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This restricted stock is scheduled to vest in full on the anniversary of the grant date of May 18, 2026."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Consists of (i) 66,195 shares of common stock; (ii) 196,500 shares held in joint tenancy with spouse; (iii) 12,420 remaining shares of restricted stock that vest ratably over a five-year period on the anniversary of the November 30, 2021 date of grant; and (iv) 3,883 shares of restricted stock reported on this Form 4."}],"balance_after":278998,"source":{"system":"sec-edgar","filing":"0001193125-26-232611","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1810546/000119312526232611/ownership.xml","form_type":"4"}},{"id":1139085,"issuer":{"id":448,"kind":"organization","name":"Eastern Bankshares, Inc.","symbol":"EBC"},"owners":[{"id":45689,"kind":"person","name":"Holbrook Richard Edward","position":1,"cik":"0001826025","reported_name":"Holbrook Richard Edward","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2025-05-21T21:09:21.000Z","date":"2025-05-19","kind":"grant","planned":false,"acquired":true,"shares":4172,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"These shares represent restricted stock that was granted under the Issuer's 2021 Equity Incentive Plan pursuant to the terms of such plan. This restricted stock is scheduled to vest in full on the anniversary of the grant date of May 19, 2025."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Consists of (i) 49,604 shares of common stock; (ii) 196,500 shares held in joint tenancy with spouse; (iii) 24,839 remaining shares of restricted stock that vest ratably over a five-year period on the anniversary of the November 30, 2021 date of grant; and (iv) 4,172 shares of restricted stock reported on this Form 4."}],"balance_after":275115,"source":{"system":"sec-edgar","filing":"0000950170-25-075857","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1810546/000095017025075857/ownership.xml","form_type":"4"}},{"id":1516066,"issuer":{"id":448,"kind":"organization","name":"Eastern Bankshares, Inc.","symbol":"EBC"},"owners":[{"id":45689,"kind":"person","name":"Holbrook Richard Edward","position":1,"cik":"0001826025","reported_name":"Holbrook Richard Edward","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2024-05-15T20:05:26.000Z","date":"2024-05-13","kind":"grant","planned":false,"acquired":true,"shares":4696,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"These shares represent restricted stock that was granted under the Issuer's 2021 Equity Incentive Plan pursuant to the terms of such plan. This restricted stock is scheduled to vest in full on the anniversary of the grant date of May 13, 2024."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Consists of (i) 32,489 shares of common stock; (ii) 196,500 shares held in joint tenancy with spouse; (ii) 37,258 remaining shares of restricted stock that vest ratably over a five-year period on the anniversary of the November 30, 2021 date of grant; and (iii) 4,696 shares of restricted stock reported on this Form 4."}],"balance_after":270943,"source":{"system":"sec-edgar","filing":"0000950170-24-060426","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1810546/000095017024060426/ownership.xml","form_type":"4"}},{"id":1889245,"issuer":{"id":448,"kind":"organization","name":"Eastern Bankshares, Inc.","symbol":"EBC"},"owners":[{"id":45689,"kind":"person","name":"Holbrook Richard Edward","position":1,"cik":"0001826025","reported_name":"Holbrook Richard Edward","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2023-05-17T20:05:58.000Z","date":"2023-05-15","kind":"grant","planned":false,"acquired":true,"shares":4782,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"These shares represent restricted stock that was granted under the Issuer's 2021 Equity Incentive Plan pursuant to the terms of such plan. This restricted stock is scheduled to vest in full on the anniversary of the grant date of May 15, 2023."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Consists of (i) 15,288 shares of common stock; (ii) 196,500 shares held in joint tenancy with spouse; (ii) 49,677 remaining shares of restricted stock that vest ratably over a five-year period on the anniversary of the November 30, 2021 date of grant; and (iii) 4,782 shares of restricted stock reported on this Form 4."}],"balance_after":266247,"source":{"system":"sec-edgar","filing":"0000899243-23-013178","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1810546/000089924323013178/doc4.xml","form_type":"4"}},{"id":2263945,"issuer":{"id":448,"kind":"organization","name":"Eastern Bankshares, Inc.","symbol":"EBC"},"owners":[{"id":45689,"kind":"person","name":"Holbrook Richard Edward","position":1,"cik":"0001826025","reported_name":"Holbrook Richard Edward","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2022-05-19T20:05:27.000Z","date":"2022-05-17","kind":"grant","acquired":true,"shares":2869,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"These shares represent restricted stock that was granted under the Issuer's 2021 Equity Incentive Plan. This restricted stock is scheduled to vest in full on May 14, 2023."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Consists of (i) 196,500 shares of common stock held in joint tenancy with spouse; (ii) 62,096 shares of restricted stock that vest ratably over a five-year period on the anniversary of the November 30, 2021 date of grant; and (iii) the shares of restricted stock reported on this Form 4."}],"balance_after":261465,"source":{"system":"sec-edgar","filing":"0000899243-22-018781","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1810546/000089924322018781/doc4.xml","form_type":"4"}},{"id":2488942,"issuer":{"id":448,"kind":"organization","name":"Eastern Bankshares, Inc.","symbol":"EBC"},"owners":[{"id":45689,"kind":"person","name":"Holbrook Richard Edward","position":1,"cik":"0001826025","reported_name":"Holbrook Richard Edward","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2021-12-02T21:05:51.000Z","date":"2021-11-30","kind":"grant","acquired":true,"shares":62096,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"These shares represent restricted stock that was granted under and pursuant to Section 3.3(b) of the Issuer's Eastern Bankshares, Inc. 2021 Equity Incentive Plan. This restricted stock is scheduled to vest pro-rata on an annual basis over a five-year period."},{"field":"ownership.direct","element":"directOrIndirectOwnership","label":"F2","text":"Includes 196,500 shares held in joint tenancy with spouse."}],"balance_after":258596,"source":{"system":"sec-edgar","filing":"0000899243-21-046573","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1810546/000089924321046573/doc4.xml","form_type":"4"}},{"id":3005417,"issuer":{"id":448,"kind":"organization","name":"Eastern Bankshares, Inc.","symbol":"EBC"},"owners":[{"id":45689,"kind":"person","name":"Holbrook Richard Edward","position":1,"cik":"0001826025","reported_name":"Holbrook Richard Edward","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2020-10-16T21:14:31.000Z","date":"2020-10-14","kind":"purchase","acquired":true,"shares":196500,"price":10,"value":1965000.0,"ownership":{"direct":true},"footnotes":[{"field":"ownership.direct","element":"directOrIndirectOwnership","label":"F1","text":"Held in joint tenancy with spouse"}],"balance_after":196500,"source":{"system":"sec-edgar","filing":"0001209191-20-055093","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1810546/000120919120055093/doc4.xml","form_type":"4"}}]}