 546.3034 dividend equivalent units.   Each dividend equivalent unit is the economic equivalent of one share of Selective Insurance Group, Inc. common stock."}],"balance_after":300833.7478,"source":{"system":"sec-edgar","filing":"0001225208-20-001415","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/230557/000122520820001415/doc4.xml","form_type":"4"}},{"id":3382995,"issuer":{"id":3856,"kind":"organization","name":"SELECTIVE INSURANCE GROUP INC","symbol":"SIGI"},"owners":[{"id":130372,"kind":"person","name":"MURPHY GREGORY E","position":1,"cik":"0001208247","reported_name":"MURPHY GREGORY E","relationship":{"director":true,"officer":true,"officer_title":"Chairman & CEO"}}],"security":"Common Stock","published_at":"2019-11-04T19:08:50.000Z","date":"2019-11-01","kind":"grant","acquired":true,"shares":14410,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"date","element":"transactionDate","label":"F1","text":"This restricted stock unit grant will vest on February 1, 2021."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes 421.15903 shares acquired through the Company's Employee Stock Purchase Plan.  Also includes 305.9976 dividend equivalent units.  Each dividend equivalent unit is the economic equivalent of one share of Selective Insurance Group, Inc. common stock.  Also includes 174.6746 dividend equivalent units previously reported on Mr. Murphy's Form 4 dated May 10, 2019, that were inadvertently omitted from column 5."}],"balance_after":275326.4444,"source":{"system":"sec-edgar","filing":"0001225208-19-014041","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/230557/000122520819014041/doc4.xml","form_type":"4"}},{"id":3532689,"issuer":{"id":3856,"kind":"organization","name":"SELECTIVE INSURANCE GROUP INC","symbol":"SIGI"},"owners":[{"id":130372,"kind":"person","name":"MURPHY GREGORY E","position":1,"cik":"0001208247","reported_name":"MURPHY GREGORY E","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chairman & CEO"}}],"security":"Common Stock","published_at":"2019-05-10T20:38:06.000Z","date":"2019-05-08","kind":"gift","acquired":false,"shares":4100,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"(1) Includes 174.6746 dividend equivalent units.  Each dividend equivalent unit is the economic equivalent of one share of Selective Insurance Group, Inc. common stock."}],"balance_after":260014.6132,"source":{"system":"sec-edgar","filing":"0001223203-19-000030","document":"primary_doc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/230557/000122320319000030/primary_doc.xml","form_type":"4"}},{"id":3648177,"issuer":{"id":3856,"kind":"organization","name":"SELECTIVE INSURANCE GROUP INC","symbol":"SIGI"},"owners":[{"id":130372,"kind":"person","name":"MURPHY GREGORY E","position":1,"cik":"0001208247","reported_name":"MURPHY GREGORY E","relationship":{"director":true,"officer":true,"officer_title":"Chairman & CEO"}}],"security":"Common Stock","published_at":"2019-02-20T22:13:33.000Z","date":"2019-02-19","kind":"sale","acquired":false,"shares":5000,"price":66.2454,"value":331227.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Represents the weighted average sale price.  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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":264114.6132,"source":{"system":"sec-edgar","filing":"0001225208-19-003096","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/230557/000122520819003096/doc4.xml","form_type":"4"}},{"id":3666986,"issuer":{"id":3856,"kind":"organization","name":"SELECTIVE INSURANCE GROUP INC","symbol":"SIGI"},"owners":[{"id":130372,"kind":"person","name":"MURPHY GREGORY E","position":1,"cik":"0001208247","reported_name":"MURPHY GREGORY E","relationship":{"director":true,"officer":true,"officer_title":"Chairman & CEO"}}],"security":"Common Stock","published_at":"2019-02-11T21:13:45.000Z","date":"2019-02-08","kind":"tax_withholding","acquired":false,"shares":16378,"price":64.38,"value":1054415.64,"ownership":{"direct":true},"balance_after":269114.6132,"source":{"system":"sec-edgar","filing":"0001225208-19-002147","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/230557/000122520819002147/doc4.xml","form_type":"4"}},{"id":3680564,"issuer":{"id":3856,"kind":"organization","name":"SELECTIVE INSURANCE GROUP INC","symbol":"SIGI"},"owners":[{"id":130372,"kind":"person","name":"MURPHY GREGORY E","position":1,"cik":"0001208247","reported_name":"MURPHY GREGORY E","relationship":{"director":true,"officer":true,"officer_title":"Chairman & CEO"}}],"security":"Common Stock","published_at":"2019-02-01T21:06:45.000Z","date":"2019-01-30","kind":"grant","acquired":true,"shares":26042,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Shares reported represent the issuance of securities based on the satisfaction of performance criteria of performance-based restricted stock units granted on February 5, 2018."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes 531.9499 dividend equivalent units.   Each dividend equivalent unit is the economic equivalent of one share of Selective Insurance Group, Inc. common stock."}],"balance_after":285492.6132,"source":{"system":"sec-edgar","filing":"0001225208-19-001645","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/230557/000122520819001645/doc4.xml","form_type":"4"}},{"id":3773645,"issuer":{"id":3856,"kind":"organization","name":"SELECTIVE INSURANCE GROUP INC","symbol":"SIGI"},"owners":[{"id":130372,"kind":"person","name":"MURPHY GREGORY E","position":1,"cik":"0001208247","reported_name":"MURPHY GREGORY E","relationship":{"director":true,"officer":true,"officer_title":"Chairman & CEO"}}],"security":"Stock Option","published_at":"2018-11-06T21:14:29.000Z","date":"2018-11-05","kind":"exercise","acquired":false,"shares":6439,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":0,"derivative":{"exercise_price":15.53,"exercise_date":"2011-02-05","expiration_date":"2020-02-05","underlying":"Common Stock","underlying_shares":6439},"source":{"system":"sec-edgar","filing":"0001225208-18-015226","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/230557/000122520818015226/doc4.xml","form_type":"4"}},{"id":3773644,"issuer":{"id":3856,"kind":"organization","name":"SELECTIVE INSURANCE GROUP INC","symbol":"SIGI"},"owners":[{"id":130372,"kind":"person","name":"MURPHY GREGORY E","position":1,"cik":"0001208247","reported_name":"MURPHY GREGORY E","relationship":{"director":true,"officer":true,"officer_title":"Chairman & CEO"}}],"security":"Common Stock","published_at":"2018-11-06T21:14:29.000Z","date":"2018-11-05","kind":"gift","acquired":false,"shares":4000,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":258918.6633,"source":{"system":"sec-edgar","filing":"0001225208-18-015226","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/230557/000122520818015226/doc4.xml","form_type":"4"}},{"id":3773643,"issuer":{"id":3856,"kind":"organization","name":"SELECTIVE INSURANCE GROUP INC","symbol":"SIGI"},"owners":[{"id":130372,"kind":"person","name":"MURPHY GREGORY E","position":1,"cik":"0001208247","reported_name":"MURPHY GREGORY E","relationship":{"director":true,"officer":true,"officer_title":"Chairman & CEO"}}],"security":"Common Stock","published_at":"2018-11-06T21:14:29.000Z","date":"2018-11-05","kind":"tax_withholding","acquired":false,"shares":1572,"price":63.63,"value":100026.36,"ownership":{"direct":true},"balance_after":262918.6633,"source":{"system":"sec-edgar","filing":"0001225208-18-015226","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/230557/000122520818015226/doc4.xml","form_type":"4"}},{"id":3773642,"issuer":{"id":3856,"kind":"organization","name":"SELECTIVE INSURANCE GROUP INC","symbol":"SIGI"},"owners":[{"id":130372,"kind":"person","name":"MURPHY GREGORY E","position":1,"cik":"0001208247","reported_name":"MURPHY GREGORY E","relationship":{"director":true,"officer":true,"officer_title":"Chairman & CEO"}}],"security":"Common Stock","published_at":"2018-11-06T21:14:29.000Z","date":"2018-11-05","kind":"exercise","acquired":true,"shares":6439,"price":15.53,"value":99997.67,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Includes 435.16107 shares acquired through the Company's Employee Stock Purchase Plan.  Also includes 413.8138 dividend equivalent units.  Each dividend equivalent unit is the economic equivalent of one share of Selective Insurance Group, Inc. common stock."}],"balance_after":264490.6633,"source":{"system":"sec-edgar","filing":"0001225208-18-015226","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/230557/000122520818015226/doc4.xml","form_type":"4"}},{"id":3927142,"issuer":{"id":3856,"kind":"organization","name":"SELECTIVE INSURANCE GROUP INC","symbol":"SIGI"},"owners":[{"id":130372,"kind":"person","name":"MURPHY GREGORY E","position":1,"cik":"0001208247","reported_name":"MURPHY GREGORY E","relationship":{"director":true,"officer":true,"officer_title":"Chairman & CEO"}}],"security":"Stock Option","published_at":"2018-05-18T20:07:54.000Z","date":"2018-05-17","kind":"exercise","acquired":false,"shares":6514,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":0,"derivative":{"exercise_price":15.35,"exercise_date":"2010-01-30","expiration_date":"2019-01-30","underlying":"Common Stock","underlying_shares":6514},"source":{"system":"sec-edgar","filing":"0001225208-18-009555","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/230557/000122520818009555/doc4.xml","form_type":"4"}},{"id":3927141,"issuer":{"id":3856,"kind":"organization","name":"SELECTIVE INSURANCE GROUP INC","symbol":"SIGI"},"owners":[{"id":130372,"kind":"person","name":"MURPHY GREGORY E","position":1,"cik":"0001208247","reported_name":"MURPHY GREGORY E","relationship":{"director":true,"officer":true,"officer_title":"Chairman & CEO"}}],"security":"Common Stock","published_at":"2018-05-18T20:07:54.000Z","date":"2018-05-17","kind":"tax_withholding","acquired":false,"shares":1794,"price":55.75,"value":100015.5,"ownership":{"direct":true},"balance_after":257202.6884,"source":{"system":"sec-edgar","filing":"0001225208-18-009555","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/230557/000122520818009555/doc4.xml","form_type":"4"}},{"id":3927140,"issuer":{"id":3856,"kind":"organization","name":"SELECTIVE INSURANCE GROUP INC","symbol":"SIGI"},"owners":[{"id":130372,"kind":"person","name":"MURPHY GREGORY E","position":1,"cik":"0001208247","reported_name":"MURPHY GREGORY E","relationship":{"director":true,"officer":true,"officer_title":"Chairman & CEO"}}],"security":"Common Stock","published_at":"2018-05-18T20:07:54.000Z","date":"2018-05-17","kind":"exercise","acquired":true,"shares":6514,"price":15.35,"value":99989.9,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Includes 212.7901 dividend equivalent units.   Each dividend equivalent unit is the economic equivalent of one share of Selective Insurance Group, Inc. common stock."}],"balance_after":258996.6884,"source":{"system":"sec-edgar","filing":"0001225208-18-009555","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/230557/000122520818009555/doc4.xml","form_type":"4"}},{"id":4077891,"issuer":{"id":3856,"kind":"organization","name":"SELECTIVE INSURANCE GROUP INC","symbol":"SIGI"},"owners":[{"id":130372,"kind":"person","name":"MURPHY GREGORY E","position":1,"cik":"0001208247","reported_name":"MURPHY GREGORY E","relationship":{"director":true,"officer":true,"officer_title":"Chairman & CEO"}}],"security":"Common Stock","published_at":"2018-02-05T21:28:48.000Z","date":"2018-02-02","kind":"tax_withholding","acquired":false,"shares":16201,"price":59.3,"value":960719.3,"ownership":{"direct":true},"balance_after":252269.8983,"source":{"system":"sec-edgar","filing":"0001225208-18-002154","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/230557/000122520818002154/doc4.xml","form_type":"4"}},{"id":4077890,"issuer":{"id":3856,"kind":"organization","name":"SELECTIVE INSURANCE GROUP INC","symbol":"SIGI"},"owners":[{"id":130372,"kind":"person","name":"MURPHY GREGORY E","position":1,"cik":"0001208247","reported_name":"MURPHY GREGORY E","relationship":{"director":true,"officer":true,"officer_title":"Chairman & CEO"}}],"security":"Common Stock","published_at":"2018-02-05T21:28:48.000Z","date":"2018-02-01","kind":"grant","acquired":true,"shares":30277,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Shares reported represent the issuance of securities based on the satisfaction of performance criteria of performance-based restricted stock units granted on February 6, 2017."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes 626.0622 dividend equivalent units.   Each dividend equivalent unit is the economic equivalent of one share of Selective Insurance Group, Inc. common stock."}],"balance_after":268470.8983,"source":{"system":"sec-edgar","filing":"0001225208-18-002154","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/230557/000122520818002154/doc4.xml","form_type":"4"}},{"id":4146924,"issuer":{"id":3856,"kind":"organization","name":"SELECTIVE INSURANCE GROUP INC","symbol":"SIGI"},"owners":[{"id":130372,"kind":"person","name":"MURPHY GREGORY E","position":1,"cik":"0001208247","reported_name":"MURPHY GREGORY E","relationship":{"director":true,"officer":true,"officer_title":"Chairman & CEO"}}],"security":"Common Stock","published_at":"2017-12-01T21:45:27.000Z","date":"2017-12-01","kind":"gift","acquired":false,"shares":4085,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Includes 576.0368 shares acquired through the Company's Employee Stock Purchase Plan.  Also includes 245.8121 dividend equivalent units.  Each dividend equivalent unit is the economic equivalent of one share of Selective Insurance Group, Inc. common stock."}],"balance_after":237567.8361,"source":{"system":"sec-edgar","filing":"0001225208-17-017992","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/230557/000122520817017992/doc4.xml","form_type":"4"}},{"id":4289146,"issuer":{"id":3856,"kind":"organization","name":"SELECTIVE INSURANCE GROUP INC","symbol":"SIGI"},"owners":[{"id":130372,"kind":"person","name":"MURPHY GREGORY E","position":1,"cik":"0001208247","reported_name":"MURPHY GREGORY E","relationship":{"director":true,"officer":true,"officer_title":"Chairman & CEO"}}],"security":"Common Stock","published_at":"2017-06-08T20:06:28.000Z","date":"2017-06-07","kind":"sale","acquired":false,"shares":8789,"price":49.7967,"value":437663.1963,"ownership":{"direct":false,"nature":"By 401(k) plan"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Includes 27.938 shares acquired in Mr. Murphy's 401(k) account since the date of the reporting person's last ownership report."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Represents the weighted average sale price.  The highest price at which shares were sold was $50.00 and the lowest price at which shares were sold was $49.65.  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":"F3","text":"Reflects the liquidation of a .2957 fractional holding."}],"balance_after":0,"source":{"system":"sec-edgar","filing":"0001225208-17-011027","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/230557/000122520817011027/doc4.xml","form_type":"4"}},{"id":4339443,"issuer":{"id":3856,"kind":"organization","name":"SELECTIVE INSURANCE GROUP INC","symbol":"SIGI"},"owners":[{"id":130372,"kind":"person","name":"MURPHY GREGORY E","position":1,"cik":"0001208247","reported_name":"MURPHY GREGORY E","relationship":{"director":true,"officer":true,"officer_title":"Chairman & CEO"}}],"security":"Stock Option","published_at":"2017-05-02T20:11:09.000Z","date":"2017-05-01","kind":"exercise","acquired":false,"shares":4154,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":0,"derivative":{"exercise_price":24.07,"exercise_date":"2009-02-06","expiration_date":"2018-02-06","underlying":"Common Stock","underlying_shares":4154},"source":{"system":"sec-edgar","filing":"0001225208-17-008853","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/230557/000122520817008853/doc4.xml","form_type":"4"}},{"id":4339442,"issuer":{"id":3856,"kind":"organization","name":"SELECTIVE INSURANCE GROUP INC","symbol":"SIGI"},"owners":[{"id":130372,"kind":"person","name":"MURPHY GREGORY E","position":1,"cik":"0001208247","reported_name":"MURPHY GREGORY E","relationship":{"director":true,"officer":true,"officer_title":"Chairman & CEO"}}],"security":"Common Stock","published_at":"2017-05-02T20:11:09.000Z","date":"2017-05-01","kind":"tax_withholding","acquired":false,"shares":1933,"price":51.75,"value":100032.75,"ownership":{"direct":true},"balance_after":240584.6672,"source":{"system":"sec-edgar","filing":"0001225208-17-008853","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/230557/000122520817008853/doc4.xml","form_type":"4"}},{"id":4339441,"issuer":{"id":3856,"kind":"organization","name":"SELECTIVE INSURANCE GROUP INC","symbol":"SIGI"},"owners":[{"id":130372,"kind":"person","name":"MURPHY GREGORY E","position":1,"cik":"0001208247","reported_name":"MURPHY GREGORY E","relationship":{"director":true,"officer":true,"officer_title":"Chairman & CEO"}}],"security":"Common Stock","published_at":"2017-05-02T20:11:09.000Z","date":"2017-05-01","kind":"exercise","acquired":true,"shares":4154,"price":24.07,"value":99986.78,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Includes 278.9858 dividend equivalent units.   Each dividend equivalent unit is the economic equivalent of one share of Selective Insurance Group, Inc. common stock."}],"balance_after":242517.6672,"source":{"system":"sec-edgar","filing":"0001225208-17-008853","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/230557/000122520817008853/doc4.xml","form_type":"4"}},{"id":4465436,"issuer":{"id":3856,"kind":"organization","name":"SELECTIVE INSURANCE GROUP INC","symbol":"SIGI"},"owners":[{"id":130372,"kind":"person","name":"MURPHY GREGORY E","position":1,"cik":"0001208247","reported_name":"MURPHY GREGORY E","relationship":{"director":true,"officer":true,"officer_title":"Chairman & CEO"}}],"security":"Common Stock","published_at":"2017-02-07T21:10:11.000Z","date":"2017-02-03","kind":"tax_withholding","acquired":false,"shares":18790,"price":43.65,"value":820183.5,"ownership":{"direct":true},"balance_after":238084.6814,"source":{"system":"sec-edgar","filing":"0001225208-17-002531","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/230557/000122520817002531/doc4.xml","form_type":"4"}},{"id":4470336,"issuer":{"id":3856,"kind":"organization","name":"SELECTIVE INSURANCE GROUP INC","symbol":"SIGI"},"owners":[{"id":130372,"kind":"person","name":"MURPHY GREGORY E","position":1,"cik":"0001208247","reported_name":"MURPHY GREGORY E","relationship":{"director":true,"officer":true,"officer_title":"Chairman & CEO"}}],"security":"Common Stock","published_at":"2017-02-03T21:13:08.000Z","date":"2017-02-01","kind":"grant","acquired":true,"shares":37521.286,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Shares reported represent the issuance of securities based on the satisfaction of performance criteria of performance-based restricted stock units granted on February 8, 2016."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes 320.4094 dividend equivalent units.   Each dividend equivalent unit is the economic equivalent of one share of Selective Insurance Group, Inc. common stock."}],"balance_after":256874.6814,"source":{"system":"sec-edgar","filing":"0001225208-17-002328","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/230557/000122520817002328/doc4.xml","form_type":"4"}},{"id":4556582,"issuer":{"id":3856,"kind":"organization","name":"SELECTIVE INSURANCE GROUP INC","symbol":"SIGI"},"owners":[{"id":130372,"kind":"person","name":"MURPHY GREGORY E","position":1,"cik":"0001208247","reported_name":"MURPHY GREGORY E","relationship":{"director":true,"officer":true,"officer_title":"Chairman & CEO"}}],"security":"Common Stock","published_at":"2016-11-15T21:18:11.000Z","date":"2016-11-15","kind":"sale","acquired":false,"shares":8333,"price":39.7598,"value":331318.4134,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by Mr. Murphy on May 6, 2016."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Represents the weighted average sale price.  The highest price at which shares were sold was $40.350 and the lowest price at which shares were sold was $39.575.  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":219032.986,"source":{"system":"sec-edgar","filing":"0001225208-16-041801","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/230557/000122520816041801/doc4.xml","form_type":"4"}},{"id":4571467,"issuer":{"id":3856,"kind":"organization","name":"SELECTIVE INSURANCE GROUP INC","symbol":"SIGI"},"owners":[{"id":130372,"kind":"person","name":"MURPHY GREGORY E","position":1,"cik":"0001208247","reported_name":"MURPHY GREGORY E","relationship":{"director":true,"officer":true,"officer_title":"Chairman & CEO"}}],"security":"Common Stock","published_at":"2016-11-01T20:11:28.000Z","date":"2016-11-01","kind":"sale","acquired":false,"shares":8333,"price":36.589,"value":304896.137,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by Mr. Murphy on May 6, 2016."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Represents the weighted average sale price.  The highest price at which shares were sold was $37.10 and the lowest price at which shares were sold was $36.20.  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":227365.986,"source":{"system":"sec-edgar","filing":"0001225208-16-040923","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/230557/000122520816040923/doc4.xml","form_type":"4"}},{"id":4578721,"issuer":{"id":3856,"kind":"organization","name":"SELECTIVE INSURANCE GROUP INC","symbol":"SIGI"},"owners":[{"id":130372,"kind":"person","name":"MURPHY GREGORY E","position":1,"cik":"0001208247","reported_name":"MURPHY GREGORY E","relationship":{"director":true,"officer":true,"officer_title":"Chairman & CEO"}}],"security":"Common Stock","published_at":"2016-10-18T21:07:01.000Z","date":"2016-10-17","kind":"sale","acquired":false,"shares":8333,"price":40.3932,"value":336596.5356,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by Mr. Murphy on May 6, 2016."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Represents the weighted average sale price.  The highest price at which shares were sold was $40.60 and the lowest price at which shares were sold was $40.25.  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":235698.986,"source":{"system":"sec-edgar","filing":"0001225208-16-040582","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/230557/000122520816040582/doc4.xml","form_type":"4"}},{"id":4588992,"issuer":{"id":3856,"kind":"organization","name":"SELECTIVE INSURANCE GROUP INC","symbol":"SIGI"},"owners":[{"id":130372,"kind":"person","name":"MURPHY GREGORY E","position":1,"cik":"0001208247","reported_name":"MURPHY GREGORY E","relationship":{"director":true,"officer":true,"officer_title":"Chairman & CEO"}}],"security":"Common Stock","published_at":"2016-10-04T20:08:20.000Z","date":"2016-10-03","kind":"sale","acquired":false,"shares":8333,"price":39.3031,"value":327512.7323,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by Mr. Murphy on May 6, 2016."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Represents the weighted average sale price.  The highest price at which shares were sold was $39.72 and the lowest price at which shares were sold was $39.04.  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":244031.986,"source":{"system":"sec-edgar","filing":"0001225208-16-040028","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/230557/000122520816040028/doc4.xml","form_type":"4"}},{"id":4602966,"issuer":{"id":3856,"kind":"organization","name":"SELECTIVE INSURANCE GROUP INC","symbol":"SIGI"},"owners":[{"id":130372,"kind":"person","name":"MURPHY GREGORY E","position":1,"cik":"0001208247","reported_name":"MURPHY GREGORY E","relationship":{"director":true,"officer":true,"officer_title":"Chairman & CEO"}}],"security":"Common Stock","published_at":"2016-09-15T20:55:23.000Z","date":"2016-09-15","kind":"sale","acquired":false,"shares":8333,"price":39.4954,"value":329115.1682,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by Mr. Murphy on May 6, 2016."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Represents the weighted average sale price.  The highest price at which shares were sold was $39.610 and the lowest price at which shares were sold was $39.275.  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":"F3","text":"Includes 317.6326 dividend equivalent units.   Each dividend equivalent unit is the economic equivalent of one share of Selective Insurance Group, Inc. common stock."}],"balance_after":252364.986,"source":{"system":"sec-edgar","filing":"0001225208-16-039399","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/230557/000122520816039399/doc4.xml","form_type":"4"}}]}