{"transactions":[{"id":869269,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2026-03-03T22:42:55.000Z","date":"2026-03-02","kind":"tax_withholding","planned":true,"acquired":false,"shares":428,"price":76.89,"value":32908.92,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F4","text":"Represents securities delivered in payment of a tax liability with respect to vesting of securities issued in accordance with Rule 16b-3."},{"field":"shares","element":"transactionShares","label":"F5","text":"Securities sold pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 25, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F10","text":"Represents the weighted average sale price of multiple open market same day sales with prices ranging from $76.53 to $77.17 per share. Full information regarding the number of shares sold at each separate price will be provided to the Securities and Exchange Commission or a security holder of the issuer upon request."}],"balance_after":31503,"source":{"system":"sec-edgar","filing":"0001616287-26-000001","document":"form4-03032026_100351.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000161628726000001/form4-03032026_100351.xml","form_type":"4"}},{"id":869268,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2026-03-03T22:42:55.000Z","date":"2026-03-02","kind":"tax_withholding","planned":true,"acquired":false,"shares":41,"price":76.18,"value":3123.38,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F4","text":"Represents securities delivered in payment of a tax liability with respect to vesting of securities issued in accordance with Rule 16b-3."},{"field":"shares","element":"transactionShares","label":"F5","text":"Securities sold pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 25, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F9","text":"Represents the weighted average sale price of multiple open market same day sales with prices ranging from $75.50 to $76.22 per share. Full information regarding the number of shares sold at each separate price will be provided to the Securities and Exchange Commission or a security holder of the issuer upon request."}],"balance_after":31931,"source":{"system":"sec-edgar","filing":"0001616287-26-000001","document":"form4-03032026_100351.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000161628726000001/form4-03032026_100351.xml","form_type":"4"}},{"id":869267,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2026-03-03T22:42:55.000Z","date":"2026-02-27","kind":"tax_withholding","planned":true,"acquired":false,"shares":475,"price":77.42,"value":36774.5,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F4","text":"Represents securities delivered in payment of a tax liability with respect to vesting of securities issued in accordance with Rule 16b-3."},{"field":"shares","element":"transactionShares","label":"F5","text":"Securities sold pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 25, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F8","text":"Represents the weighted average sale price of multiple open market same day sales with prices ranging from $77.07 to $77.90 per share. Full information regarding the number of shares sold at each separate price will be provided to the Securities and Exchange Commission or a security holder of the issuer upon request."}],"balance_after":31972,"source":{"system":"sec-edgar","filing":"0001616287-26-000001","document":"form4-03032026_100351.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000161628726000001/form4-03032026_100351.xml","form_type":"4"}},{"id":869266,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2026-03-03T22:42:55.000Z","date":"2026-02-24","kind":"tax_withholding","planned":true,"acquired":false,"shares":102,"price":77.43,"value":7897.86,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F4","text":"Represents securities delivered in payment of a tax liability with respect to vesting of securities issued in accordance with Rule 16b-3."},{"field":"shares","element":"transactionShares","label":"F5","text":"Securities sold pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 25, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F7","text":"Represents the weighted average sale price of multiple open market same day sales with prices ranging from $77.32 to $77.59 per share. Full information regarding the number of shares sold at each separate price will be provided to the Securities and Exchange Commission or a security holder of the issuer upon request."}],"balance_after":32447,"source":{"system":"sec-edgar","filing":"0001616287-26-000001","document":"form4-03032026_100351.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000161628726000001/form4-03032026_100351.xml","form_type":"4"}},{"id":869265,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2026-03-03T22:42:55.000Z","date":"2026-02-24","kind":"tax_withholding","planned":true,"acquired":false,"shares":477,"price":76.94,"value":36700.38,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F4","text":"Represents securities delivered in payment of a tax liability with respect to vesting of securities issued in accordance with Rule 16b-3."},{"field":"shares","element":"transactionShares","label":"F5","text":"Securities sold pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 25, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"Represents the weighted average sale price of multiple open market same day sales with prices ranging from $76.28 to $77.23 per share. Full information regarding the number of shares sold at each separate price will be provided to the Securities and Exchange Commission or a security holder of the issuer upon request."}],"balance_after":32549,"source":{"system":"sec-edgar","filing":"0001616287-26-000001","document":"form4-03032026_100351.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000161628726000001/form4-03032026_100351.xml","form_type":"4"}},{"id":869264,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2026-03-03T22:42:55.000Z","date":"2026-02-25","kind":"grant","planned":true,"acquired":true,"shares":2973,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","text":"Represents restricted stock awards granted effective February 25, 2026 with respect to which sale or transfer rights will vest over a three-year performance period commencing on January 1, 2026 and ending on December 31, 2028. Vesting of these shares is dependent upon the attainment of pre-established performance objectives, and any difference between shares granted and shares earned at the end of the performance period will be reported at the conclusion of the performance period in 2029."}],"balance_after":33026,"source":{"system":"sec-edgar","filing":"0001616287-26-000001","document":"form4-03032026_100351.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000161628726000001/form4-03032026_100351.xml","form_type":"4"}},{"id":869263,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2026-03-03T22:42:55.000Z","date":"2026-02-25","kind":"grant","planned":true,"acquired":true,"shares":2581,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"Represents restricted stock awards effective February 25, 2026, with respect to which sale or transfer rights shall vest over three years with installments of 30% on February 25, 2027, 30% on February 25, 2028, and the remaining 40% on February 25, 2029, provided the grantee meets certain employment conditions."}],"balance_after":30053,"source":{"system":"sec-edgar","filing":"0001616287-26-000001","document":"form4-03032026_100351.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000161628726000001/form4-03032026_100351.xml","form_type":"4"}},{"id":869262,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2026-03-03T22:42:55.000Z","date":"2026-02-25","kind":"other","planned":true,"acquired":false,"shares":2420,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents the difference between performance shares, with a three year performance period, that were granted on February 22, 2023 and actual shares earned at the end of the performance period on December 31, 2025. Final shares were approved by the Compensation Committee on February 25, 2026."}],"balance_after":27472,"source":{"system":"sec-edgar","filing":"0001616287-26-000001","document":"form4-03032026_100351.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000161628726000001/form4-03032026_100351.xml","form_type":"4"}},{"id":1230438,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2025-03-04T18:32:51.000Z","date":"2025-02-28","kind":"tax_withholding","planned":true,"acquired":false,"shares":219,"price":76.4,"value":16731.6,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F4","text":"Represents securities delivered in payment of a tax liability with respect to vesting of securities issued in accordance with Rule 16b-3."},{"field":"shares","element":"transactionShares","label":"F5","text":"Securities sold pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 16, 2024."},{"field":"price","element":"transactionPricePerShare","label":"F10","text":"Represents the weighted average sale price of multiple open market same day sales with prices ranging from $75.95 to $76.66 per share. Full information regarding the number of shares sold at each separate price will be provided to the Securities and Exchange Commission or a security holder of the issuer upon request."}],"balance_after":29892,"source":{"system":"sec-edgar","filing":"0001415889-25-006430","document":"form4-03042025_060344.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":10,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000141588925006430/form4-03042025_060344.xml","form_type":"4"}},{"id":1230437,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2025-03-04T18:32:51.000Z","date":"2025-02-28","kind":"tax_withholding","planned":true,"acquired":false,"shares":250,"price":75.4,"value":18850.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F4","text":"Represents securities delivered in payment of a tax liability with respect to vesting of securities issued in accordance with Rule 16b-3."},{"field":"shares","element":"transactionShares","label":"F5","text":"Securities sold pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 16, 2024."},{"field":"price","element":"transactionPricePerShare","label":"F9","text":"Represents the weighted average sale price of multiple open market same day sales with prices ranging from $75.26 to $75.64 per share. Full information regarding the number of shares sold at each separate price will be provided to the Securities and Exchange Commission or a security holder of the issuer upon request."}],"balance_after":30111,"source":{"system":"sec-edgar","filing":"0001415889-25-006430","document":"form4-03042025_060344.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":9,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000141588925006430/form4-03042025_060344.xml","form_type":"4"}},{"id":1230436,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2025-03-04T18:32:51.000Z","date":"2025-02-27","kind":"tax_withholding","planned":true,"acquired":false,"shares":491,"price":75.94,"value":37286.54,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F4","text":"Represents securities delivered in payment of a tax liability with respect to vesting of securities issued in accordance with Rule 16b-3."},{"field":"shares","element":"transactionShares","label":"F5","text":"Securities sold pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 16, 2024."},{"field":"price","element":"transactionPricePerShare","label":"F8","text":"Represents the weighted average sale price of multiple open market same day sales with prices ranging from $75.43 to $76.30 per share. Full information regarding the number of shares sold at each separate price will be provided to the Securities and Exchange Commission or a security holder of the issuer upon request."}],"balance_after":30361,"source":{"system":"sec-edgar","filing":"0001415889-25-006430","document":"form4-03042025_060344.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000141588925006430/form4-03042025_060344.xml","form_type":"4"}},{"id":1230435,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2025-03-04T18:32:51.000Z","date":"2025-02-27","kind":"tax_withholding","planned":true,"acquired":false,"shares":100,"price":75.21,"value":7521.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F4","text":"Represents securities delivered in payment of a tax liability with respect to vesting of securities issued in accordance with Rule 16b-3."},{"field":"shares","element":"transactionShares","label":"F5","text":"Securities sold pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 16, 2024."}],"balance_after":30852,"source":{"system":"sec-edgar","filing":"0001415889-25-006430","document":"form4-03042025_060344.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000141588925006430/form4-03042025_060344.xml","form_type":"4"}},{"id":1230434,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2025-03-04T18:32:51.000Z","date":"2025-02-25","kind":"tax_withholding","planned":true,"acquired":false,"shares":875,"price":79.41,"value":69483.75,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F4","text":"Represents securities delivered in payment of a tax liability with respect to vesting of securities issued in accordance with Rule 16b-3."},{"field":"shares","element":"transactionShares","label":"F5","text":"Securities sold pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 16, 2024."},{"field":"price","element":"transactionPricePerShare","label":"F7","text":"Represents the weighted average sale price of multiple open market same day sales with prices ranging from $79.15 to $80.00 per share. Full information regarding the number of shares sold at each separate price will be provided to the Securities and Exchange Commission or a security holder of the issuer upon request."}],"balance_after":30952,"source":{"system":"sec-edgar","filing":"0001415889-25-006430","document":"form4-03042025_060344.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000141588925006430/form4-03042025_060344.xml","form_type":"4"}},{"id":1230433,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2025-03-04T18:32:51.000Z","date":"2025-02-25","kind":"tax_withholding","planned":true,"acquired":false,"shares":114,"price":78.51,"value":8950.14,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F4","text":"Represents securities delivered in payment of a tax liability with respect to vesting of securities issued in accordance with Rule 16b-3."},{"field":"shares","element":"transactionShares","label":"F5","text":"Securities sold pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 16, 2024."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"Represents the weighted average sale price of multiple open market same day sales with prices ranging from $78.32 to $78.73 per share. Full information regarding the number of shares sold at each separate price will be provided to the Securities and Exchange Commission or a security holder of the issuer upon request."}],"balance_after":31827,"source":{"system":"sec-edgar","filing":"0001415889-25-006430","document":"form4-03042025_060344.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000141588925006430/form4-03042025_060344.xml","form_type":"4"}},{"id":1230432,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2025-03-04T18:32:51.000Z","date":"2025-02-25","kind":"tax_withholding","planned":true,"acquired":false,"shares":2,"price":77.48,"value":154.96,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F4","text":"Represents securities delivered in payment of a tax liability with respect to vesting of securities issued in accordance with Rule 16b-3."},{"field":"shares","element":"transactionShares","label":"F5","text":"Securities sold pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 16, 2024."}],"balance_after":31941,"source":{"system":"sec-edgar","filing":"0001415889-25-006430","document":"form4-03042025_060344.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000141588925006430/form4-03042025_060344.xml","form_type":"4"}},{"id":1230431,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2025-03-04T18:32:51.000Z","date":"2025-02-25","kind":"grant","planned":true,"acquired":true,"shares":2648,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","text":"Represents restricted stock awards granted effective February 25, 2025 with respect to which sale or transfer rights will vest over a three-year performance period commencing on January 1, 2025 and ending on December 31, 2027. Vesting of these shares is dependent upon the attainment of pre-established performance objectives, and any difference between shares granted and shares earned at the end of the performance period will be reported at the conclusion of the performance period in 2028."}],"balance_after":31943,"source":{"system":"sec-edgar","filing":"0001415889-25-006430","document":"form4-03042025_060344.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000141588925006430/form4-03042025_060344.xml","form_type":"4"}},{"id":1230430,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2025-03-04T18:32:51.000Z","date":"2025-02-25","kind":"grant","planned":true,"acquired":true,"shares":2259,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"Represents restricted stock awards effective February 25, 2025, with respect to which sale or transfer rights shall vest over three years with installments of 30% on February 25, 2026, 30% on February 25, 2027, and the remaining 40% on February 25, 2028, provided the grantee meets certain employment conditions."}],"balance_after":29295,"source":{"system":"sec-edgar","filing":"0001415889-25-006430","document":"form4-03042025_060344.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000141588925006430/form4-03042025_060344.xml","form_type":"4"}},{"id":1230429,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2025-03-04T18:32:51.000Z","date":"2025-02-25","kind":"other","planned":true,"acquired":false,"shares":1429,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents the difference between performance shares, with a three year performance period, that were granted on February 23, 2022 and actual shares earned at the end of the performance period on December 31, 2024. Final shares were approved by the Compensation Committee on February 25, 2025."}],"balance_after":27036,"source":{"system":"sec-edgar","filing":"0001415889-25-006430","document":"form4-03042025_060344.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000141588925006430/form4-03042025_060344.xml","form_type":"4"}},{"id":1589535,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2024-03-07T11:36:08.000Z","date":"2024-03-06","kind":"sale","planned":false,"acquired":false,"shares":900,"price":79.35,"value":71415.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Represents the weighted average sale price of multiple open market same day sales with prices ranging from $79.00 to $79.77 per share. Full information regarding the number of shares sold at each separate price will be provided to the Securities and Exchange Commission or a security holder of the issuer upon request."}],"balance_after":28465,"source":{"system":"sec-edgar","filing":"0001415889-24-007148","document":"form4-03072024_110303.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000141588924007148/form4-03072024_110303.xml","form_type":"4"}},{"id":1603794,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2024-03-05T01:42:01.000Z","date":"2024-03-04","kind":"tax_withholding","planned":false,"acquired":false,"shares":709,"price":80.44,"value":57031.96,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F4","text":"Represents securities delivered in payment of a tax liability with respect to vesting of securities issued in accordance with Rule 16b-3."}],"balance_after":29365,"source":{"system":"sec-edgar","filing":"0001415889-24-006442","document":"form4-03052024_010355.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000141588924006442/form4-03052024_010355.xml","form_type":"4"}},{"id":1603793,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2024-03-05T01:42:01.000Z","date":"2024-03-01","kind":"tax_withholding","planned":false,"acquired":false,"shares":1006,"price":80.37,"value":80852.22,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F4","text":"Represents securities delivered in payment of a tax liability with respect to vesting of securities issued in accordance with Rule 16b-3."}],"balance_after":30074,"source":{"system":"sec-edgar","filing":"0001415889-24-006442","document":"form4-03052024_010355.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000141588924006442/form4-03052024_010355.xml","form_type":"4"}},{"id":1603792,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2024-03-05T01:42:01.000Z","date":"2024-02-27","kind":"grant","planned":false,"acquired":true,"shares":2594,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","text":"Represents restricted stock awards granted effective February 27, 2024 with respect to which sale or transfer rights will vest over a three-year performance period commencing on January 1, 2024 and ending on December 31, 2026. Vesting of these shares is dependent upon the attainment of pre-established performance objectives, and any difference between shares granted and shares earned at the end of the performance period will be reported at the conclusion of the performance period in 2027."}],"balance_after":31080,"source":{"system":"sec-edgar","filing":"0001415889-24-006442","document":"form4-03052024_010355.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000141588924006442/form4-03052024_010355.xml","form_type":"4"}},{"id":1603791,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2024-03-05T01:42:01.000Z","date":"2024-02-27","kind":"grant","planned":false,"acquired":true,"shares":2234,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"Represents restricted stock awards effective February 27, 2024, with respect to which sale or transfer rights shall vest over three years with installments of 30% on February 27, 2025, 30% on February 27, 2026, and the remaining 40% on February 27, 2027, provided the grantee meets certain employment conditions."}],"balance_after":28486,"source":{"system":"sec-edgar","filing":"0001415889-24-006442","document":"form4-03052024_010355.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000141588924006442/form4-03052024_010355.xml","form_type":"4"}},{"id":1603790,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2024-03-05T01:42:01.000Z","date":"2024-02-27","kind":"other","planned":false,"acquired":false,"shares":1406,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents the difference between performance shares, with a three year performance period, that were granted on February 24, 2021 and actual shares earned at the end of the performance period on December 31, 2023. Final shares were approved by the Compensation Committee on February 27, 2024."}],"balance_after":26252,"source":{"system":"sec-edgar","filing":"0001415889-24-006442","document":"form4-03052024_010355.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000141588924006442/form4-03052024_010355.xml","form_type":"4"}},{"id":1737296,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2023-11-17T18:23:25.000Z","date":"2023-11-15","kind":"gift","planned":false,"acquired":false,"shares":131,"price":76.56,"value":10029.36,"ownership":{"direct":true},"balance_after":27658,"source":{"system":"sec-edgar","filing":"0001415889-23-015238","document":"form4-11172023_061119.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000141588923015238/form4-11172023_061119.xml","form_type":"4"}},{"id":1980163,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2023-03-02T19:22:49.000Z","date":"2023-03-01","kind":"sale","acquired":false,"shares":199,"price":80,"value":15920.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Securities sold pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 29, 2022."}],"balance_after":27789,"source":{"system":"sec-edgar","filing":"0001415889-23-003739","document":"form4-03022023_070340.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000141588923003739/form4-03022023_070340.xml","form_type":"4"}},{"id":1980162,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2023-03-02T19:22:49.000Z","date":"2023-03-01","kind":"tax_withholding","acquired":false,"shares":358,"price":80,"value":28640.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Securities sold pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 29, 2022."},{"field":"shares","element":"transactionShares","label":"F2","text":"Represents securities delivered in payment of a tax liability with respect to vesting of securities issued in accordance with Rule 16b-3."}],"balance_after":27988,"source":{"system":"sec-edgar","filing":"0001415889-23-003739","document":"form4-03022023_070340.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000141588923003739/form4-03022023_070340.xml","form_type":"4"}},{"id":1980161,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2023-03-02T19:22:49.000Z","date":"2023-02-27","kind":"sale","acquired":false,"shares":170,"price":81.3,"value":13821.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Securities sold pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 29, 2022."}],"balance_after":28346,"source":{"system":"sec-edgar","filing":"0001415889-23-003739","document":"form4-03022023_070340.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000141588923003739/form4-03022023_070340.xml","form_type":"4"}},{"id":1980160,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2023-03-02T19:22:49.000Z","date":"2023-02-27","kind":"tax_withholding","acquired":false,"shares":307,"price":81.3,"value":24959.1,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Securities sold pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 29, 2022."},{"field":"shares","element":"transactionShares","label":"F2","text":"Represents securities delivered in payment of a tax liability with respect to vesting of securities issued in accordance with Rule 16b-3."}],"balance_after":28516,"source":{"system":"sec-edgar","filing":"0001415889-23-003739","document":"form4-03022023_070340.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000141588923003739/form4-03022023_070340.xml","form_type":"4"}},{"id":1990760,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2023-02-28T01:20:28.000Z","date":"2023-02-24","kind":"sale","acquired":false,"shares":550,"price":81.56,"value":44858.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F4","text":"Securities sold pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 29, 2022."},{"field":"price","element":"transactionPricePerShare","label":"F8","text":"Represents the weighted average sale price of multiple open market same day sales with prices ranging from $81.18 to $82.13 per share. Full information regarding the number of shares sold at each separate price will be provided to the Securities and Exchange Commission or a security holder of the issuer upon request."}],"balance_after":28823,"source":{"system":"sec-edgar","filing":"0001415889-23-003416","document":"form4-02282023_010206.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":9,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000141588923003416/form4-02282023_010206.xml","form_type":"4"}},{"id":1990759,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2023-02-28T01:20:28.000Z","date":"2023-02-24","kind":"tax_withholding","acquired":false,"shares":991,"price":81.56,"value":80825.96,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F4","text":"Securities sold pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 29, 2022."},{"field":"shares","element":"transactionShares","label":"F5","text":"Represents securities delivered in payment of a tax liability with respect to vesting of securities issued in accordance with Rule 16b-3."},{"field":"price","element":"transactionPricePerShare","label":"F8","text":"Represents the weighted average sale price of multiple open market same day sales with prices ranging from $81.18 to $82.13 per share. Full information regarding the number of shares sold at each separate price will be provided to the Securities and Exchange Commission or a security holder of the issuer upon request."}],"balance_after":29373,"source":{"system":"sec-edgar","filing":"0001415889-23-003416","document":"form4-02282023_010206.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000141588923003416/form4-02282023_010206.xml","form_type":"4"}},{"id":1990758,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2023-02-28T01:20:28.000Z","date":"2023-02-24","kind":"sale","acquired":false,"shares":271,"price":80.86,"value":21913.06,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F4","text":"Securities sold pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 29, 2022."},{"field":"price","element":"transactionPricePerShare","label":"F7","text":"Represents the weighted average sale price of multiple open market same day sales with prices ranging from $80.17 to $81.16 per share. Full information regarding the number of shares sold at each separate price will be provided to the Securities and Exchange Commission or a security holder of the issuer upon request."}],"balance_after":30364,"source":{"system":"sec-edgar","filing":"0001415889-23-003416","document":"form4-02282023_010206.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000141588923003416/form4-02282023_010206.xml","form_type":"4"}},{"id":1990757,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2023-02-28T01:20:28.000Z","date":"2023-02-24","kind":"tax_withholding","acquired":false,"shares":489,"price":80.86,"value":39540.54,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F4","text":"Securities sold pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 29, 2022."},{"field":"shares","element":"transactionShares","label":"F5","text":"Represents securities delivered in payment of a tax liability with respect to vesting of securities issued in accordance with Rule 16b-3."},{"field":"price","element":"transactionPricePerShare","label":"F7","text":"Represents the weighted average sale price of multiple open market same day sales with prices ranging from $80.17 to $81.16 per share. Full information regarding the number of shares sold at each separate price will be provided to the Securities and Exchange Commission or a security holder of the issuer upon request."}],"balance_after":30635,"source":{"system":"sec-edgar","filing":"0001415889-23-003416","document":"form4-02282023_010206.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000141588923003416/form4-02282023_010206.xml","form_type":"4"}},{"id":1990756,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2023-02-28T01:20:28.000Z","date":"2023-02-24","kind":"sale","acquired":false,"shares":57,"price":79.44,"value":4528.08,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F4","text":"Securities sold pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 29, 2022."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"Represents the weighted average sale price of multiple open market same day sales with prices ranging from $79.09 to $79.74 per share. Full information regarding the number of shares sold at each separate price will be provided to the Securities and Exchange Commission or a security holder of the issuer upon request."}],"balance_after":31124,"source":{"system":"sec-edgar","filing":"0001415889-23-003416","document":"form4-02282023_010206.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000141588923003416/form4-02282023_010206.xml","form_type":"4"}},{"id":1990755,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2023-02-28T01:20:28.000Z","date":"2023-02-24","kind":"tax_withholding","acquired":false,"shares":102,"price":79.44,"value":8102.88,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F4","text":"Securities sold pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 29, 2022."},{"field":"shares","element":"transactionShares","label":"F5","text":"Represents securities delivered in payment of a tax liability with respect to vesting of securities issued in accordance with Rule 16b-3."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"Represents the weighted average sale price of multiple open market same day sales with prices ranging from $79.09 to $79.74 per share. Full information regarding the number of shares sold at each separate price will be provided to the Securities and Exchange Commission or a security holder of the issuer upon request."}],"balance_after":31181,"source":{"system":"sec-edgar","filing":"0001415889-23-003416","document":"form4-02282023_010206.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000141588923003416/form4-02282023_010206.xml","form_type":"4"}},{"id":1990754,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2023-02-28T01:20:28.000Z","date":"2023-02-22","kind":"grant","acquired":true,"shares":2420,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","text":"Represents restricted stock awards granted effective February 22, 2023 with respect to which sale or transfer rights will vest over a three-year performance period commencing on January 1, 2023 and ending on December 31, 2025. Vesting of these shares is dependent upon the attainment of pre-established performance objectives, and any difference between shares granted and shares earned at the end of the performance period will be reported at the conclusion of the performance period in 2026."}],"balance_after":31283,"source":{"system":"sec-edgar","filing":"0001415889-23-003416","document":"form4-02282023_010206.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000141588923003416/form4-02282023_010206.xml","form_type":"4"}},{"id":1990753,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2023-02-28T01:20:28.000Z","date":"2023-02-22","kind":"grant","acquired":true,"shares":2068,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"Represents restricted stock awards effective February 22, 2023, with respect to which sale or transfer rights shall vest over three years with installments of 30% on February 22, 2024, 30% on February 22, 2025, and the remaining 40% on February 22, 2026, provided the grantee meets certain employment conditions."}],"balance_after":28863,"source":{"system":"sec-edgar","filing":"0001415889-23-003416","document":"form4-02282023_010206.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000141588923003416/form4-02282023_010206.xml","form_type":"4"}},{"id":1990752,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2023-02-28T01:20:28.000Z","date":"2023-02-22","kind":"other","acquired":true,"shares":516,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents the difference between performance shares, with a three year performance period, that were granted on February 26, 2020 and actual shares earned at the end of the performance period on December 31, 2022. Final shares were approved by the Compensation Committee on February 22, 2023."}],"balance_after":26795,"source":{"system":"sec-edgar","filing":"0001415889-23-003416","document":"form4-02282023_010206.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000141588923003416/form4-02282023_010206.xml","form_type":"4"}},{"id":2121355,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2022-11-09T11:07:39.000Z","date":"2022-11-08","kind":"gift","acquired":false,"shares":120,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":26279,"source":{"system":"sec-edgar","filing":"0001415889-22-011205","document":"form4-11092022_111131.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000141588922011205/form4-11092022_111131.xml","form_type":"4"}},{"id":2361572,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2022-03-02T17:53:41.000Z","date":"2022-02-28","kind":"sale","acquired":false,"shares":331,"price":82.98,"value":27466.38,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Securities sold pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 17, 2021."}],"balance_after":26399,"source":{"system":"sec-edgar","filing":"0001179110-22-001866","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000117911022001866/edgar.xml","form_type":"4"}},{"id":2361571,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2022-03-02T17:53:41.000Z","date":"2022-02-28","kind":"tax_withholding","acquired":false,"shares":597,"price":82.98,"value":49539.06,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Securities sold pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 17, 2021."},{"field":"shares","element":"transactionShares","label":"F2","text":"Represents securities delivered in payment of a tax liability with respect to vesting of securities issued in accordance with Rule 16b-3."}],"balance_after":26730,"source":{"system":"sec-edgar","filing":"0001179110-22-001866","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000117911022001866/edgar.xml","form_type":"4"}},{"id":2369333,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2022-02-28T19:00:06.000Z","date":"2022-02-25","kind":"sale","acquired":false,"shares":170,"price":83.37,"value":14172.9,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F4","text":"Securities sold pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 17, 2021."}],"balance_after":27327,"source":{"system":"sec-edgar","filing":"0001179110-22-001674","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":13,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000117911022001674/edgar.xml","form_type":"4"}},{"id":2369332,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2022-02-28T19:00:06.000Z","date":"2022-02-25","kind":"tax_withholding","acquired":false,"shares":307,"price":83.37,"value":25594.59,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F4","text":"Securities sold pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 17, 2021."},{"field":"shares","element":"transactionShares","label":"F5","text":"Represents securities delivered in payment of a tax liability with respect to vesting of securities issued in accordance with Rule 16b-3."}],"balance_after":27497,"source":{"system":"sec-edgar","filing":"0001179110-22-001674","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":12,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000117911022001674/edgar.xml","form_type":"4"}},{"id":2369331,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2022-02-28T19:00:06.000Z","date":"2022-02-24","kind":"sale","acquired":false,"shares":36,"price":83.71,"value":3013.56,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F4","text":"Securities sold pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 17, 2021."}],"balance_after":27804,"source":{"system":"sec-edgar","filing":"0001179110-22-001674","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":11,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000117911022001674/edgar.xml","form_type":"4"}},{"id":2369330,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2022-02-28T19:00:06.000Z","date":"2022-02-24","kind":"tax_withholding","acquired":false,"shares":64,"price":83.71,"value":5357.44,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F4","text":"Securities sold pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 17, 2021."},{"field":"shares","element":"transactionShares","label":"F5","text":"Represents securities delivered in payment of a tax liability with respect to vesting of securities issued in accordance with Rule 16b-3."}],"balance_after":27840,"source":{"system":"sec-edgar","filing":"0001179110-22-001674","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":10,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000117911022001674/edgar.xml","form_type":"4"}},{"id":2369329,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2022-02-28T19:00:06.000Z","date":"2022-02-24","kind":"sale","acquired":false,"shares":151,"price":83.1,"value":12548.1,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F4","text":"Securities sold pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 17, 2021."},{"field":"price","element":"transactionPricePerShare","label":"F8","text":"Represents the weighted average sale price of multiple open market same day sales with prices ranging from $82.70 to $83.60 per share. Full information regarding the number of shares sold at each separate price will be provided to the Securities and Exchange Commission or a security holder of the issuer upon request."}],"balance_after":27904,"source":{"system":"sec-edgar","filing":"0001179110-22-001674","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":9,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000117911022001674/edgar.xml","form_type":"4"}},{"id":2369328,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2022-02-28T19:00:06.000Z","date":"2022-02-24","kind":"tax_withholding","acquired":false,"shares":272,"price":83.1,"value":22603.2,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F4","text":"Securities sold pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 17, 2021."},{"field":"shares","element":"transactionShares","label":"F5","text":"Represents securities delivered in payment of a tax liability with respect to vesting of securities issued in accordance with Rule 16b-3."},{"field":"price","element":"transactionPricePerShare","label":"F8","text":"Represents the weighted average sale price of multiple open market same day sales with prices ranging from $82.70 to $83.60 per share. Full information regarding the number of shares sold at each separate price will be provided to the Securities and Exchange Commission or a security holder of the issuer upon request."}],"balance_after":28055,"source":{"system":"sec-edgar","filing":"0001179110-22-001674","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000117911022001674/edgar.xml","form_type":"4"}},{"id":2369327,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2022-02-28T19:00:06.000Z","date":"2022-02-24","kind":"sale","acquired":false,"shares":143,"price":81.75,"value":11690.25,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F4","text":"Securities sold pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 17, 2021."},{"field":"price","element":"transactionPricePerShare","label":"F7","text":"Represents the weighted average sale price of multiple open market same day sales with prices ranging from $81.48 to $82.08 per share. Full information regarding the number of shares sold at each separate price will be provided to the Securities and Exchange Commission or a security holder of the issuer upon request."}],"balance_after":28327,"source":{"system":"sec-edgar","filing":"0001179110-22-001674","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000117911022001674/edgar.xml","form_type":"4"}},{"id":2369326,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2022-02-28T19:00:06.000Z","date":"2022-02-24","kind":"tax_withholding","acquired":false,"shares":257,"price":81.75,"value":21009.75,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F4","text":"Securities sold pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 17, 2021."},{"field":"shares","element":"transactionShares","label":"F5","text":"Represents securities delivered in payment of a tax liability with respect to vesting of securities issued in accordance with Rule 16b-3."},{"field":"price","element":"transactionPricePerShare","label":"F7","text":"Represents the weighted average sale price of multiple open market same day sales with prices ranging from $81.48 to $82.08 per share. Full information regarding the number of shares sold at each separate price will be provided to the Securities and Exchange Commission or a security holder of the issuer upon request."}],"balance_after":28470,"source":{"system":"sec-edgar","filing":"0001179110-22-001674","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000117911022001674/edgar.xml","form_type":"4"}},{"id":2369325,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2022-02-28T19:00:06.000Z","date":"2022-02-24","kind":"sale","acquired":false,"shares":339,"price":80.9,"value":27425.1,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F4","text":"Securities sold pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 17, 2021."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"Represents the weighted average sale price of multiple open market same day sales with prices ranging from $80.47 to $81.39 per share. Full information regarding the number of shares sold at each separate price will be provided to the Securities and Exchange Commission or a security holder of the issuer upon request."}],"balance_after":28727,"source":{"system":"sec-edgar","filing":"0001179110-22-001674","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000117911022001674/edgar.xml","form_type":"4"}},{"id":2369324,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2022-02-28T19:00:06.000Z","date":"2022-02-24","kind":"tax_withholding","acquired":false,"shares":611,"price":80.9,"value":49429.9,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F4","text":"Securities sold pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 17, 2021."},{"field":"shares","element":"transactionShares","label":"F5","text":"Represents securities delivered in payment of a tax liability with respect to vesting of securities issued in accordance with Rule 16b-3."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"Represents the weighted average sale price of multiple open market same day sales with prices ranging from $80.47 to $81.39 per share. Full information regarding the number of shares sold at each separate price will be provided to the Securities and Exchange Commission or a security holder of the issuer upon request."}],"balance_after":29066,"source":{"system":"sec-edgar","filing":"0001179110-22-001674","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000117911022001674/edgar.xml","form_type":"4"}},{"id":2369323,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2022-02-28T19:00:06.000Z","date":"2022-02-23","kind":"other","acquired":true,"shares":585,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","text":"Represents the difference between performance shares, with a three year performance period, that were granted on February 26, 2019 and actual shares earned at the end of the performance period on December 31, 2021. Final shares were approved by the Compensation Committee on February 23, 2022."}],"balance_after":29677,"source":{"system":"sec-edgar","filing":"0001179110-22-001674","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000117911022001674/edgar.xml","form_type":"4"}},{"id":2369322,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2022-02-28T19:00:06.000Z","date":"2022-02-23","kind":"grant","acquired":true,"shares":2273,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"Represents restricted stock awards granted effective February 23, 2022 with respect to which sale or transfer rights will vest over a three-year performance period commencing on January 1, 2022 and ending on December 31, 2024. Vesting of these shares is dependent upon the attainment of pre-established performance objectives, and any difference between shares granted and shares earned at the end of the performance period will be reported at the conclusion of the performance period in 2025."}],"balance_after":29092,"source":{"system":"sec-edgar","filing":"0001179110-22-001674","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000117911022001674/edgar.xml","form_type":"4"}},{"id":2369321,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2022-02-28T19:00:06.000Z","date":"2022-02-23","kind":"grant","acquired":true,"shares":1986,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents restricted stock awards effective February 23, 2022, with respect to which sale or transfer rights shall vest over three years with installments of 30% on February 23, 2023, 30% on February 23, 2024, and the remaining 40% on February 23, 2025, provided the grantee meets certain employment conditions."}],"balance_after":26819,"source":{"system":"sec-edgar","filing":"0001179110-22-001674","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000117911022001674/edgar.xml","form_type":"4"}},{"id":2821064,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2021-03-03T01:22:56.000Z","date":"2021-03-01","kind":"sale","acquired":false,"shares":52,"price":81.128,"value":4218.656,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F9","text":"Represents the weighted average sale price of multiple open market same day sales with prices ranging from $81.07 to $81.18 per share. Full information regarding the number of shares sold at each separate price will be provided to the Securities and Exchange Commission or a security holder of the issuer upon request."}],"balance_after":24833,"source":{"system":"sec-edgar","filing":"0001179110-21-002581","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":13,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000117911021002581/edgar.xml","form_type":"4"}},{"id":2821063,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2021-03-03T01:22:56.000Z","date":"2021-03-01","kind":"tax_withholding","acquired":false,"shares":92,"price":81.128,"value":7463.776,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F4","text":"Represents securities delivered in payment of a tax liability with respect to vesting of securities issued in accordance with Rule 16b-3."},{"field":"price","element":"transactionPricePerShare","label":"F9","text":"Represents the weighted average sale price of multiple open market same day sales with prices ranging from $81.07 to $81.18 per share. Full information regarding the number of shares sold at each separate price will be provided to the Securities and Exchange Commission or a security holder of the issuer upon request."}],"balance_after":24885,"source":{"system":"sec-edgar","filing":"0001179110-21-002581","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":12,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000117911021002581/edgar.xml","form_type":"4"}},{"id":2821062,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2021-03-03T01:22:56.000Z","date":"2021-03-01","kind":"sale","acquired":false,"shares":448,"price":80.668,"value":36139.264,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F8","text":"Represents the weighted average sale price of multiple open market same day sales with prices ranging from $80.00 to $80.95 per share. Full information regarding the number of shares sold at each separate price will be provided to the Securities and Exchange Commission or a security holder of the issuer upon request."}],"balance_after":24977,"source":{"system":"sec-edgar","filing":"0001179110-21-002581","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":11,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000117911021002581/edgar.xml","form_type":"4"}},{"id":2821061,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2021-03-03T01:22:56.000Z","date":"2021-03-01","kind":"tax_withholding","acquired":false,"shares":797,"price":80.668,"value":64292.396,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F4","text":"Represents securities delivered in payment of a tax liability with respect to vesting of securities issued in accordance with Rule 16b-3."},{"field":"price","element":"transactionPricePerShare","label":"F8","text":"Represents the weighted average sale price of multiple open market same day sales with prices ranging from $80.00 to $80.95 per share. Full information regarding the number of shares sold at each separate price will be provided to the Securities and Exchange Commission or a security holder of the issuer upon request."}],"balance_after":25425,"source":{"system":"sec-edgar","filing":"0001179110-21-002581","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":10,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000117911021002581/edgar.xml","form_type":"4"}},{"id":2821060,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2021-03-03T01:22:56.000Z","date":"2021-02-26","kind":"sale","acquired":false,"shares":396,"price":81.282,"value":32187.672,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F7","text":"Represents the weighted average sale price of multiple open market same day sales with prices ranging from $81.14 to $81.39 per share. Full information regarding the number of shares sold at each separate price will be provided to the Securities and Exchange Commission or a security holder of the issuer upon request."}],"balance_after":26222,"source":{"system":"sec-edgar","filing":"0001179110-21-002581","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":9,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000117911021002581/edgar.xml","form_type":"4"}},{"id":2821059,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2021-03-03T01:22:56.000Z","date":"2021-02-26","kind":"tax_withholding","acquired":false,"shares":705,"price":81.282,"value":57303.81,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F4","text":"Represents securities delivered in payment of a tax liability with respect to vesting of securities issued in accordance with Rule 16b-3."},{"field":"price","element":"transactionPricePerShare","label":"F7","text":"Represents the weighted average sale price of multiple open market same day sales with prices ranging from $81.14 to $81.39 per share. Full information regarding the number of shares sold at each separate price will be provided to the Securities and Exchange Commission or a security holder of the issuer upon request."}],"balance_after":26618,"source":{"system":"sec-edgar","filing":"0001179110-21-002581","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000117911021002581/edgar.xml","form_type":"4"}},{"id":2821058,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2021-03-03T01:22:56.000Z","date":"2021-02-26","kind":"sale","acquired":false,"shares":72,"price":80.18,"value":5772.96,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F6","text":"Represents the weighted average sale price of multiple open market same day sales with prices ranging from $80.06 to $80.30 per share. Full information regarding the number of shares sold at each separate price will be provided to the Securities and Exchange Commission or a security holder of the issuer upon request."}],"balance_after":27323,"source":{"system":"sec-edgar","filing":"0001179110-21-002581","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000117911021002581/edgar.xml","form_type":"4"}},{"id":2821057,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2021-03-03T01:22:56.000Z","date":"2021-02-26","kind":"tax_withholding","acquired":false,"shares":129,"price":80.18,"value":10343.22,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F4","text":"Represents securities delivered in payment of a tax liability with respect to vesting of securities issued in accordance with Rule 16b-3."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"Represents the weighted average sale price of multiple open market same day sales with prices ranging from $80.06 to $80.30 per share. Full information regarding the number of shares sold at each separate price will be provided to the Securities and Exchange Commission or a security holder of the issuer upon request."}],"balance_after":27395,"source":{"system":"sec-edgar","filing":"0001179110-21-002581","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000117911021002581/edgar.xml","form_type":"4"}},{"id":2821056,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2021-03-03T01:22:56.000Z","date":"2021-02-26","kind":"sale","acquired":false,"shares":673,"price":79.57,"value":53550.61,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F5","text":"Represents the weighted average sale price of multiple open market same day sales with prices ranging from $79.05 to $80.02 per share. Full information regarding the number of shares sold at each separate price will be provided to the Securities and Exchange Commission or a security holder of the issuer upon request."}],"balance_after":27524,"source":{"system":"sec-edgar","filing":"0001179110-21-002581","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000117911021002581/edgar.xml","form_type":"4"}},{"id":2821055,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2021-03-03T01:22:56.000Z","date":"2021-02-26","kind":"tax_withholding","acquired":false,"shares":1197,"price":79.57,"value":95245.29,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F4","text":"Represents securities delivered in payment of a tax liability with respect to vesting of securities issued in accordance with Rule 16b-3."},{"field":"price","element":"transactionPricePerShare","label":"F5","text":"Represents the weighted average sale price of multiple open market same day sales with prices ranging from $79.05 to $80.02 per share. Full information regarding the number of shares sold at each separate price will be provided to the Securities and Exchange Commission or a security holder of the issuer upon request."}],"balance_after":28197,"source":{"system":"sec-edgar","filing":"0001179110-21-002581","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000117911021002581/edgar.xml","form_type":"4"}},{"id":2821054,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2021-03-03T01:22:56.000Z","date":"2021-02-24","kind":"other","acquired":true,"shares":1866,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","text":"Represents the difference between performance shares, with a three year performance period, that were granted on February 26, 2018 and actual shares earned at the end of the performance period on December 31, 2020. Final shares were approved by the Compensation Committee on February 24, 2021."}],"balance_after":29394,"source":{"system":"sec-edgar","filing":"0001179110-21-002581","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000117911021002581/edgar.xml","form_type":"4"}},{"id":2821053,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2021-03-03T01:22:56.000Z","date":"2021-02-24","kind":"grant","acquired":true,"shares":2805,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Represents restricted stock awards granted effective February 24, 2021 with respect to which sale or transfer rights will vest over a three-year performance period commencing on January 1, 2021 and ending on December 31, 2023. Vesting of these shares is dependent upon the attainment of pre-established performance objectives, and any difference between shares granted and shares earned at the end of the performance period will be reported at the conclusion of the performance period in 2024."}],"balance_after":27528,"source":{"system":"sec-edgar","filing":"0001179110-21-002581","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000117911021002581/edgar.xml","form_type":"4"}},{"id":2821052,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2021-03-03T01:22:56.000Z","date":"2021-02-24","kind":"grant","acquired":true,"shares":2271,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Represents restricted stock awards effective February 24, 2021, with respect to which sale or transfer rights shall vest over three years with installments of 30% on February 24, 2022, 30% on February 24, 2023, and the remaining 40% on February 24, 2024, provided the grantee meets certain employment conditions."}],"balance_after":24723,"source":{"system":"sec-edgar","filing":"0001179110-21-002581","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000117911021002581/edgar.xml","form_type":"4"}},{"id":3238677,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2020-03-02T21:01:51.000Z","date":"2020-02-28","kind":"tax_withholding","acquired":false,"shares":420,"price":80.894,"value":33975.48,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F4","text":"Represents securities delivered in payment of a tax liability with respect to vesting of securities issued in accordance with Rule 16b-3."},{"field":"price","element":"transactionPricePerShare","label":"F13","text":"Represents the weighted average sale price of multiple open market same day sales with prices ranging from $80.77 to $81.00 per share. Full information regarding the number of shares sold at each separate price will be provided to the Securities and Exchange Commission or a security holder of the issuer upon request."}],"balance_after":22452,"source":{"system":"sec-edgar","filing":"0001179110-20-002681","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":12,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000117911020002681/edgar.xml","form_type":"4"}},{"id":3238676,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2020-03-02T21:01:51.000Z","date":"2020-02-28","kind":"tax_withholding","acquired":false,"shares":620,"price":80.135,"value":49683.7,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F4","text":"Represents securities delivered in payment of a tax liability with respect to vesting of securities issued in accordance with Rule 16b-3."},{"field":"price","element":"transactionPricePerShare","label":"F12","text":"Represents the weighted average sale price of multiple open market same day sales with prices ranging from $79.70 to $80.69 per share. Full information regarding the number of shares sold at each separate price will be provided to the Securities and Exchange Commission or a security holder of the issuer upon request."}],"balance_after":22872,"source":{"system":"sec-edgar","filing":"0001179110-20-002681","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":11,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000117911020002681/edgar.xml","form_type":"4"}},{"id":3238675,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2020-03-02T21:01:51.000Z","date":"2020-02-28","kind":"tax_withholding","acquired":false,"shares":468,"price":79.116,"value":37026.288,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F4","text":"Represents securities delivered in payment of a tax liability with respect to vesting of securities issued in accordance with Rule 16b-3."},{"field":"price","element":"transactionPricePerShare","label":"F11","text":"Represents the weighted average sale price of multiple open market same day sales with prices ranging from $78.65 to $79.58 per share. Full information regarding the number of shares sold at each separate price will be provided to the Securities and Exchange Commission or a security holder of the issuer upon request."}],"balance_after":23492,"source":{"system":"sec-edgar","filing":"0001179110-20-002681","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":10,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000117911020002681/edgar.xml","form_type":"4"}},{"id":3238674,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2020-03-02T21:01:51.000Z","date":"2020-02-27","kind":"tax_withholding","acquired":false,"shares":143,"price":88.891,"value":12711.413,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F4","text":"Represents securities delivered in payment of a tax liability with respect to vesting of securities issued in accordance with Rule 16b-3."},{"field":"price","element":"transactionPricePerShare","label":"F10","text":"Represents the weighted average sale price of multiple open market same day sales with prices ranging from $88.69 to $89.59 per share. Full information regarding the number of shares sold at each separate price will be provided to the Securities and Exchange Commission or a security holder of the issuer upon request."}],"balance_after":23960,"source":{"system":"sec-edgar","filing":"0001179110-20-002681","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":9,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000117911020002681/edgar.xml","form_type":"4"}},{"id":3238673,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2020-03-02T21:01:51.000Z","date":"2020-02-27","kind":"tax_withholding","acquired":false,"shares":100,"price":87.778,"value":8777.8,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F4","text":"Represents securities delivered in payment of a tax liability with respect to vesting of securities issued in accordance with Rule 16b-3."},{"field":"price","element":"transactionPricePerShare","label":"F9","text":"Represents the weighted average sale price of multiple open market same day sales with prices ranging from $87.57 to $87.84 per share. Full information regarding the number of shares sold at each separate price will be provided to the Securities and Exchange Commission or a security holder of the issuer upon request."}],"balance_after":24103,"source":{"system":"sec-edgar","filing":"0001179110-20-002681","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000117911020002681/edgar.xml","form_type":"4"}},{"id":3238672,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2020-03-02T21:01:51.000Z","date":"2020-02-27","kind":"tax_withholding","acquired":false,"shares":197,"price":86.96,"value":17131.12,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F4","text":"Represents securities delivered in payment of a tax liability with respect to vesting of securities issued in accordance with Rule 16b-3."},{"field":"price","element":"transactionPricePerShare","label":"F8","text":"Represents the weighted average sale price of multiple open market same day sales with prices ranging from $86.44 to $87.43 per share. Full information regarding the number of shares sold at each separate price will be provided to the Securities and Exchange Commission or a security holder of the issuer upon request."}],"balance_after":24203,"source":{"system":"sec-edgar","filing":"0001179110-20-002681","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000117911020002681/edgar.xml","form_type":"4"}},{"id":3238671,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2020-03-02T21:01:51.000Z","date":"2020-02-27","kind":"tax_withholding","acquired":false,"shares":82,"price":85.406,"value":7003.292,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F4","text":"Represents securities delivered in payment of a tax liability with respect to vesting of securities issued in accordance with Rule 16b-3."},{"field":"price","element":"transactionPricePerShare","label":"F7","text":"Represents the weighted average sale price of multiple open market same day sales with prices ranging from $85.10 to $85.63 per share. Full information regarding the number of shares sold at each separate price will be provided to the Securities and Exchange Commission or a security holder of the issuer upon request."}],"balance_after":24400,"source":{"system":"sec-edgar","filing":"0001179110-20-002681","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000117911020002681/edgar.xml","form_type":"4"}},{"id":3238670,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2020-03-02T21:01:51.000Z","date":"2020-02-26","kind":"tax_withholding","acquired":false,"shares":69,"price":90.936,"value":6274.584,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F4","text":"Represents securities delivered in payment of a tax liability with respect to vesting of securities issued in accordance with Rule 16b-3."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"Represents the weighted average sale price of multiple open market same day sales with prices ranging from $90.62 to $91.07 per share. Full information regarding the number of shares sold at each separate price will be provided to the Securities and Exchange Commission or a security holder of the issuer upon request."}],"balance_after":24482,"source":{"system":"sec-edgar","filing":"0001179110-20-002681","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000117911020002681/edgar.xml","form_type":"4"}},{"id":3238669,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2020-03-02T21:01:51.000Z","date":"2020-02-26","kind":"tax_withholding","acquired":false,"shares":284,"price":89.906,"value":25533.304,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F4","text":"Represents securities delivered in payment of a tax liability with respect to vesting of securities issued in accordance with Rule 16b-3."},{"field":"price","element":"transactionPricePerShare","label":"F5","text":"Represents the weighted average sale price of multiple open market same day sales with prices ranging from $89.58 to $90.29 per share. Full information regarding the number of shares sold at each separate price will be provided to the Securities and Exchange Commission or a security holder of the issuer upon request."}],"balance_after":24551,"source":{"system":"sec-edgar","filing":"0001179110-20-002681","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000117911020002681/edgar.xml","form_type":"4"}},{"id":3238668,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2020-03-02T21:01:51.000Z","date":"2020-02-26","kind":"other","acquired":true,"shares":1016,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","text":"Represents the difference between performance shares, with a three year performance period, that were granted on February 22, 2017 and actual shares earned at the end of the performance period on December 31, 2019. Final shares were approved by the Compensation Committee on February 26, 2020."}],"balance_after":24835,"source":{"system":"sec-edgar","filing":"0001179110-20-002681","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000117911020002681/edgar.xml","form_type":"4"}},{"id":3238667,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2020-03-02T21:01:51.000Z","date":"2020-02-26","kind":"grant","acquired":true,"shares":2402,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Represents restricted stock awards granted effective February 26, 2020 with respect to which sale or transfer rights will vest over a three-year performance period commencing on January 1, 2020 and ending on December 31, 2022. Vesting of these shares is dependent upon the attainment of pre-established performance objectives, and any difference between shares granted and shares earned at the end of the performance period will be reported at the conclusion of the performance period in 2023."}],"balance_after":23819,"source":{"system":"sec-edgar","filing":"0001179110-20-002681","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000117911020002681/edgar.xml","form_type":"4"}},{"id":3238666,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2020-03-02T21:01:51.000Z","date":"2020-02-26","kind":"grant","acquired":true,"shares":1989,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Represents restricted stock awards effective February 26, 2020, with respect to which sale or transfer rights shall vest over three years with installments of 30% on February 26, 2021, 30% on February 26, 2022, and the remaining 40% on February 26, 2023, provided the grantee meets certain employment conditions."}],"balance_after":21417,"source":{"system":"sec-edgar","filing":"0001179110-20-002681","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000117911020002681/edgar.xml","form_type":"4"}},{"id":3358942,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2019-11-26T11:18:20.000Z","date":"2019-11-25","kind":"sale","acquired":false,"shares":900,"price":98.25,"value":88425.0,"ownership":{"direct":true},"balance_after":19428,"source":{"system":"sec-edgar","filing":"0001179110-19-012053","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000117911019012053/edgar.xml","form_type":"4"}},{"id":3578559,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2019-03-26T18:15:49.000Z","date":"2019-03-25","kind":"tax_withholding","acquired":false,"shares":63,"price":86.682,"value":5460.966,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents securities delivered in payment of a tax liability with respect to vesting of securities issued in accordance with Rule 16b-3."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Represents the weighted average sale price of multiple open market same day sales with prices ranging from $86.38 to $86.95 per share. Full information regarding the number of shares sold at each separate price will be provided to the Securities and Exchange Commission or a security holder of the issuer upon request."}],"balance_after":20328,"source":{"system":"sec-edgar","filing":"0001179110-19-004278","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000117911019004278/edgar.xml","form_type":"4"}},{"id":3608869,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2019-03-06T18:54:33.000Z","date":"2019-03-05","kind":"tax_withholding","acquired":false,"shares":945,"price":87.912,"value":83076.84,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents securities delivered in payment of a tax liability with respect to vesting of securities issued in accordance with Rule 16b-3."},{"field":"price","element":"transactionPricePerShare","label":"F5","text":"Represents the weighted average sale price of multiple open market same day sales with prices ranging from $87.50 to $88.50 per share. Full information regarding the number of shares sold at each separate price will be provided to the Securities and Exchange Commission or a security holder of the issuer upon request."}],"balance_after":20391,"source":{"system":"sec-edgar","filing":"0001179110-19-003398","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000117911019003398/edgar.xml","form_type":"4"}},{"id":3608868,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2019-03-06T18:54:33.000Z","date":"2019-03-04","kind":"tax_withholding","acquired":false,"shares":129,"price":89.399,"value":11532.471,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents securities delivered in payment of a tax liability with respect to vesting of securities issued in accordance with Rule 16b-3."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"Represents the weighted average sale price of multiple open market same day sales with prices ranging from $89.260 to $90.250 per share. Full information regarding the number of shares sold at each separate price will be provided to the Securities and Exchange Commission or a security holder of the issuer upon request."}],"balance_after":21336,"source":{"system":"sec-edgar","filing":"0001179110-19-003398","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000117911019003398/edgar.xml","form_type":"4"}},{"id":3608867,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2019-03-06T18:54:33.000Z","date":"2019-03-04","kind":"tax_withholding","acquired":false,"shares":801,"price":89.051,"value":71329.851,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents securities delivered in payment of a tax liability with respect to vesting of securities issued in accordance with Rule 16b-3."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Represents the weighted average sale price of multiple open market same day sales with prices ranging from $89.000 to $89.190 per share. Full information regarding the number of shares sold at each separate price will be provided to the Securities and Exchange Commission or a security holder of the issuer upon request."}],"balance_after":21465,"source":{"system":"sec-edgar","filing":"0001179110-19-003398","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000117911019003398/edgar.xml","form_type":"4"}},{"id":3608866,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2019-03-06T18:54:33.000Z","date":"2019-03-01","kind":"tax_withholding","acquired":false,"shares":1302,"price":89.018,"value":115901.436,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents securities delivered in payment of a tax liability with respect to vesting of securities issued in accordance with Rule 16b-3."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Represents the weighted average sale price of multiple open market same day sales with prices ranging from $88.665 to $89.265 per share. Full information regarding the number of shares sold at each separate price will be provided to the Securities and Exchange Commission or a security holder of the issuer upon request."}],"balance_after":22266,"source":{"system":"sec-edgar","filing":"0001179110-19-003398","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000117911019003398/edgar.xml","form_type":"4"}},{"id":3619593,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2019-03-04T11:05:17.000Z","date":"2019-02-26","kind":"other","acquired":true,"shares":2266,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","text":"Represents the difference between performance shares, with a three year performance period, that were granted on February 23, 2016 and actual shares earned at the end of the performance period on December 31, 2018. Final shares were approved by the Compensation Committee on February 26, 2019."}],"balance_after":23568,"source":{"system":"sec-edgar","filing":"0001179110-19-002959","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000117911019002959/edgar.xml","form_type":"4"}},{"id":3619592,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2019-03-04T11:05:17.000Z","date":"2019-02-26","kind":"grant","acquired":true,"shares":2091,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Represents restricted stock awards granted effective February 26, 2019 with respect to which sale or transfer rights will vest over a three-year performance period commencing on January 1, 2019 and ending on December 31, 2021. Vesting of these shares is dependent upon the attainment of pre-established performance objectives, and any difference between shares granted and shares earned at the end of the performance period will be reported at the conclusion of the performance period in 2022."}],"balance_after":21302,"source":{"system":"sec-edgar","filing":"0001179110-19-002959","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000117911019002959/edgar.xml","form_type":"4"}},{"id":3619591,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2019-03-04T11:05:17.000Z","date":"2019-02-26","kind":"grant","acquired":true,"shares":1824,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Represents restricted stock awards effective February 26, 2019, with respect to which sale or transfer rights shall vest over three years with installments of 30% on February 26, 2020, 30% on February 26, 2021, and the remaining 40% on February 26, 2022, provided the grantee meets certain employment conditions."}],"balance_after":19211,"source":{"system":"sec-edgar","filing":"0001179110-19-002959","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000117911019002959/edgar.xml","form_type":"4"}},{"id":3980992,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2018-03-29T00:45:41.000Z","date":"2018-03-28","kind":"tax_withholding","acquired":false,"shares":130,"price":76.5099,"value":9946.287,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents securities delivered in payment of a tax liability with respect to vesting of securities issued in accordance with Rule 16b-3."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Represents the weighted average sale price of multiple open market same day sales with prices ranging from $75.900 to $76.725 per share. Full information regarding the number of shares sold at each separate price will be provided to the Securities and Exchange Commission or a security holder of the issuer upon request."}],"balance_after":17387,"source":{"system":"sec-edgar","filing":"0001179110-18-004901","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000117911018004901/edgar.xml","form_type":"4"}},{"id":4027615,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2018-03-01T02:05:45.000Z","date":"2018-02-27","kind":"tax_withholding","acquired":false,"shares":435,"price":74.3763,"value":32353.6905,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F4","text":"Represents securities delivered in payment of a tax liability with respect to vesting of securities issued in accordance with Rule 16b-3."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"Represents the weighted average sale price of multiple open market same day sales with prices ranging from $74.00 to $74.80 per share. Full information regarding the number of shares sold at each separate price will be provided to the Securities and Exchange Commission or a security holder of the issuer upon request."}],"balance_after":17517,"source":{"system":"sec-edgar","filing":"0001179110-18-003081","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000117911018003081/edgar.xml","form_type":"4"}},{"id":4027614,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2018-03-01T02:05:45.000Z","date":"2018-02-27","kind":"tax_withholding","acquired":false,"shares":1188,"price":73.2202,"value":86985.5976,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F4","text":"Represents securities delivered in payment of a tax liability with respect to vesting of securities issued in accordance with Rule 16b-3."},{"field":"price","element":"transactionPricePerShare","label":"F5","text":"Represents the weighted average sale price of multiple open market same day sales with prices ranging from $72.80 to $73.80 per share. Full information regarding the number of shares sold at each separate price will be provided to the Securities and Exchange Commission or a security holder of the issuer upon request."}],"balance_after":17952,"source":{"system":"sec-edgar","filing":"0001179110-18-003081","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000117911018003081/edgar.xml","form_type":"4"}},{"id":4027613,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2018-03-01T02:05:45.000Z","date":"2018-02-26","kind":"other","acquired":false,"shares":262,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","text":"Represents the difference between performance shares, with a three year performance period, that were granted on February 24, 2015 and actual shares earned at the end of the performance period on December 31, 2017. Final shares were approved by the Compensation Committee on February 26, 2018."}],"balance_after":19140,"source":{"system":"sec-edgar","filing":"0001179110-18-003081","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000117911018003081/edgar.xml","form_type":"4"}},{"id":4027612,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2018-03-01T02:05:45.000Z","date":"2018-02-26","kind":"grant","acquired":true,"shares":2666,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Represents restricted stock awards granted effective February 26, 2018 with respect to which sale or transfer rights will vest over a three-year performance period commencing on January 1, 2018 and ending on December 31, 2020. Vesting of these shares is dependent upon the attainment of pre-established performance objectives, and any difference between shares granted and shares earned at the end of the performance period will be reported at the conclusion of the performance period in 2021."}],"balance_after":19402,"source":{"system":"sec-edgar","filing":"0001179110-18-003081","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000117911018003081/edgar.xml","form_type":"4"}},{"id":4027611,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2018-03-01T02:05:45.000Z","date":"2018-02-26","kind":"grant","acquired":true,"shares":2099,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Represents restricted stock awards effective February 26, 2018, with respect to which sale or transfer rights shall vest over three years with installments of 30% on February 26, 2019, 30% on February 26, 2020, and the remaining 40% on February 26, 2021, provided the grantee meets certain employment conditions."}],"balance_after":16736,"source":{"system":"sec-edgar","filing":"0001179110-18-003081","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000117911018003081/edgar.xml","form_type":"4"}},{"id":4369399,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2017-03-29T15:27:12.000Z","date":"2017-03-28","kind":"tax_withholding","acquired":false,"shares":204,"price":68.5234,"value":13978.7736,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents securities delivered in payment of a tax liability with respect to vesting of securities issued in accordance with Rule 16b-3."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Represents the weighted average sale price of multiple open market same day sales with prices ranging from $68.15 to $68.70 per share. Full information regarding the number of shares sold at each separate price will be provided to the Securities and Exchange Commission or a security holder of the issuer upon request."}],"balance_after":14637,"source":{"system":"sec-edgar","filing":"0001179110-17-005196","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000117911017005196/edgar.xml","form_type":"4"}},{"id":4388916,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2017-03-13T18:28:04.000Z","date":"2017-03-13","kind":"tax_withholding","acquired":false,"shares":315,"price":69.7689,"value":21977.2035,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents securities delivered in payment of a tax liability with respect to vesting of securities issued in accordance with Rule 16b-3."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Represents the weighted average sale price of multiple open market same day sales with prices ranging from $69.65 to $69.875 per share. Full information regarding the number of shares sold at each separate price will be provided to the Securities and Exchange Commission or a security holder of the issuer upon request."}],"balance_after":14841,"source":{"system":"sec-edgar","filing":"0001179110-17-004472","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000117911017004472/edgar.xml","form_type":"4"}},{"id":4421917,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2017-02-28T02:05:14.000Z","date":"2017-02-27","kind":"tax_withholding","acquired":false,"shares":87,"price":72.2813,"value":6288.4731,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F4","text":"Represents securities delivered in payment of a tax liability with respect to vesting of securities issued in accordance with Rule 16b-3."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"Represents the weighted average sale price of multiple open market same day sales with prices ranging from $72.10 to $72.40 per share. Full information regarding the number of shares sold at each separate price will be provided to the Securities and Exchange Commission or a security holder of the issuer upon request."}],"balance_after":15156,"source":{"system":"sec-edgar","filing":"0001179110-17-003348","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000117911017003348/edgar.xml","form_type":"4"}},{"id":4421916,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2017-02-28T02:05:14.000Z","date":"2017-02-27","kind":"tax_withholding","acquired":false,"shares":1317,"price":71.4537,"value":94104.5229,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F4","text":"Represents securities delivered in payment of a tax liability with respect to vesting of securities issued in accordance with Rule 16b-3."},{"field":"price","element":"transactionPricePerShare","label":"F5","text":"Represents the weighted average sale price of multiple open market same day sales with prices ranging from $71.05 to $72.05 per share. Full information regarding the number of shares sold at each separate price will be provided to the Securities and Exchange Commission or a security holder of the issuer upon request."}],"balance_after":15243,"source":{"system":"sec-edgar","filing":"0001179110-17-003348","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000117911017003348/edgar.xml","form_type":"4"}},{"id":4421915,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2017-02-28T02:05:14.000Z","date":"2017-02-22","kind":"other","acquired":false,"shares":55,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Represents the difference between performance shares, with a three year performance period, that were granted on March 11, 2014 and actual shares earned at the end of the performance period on December 31, 2016. Final shares were approved by the Compensation Committee on February 22, 2017."}],"balance_after":16560,"source":{"system":"sec-edgar","filing":"0001179110-17-003348","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000117911017003348/edgar.xml","form_type":"4"}},{"id":4421914,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63468,"kind":"person","name":"Varga Stephen Albert","position":1,"cik":"0001616287","reported_name":"Varga Stephen Albert","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP - MIS"}}],"security":"Common Stock","published_at":"2017-02-28T02:05:14.000Z","date":"2017-02-22","kind":"grant","acquired":true,"shares":2384,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Represents restricted stock awards granted effective February 22, 2017 with respect to which sale or transfer rights will vest over a three-year performance period commencing on January 1, 2017 and ending on December 31, 2019. Vesting of these shares is dependent upon the attainment of pre-established performance objectives, and any difference between shares granted and shares earned at the end of the performance period will be reported at the conclusion of the performance period in 2020."}],"balance_after":16615,"source":{"system":"sec-edgar","filing":"0001179110-17-003348","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000117911017003348/edgar.xml","form_type":"4"}}],"next_cursor":"2017-02-28T02:05:14.000000Z,4421914"}