{"transactions":[{"id":869295,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63471,"kind":"person","name":"Lam Brian Siu-Gae","position":1,"cik":"0002017175","reported_name":"Lam Brian Siu-Gae","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP of Insurance Operations"}}],"security":"Common Stock","published_at":"2026-03-03T22:48:11.000Z","date":"2026-03-02","kind":"tax_withholding","planned":true,"acquired":false,"shares":176,"price":76.89,"value":13532.64,"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 September 25, 2025."},{"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":"F11","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":9101,"source":{"system":"sec-edgar","filing":"0002017175-26-000001","document":"form4-03032026_100308.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":9,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000201717526000001/form4-03032026_100308.xml","form_type":"4"}},{"id":869294,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63471,"kind":"person","name":"Lam Brian Siu-Gae","position":1,"cik":"0002017175","reported_name":"Lam Brian Siu-Gae","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP of Insurance Operations"}}],"security":"Common Stock","published_at":"2026-03-03T22:48:11.000Z","date":"2026-03-02","kind":"tax_withholding","planned":true,"acquired":false,"shares":17,"price":76.18,"value":1295.06,"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 September 25, 2025."},{"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":"F10","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":9277,"source":{"system":"sec-edgar","filing":"0002017175-26-000001","document":"form4-03032026_100308.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000201717526000001/form4-03032026_100308.xml","form_type":"4"}},{"id":869293,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63471,"kind":"person","name":"Lam Brian Siu-Gae","position":1,"cik":"0002017175","reported_name":"Lam Brian Siu-Gae","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP of Insurance Operations"}}],"security":"Common Stock","published_at":"2026-03-03T22:48:11.000Z","date":"2026-02-27","kind":"tax_withholding","planned":true,"acquired":false,"shares":142,"price":77.49,"value":11003.58,"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 September 25, 2025."},{"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":"F9","text":"Represents the weighted average sale price of multiple open market same day sales with prices ranging from $77.20 to $77.73 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":9294,"source":{"system":"sec-edgar","filing":"0002017175-26-000001","document":"form4-03032026_100308.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000201717526000001/form4-03032026_100308.xml","form_type":"4"}},{"id":869292,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63471,"kind":"person","name":"Lam Brian Siu-Gae","position":1,"cik":"0002017175","reported_name":"Lam Brian Siu-Gae","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP of Insurance Operations"}}],"security":"Common Stock","published_at":"2026-03-03T22:48:11.000Z","date":"2026-02-27","kind":"tax_withholding","planned":true,"acquired":false,"shares":70,"price":76.78,"value":5374.6,"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 September 25, 2025."},{"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 $76.10 to $77.09 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":9436,"source":{"system":"sec-edgar","filing":"0002017175-26-000001","document":"form4-03032026_100308.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000201717526000001/form4-03032026_100308.xml","form_type":"4"}},{"id":869291,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63471,"kind":"person","name":"Lam Brian Siu-Gae","position":1,"cik":"0002017175","reported_name":"Lam Brian Siu-Gae","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP of Insurance Operations"}}],"security":"Common Stock","published_at":"2026-03-03T22:48:11.000Z","date":"2026-02-24","kind":"tax_withholding","planned":true,"acquired":false,"shares":8,"price":77.42,"value":619.36,"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 September 25, 2025."},{"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 $77.32 to $77.54 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":9506,"source":{"system":"sec-edgar","filing":"0002017175-26-000001","document":"form4-03032026_100308.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000201717526000001/form4-03032026_100308.xml","form_type":"4"}},{"id":869290,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63471,"kind":"person","name":"Lam Brian Siu-Gae","position":1,"cik":"0002017175","reported_name":"Lam Brian Siu-Gae","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP of Insurance Operations"}}],"security":"Common Stock","published_at":"2026-03-03T22:48:11.000Z","date":"2026-02-24","kind":"tax_withholding","planned":true,"acquired":false,"shares":38,"price":76.95,"value":2924.1,"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 September 25, 2025."},{"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 $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":9514,"source":{"system":"sec-edgar","filing":"0002017175-26-000001","document":"form4-03032026_100308.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000201717526000001/form4-03032026_100308.xml","form_type":"4"}},{"id":869289,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63471,"kind":"person","name":"Lam Brian Siu-Gae","position":1,"cik":"0002017175","reported_name":"Lam Brian Siu-Gae","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP of Insurance Operations"}}],"security":"Common Stock","published_at":"2026-03-03T22:48:11.000Z","date":"2026-02-25","kind":"grant","planned":true,"acquired":true,"shares":1982,"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":9552,"source":{"system":"sec-edgar","filing":"0002017175-26-000001","document":"form4-03032026_100308.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000201717526000001/form4-03032026_100308.xml","form_type":"4"}},{"id":869288,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63471,"kind":"person","name":"Lam Brian Siu-Gae","position":1,"cik":"0002017175","reported_name":"Lam Brian Siu-Gae","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP of Insurance Operations"}}],"security":"Common Stock","published_at":"2026-03-03T22:48:11.000Z","date":"2026-02-25","kind":"grant","planned":true,"acquired":true,"shares":1721,"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":7570,"source":{"system":"sec-edgar","filing":"0002017175-26-000001","document":"form4-03032026_100308.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000201717526000001/form4-03032026_100308.xml","form_type":"4"}},{"id":869287,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63471,"kind":"person","name":"Lam Brian Siu-Gae","position":1,"cik":"0002017175","reported_name":"Lam Brian Siu-Gae","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP of Insurance Operations"}}],"security":"Common Stock","published_at":"2026-03-03T22:48:11.000Z","date":"2026-02-25","kind":"other","planned":true,"acquired":false,"shares":249,"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":5849,"source":{"system":"sec-edgar","filing":"0002017175-26-000001","document":"form4-03032026_100308.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000201717526000001/form4-03032026_100308.xml","form_type":"4"}},{"id":1230475,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63471,"kind":"person","name":"Lam Brian Siu-Gae","position":1,"cik":"0002017175","reported_name":"Lam Brian Siu-Gae","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP of Insurance Operations"}}],"security":"Common Stock","published_at":"2025-03-04T18:40:36.000Z","date":"2025-02-28","kind":"tax_withholding","planned":true,"acquired":false,"shares":93,"price":76.36,"value":7101.48,"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 September 12, 2024."},{"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":"F10","text":"Represents the weighted average sale price of multiple open market same day sales with prices ranging from $75.65 to $76.65 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":6098,"source":{"system":"sec-edgar","filing":"0001415889-25-006435","document":"form4-03042025_060332.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":9,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000141588925006435/form4-03042025_060332.xml","form_type":"4"}},{"id":1230474,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63471,"kind":"person","name":"Lam Brian Siu-Gae","position":1,"cik":"0002017175","reported_name":"Lam Brian Siu-Gae","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP of Insurance Operations"}}],"security":"Common Stock","published_at":"2025-03-04T18:40:36.000Z","date":"2025-02-28","kind":"tax_withholding","planned":true,"acquired":false,"shares":99,"price":75.5,"value":7474.5,"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 September 12, 2024."},{"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":"F9","text":"Represents the weighted average sale price of multiple open market same day sales with prices ranging from $75.40 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":6191,"source":{"system":"sec-edgar","filing":"0001415889-25-006435","document":"form4-03042025_060332.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000141588925006435/form4-03042025_060332.xml","form_type":"4"}},{"id":1230473,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63471,"kind":"person","name":"Lam Brian Siu-Gae","position":1,"cik":"0002017175","reported_name":"Lam Brian Siu-Gae","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP of Insurance Operations"}}],"security":"Common Stock","published_at":"2025-03-04T18:40:36.000Z","date":"2025-02-27","kind":"tax_withholding","planned":true,"acquired":false,"shares":49,"price":75.92,"value":3720.08,"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 September 12, 2024."},{"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 $75.43 to $76.20 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":6290,"source":{"system":"sec-edgar","filing":"0001415889-25-006435","document":"form4-03042025_060332.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000141588925006435/form4-03042025_060332.xml","form_type":"4"}},{"id":1230472,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63471,"kind":"person","name":"Lam Brian Siu-Gae","position":1,"cik":"0002017175","reported_name":"Lam Brian Siu-Gae","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP of Insurance Operations"}}],"security":"Common Stock","published_at":"2025-03-04T18:40:36.000Z","date":"2025-02-25","kind":"tax_withholding","planned":true,"acquired":false,"shares":72,"price":79.52,"value":5725.44,"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 September 12, 2024."},{"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 $79.15 to $79.95 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":6339,"source":{"system":"sec-edgar","filing":"0001415889-25-006435","document":"form4-03042025_060332.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000141588925006435/form4-03042025_060332.xml","form_type":"4"}},{"id":1230471,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63471,"kind":"person","name":"Lam Brian Siu-Gae","position":1,"cik":"0002017175","reported_name":"Lam Brian Siu-Gae","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP of Insurance Operations"}}],"security":"Common Stock","published_at":"2025-03-04T18:40:36.000Z","date":"2025-02-25","kind":"tax_withholding","planned":true,"acquired":false,"shares":8,"price":78.51,"value":628.08,"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 September 12, 2024."},{"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 $78.40 to $78.72 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":6411,"source":{"system":"sec-edgar","filing":"0001415889-25-006435","document":"form4-03042025_060332.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000141588925006435/form4-03042025_060332.xml","form_type":"4"}},{"id":1230470,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63471,"kind":"person","name":"Lam Brian Siu-Gae","position":1,"cik":"0002017175","reported_name":"Lam Brian Siu-Gae","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP of Insurance Operations"}}],"security":"Common Stock","published_at":"2025-03-04T18:40:36.000Z","date":"2025-02-25","kind":"tax_withholding","planned":true,"acquired":false,"shares":1,"price":77.48,"value":77.48,"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 September 12, 2024."},{"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":6419,"source":{"system":"sec-edgar","filing":"0001415889-25-006435","document":"form4-03042025_060332.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000141588925006435/form4-03042025_060332.xml","form_type":"4"}},{"id":1230469,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63471,"kind":"person","name":"Lam Brian Siu-Gae","position":1,"cik":"0002017175","reported_name":"Lam Brian Siu-Gae","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP of Insurance Operations"}}],"security":"Common Stock","published_at":"2025-03-04T18:40:36.000Z","date":"2025-02-25","kind":"grant","planned":true,"acquired":true,"shares":1656,"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":6420,"source":{"system":"sec-edgar","filing":"0001415889-25-006435","document":"form4-03042025_060332.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000141588925006435/form4-03042025_060332.xml","form_type":"4"}},{"id":1230468,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63471,"kind":"person","name":"Lam Brian Siu-Gae","position":1,"cik":"0002017175","reported_name":"Lam Brian Siu-Gae","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP of Insurance Operations"}}],"security":"Common Stock","published_at":"2025-03-04T18:40:36.000Z","date":"2025-02-25","kind":"grant","planned":true,"acquired":true,"shares":1412,"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":4764,"source":{"system":"sec-edgar","filing":"0001415889-25-006435","document":"form4-03042025_060332.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000141588925006435/form4-03042025_060332.xml","form_type":"4"}},{"id":1230467,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63471,"kind":"person","name":"Lam Brian Siu-Gae","position":1,"cik":"0002017175","reported_name":"Lam Brian Siu-Gae","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP of Insurance Operations"}}],"security":"Common Stock","published_at":"2025-03-04T18:40:36.000Z","date":"2025-02-25","kind":"other","planned":true,"acquired":false,"shares":166,"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":3352,"source":{"system":"sec-edgar","filing":"0001415889-25-006435","document":"form4-03042025_060332.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000141588925006435/form4-03042025_060332.xml","form_type":"4"}},{"id":1399057,"issuer":{"id":4681,"kind":"organization","name":"SAFETY INSURANCE GROUP INC"},"owners":[{"id":63471,"kind":"person","name":"Lam Brian Siu-Gae","position":1,"cik":"0002017175","reported_name":"Lam Brian Siu-Gae","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP of Insurance Operations"}}],"security":"Common Stock","published_at":"2024-09-26T15:40:55.000Z","date":"2024-09-25","kind":"sale","planned":false,"acquired":false,"shares":226,"price":81.46,"value":18409.96,"ownership":{"direct":true},"balance_after":3518,"source":{"system":"sec-edgar","filing":"0001415889-24-023985","document":"form4-09262024_030951.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1172052/000141588924023985/form4-09262024_030951.xml","form_type":"4"}}]}