Michael J. Mardy's Director's Fee Program Transaction

Michael J. Mardy acquired 1099 shares of Eastern Co. common stock under the Director's Fee Program on March 16, 2026. The shares were issued pursuant to rule 16b-3(d), with the price determined by the March 13, 2026 stock price of $20.93 per share. Following this transaction, Mardy holds 18,065 shares. This transaction is a result of his role as a director, not an officer or ten percent owner. The filing is Form 4, signed on March 17, 2026.