FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 INITIAL STATEMENT OF 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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(Print or Type Responses)

1. Name and Address of Reporting Person *   Grennier R Scott 2. Date of Event Requiring Statement (Month/Day/Year) 08/01/2012 3. Issuer Name and Ticker or Trading Symbol OSHKOSH CORP [OSK] (Last) (First) (Middle) C/O OSHKOSH CORPORATION, 2307 OREGON STREET 4. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) Senior VP and Treasurer 5. If Amendment, Date Original Filed(Month/Day/Year) (Street) OSHKOSH, WI 54902 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 Beneficially Owned

1.Title of Security (Instr. 4) 2. Amount of Securities Beneficially Owned (Instr. 4) 3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 4. Nature of Indirect Beneficial Ownership (Instr. 5) Common Stock 2,713.16 (1) D Â

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.			SEC 1473 (7-02)
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Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Option (2)	  (3)	10/16/2018	Common Stock	10,000	$ 12.04	D	Â
Option (2)	  (4)	09/14/2016	Common Stock	12,000	$ 32.1	D	Â
Option (2)	  (5)	09/20/2017	Common Stock	14,000	$ 28.73	D	Â
Stock Appreciation Right (6)	  (7)	09/19/2018	Common Stock	12,000	$ 19.24	D	Â
Restricted Stock Unit Award (8)	  (9)	12/15/2014	Common Stock	6,000	$ 0 (8)	D	Â

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Grennier R Scott C/O OSHKOSH CORPORATION 2307 OREGON STREET OSHKOSH, WI 54902	Â	Â	  Senior VP and Treasurer	Â

Signatures

R. Scott Grennier		08/01/2012
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 5(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)	Total includes 1,667 shares of Restricted Stock, subject to certain vesting and forfeiture provisions.
(2)	Option (right to buy) granted pursuant to the Company's Stock Plan.
(3)	Options vest in one-third (1/3) annual increments commencing on 09/16/2009.
(4)	Options vest in one-third (1/3) annual increments commencing on 09/14/2010.
(5)	Options vest in one-third (1/3) annual increments commencing on 09/20/2011.
(6)	Stock Appreciation Rights Award granted pursuant to the Company's Stock Plan.
(7)	Stock Appreciation Rights Award vests in one-third (1/3) annual increments commencing on 9/19/2012.
(8)	Restricted Stock Unit Award granted pursuant to the Company's Stock Plan.
(9)	Restricted Stock Unit Award vests in one-third (1/3) annual increments commencing on 9/19/2012.

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