- Statement of Changes in Beneficial Ownership (4)

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	OMB APPROVAL OMB Number: 3235-0287 Expires: February 28, 2011 Estimated average burden hours per response... 0.5
	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(f) of the Investment Company Act of 1940

1. Name and Address of Reporting Person * HALBROOK JOHN A	2. Issuer Name and Ticker or Trading Symbol WOODWARD GOVERNOR CO [ WGOV ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) __ X __ Director                      _____ 10% Owner _____ Officer (give title below)      _____ Other (specify below)
(Last)          (First)          (Middle) 1000 E. DRAKE ROAD	3. Date of Earliest Transaction (MM/DD/YYYY) 8/16/2010
(Street) FORT COLLINS, CO 80525 (City)        (State)        (Zip)	4. If Amendment, Date Original Filed (MM/DD/YYYY)	6. Individual or Joint/Group Filing (Check Applicable Line) _ X _ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security (Instr. 3)	2. Trans. Date	2A. Deemed Execution Date, if any	3. Trans. 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
Woodward Governor Company Common Stock	8/16/2010		M		30534   (1)	A	$6.9689	1509429	D
Woodward Governor Company Common Stock	8/16/2010		M		54266	A	$8.1667	1563695	D
Woodward Governor Company Common Stock	8/16/2010		F		23385   (2)	D	$28.05	1540310	D
Woodward Governor Company Common Stock	8/16/2010		S		22532   (3)	D	$28.0635	1517778	D

Table II - Derivative Securities Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Trans. Date	3A. Deemed Execution Date, if any	4. Trans. 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		7. Title and Amount of Securities Underlying Derivative Security (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
Nonqualified Stock Option (right to buy)	$6.9689	8/16/2010		M			30534	11/21/2001   (4)	11/21/2010	Common Stock	30534	$0.00	0	D
Nonqualified Stock Option (right to buy)	$8.1667	8/16/2010		M			54266	10/1/2002   (5)	10/1/2011	Common Stock	54266	$0.00	245734	D

Explanation of Responses:
( 1)	The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on June 3, 2010.
( 2)	Shares delivered to the Company in payment of exercise prices incident to the exercises of securities issued in accordance with Rule 16b-3. Shares delivered cover the aggregrate payment incident to the exercises of all options reported hereby.
( 3)	Shares sold to cover tax liability incident to the exercises of securities issued in accordance with Rule 16b-3. Shares sold cover the aggregate tax liability incident to the exercises of all options reported hereby. The reporting person executed a trade order through a broker-dealer which resulted in multiple same day, same-way open market sales, with the prices ranging from $28.00 to $28.34 per share. The reporting person has reported these sales on an aggregate basis using the weighted average price for the transactions. The reporting person undertakes to provide, upon request by the Securities and Exchange Commission staff, the Company or a security holder of the Company, full information regarding the number of shares sold at each separate price.
( 4)	Options, which expire in November 2010, became exercisable at the rate of 25% per year beginning 11/21/2001.
( 5)	Options, which expire in October 2011, became exercisable at the rate of 25% per year beginning 10/01/2002.

Reporting Owners
Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
HALBROOK JOHN A 1000 E. DRAKE ROAD FORT COLLINS, CO 80525	X

Signatures
Jody L. Harrell by Power of Attorney		8/18/2010
** Signature of Reporting Person		Date

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
*	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).
Note:	File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
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