Eastern Co (EML) director and 10% owner report $20.14 share purchase

Rhea-AI Filing Summary

EASTERN CO (EML) reporting person James A. Mitarotonda and affiliated Barington entities reported buying 2,433 common shares on December 12, 2025 at an average price of $20.1384 per share, through multiple trades priced between $20.10 and $20.20. After this transaction, Barington Companies Equity Partners, L.P. reports beneficial ownership of 634,933 Eastern Co shares held indirectly, and an additional 40,955 shares are reported as held directly. The filing identifies the group as a director and 10% owner of Eastern Co and describes a layered ownership structure linking Mitarotonda and several Barington entities. The reporting persons state that they disclaim beneficial ownership of these securities except to the extent of their pecuniary interests.

SEC Form 4

FORM 4

UNITED 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
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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^*

MITAROTONDA JAMES A

(Last) (First) (Middle)

888 SEVENTH AVENUE 6TH FL

(Street)

NEW YORK NY 10019

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
EASTERN CO [ EML ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director	X	10% Owner
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
12/12/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

	Form filed by One Reporting Person
X	Form filed by More than One Reporting Person

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)
			Code	V	Amount	(A) or (D)	Price
Common Shares	12/12/2025		P		2,433(3)	A	$20.1384	634,933	I	by Barington Companies Equity Partners, L.P.(1)(2)
Common Shares								40,955	D

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)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

1. Name and Address of Reporting Person^*

MITAROTONDA JAMES A

(Last) (First) (Middle)

888 SEVENTH AVENUE 6TH FL

(Street)

NEW YORK NY 10019

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer

X	Director	X	10% Owner
	Officer (give title below)		Other (specify below)

1. Name and Address of Reporting Person^*

BARINGTON COMPANIES EQUITY PARTNERS L P

(Last) (First) (Middle)

888 SEVENTH AVENUE 6TH FL

(Street)

NEW YORK NY 10019

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer

	Director	X	10% Owner
	Officer (give title below)		Other (specify below)

1. Name and Address of Reporting Person^*

BARINGTON COMPANIES MANAGEMENT, LLC

(Last) (First) (Middle)

888 SEVENTH AVENUE 6TH FL

(Street)

NEW YORK NY 10019

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer

	Director		10% Owner
	Officer (give title below)	X	Other (specify below)
			Investment Adviser

Explanation of Responses:

1. James A. Mitarotonda is the sole stockholder and director of LNA Capital Corp. LNA Capital Corp. is the general partner of Barington Capital Group, L.P., which is the majority member of Barington Companies Investors, LLC ("Barington Investors"). Barington Investors is the general partner of Barington Companies Equity Partners L.P. Barington Companies Management, LLC is the investment adviser to Barington Companies Equity Partners L.P.

2. Each of the reporting persons disclaims beneficial ownership of these securities, except to the extent of the pecuniary interests therein, and this report shall not be deemed to be an admission that each of the reporting persons is the beneficial owner of these shares for the purposes of Section 16 or any other purpose.

3. Shares acquired through multiple transactions with prices in the range of $20.10 to $20.20 per share.

	/s/James A. Mitarotonda	12/16/2025
	/s/ Barington Companies Equity Partners LP	12/16/2025
	/s/ Barington Companies Management, LLC	12/16/2025
	** Signature of Reporting Person	Date
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.

FAQ

What insider transaction did Eastern Co (EML) report in this Form 4?

The filing reports that 2,433 Eastern Co common shares were purchased on December 12, 2025 at an average price of $20.1384 per share.

Who is James A. Mitarotonda in relation to Eastern Co (EML)?

James A. Mitarotonda is a reporting person identified as a director and 10% owner of Eastern Co, acting through various affiliated Barington entities.

How many Eastern Co (EML) shares are beneficially owned after the reported trade?

After the transaction, 634,933 shares are reported as beneficially owned indirectly by Barington Companies Equity Partners, L.P., and 40,955 shares are reported as held directly.

At what prices were the Eastern Co (EML) shares acquired?

The 2,433 shares were acquired through multiple transactions with prices in the range of $20.10 to $20.20 per share, giving an average price of $20.1384.

Do the reporting persons claim full beneficial ownership of all reported Eastern Co (EML) shares?

No. The reporting persons state that they disclaim beneficial ownership of the securities, except to the extent of their pecuniary interests in the shares.

What entities are involved in the Eastern Co (EML) share ownership structure?

The explanation describes a chain involving LNA Capital Corp., Barington Capital Group, L.P., Barington Companies Investors, LLC, Barington Companies Equity Partners L.P., and Barington Companies Management, LLC as investment adviser.