Eastern Bankshares officer to sell $227K in stock

Eastern Bankshares, Inc. (EBC) received a Form 144 notice indicating that officer Donald Westermann plans to sell common stock under Rule 144.

Rhea-AI Filing Summary

Eastern Bankshares, Inc. (EBC) received a Form 144 notice indicating that officer Donald Westermann plans to sell common stock under Rule 144. The notice covers up to 10,407 shares of common stock, with an indicated aggregate market value of $226,565.59, to be sold through Morgan Stanley Smith Barney LLC on or after September 1, 2026. The shares derive from restricted stock awards dated March 1, 2025 and March 1, 2026.

Key Figures

Shares to be sold: 10,407 shares Aggregate market value: $226,565.59 Proposed sale date: 09/01/2026 +2 more

5 metrics

Shares to be sold 10,407 shares Common stock covered by the Form 144 notice

Aggregate market value $226,565.59 Value associated with 10,407 common shares proposed for sale

Proposed sale date 09/01/2026 Date listed for the planned sale of common shares

Restricted Stock acquired 03/01/2026 5,127 shares Common stock from restricted stock granted by issuer

Restricted Stock acquired 03/01/2025 5,280 shares Common stock from restricted stock granted by issuer

Key Terms

Form 144, Rule 144, Restricted Stock, aggregate market value

4 terms

Form 144 regulatory

"144: Filer Information"

Form 144 is a document that investors must file with the government when they plan to sell a large number of shares of a company's stock. It helps ensure transparency so everyone knows how many shares are being sold and when, which can impact the stock's price.

Rule 144 regulatory

"See the definition of "person" in paragraph (a) of Rule 144."

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

Restricted Stock financial

"Common | 03/01/2026 | Restricted Stock | Issuer"

Shares granted to an individual that carry limits on transfer or sale until certain conditions are met, such as staying with the company for a set time or hitting performance targets. Think of them as a locked gift that gradually opens; for investors they matter because they affect how many shares may enter the market later, signal management incentives and potential dilution, and reveal confidence in future company performance.

aggregate market value financial

"Common | Morgan Stanley Smith Barney LLC... | 10407 | 226565.59"

Aggregate market value is the combined price you would pay to buy all outstanding shares of a company or all companies in a group at current market prices — essentially the sum of each stock’s market capitalization. It matters to investors because it shows the overall size and weight of an investment or sector (like the total cost to buy every piece of a puzzle), helps compare scale across companies or markets, and influences index composition and risk exposure.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What does the Form 144 filed for EBC disclose?

The Form 144 for EBC discloses that officer Donald Westermann intends to sell up to 10,407 common shares of Eastern Bankshares, Inc. under Rule 144, with an indicated aggregate market value of $226,565.59, through Morgan Stanley Smith Barney LLC.

How many EBC shares does Donald Westermann plan to sell under this Form 144?

Donald Westermann plans to sell up to 10,407 shares of Eastern Bankshares, Inc. common stock. These shares are associated with restricted stock awards and are being registered for potential sale under Rule 144.

What is the aggregate market value of the EBC shares covered by this Form 144?

The Form 144 lists an aggregate market value of $226,565.59 for the 10,407 Eastern Bankshares, Inc. common shares proposed to be sold. This amount reflects the value used in the filing for the covered securities.

When are the EBC shares expected to be sold according to the Form 144?

The Form 144 indicates a proposed sale date of September 1, 2026 for the Eastern Bankshares, Inc. common shares, subject to the conditions of Rule 144 and market execution through the designated broker.

What is the source of the EBC shares listed on this Form 144?

The shares listed come from Restricted Stock granted by the issuer, Eastern Bankshares, Inc., with acquisition dates of March 1, 2025 for 5,280 shares and March 1, 2026 for 5,127 shares.

Which broker is handling the proposed EBC share sale on this Form 144?

The proposed sale of Eastern Bankshares, Inc. common shares will be handled through Morgan Stanley Smith Barney LLC Executive Financial Services, as listed in the Form 144 securities information section.

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

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Available on EDGAR 09/01/2026 - 04:14 PM EDT Accepted by SEC EDGAR 09/01/2026 - 04:13 PM EDT Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001825585
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	EASTERN BANKSHARES, INC.
SEC File Number	001-39610
Address of Issuer	125 High Street Boston MASSACHUSETTS 02110
Phone	(800) 327-8376
Name of Person for Whose Account the Securities are To Be Sold	DONALD WESTERMANN
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Officer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	10407	226565.59	228511552	09/01/2026	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	03/01/2026	Restricted Stock	Issuer			5127	03/01/2026	Not Applicable
Common	03/01/2025	Restricted Stock	Issuer			5280	03/01/2025	Not Applicable

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Nothing to Report

144: Remarks and Signature

Remarks
Date of Notice	09/01/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ Don Michael Westermann
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)