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Westermann Donald Michael

Disclosed activity across 1 company

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SEC CIK
0001825585

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CompanyLast reported asReport datePublished
Eastern Bankshares, Inc.EBC · Entity 448Chief Information OfficerSeptember 01, 2026September 02, 2026

Disclosed balances

About these balances

Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.

Eastern Bankshares, Inc.

Report date September 01, 2026 · Filed September 02, 2026

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeDirect22,565 Reported balance After 2026-09-01 transaction · row 1
1 source row

Row 1 · 2026-09-01 · Sale · Disposed 10,407 · Balance 22,565

Common StockSEC Table I · non-derivativeIndirectBy 401(k)0 Reported balance After 2026-09-01 transaction · row 2 Account identity is unresolved; indirect or unspecified ownership is not merged.
1 source row

Row 2 · 2026-09-01 · Sale · Disposed 23,005 · Balance 0

F1: Reflects the amount of shares beneficially owned, including shares received due to automatic dividend reinvestment, as of the date of this report.

Common StockSEC Table I · non-derivativeIndirectBy ESOP4,990 Reported balance Holding disclosure · report date 2026-09-01 · row 3 Holding and transaction disclosures are not merged.
1 source row

Row 3 · Balance 4,990

F1: Reflects the amount of shares beneficially owned, including shares received due to automatic dividend reinvestment, as of the date of this report.

Filing footnotes · ownership attribution and instrument terms

F1: Reflects the amount of shares beneficially owned, including shares received due to automatic dividend reinvestment, as of the date of this report.

Transaction history

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Purchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”

The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.

Transaction dateCompanyActivity / securityShares / unitsReported priceReported valueDetails
September 01, 2026 Filed Sep 2, 2026 20:15 UTC Eastern Bankshares, Inc. EBC · Entity 448 SaleCommon Stock 23,005 $21.43 $492,997.15
Disclosure

SEC source: 0001193125-26-380203 · ownership.xml · nonDerivative · entry 2

Westermann Donald Michael · CIK 0001825585 · Chief Information Officer

10b5-1 filing: No plan indicated

Ownership: Indirect · By 401(k)

Disclosed balance after: 0

F1 · ownership.direct: Reflects the amount of shares beneficially owned, including shares received due to automatic dividend reinvestment, as of the date of this report.

Read SEC document
September 01, 2026 Filed Sep 2, 2026 20:15 UTC Eastern Bankshares, Inc. EBC · Entity 448 SaleCommon Stock 10,407 $21.77 $226,560.39
Disclosure

SEC source: 0001193125-26-380203 · ownership.xml · nonDerivative · entry 1

Westermann Donald Michael · CIK 0001825585 · Chief Information Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 22,565

Read SEC document
March 03, 2026 Filed Mar 5, 2026 21:41 UTC Eastern Bankshares, Inc. EBC · Entity 448 Exercise / conversionRestricted Stock Units · Derivative 2,165 $0.00 $0.00
Disclosure

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.

Read SEC document
March 03, 2026 Filed Mar 5, 2026 21:41 UTC Eastern Bankshares, Inc. EBC · Entity 448 Tax withholdingCommon Stock 961 $19.45 $18,691.45
Disclosure

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

Read SEC document
March 03, 2026 Filed Mar 5, 2026 21:41 UTC Eastern Bankshares, Inc. EBC · Entity 448 Exercise / conversionCommon Stock 2,165 $0.00 $0.00
Disclosure

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.

Read SEC document
March 02, 2026 Filed Mar 3, 2026 21:37 UTC Eastern Bankshares, Inc. EBC · Entity 448 GrantRestricted Stock Units · Derivative 7,099 $0.00 $0.00
Disclosure

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.

Read SEC document
March 01, 2026 Filed Mar 3, 2026 21:37 UTC Eastern Bankshares, Inc. EBC · Entity 448 Exercise / conversionRestricted Stock Units · Derivative 2,894 $0.00 $0.00
Disclosure

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.

Read SEC document
March 01, 2026 Filed Mar 3, 2026 21:37 UTC Eastern Bankshares, Inc. EBC · Entity 448 Exercise / conversionRestricted Stock Units · Derivative 1,977 $0.00 $0.00
Disclosure

SEC source: 0001193125-26-088426 · ownership.xml · derivative · entry 8

Westermann Donald Michael · CIK 0001825585 · Chief Information Officer

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.

Read SEC document
March 01, 2026 Filed Mar 3, 2026 21:37 UTC Eastern Bankshares, Inc. EBC · Entity 448 Exercise / conversionRestricted Stock Units · Derivative 9,488 $0.00 $0.00
Disclosure

SEC source: 0001193125-26-088426 · ownership.xml · derivative · entry 7

Westermann Donald Michael · CIK 0001825585 · Chief Information Officer

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.

Read SEC document
March 01, 2026 Filed Mar 3, 2026 21:37 UTC Eastern Bankshares, Inc. EBC · Entity 448 Tax withholdingCommon Stock 2,449 $19.56 $47,902.44
Disclosure

SEC source: 0001193125-26-088426 · ownership.xml · nonDerivative · entry 4

Westermann Donald Michael · CIK 0001825585 · Chief Information Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 31,768

Read SEC document
March 01, 2026 Filed Mar 3, 2026 21:37 UTC Eastern Bankshares, Inc. EBC · Entity 448 GrantCommon Stock 5,520 $0.00 $0.00
Disclosure

SEC source: 0001193125-26-088426 · ownership.xml · nonDerivative · entry 3

Westermann Donald Michael · CIK 0001825585 · Chief Information Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 34,217

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.

Read SEC document
March 01, 2026 Filed Mar 3, 2026 21:37 UTC Eastern Bankshares, Inc. EBC · Entity 448 Tax withholdingCommon Stock 6,522 $19.56 $127,570.32
Disclosure

SEC source: 0001193125-26-088426 · ownership.xml · nonDerivative · entry 2

Westermann Donald Michael · CIK 0001825585 · Chief Information Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 28,697

Read SEC document
March 01, 2026 Filed Mar 3, 2026 21:37 UTC Eastern Bankshares, Inc. EBC · Entity 448 Exercise / conversionCommon Stock 14,359 $0.00 $0.00
Disclosure

SEC source: 0001193125-26-088426 · ownership.xml · nonDerivative · entry 1

Westermann Donald Michael · CIK 0001825585 · Chief Information Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 35,219

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.

Read SEC document
January 28, 2026 Filed Jan 29, 2026 21:15 UTC Eastern Bankshares, Inc. EBC · Entity 448 SaleCommon Stock 21,256 $20.11 $427,458.16
Disclosure

SEC source: 0001193125-26-029372 · ownership.xml · nonDerivative · entry 1

Westermann Donald Michael · CIK 0001825585 · Chief Information Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 20,860

F1 · price: Represents the average sales price. The actual sales prices range from $20.10 to $20.13 per share. The reporting person will supply the SEC, the Issuer, or a security holder of the Issuer, with full information regarding the number of shares at each price upon request.

Read SEC document
March 03, 2025 Filed Mar 5, 2025 23:26 UTC Eastern Bankshares, Inc. EBC · Entity 448 GrantRestricted Stock Units · Derivative 34,697 $0.00 $0.00
Disclosure

SEC source: 0000950170-25-033963 · ownership.xml · derivative · entry 10

Westermann Donald Michael · CIK 0001825585 · Chief Information Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 34,697

Underlying: Common stock · 34,697 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.

F7 · 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 1, 2026 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.

F7 · 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 1, 2026 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.

Read SEC document
March 03, 2025 Filed Mar 5, 2025 23:26 UTC Eastern Bankshares, Inc. EBC · Entity 448 Exercise / conversionRestricted Stock Units · Derivative 2,894 $0.00 $0.00
Disclosure

SEC source: 0000950170-25-033963 · ownership.xml · derivative · entry 9

Westermann Donald Michael · CIK 0001825585 · Chief Information Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,789

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.

Read SEC document
March 03, 2025 Filed Mar 5, 2025 23:26 UTC Eastern Bankshares, Inc. EBC · Entity 448 Exercise / conversionRestricted Stock Units · Derivative 1,977 $0.00 $0.00
Disclosure

SEC source: 0000950170-25-033963 · ownership.xml · derivative · entry 8

Westermann Donald Michael · CIK 0001825585 · Chief Information Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,977

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.

Read SEC document
March 03, 2025 Filed Mar 5, 2025 23:26 UTC Eastern Bankshares, Inc. EBC · Entity 448 Exercise / conversionRestricted Stock Units · Derivative 9,488 $0.00 $0.00
Disclosure

SEC source: 0000950170-25-033963 · ownership.xml · derivative · entry 7

Westermann Donald Michael · CIK 0001825585 · Chief Information Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 18,976

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.

Read SEC document
March 03, 2025 Filed Mar 5, 2025 23:26 UTC Eastern Bankshares, Inc. EBC · Entity 448 Tax withholdingCommon Stock 15,932 $17.73 $282,474.36
Disclosure

SEC source: 0000950170-25-033963 · ownership.xml · nonDerivative · entry 4

Westermann Donald Michael · CIK 0001825585 · Chief Information Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 42,116

Read SEC document
March 03, 2025 Filed Mar 5, 2025 23:26 UTC Eastern Bankshares, Inc. EBC · Entity 448 GrantCommon Stock 35,578 $0.00 $0.00
Disclosure

SEC source: 0000950170-25-033963 · ownership.xml · nonDerivative · entry 3

Westermann Donald Michael · CIK 0001825585 · Chief Information Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 58,048

F8 · 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 both (i) the Company's performance measured at the end of the three-year performance period of January 1, 2022 through December 31, 2024 (the "Performance Period") relative to the KBW Nasdaq Regional Banking Index with respect to growth in earnings per share ("EPS Measure"), and (ii) the Company's performance measured at the end of the Performance Period relative to the KBW Nasdaq Regional Banking Index with respect to total shareholder return ("TSR Measure").

F9 · shares: (Continued from footnote 8) Based on the Company's three year performance on the TSR Measure and EPS Measure respectively, as measured at the end of the Performance Period, the Compensation Committee determined that (i) performance under the TSR Measure did not meet the minimum threshold, resulting in no award of shares for this metric, and (ii) performance under the EPS Measure met the maximum payout threshold of 150% of target.

Read SEC document
March 03, 2025 Filed Mar 5, 2025 23:26 UTC Eastern Bankshares, Inc. EBC · Entity 448 Tax withholdingCommon Stock 6,369 $17.73 $112,922.37
Disclosure

SEC source: 0000950170-25-033963 · ownership.xml · nonDerivative · entry 2

Westermann Donald Michael · CIK 0001825585 · Chief Information Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 22,470

Read SEC document
March 03, 2025 Filed Mar 5, 2025 23:26 UTC Eastern Bankshares, Inc. EBC · Entity 448 Exercise / conversionCommon Stock 14,359 $0.00 $0.00
Disclosure

SEC source: 0000950170-25-033963 · ownership.xml · nonDerivative · entry 1

Westermann Donald Michael · CIK 0001825585 · Chief Information Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 28,839

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.

Read SEC document
March 01, 2024 Filed Mar 5, 2024 21:14 UTC Eastern Bankshares, Inc. EBC · Entity 448 GrantRestricted Stock Units · Derivative 8,683 $0.00 $0.00
Disclosure

SEC source: 0000950170-24-025924 · ownership.xml · derivative · entry 7

Westermann Donald Michael · CIK 0001825585 · Chief Information Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,683

Underlying: Common Stock · 8,683 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 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.

Read SEC document
March 01, 2024 Filed Mar 5, 2024 21:14 UTC Eastern Bankshares, Inc. EBC · Entity 448 Exercise / conversionRestricted Stock Units · Derivative 1,976 $0.00 $0.00
Disclosure

SEC source: 0000950170-24-025924 · ownership.xml · derivative · entry 6

Westermann Donald Michael · CIK 0001825585 · Chief Information Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,954

Underlying: Common Stock · 1,976 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.

Read SEC document
March 01, 2024 Filed Mar 5, 2024 21:14 UTC Eastern Bankshares, Inc. EBC · Entity 448 Exercise / conversionRestricted Stock Units · Derivative 9,487 $0.00 $0.00
Disclosure

SEC source: 0000950170-24-025924 · ownership.xml · derivative · entry 5

Westermann Donald Michael · CIK 0001825585 · Chief Information Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 28,464

Underlying: Common Stock · 9,487 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

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.

Read SEC document
March 01, 2024 Filed Mar 5, 2024 21:14 UTC Eastern Bankshares, Inc. EBC · Entity 448 Tax withholdingCommon Stock 3,557 $12.81 $45,565.17
Disclosure

SEC source: 0000950170-24-025924 · ownership.xml · nonDerivative · entry 2

Westermann Donald Michael · CIK 0001825585 · Chief Information Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 14,480

Read SEC document
March 01, 2024 Filed Mar 5, 2024 21:14 UTC Eastern Bankshares, Inc. EBC · Entity 448 Exercise / conversionCommon Stock 11,463 $0.00 $0.00
Disclosure

SEC source: 0000950170-24-025924 · ownership.xml · nonDerivative · entry 1

Westermann Donald Michael · CIK 0001825585 · Chief Information Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 18,037

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

Read SEC document
March 01, 2023 Filed Mar 3, 2023 21:08 UTC Eastern Bankshares, Inc. EBC · Entity 448 GrantRestricted Stock Units · Derivative 5,930 $0.00 $0.00
Disclosure

SEC source: 0000899243-23-006965 · doc4.xml · derivative · entry 6

Westermann Donald Michael · CIK 0001825585 · Chief Information Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,930

Underlying: Common Stock · 5,930 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.

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.

Read SEC document
March 01, 2023 Filed Mar 3, 2023 21:08 UTC Eastern Bankshares, Inc. EBC · Entity 448 Exercise / conversionRestricted Stock Units · Derivative 9,487 $0.00 $0.00
Disclosure

SEC source: 0000899243-23-006965 · doc4.xml · derivative · entry 5

Westermann Donald Michael · CIK 0001825585 · Chief Information Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 37,951

Underlying: Common Stock · 9,487 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.

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.

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March 01, 2023 Filed Mar 3, 2023 21:08 UTC Eastern Bankshares, Inc. EBC · Entity 448 Tax withholdingCommon Stock 2,913 $15.63 $45,530.19
Disclosure

SEC source: 0000899243-23-006965 · doc4.xml · nonDerivative · entry 2

Westermann Donald Michael · CIK 0001825585 · Chief Information Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 6,574

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March 01, 2023 Filed Mar 3, 2023 21:08 UTC Eastern Bankshares, Inc. EBC · Entity 448 Exercise / conversionCommon Stock 9,487 $0.00 $0.00
Disclosure

SEC source: 0000899243-23-006965 · doc4.xml · nonDerivative · entry 1

Westermann Donald Michael · CIK 0001825585 · Chief Information Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,487

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

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March 01, 2022 Filed Mar 3, 2022 23:01 UTC Eastern Bankshares, Inc. EBC · Entity 448 GrantRestricted Stock Units · Derivative 47,438 $0.00 $0.00
Disclosure

SEC source: 0000899243-22-009182 · doc4.xml · derivative · entry 3

Westermann Donald Michael · CIK 0001825585 · Chief Information Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 47,438

Underlying: Common Stock · 47,438 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.

F3 · derivative.exercise_date: The restricted stock units vest in five equal annual installments beginning March 1, 2023. Vested shares will be issued to the reporting person as soon as practicable after the vesting date.

F3 · derivative.expiration_date: The restricted stock units vest in five equal annual installments beginning March 1, 2023. Vested shares will be issued to the reporting person as soon as practicable after the vesting date.

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October 14, 2020 Filed Oct 16, 2020 21:53 UTC Eastern Bankshares, Inc. EBC · Entity 448 PurchaseCommon Stock 20,000 $10.00 $200,000.00
Disclosure

SEC source: 0001209191-20-055142 · doc4.xml · nonDerivative · entry 1

Westermann Donald Michael · CIK 0001825585 · Chief Information Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · By 401(k)

Disclosed balance after: 20,000

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Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.