JAMES A. MITAROTONDA - 16 Dec 2025 Form 4 Insider Report for EASTERN CO (EML)

Role: Director, 10%+ Owner
Signature: /s/James A. Mitarotonda
Issuer symbol: EML
Transactions as of: 16 Dec 2025
Transactions value $: $35,952
Form type: 4
Filing time: 17 Dec 2025, 16:28:40 UTC
Previous filing: 16 Dec 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
MITAROTONDA JAMES A	Director, 10%+ Owner	888 SEVENTH AVENUE 6TH FL, NEW YORK	/s/James A. Mitarotonda	17 Dec 2025	0001254583

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	EML	Common Shares	Purchase	$36K	+1.84K	+4.49%	$19.55	42.8K	16 Dec 2025	Direct	F1
holding	EML	Common Shares						635K	16 Dec 2025	By Barington Company Equity Partners	F2, F3

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	1,839 Shares issued under The Eastern Company Director's Fee Program pursuant to rule 16b-3(d). The price used to determine the number of shares is the price of the shareson December 15, 2025.
F2	The reporting person 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.
F3	The reporting person 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 the reporting person is the beneficial owner of these shares for the purposes of Section 16 or any other purpose.