STOCK TITAN

Eastern Bankshares CIO sells 33,412 shares

(Very High)
(Negative)
Form Type
4

Rhea-AI Filing Summary

Eastern Bankshares, Inc. (EBC) reports that Chief Information Officer Donald Michael Westermann sold a total of 33,412 shares of common stock on September 1, 2026 in open-market or private transactions, and continues to hold shares both directly and through an employee stock ownership plan.

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Insights

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Insider Westermann Donald Michael
Role Chief Information Officer
Sold 33,412 shs ($720K)
Type Security Shares Price Value
Sale Common Stock 10,407 $21.77 $227K
Sale Common Stock F1 23,005 $21.43 $493K
holding Common Stock F1 -- -- --
Holdings After Transaction: Common Stock — 22,565 shares (Direct); Common Stock — 0 shares (Indirect, By 401(k)); Common Stock — 4,990 shares (Indirect, By ESOP)
Footnotes (1)
  1. F1. Reflects the amount of shares beneficially owned, including shares received due to automatic dividend reinvestment, as of the date of this report.
Shares sold (total) 33,412 shares Common stock sold by CIO Donald Michael Westermann on September 1, 2026
Direct sale 10,407 shares at $21.77 per share Direct holdings of Eastern Bankshares common stock sold on September 1, 2026
401(k) sale 23,005 shares at $21.43 per share Indirect holdings via 401(k) sold on September 1, 2026
Direct holdings after transactions 22,565 shares Common stock directly owned by the CIO after the September 1, 2026 sales
Indirect ESOP holdings after transactions 4,990 shares Common stock indirectly owned via ESOP after the reported transactions
Rule 10b5-1 plan regulatory
"The filing indicates the Rule 10b5-1 checkbox is not affirmed"
A Rule 10b5-1 plan is a prearranged, written schedule that lets corporate insiders buy or sell company stock at set times or amounts, even if they later learn material nonpublic information. Think of it like setting an automatic thermostat for trades: it creates a clear record that trades were planned in advance, reducing the risk of insider-trading accusations and helping investors trust that insider transactions are routine rather than based on secret information.
beneficially owned financial
"Reflects the amount of shares beneficially owned, including shares received"
Beneficially owned describes securities or assets where a person has the economic rights and control—such as the right to receive dividends and to direct voting—even if legal title is held in another name. Think of it like having the keys and using a car that’s registered to someone else: you get the benefits and make decisions. Investors care because beneficial ownership reveals who truly controls value and voting power, affecting corporate decisions and takeover dynamics.
automatic dividend reinvestment financial
"including shares received due to automatic dividend reinvestment"
ESOP financial
"Indirect holdings are reported through a 401(k) plan and an ESOP"
An Employee Stock Ownership Plan (ESOP) is a program that gives employees ownership shares in their company, often as part of their benefits package. It acts like a company-sponsored savings plan, allowing workers to have a stake in the company's success, which can boost motivation and loyalty. For investors, ESOPs can influence company decisions and stock value, making them an important aspect of corporate ownership and governance.
401(k) financial
"Indirect holdings are reported through a 401(k) plan and an ESOP"
A 401(k) is a type of retirement savings plan offered by employers that allows workers to set aside a portion of their paycheck before taxes are taken out. The money saved in a 401(k) can grow over time through investments, helping individuals build funds for their future retirement. It matters to investors because it provides a tax-advantaged way to save and invest for long-term financial security.

FAQ

What insider transactions did EBC’s Chief Information Officer report on this Form 4?

The Chief Information Officer, Donald Michael Westermann, reported selling 33,412 shares of Eastern Bankshares common stock on September 1, 2026 in two open-market or private sale transactions and updated his remaining direct and plan-based holdings.

How many EBC shares did the CIO sell on September 1, 2026, and at what prices?

Donald Michael Westermann sold 10,407 shares at $21.77 per share from his direct holdings and 23,005 shares at $21.43 per share from his 401(k) indirect holdings on September 1, 2026.

How many Eastern Bankshares (EBC) shares does the CIO hold after these transactions?

After the reported sales, Donald Michael Westermann holds 22,565 shares of Eastern Bankshares common stock directly and 4,990 shares indirectly through an ESOP, with no remaining 401(k) indirect holdings reported.

Were the EBC insider sales made under a Rule 10b5-1 trading plan?

No. The filing indicates the Rule 10b5-1 checkbox is not affirmed, and there is no footnote stating that the September 1, 2026 transactions were executed under a Rule 10b5-1 or other pre-arranged trading plan.

How are the CIO’s indirect EBC share holdings structured in this Form 4?

Indirect holdings are reported through a 401(k) plan and an ESOP. The CIO sold all 23,005 shares held via the 401(k), while 4,990 shares remain beneficially owned through the ESOP, including shares received from automatic dividend reinvestment.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Learn about SEC filing dates
SEC Form 4
FORM 4UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number:3235-0287
Estimated average burden
hours per response:0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
1. Name and Address of Reporting Person*
Westermann Donald Michael

(Last)(First)(Middle)
125 HIGH STREET

(Street)
BOSTON MASSACHUSETTS 02110

(City)(State)(Zip)

UNITED STATES

(Country)
2. Issuer Name and Ticker or Trading Symbol
Eastern Bankshares, Inc. [ EBC ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director10% Owner
XOfficer (give title below)Other (specify below)
Chief Information Officer
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
09/01/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year)2A. Deemed Execution Date, if any (Month/Day/Year)3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeVAmount(A) or (D)Price
Common Stock09/01/2026S10,407D$21.7722,565D
Common Stock09/01/2026S23,005D$21.430I(1)By 401(k)
Common Stock4,990I(1)By ESOP
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year)3A. Deemed Execution Date, if any (Month/Day/Year)4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year)7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Explanation of Responses:
1. Reflects the amount of shares beneficially owned, including shares received due to automatic dividend reinvestment, as of the date of this report.
/s/ Laura Vaughn Burek, by Power of Attorney09/02/2026
** Signature of Reporting PersonDate
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)