FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person * LEGANZA LEONARD F   2. Issuer Name and Ticker or Trading Symbol EASTERN CO [EML] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) __X__ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) Chairman, President & CEO (Last) (First) (Middle) 112 BRIDGE STREET 3. Date of Earliest Transaction (Month/Day/Year) 12/15/2009 (Street) NAUGATUCK, CT 06770 4. If Amendment, Date Original Filed(Month/Day/Year) 6. Individual or Joint/Group Filing(Check Applicable Line) _X_ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned

1.Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock (1) 12/15/2009   M   19,671 A $ 10.17 110,124 D

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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 3)

2. Conversion or Exercise Price of Derivative Security

3. Transaction Date (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

4. Transaction Code (Instr. 8)

5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5)

6. Date Exercisable and Expiration Date (Month/Day/Year)

7. Title and Amount of Underlying Securities (Instr. 3 and 4)

8. Price of Derivative Security (Instr. 5)

9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)

10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)

11. Nature of Indirect Beneficial Ownership (Instr. 4)

Code

V

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Qualified employee stock option (2)

$ 10.17

12/15/2009

M

19,671

12/15/1999

12/15/1999

Common Stock

19,671

$ 0

0

D

Non-qualified employee stock option (3)

$ 10.17

12/15/1999

D

62,829

12/15/1999

12/15/1999

Common Stock

62,829

$ 0

0

D

Qualified employee stock option (4)

$ 9.5

07/19/2000

A

0

(4)

07/19/2000

Common Stock

48,750

$ 0

48,750

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
LEGANZA LEONARD F 112 BRIDGE STREET NAUGATUCK, CT 06770	X		Chairman, President & CEO

Signatures

/s/Leonard F. Leganza		12/16/2009
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 4(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	19,671 shares were exercised on December 15, 2009 at $10.17 per share. Original 12/15/1999 option was for 13,114 shares at $15.25 per share. As a result of a 3-for-2 stock split effective 10/18/2006, this option is now 19,671 shares at $10.17 per share.
(2)	Original 12/15/1999 option was for 13,114 shares at $15.25 per share. As a result of a 3-for-2 stock split effective 10/18/2006, this option is now 19,671 shares at $10.17 per share. On December 15, 2009, 19,671 shares were exercised at $10.17 per share, leaving a zero balance.
(3)	Original 12/15/1999 option was for 41,886 shares at $15.25 per share. As a result of a 3-for-2 stock split effective 10/18/2006, this option is now 62,829 shares at $10.17 per share. On December 15, 2009 these options lapsed.
(4)	The original 7/19/2000 option was for 32,500 shares at $14.25 per share. 7,017 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; 7,017 shares were vested on 1/1/2004 and the remaining 4,432 shares vested on 1/1/2005. As a result of a 3-for2 stock split effective 10/18/2006, this option is now 48,750 shares at $9.50 per share.

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