EASTERN CO — Director's Dealing 2009

May 22, 2009

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: EASTERN CO (EML)
CIK: 0000031107
Period of Report: 2009-05-20

Reporting Person: SULLIVAN JOHN L III (Vice President & CFO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2009-05-20	Common Stock	A	219	—	Acquired	15821	Direct
2009-05-20	Common Stock	F	15821	$14.24	Disposed	0	Direct
2009-05-20	Common Stock	M	18750	$12.33	Acquired	18750	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2009-05-20	Qualified employee stock option	$12.33	M	18750	Disposed	2009-07-21	Common Stock (18750)	Direct
1999-12-15	Non-qualified employee stock option	$10.17	A	0	Acquired	2009-12-15	Common Stock (15000)	Direct
2000-07-19	Qualified employee stock option	$9.50	A	0	Acquired	2010-07-19	Common Stock (30000)	Direct
2001-04-26	Qualified employee stock option	$9.6	A	0	Acquired	2011-04-26	Common Stock (22500)	Direct

Footnotes

F1: 219 shares acquired at various prices for the period of January 1, 2009 through May 6, 2009 under The Eastern Company
Dividend Reinvestment Plan and The Eastern Company Employee Stock Purchase Plan.

F2: 18,750 shares of previously acquired Eastern Company stock were surrendered to Eastern Treasury at the closing price on May
20, 2009 of $14.24 per share, for the purchase of stock options by Mr. Sullivan.

F3: 18,750 shares exercised on May 20, 2009 at $14.24 per share by Mr. Sullivan. Original 7/21/1999 option was for 12,500 shares
at $18.50 per share. 5,400 shares were vested on date of grant 7/21/1999;
5,400 shares were vested on 1/1/2000 and the remaining 1,700 shares were vested on 1/1/2001. As a result of a 3-for-2 stock
split effective 10/18/2006 this option is now for 18,750 shares at $12.33 per share.

F4: Original 7/21/1999 option was for 12,500 shares at $18.50 per share. 5,400 shares were vested on date of grant 7/21/1999;
5,400 shares were vested on 1/1/2000 and the remaining 1,700 shares were vested on 1/1/2001. As a result of a 3-for-2 stock
split effective 10/18/2006 this option is now for 18,750 shares at $12.33 per share. On May 20, 2009, 18,750 shares were
exercised at $14.24 per share, leaving a zero balance.

F5: Original 12/15/1999 option was for 10,000 shares at $15.25 per share. As a result of a 3-for-2 stock split effective
10/18/2006 this option is now for 15,000 shares at $10.17 per share.

F6: Original 7/19/2000 option was for 20,000 shares at $14.25 per share. 4,810 shares were vested on 1/1/2001; 7,017 shares were
vested on 1/1/2002; 7,017 shares were vested on 1/1/2003, and the remaining 1,156 shares were vested on 1/1/2004. As a
result of a 3-for-2 stock split effective 10/18/2006 this option is now for 30,000 shares at $9.50 per share.

F7: Original 4/26/2001 option was for 15,000 shares at $14.40 per share. 5,800 shares were vested on 1/1/2004; 6,944 shares were
vested on 1/1/2005, and the remaining 2,256 shares were vested on 1/1/2006. As a result of a 3-for-2 stock split effective
10/18/2006 this option is now for 22,500 shares at $9.60 per share.