Eastern Bankshares officer plans $296K stock sale

Eastern Bankshares, Inc. (EBC) officer Steven Louis Antonakes filed a Rule 144 notice to sell up to 13,500 shares of Eastern Bankshares common stock through Morgan Stanley Smith Barney LLC.

Rhea-AI Filing Summary

Eastern Bankshares, Inc. (EBC) officer Steven Louis Antonakes filed a Rule 144 notice to sell up to 13,500 shares of Eastern Bankshares common stock through Morgan Stanley Smith Barney LLC. The shares, with an aggregate market value of $296,329.05, relate to restricted stock awards dated March 1, 2023 and March 1, 2024, with a stated sale date of September 1, 2026.

Key Figures

Shares to be sold: 13,500 shares of common stock Aggregate market value: $296,329.05 Sale date: 09/01/2026 +3 more

6 metrics

Shares to be sold 13,500 shares of common stock Shares covered by Rule 144 notice for Eastern Bankshares, Inc.

Aggregate market value $296,329.05 Aggregate market value of the 13,500 shares covered by the notice

Sale date 09/01/2026 Date associated with the planned sale of common stock

Restricted stock award 1 6,487 shares Common stock from restricted stock dated 03/01/2023

Restricted stock award 2 6,417 shares Common stock from restricted stock dated 03/01/2024

Restricted stock award 3 596 shares Common stock from restricted stock dated 03/01/2024

Key Terms

Rule 144, Restricted Stock, aggregate market value, NASDAQ

4 terms

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 | 03/01/2023 | 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 Executive Financial Services ... | 13500 | 296329.05 |"

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.

NASDAQ market

"| 228511552 | 09/01/2026 | NASDAQ"

The Nasdaq is a stock exchange where many companies' shares are bought and sold, functioning much like a marketplace for investments. It matters to investors because it provides a platform to buy and sell ownership stakes in companies, helping them track the value of those companies and make informed decisions. As one of the largest and most technology-focused markets, it also reflects trends and developments in the business world.

FAQ

What does the Form 144 filing disclose for Eastern Bankshares, Inc. (EBC)?

The filing discloses that officer Steven Louis Antonakes intends to sell up to 13,500 shares of Eastern Bankshares, Inc. common stock under Rule 144, with an aggregate market value of $296,329.05, through Morgan Stanley Smith Barney LLC.

How many EBC shares are covered by Steven Antonakes’ Form 144?

The notice covers up to 13,500 shares of Eastern Bankshares, Inc. common stock. These shares are tied to restricted stock awards dated March 1, 2023 and March 1, 2024, each with specific share amounts listed in the filing.

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

The filing lists an aggregate market value of $296,329.05 for the 13,500 Eastern Bankshares, Inc. common shares covered by the planned Rule 144 sale.

When is the sale of EBC shares expected to occur under this Form 144?

The filing states a date of September 1, 2026 in connection with the planned sale of Eastern Bankshares, Inc. common shares under Rule 144.

What types of securities are being sold in this Eastern Bankshares (EBC) Form 144?

The securities are common stock of Eastern Bankshares, Inc., originating from restricted stock awards issued on March 1, 2023 and March 1, 2024, with separate share amounts shown for each award.

Which broker is handling the planned sale of Eastern Bankshares (EBC) shares?

The planned sale will be handled through Morgan Stanley Smith Barney LLC Executive Financial Services, located at 1 New York Plaza, 8th Floor, New York, NY 10004, as identified in the filing.

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

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Available on EDGAR 09/01/2026 - 04:11 PM Accepted by SEC EDGAR 09/01/2026 - 04:10 PM 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	0001825588
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	STEVEN ANTONAKES
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	13500	296329.05	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	03/01/2023	Restricted Stock	Issuer			6487	03/01/2023	Not Applicable
Common	03/01/2024	Restricted Stock	Issuer			6417	03/01/2024	Not Applicable
Common	03/01/2024	Restricted Stock	Issuer			596	03/01/2024	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/ Steven Louis Antonakes
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)