X0508 4 2026-03-16 false 0000031107 EASTERN CO EML 0001254583 MITAROTONDA JAMES A 888 SEVENTH AVENUE 6TH FL NEW YORK NY 10019 true false true false Common Shares 2026-03-16 4 P false 1717 20.93 A 44511 D Common Shares 642342 I By Barington Companies Equity Partners, L.P. 1717 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 shares on March 13, 2026. 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. 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. /s/James A. Mitarotonda 2026-03-17