EBC

SEC source: 0001193125-26-094123 · ownership.xml · derivative · entry 7

Westermann Donald Michael · CIK 0001825585 · Chief Information Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 32,532

Underlying: Common stock · 2,165 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Restricted stock units convert into common stock on a one-for-one basis.

F5 · derivative.exercise_date: On March 3, 2025, the reporting person was granted 34,697 restricted stock units of which 6,497 vest in three equal annual installments beginning March 3, 2026, after market close, and 28,200 vest after 3 years, subject to continued service. Vested shares will be issued to the reporting person as soon as practicable after the vesting date.

F5 · derivative.expiration_date: On March 3, 2025, the reporting person was granted 34,697 restricted stock units of which 6,497 vest in three equal annual installments beginning March 3, 2026, after market close, and 28,200 vest after 3 years, subject to continued service. Vested shares will be issued to the reporting person as soon as practicable after the vesting date.

SEC source: 0001193125-26-094123 · ownership.xml · nonDerivative · entry 2

Westermann Donald Michael · CIK 0001825585 · Chief Information Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 32,972

SEC source: 0001193125-26-094123 · ownership.xml · nonDerivative · entry 1

Westermann Donald Michael · CIK 0001825585 · Chief Information Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 33,933

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: Restricted stock units convert into common stock on a one-for-one basis.

SEC source: 0001193125-26-093988 · ownership.xml · derivative · entry 9

Miller Quincy Lee · CIK 0001825603 · President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,243

Underlying: Common stock · 5,621 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Restricted stock units convert into common stock on a one-for-one basis.

F5 · derivative.exercise_date: On March 3, 2025, the reporting person was granted 16,864 restricted stock units that vest in three equal annual installments beginning March 3, 2026, after market close, subject to continued service. Vested shares will be issued to the reporting person as soon as practicable after the vesting date.

F5 · derivative.expiration_date: On March 3, 2025, the reporting person was granted 16,864 restricted stock units that vest in three equal annual installments beginning March 3, 2026, after market close, subject to continued service. Vested shares will be issued to the reporting person as soon as practicable after the vesting date.

SEC source: 0001193125-26-093988 · ownership.xml · nonDerivative · entry 2

Miller Quincy Lee · CIK 0001825603 · President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 66,538

SEC source: 0001193125-26-093988 · ownership.xml · nonDerivative · entry 1

Miller Quincy Lee · CIK 0001825603 · President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 69,031

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: Restricted stock units convert into common stock on a one-for-one basis.

SEC source: 0001193125-26-093985 · ownership.xml · derivative · entry 6

Ahlquist David Andrew · CIK 0001825434 · SVP, Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,269

Underlying: Common stock · 1,634 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Restricted stock units convert into common stock on a one-for-one basis.

F4 · derivative.exercise_date: On March 3, 2025, the reporting person was granted 4,903 restricted stock units that vest in three equal annual installments beginning March 3, 2026, subject to continued service. Vested shares will be issued to the reporting person as soon as practicable after the vesting date.

F4 · derivative.expiration_date: On March 3, 2025, the reporting person was granted 4,903 restricted stock units that vest in three equal annual installments beginning March 3, 2026, subject to continued service. Vested shares will be issued to the reporting person as soon as practicable after the vesting date.

SEC source: 0001193125-26-093985 · ownership.xml · nonDerivative · entry 2

Ahlquist David Andrew · CIK 0001825434 · SVP, Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 12,972

SEC source: 0001193125-26-093985 · ownership.xml · nonDerivative · entry 1

Ahlquist David Andrew · CIK 0001825434 · SVP, Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 13,539

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: Restricted stock units convert into common stock on a one-for-one basis.

SEC source: 0001193125-26-088395 · ownership.xml · derivative · entry 11

Antonakes Steven Louis · CIK 0001825588 · Executive VP

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,629

Underlying: Common stock · 4,629 shares

Expires not disclosed

F3 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of EBC common stock on the applicable vesting date.

F8 · derivative.exercise_date: On March 2, 2026, the reporting person was granted 4,629 restricted stock units that vest in three equal annual installments beginning March 2, 2027, subject to continued service. Vested shares will be issued to the reporting person as soon as practicable after the vesting date.

F8 · derivative.expiration_date: On March 2, 2026, the reporting person was granted 4,629 restricted stock units that vest in three equal annual installments beginning March 2, 2027, subject to continued service. Vested shares will be issued to the reporting person as soon as practicable after the vesting date.

SEC source: 0001193125-26-088429 · ownership.xml · derivative · entry 11

Henry Kathleen Cloherty · CIK 0001825659 · Executive VP, General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,099

Underlying: Common stock · 7,099 shares

Expires not disclosed

F3 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of EBC common stock on the applicable vesting date.

F8 · derivative.exercise_date: On March 2, 2026, the reporting person was granted 7,099 restricted stock units that vest in three equal annual installments beginning March 2, 2027, subject to continued service. Vested shares will be issued to the reporting person as soon as practicable after the vesting date.

F8 · derivative.expiration_date: On March 2, 2026, the reporting person was granted 7,099 restricted stock units that vest in three equal annual installments beginning March 2, 2027, subject to continued service. Vested shares will be issued to the reporting person as soon as practicable after the vesting date.

SEC source: 0001193125-26-088960 · ownership.xml · derivative · entry 11

SHEAHAN DENIS K · CIK 0001207221 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 24,340

Underlying: Common stock · 24,340 shares

Expires not disclosed

F8 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Company common stock on the applicable vesting date.

F11 · derivative.exercise_date: On March 2, 2026, the reporting person was granted 24,340 restricted stock units that vest in three equal annual installments beginning March 2, 2027, subject to continued service. Vested shares will be issued to the reporting person as soon as practicable after the vesting date.

F11 · derivative.expiration_date: On March 2, 2026, the reporting person was granted 24,340 restricted stock units that vest in three equal annual installments beginning March 2, 2027, subject to continued service. Vested shares will be issued to the reporting person as soon as practicable after the vesting date.

SEC source: 0001193125-26-088932 · ownership.xml · derivative · entry 13

Miller Quincy Lee · CIK 0001825603 · President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 15,162

Underlying: Common stock · 15,162 shares

Expires not disclosed

F3 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of EBC common stock on the applicable vesting date.

F8 · derivative.exercise_date: On March 2, 2026, the reporting person was granted 15,162 restricted stock units that vest in three equal annual installments beginning March 2, 2027, subject to continued service. Vested shares will be issued to the reporting person as soon as practicable after the vesting date.

F8 · derivative.expiration_date: On March 2, 2026, the reporting person was granted 15,162 restricted stock units that vest in three equal annual installments beginning March 2, 2027, subject to continued service. Vested shares will be issued to the reporting person as soon as practicable after the vesting date.

SEC source: 0001193125-26-088681 · ownership.xml · derivative · entry 8

Ahlquist David Andrew · CIK 0001825434 · SVP, Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,540

Underlying: Common stock · 4,540 shares

Expires not disclosed

F3 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of EBC common stock on the applicable vesting date.

F6 · derivative.exercise_date: On March 2, 2026, the reporting person was granted 4,540 restricted stock units that vest in three equal annual installments beginning March 2, 2027, subject to continued service. Vested shares will be issued to the reporting person as soon as practicable after the vesting date.

F6 · derivative.expiration_date: On March 2, 2026, the reporting person was granted 4,540 restricted stock units that vest in three equal annual installments beginning March 2, 2027, subject to continued service. Vested shares will be issued to the reporting person as soon as practicable after the vesting date.

SEC source: 0001193125-26-088561 · ownership.xml · derivative · entry 10

Rivers Robert Francis · CIK 0001825654 · Director · Executive Chair

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 33,301

Underlying: Common stock · 33,301 shares

Expires not disclosed

F4 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of EBC common stock on the applicable vesting date.

F9 · derivative.exercise_date: On March 2, 2026, the reporting person was granted 33,301 restricted stock units that vest in three equal annual installments beginning March 2, 2027, subject to continued service. Vested shares will be issued to the reporting person as soon as practicable after the vesting date.

F9 · derivative.expiration_date: On March 2, 2026, the reporting person was granted 33,301 restricted stock units that vest in three equal annual installments beginning March 2, 2027, subject to continued service. Vested shares will be issued to the reporting person as soon as practicable after the vesting date.

SEC source: 0001193125-26-088426 · ownership.xml · derivative · entry 11

Westermann Donald Michael · CIK 0001825585 · Chief Information Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,099

Underlying: Common stock · 7,099 shares

Expires not disclosed

F3 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of EBC common stock on the applicable vesting date.

F8 · derivative.exercise_date: On March 2, 2026, the reporting person was granted 7,099 restricted stock units that vest in three equal annual installments beginning March 2, 2027, subject to continued service. Vested shares will be issued to the reporting person as soon as practicable after the vesting date.

F8 · derivative.expiration_date: On March 2, 2026, the reporting person was granted 7,099 restricted stock units that vest in three equal annual installments beginning March 2, 2027, subject to continued service. Vested shares will be issued to the reporting person as soon as practicable after the vesting date.

SEC source: 0001193125-26-088355 · ownership.xml · derivative · entry 5

Rosato R David · CIK 0001605452 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,156

Underlying: Common stock · 11,156 shares

Expires not disclosed

F2 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of EBC common stock on the applicable vesting date.

F5 · derivative.exercise_date: On March 2, 2026, the reporting person was granted 11,156 restricted stock units that vest in three equal annual installments beginning March 2, 2027, subject to continued service. Vested shares will be issued to the reporting person as soon as practicable after the vesting date.

F5 · derivative.expiration_date: On March 2, 2026, the reporting person was granted 11,156 restricted stock units that vest in three equal annual installments beginning March 2, 2027, subject to continued service. Vested shares will be issued to the reporting person as soon as practicable after the vesting date.

SEC source: 0001193125-26-088395 · ownership.xml · derivative · entry 9

Antonakes Steven Louis · CIK 0001825588 · Executive VP

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,814

Underlying: Common stock · 1,813 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Restricted stock units convert into common stock on a one-for-one basis.

F6 · derivative.exercise_date: On March 1, 2024, the reporting person was granted 5,439 restricted stock units that vest in three equal annual installments beginning March 1, 2025, subject to continued service. Vested shares will be issued to the reporting person as soon as practicable after the vesting date.

F6 · derivative.expiration_date: On March 1, 2024, the reporting person was granted 5,439 restricted stock units that vest in three equal annual installments beginning March 1, 2025, subject to continued service. Vested shares will be issued to the reporting person as soon as practicable after the vesting date.

SEC source: 0001193125-26-088395 · ownership.xml · derivative · entry 8

Antonakes Steven Louis · CIK 0001825588 · Executive VP

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common stock · 1,487 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Restricted stock units convert into common stock on a one-for-one basis.

F5 · derivative.exercise_date: On March 1, 2023, the reporting person was granted 4,458 restricted stock units that vest in three equal annual installments beginning March 1, 2024, subject to continued service. Vested shares will be issued to the reporting person as soon as practicable after the vesting date.

F5 · derivative.expiration_date: On March 1, 2023, the reporting person was granted 4,458 restricted stock units that vest in three equal annual installments beginning March 1, 2024, subject to continued service. Vested shares will be issued to the reporting person as soon as practicable after the vesting date.

SEC source: 0001193125-26-088395 · ownership.xml · derivative · entry 7

Antonakes Steven Louis · CIK 0001825588 · Executive VP

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,488

Underlying: Common stock · 9,488 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Restricted stock units convert into common stock on a one-for-one basis.

F4 · derivative.exercise_date: On March 1, 2022, the reporting person was granted 47,438 restricted stock units that vest in five equal annual installments beginning March 1, 2023, subject to continued service. Vested shares will be issued to the reporting person as soon as practicable after the vesting date.

F4 · derivative.expiration_date: On March 1, 2022, the reporting person was granted 47,438 restricted stock units that vest in five equal annual installments beginning March 1, 2023, subject to continued service. Vested shares will be issued to the reporting person as soon as practicable after the vesting date.

SEC source: 0001193125-26-088395 · ownership.xml · nonDerivative · entry 4

Antonakes Steven Louis · CIK 0001825588 · Executive VP

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 73,202

SEC source: 0001193125-26-088395 · ownership.xml · nonDerivative · entry 3

Antonakes Steven Louis · CIK 0001825588 · Executive VP

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 74,421

F9 · shares: Represents shares of Eastern Bankshares, Inc. (the "Company") common stock, par value $0.01 per share ("Common Stock") received upon vesting of a performance restricted stock unit ("PRSU") award eligible to vest based upon the Company's performance on total shareholder return ("TSR") measured at the end of the three-year performance period of January 1, 2023 through December 31, 2025 (the "Performance Period") relative to TSR performance over that performance period of the banks listed on the KBW Nasdaq Regional Banking Index (the "TSR Measure"). The Compensation and Human Capital Management Committee determined that the Company's performance of the TSR Measure resulted in a payout of 93.1% of target.

SEC source: 0001193125-26-088395 · ownership.xml · nonDerivative · entry 2

Antonakes Steven Louis · CIK 0001825588 · Executive VP

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 70,271

SEC source: 0001193125-26-088395 · ownership.xml · nonDerivative · entry 1

Antonakes Steven Louis · CIK 0001825588 · Executive VP

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 74,206

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: Restricted stock units convert into common stock on a one-for-one basis.

SEC source: 0001193125-26-088429 · ownership.xml · derivative · entry 9

Henry Kathleen Cloherty · CIK 0001825659 · Executive VP, General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,498

Underlying: Common stock · 5,496 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Restricted stock units convert into common stock on a one-for-one basis.

F6 · derivative.exercise_date: On March 1, 2024, the reporting person was granted 16,490 restricted stock units that vest in three equal annual installments beginning March 1, 2025, subject to continued service. Vested shares will be issued to the reporting person as soon as practicable after the vesting date.

F6 · derivative.expiration_date: On March 1, 2024, the reporting person was granted 16,490 restricted stock units that vest in three equal annual installments beginning March 1, 2025, subject to continued service. Vested shares will be issued to the reporting person as soon as practicable after the vesting date.

SEC source: 0001193125-26-088429 · ownership.xml · derivative · entry 8

Henry Kathleen Cloherty · CIK 0001825659 · Executive VP, General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common stock · 1,977 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Restricted stock units convert into common stock on a one-for-one basis.

F5 · derivative.exercise_date: On March 1, 2023, the reporting person was granted 5,930 restricted stock units that vest in three equal annual installments beginning March 1, 2024, subject to continued service. Vested shares will be issued to the reporting person as soon as practicable after the vesting date.

F5 · derivative.expiration_date: On March 1, 2023, the reporting person was granted 5,930 restricted stock units that vest in three equal annual installments beginning March 1, 2024, subject to continued service. Vested shares will be issued to the reporting person as soon as practicable after the vesting date.

SEC source: 0001193125-26-088429 · ownership.xml · derivative · entry 7

Henry Kathleen Cloherty · CIK 0001825659 · Executive VP, General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,488

Underlying: Common stock · 9,488 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Restricted stock units convert into common stock on a one-for-one basis.

F4 · derivative.exercise_date: On March 1, 2022, the reporting person was granted 47,438 restricted stock units that vest in five equal annual installments beginning March 1, 2023, subject to continued service. Vested shares will be issued to the reporting person as soon as practicable after the vesting date.

F4 · derivative.expiration_date: On March 1, 2022, the reporting person was granted 47,438 restricted stock units that vest in five equal annual installments beginning March 1, 2023, subject to continued service. Vested shares will be issued to the reporting person as soon as practicable after the vesting date.

SEC source: 0001193125-26-088429 · ownership.xml · nonDerivative · entry 4

Henry Kathleen Cloherty · CIK 0001825659 · Executive VP, General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 38,981

SEC source: 0001193125-26-088429 · ownership.xml · nonDerivative · entry 3

Henry Kathleen Cloherty · CIK 0001825659 · Executive VP, General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 41,430

F9 · shares: Represents shares of Eastern Bankshares, Inc. (the "Company") common stock, par value $0.01 per share ("Common Stock") received upon vesting of a performance restricted stock unit ("PRSU") award eligible to vest based upon the Company's performance on total shareholder return ("TSR") measured at the end of the three-year performance period of January 1, 2023 through December 31, 2025 (the "Performance Period") relative to TSR performance over that performance period of the banks listed on the KBW Nasdaq Regional Banking Index (the "TSR Measure"). The Compensation and Human Capital Management Committee determined that the Company's performance of the TSR Measure resulted in a payout of 93.1% of target.

SEC source: 0001193125-26-088429 · ownership.xml · nonDerivative · entry 2

Henry Kathleen Cloherty · CIK 0001825659 · Executive VP, General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 35,910

SEC source: 0001193125-26-088429 · ownership.xml · nonDerivative · entry 1

Henry Kathleen Cloherty · CIK 0001825659 · Executive VP, General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 43,574

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: Restricted stock units convert into common stock on a one-for-one basis.

SEC source: 0001193125-26-088932 · ownership.xml · derivative · entry 11

Miller Quincy Lee · CIK 0001825603 · President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,063

Underlying: Common stock · 7,062 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Restricted stock units convert into common stock on a one-for-one basis.

F6 · derivative.exercise_date: On March 1, 2024, the reporting person was granted 21,186 restricted stock units that vest in three equal annual installments beginning March 1, 2025, subject to continued service. Vested shares will be issued to the reporting person as soon as practicable after the vesting date.

F6 · derivative.expiration_date: On March 1, 2024, the reporting person was granted 21,186 restricted stock units that vest in three equal annual installments beginning March 1, 2025, subject to continued service. Vested shares will be issued to the reporting person as soon as practicable after the vesting date.

SEC source: 0001193125-26-088932 · ownership.xml · derivative · entry 10

Miller Quincy Lee · CIK 0001825603 · President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common stock · 3,775 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Restricted stock units convert into common stock on a one-for-one basis.

F5 · derivative.exercise_date: On March 1, 2023, the reporting person was granted 11,324 restricted stock units that vest in three equal annual installments beginning March 1, 2024, subject to continued service. Vested shares will be issued to the reporting person as soon as practicable after the vesting date.

F5 · derivative.expiration_date: On March 1, 2023, the reporting person was granted 11,324 restricted stock units that vest in three equal annual installments beginning March 1, 2024, subject to continued service. Vested shares will be issued to the reporting person as soon as practicable after the vesting date.

SEC source: 0001193125-26-088932 · ownership.xml · derivative · entry 9

Miller Quincy Lee · CIK 0001825603 · President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 14,232

Underlying: Common stock · 14,232 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Restricted stock units convert into common stock on a one-for-one basis.

F4 · derivative.exercise_date: On March 1, 2022, the reporting person was granted 71,157 restricted stock units that vest in five equal annual installments beginning March 1, 2023, subject to continued service. Vested shares will be issued to the reporting person as soon as practicable after the vesting date.

F4 · derivative.expiration_date: On March 1, 2022, the reporting person was granted 71,157 restricted stock units that vest in five equal annual installments beginning March 1, 2023, subject to continued service. Vested shares will be issued to the reporting person as soon as practicable after the vesting date.

SEC source: 0001193125-26-088932 · ownership.xml · nonDerivative · entry 4

Miller Quincy Lee · CIK 0001825603 · President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 63,410

SEC source: 0001193125-26-088932 · ownership.xml · nonDerivative · entry 3

Miller Quincy Lee · CIK 0001825603 · President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 68,086

F9 · shares: Represents shares of Eastern Bankshares, Inc. (the "Company") common stock, par value $0.01 per share ("Common Stock") received upon vesting of a performance restricted stock unit ("PRSU") award eligible to vest based upon the Company's performance on total shareholder return ("TSR") measured at the end of the three-year performance period of January 1, 2023 through December 31, 2025 (the "Performance Period") relative to TSR performance over that performance period of the banks listed on the KBW Nasdaq Regional Banking Index (the "TSR Measure"). The Compensation and Human Capital Management Committee determined that the Company's performance of the TSR Measure resulted in a payout of 93.1% of target.

SEC source: 0001193125-26-088932 · ownership.xml · nonDerivative · entry 2

Miller Quincy Lee · CIK 0001825603 · President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 57,544

SEC source: 0001193125-26-088932 · ownership.xml · nonDerivative · entry 1

Miller Quincy Lee · CIK 0001825603 · President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 68,698

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: Restricted stock units convert into common stock on a one-for-one basis.

SEC source: 0001193125-26-088681 · ownership.xml · derivative · entry 6

Ahlquist David Andrew · CIK 0001825434 · SVP, Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,197

Underlying: Common stock · 2,196 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Restricted stock units convert into common stock on a one-for-one basis.

F5 · derivative.exercise_date: On March 1, 2024, the reporting person was granted 6,588 restricted stock units that vest in three equal annual installments beginning March 1, 2025, subject to continued service. Vested shares will be issued to the reporting person as soon as practicable after the vesting date.

F5 · derivative.expiration_date: On March 1, 2024, the reporting person was granted 6,588 restricted stock units that vest in three equal annual installments beginning March 1, 2025, subject to continued service. Vested shares will be issued to the reporting person as soon as practicable after the vesting date.

SEC source: 0001193125-26-088681 · ownership.xml · derivative · entry 5

Ahlquist David Andrew · CIK 0001825434 · SVP, Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common stock · 1,457 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Restricted stock units convert into common stock on a one-for-one basis.

F4 · derivative.exercise_date: On March 1, 2023, the reporting person was granted 4,368 restricted stock units that vested in three equal annual installments beginning March 1, 2024, subject to continued service.

F4 · derivative.expiration_date: On March 1, 2023, the reporting person was granted 4,368 restricted stock units that vested in three equal annual installments beginning March 1, 2024, subject to continued service.

SEC source: 0001193125-26-088681 · ownership.xml · nonDerivative · entry 2

Ahlquist David Andrew · CIK 0001825434 · SVP, Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,905

SEC source: 0001193125-26-088681 · ownership.xml · nonDerivative · entry 1

Ahlquist David Andrew · CIK 0001825434 · SVP, Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 13,171

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: Restricted stock units convert into common stock on a one-for-one basis.

SEC source: 0001193125-26-088561 · ownership.xml · derivative · entry 8

Rivers Robert Francis · CIK 0001825654 · Director · Executive Chair

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 15,535

Underlying: Common stock · 15,535 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Restricted stock units convert into common stock on a one-for-one basis.

F7 · derivative.exercise_date: On March 1, 2024, the reporting person was granted 46,604 restricted stock units that vest in three equal annual installments beginning March 1, 2025, subject to continued service. Vested shares will be issued to the reporting person as soon as practicable after the vesting date.

F7 · derivative.expiration_date: On March 1, 2024, the reporting person was granted 46,604 restricted stock units that vest in three equal annual installments beginning March 1, 2025, subject to continued service. Vested shares will be issued to the reporting person as soon as practicable after the vesting date.

SEC source: 0001193125-26-088561 · ownership.xml · derivative · entry 7

Rivers Robert Francis · CIK 0001825654 · Director · Executive Chair

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common stock · 10,610 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Restricted stock units convert into common stock on a one-for-one basis.

F6 · derivative.exercise_date: On March 1, 2023, the reporting person was granted 31,829 restricted stock units that vest in three equal annual installments beginning March 1, 2024, subject to continued service. Vested shares will be issued to the reporting person as soon as practicable after the vesting date.

F6 · derivative.expiration_date: On March 1, 2023, the reporting person was granted 31,829 restricted stock units that vest in three equal annual installments beginning March 1, 2024, subject to continued service. Vested shares will be issued to the reporting person as soon as practicable after the vesting date.

SEC source: 0001193125-26-088561 · ownership.xml · derivative · entry 6

Rivers Robert Francis · CIK 0001825654 · Director · Executive Chair

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 21,348

Underlying: Common stock · 21,347 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Restricted stock units convert into common stock on a one-for-one basis.

F5 · derivative.exercise_date: On March 1, 2022, the reporting person was granted 106,736 restricted stock units that vest in five equal annual installments beginning March 1, 2023, subject to continued service. Vested shares will be issued to the reporting person as soon as practicable after the vesting date.

F5 · derivative.expiration_date: On March 1, 2022, the reporting person was granted 106,736 restricted stock units that vest in five equal annual installments beginning March 1, 2023, subject to continued service. Vested shares will be issued to the reporting person as soon as practicable after the vesting date.

SEC source: 0001193125-26-088561 · ownership.xml · nonDerivative · entry 4

Rivers Robert Francis · CIK 0001825654 · Director · Executive Chair

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 452,486

F2 · ownership.direct: Includes 200,000 shares held in joint tenancy with spouse.

SEC source: 0001193125-26-088561 · ownership.xml · nonDerivative · entry 3

Rivers Robert Francis · CIK 0001825654 · Director · Executive Chair

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 463,505

F10 · shares: Represents shares of Eastern Bankshares, Inc. (the "Company") common stock, par value $0.01 per share ("Common Stock") received upon vesting of a performance restricted stock unit ("PRSU") award eligible to vest based upon the Company's performance on total shareholder return ("TSR") measured at the end of the three-year performance period of January 1, 2023 through December 31, 2025 (the "Performance Period") relative to TSR performance over that performance period of the banks listed on the KBW Nasdaq Regional Banking Index (the "TSR Measure"). The Compensation and Human Capital Management Committee determined that the Company's performance of the TSR Measure resulted in a payout of 93.1% of target.

SEC source: 0001193125-26-088561 · ownership.xml · nonDerivative · entry 2

Rivers Robert Francis · CIK 0001825654 · Director · Executive Chair

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 433,873

F2 · ownership.direct: Includes 200,000 shares held in joint tenancy with spouse.

SEC source: 0001193125-26-088561 · ownership.xml · nonDerivative · entry 1

Rivers Robert Francis · CIK 0001825654 · Director · Executive Chair

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 450,766

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: Restricted stock units convert into common stock on a one-for-one basis.

SEC source: 0001193125-26-088426 · ownership.xml · derivative · entry 9

Westermann Donald Michael · CIK 0001825585 · Chief Information Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,895

Underlying: Common stock · 2,894 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Restricted stock units convert into common stock on a one-for-one basis.

F6 · derivative.exercise_date: On March 1, 2024, the reporting person was granted 8,683 restricted stock units that vest in three equal annual installments beginning March 1, 2025, subject to continued service. Vested shares will be issued to the reporting person as soon as practicable after the vesting date.

F6 · derivative.expiration_date: On March 1, 2024, the reporting person was granted 8,683 restricted stock units that vest in three equal annual installments beginning March 1, 2025, subject to continued service. Vested shares will be issued to the reporting person as soon as practicable after the vesting date.