EASTERN CO — Director's Dealing 2010

May 20, 2010

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: EASTERN CO (EML)
CIK: 0000031107
Period of Report: 2010-05-18

Reporting Person: Sapack Kenneth (Chief Accounting Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2010-05-18	Common Stock	M	1500	$9.50	Acquired	1500	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2010-05-18	Qualified employee stock option	$9.5	M	1500	Disposed	2010-07-19	Common Stock (21500)	Direct
2001-04-26	Qualified employee stock option	$9.6	A	0	Acquired	2011-04-26	Common Stock (7500)	Direct

Footnotes

F1: 1,500 shares were exercised on May 18, 2010 at $9.50 per share. Original 7/19/2000 option was for 15,000 shares at $14.25
per share. 7,017 shares were vested on 7/19/2000; 7,017 shares were vested on 1/1/2001; and 966 shares were vested on
1/1/2002. As a result of a 3-for-2 stock split effective 10/18/2006 this option is now for 22,500 shares at $9.50 per
share.

F2: Original 7/19/2000 option was for 15,000 shares at $14.25 per share. 7,017 shares were vested on 7/19/2000; 7,017 shares were
vested on 1/1/2001; and 966 shares were vested on 1/1/2002. As a result of a 3-for-2 stock split effective 10/18/2006 this
option is now for 22,500 shares at $9.50 per share. On April 23, 2010 1,000 shares were exercised and on May 18, 2010 1,500
were exercised at $9.50 per share, leaving a balance of 20,000 shares.

F3: Original 4/26/2001 option was for 5,000 shares at $14.40 per share. As a result of a 3-for-2 stock split effective
10/18/2006 this option is now for 7,500 shares at $9.60 per share.