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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1. Name and Address of Reporting Person *   Zangerle John Adam 2. Date of Event Requiring Statement (Month/Day/Year) 07/25/2013 3. Issuer Name and Ticker or Trading Symbol STERIS CORP [STE] (Last) (First) (Middle) 5960 HEISLEY ROAD 4. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) VP, Gen Counsel, and Sec. 5. If Amendment, Date Original Filed(Month/Day/Year) (Street) MENTOR, OH 44060 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 Shares, No Par Value 13,211 (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 to Purchase Common Shares	  (2)	05/22/2014	Common Shares, No Par Value	5,000	$ 27.44	D	Â
Option to Purchase Common Shares	  (3)	06/16/2015	Common Shares, No Par Value	2,925	$ 24.45	D	Â
Option to Purchase Common Shares	  (4)	09/12/2016	Common Shares, No Par Value	2,200	$ 24.72	D	Â
Option to Purchase Common Shares	  (5)	07/27/2017	Common Shares, No Par Value	2,200	$ 27.68	D	Â
Option to Purchase Common Shares	  (6)	05/21/2018	Common Shares, No Par Value	3,100	$ 30.84	D	Â
Option to Purchase Common Shares	  (7)	05/21/2019	Common Shares, No Par Value	3,150	$ 22.83	D	Â
Option to Purchase Common Shares	  (8)	05/20/2020	Common Shares, No Par Value	3,000	$ 31.87	D	Â
Option to Purchase Common Shares	  (9)	05/31/2021	Common Shares, No Par Value	3,500	$ 36.09	D	Â
Option to Purchase Common Shares	  (10)	05/30/2022	Common Shares, No Par Value	3,800	$ 29.94	D	Â
Option to Purchase Common Shares	  (11)	05/31/2023	Common Shares, No Par Value	6,000	$ 45.34	D	Â

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Zangerle John Adam 5960 HEISLEY ROAD MENTOR, OH 44060	Â	Â	  VP, Gen Counsel, and Sec.	Â

Signatures

/s/ Dennis P. Patton, Authorized Representative under Power of Attorney		07/29/2013
**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)	10,800 of these Common Shares are restricted. The restrictions on these Common Shares lapse as follows: 1,200 on May 20, 2014, 1,200 on June 1, 2015, 1,400 on May 31, 2016, 1,000 on August 1, 2016, 1,000 on November 28, 2016 and 5,000 on May 31, 2017.
(2)	These options became exercisable as follows: 1,250 on April 22, 2005, 1,250 on April 22, 2006, 1,250 on April 22, 2007 and 1,250 on April 22, 2008.
(3)	These options became exercisable as follows: 975 on May 16, 2007, 975 on May 16, 2008 and 975 on May 16, 2009.
(4)	These options became exercisable as follows: 550 on September 12, 2007, 550 on September 12, 2008, 550 on September 12, 2009 and 550 on September 12, 2010.
(5)	These options became exercisable as follows: 550 on July 27, 2008, 550 on July 27, 2009, 550 on July 27, 2010 and 550 on July 27, 2011.
(6)	These options became exercisable as follows: 775 on May 21, 2009, 775 on May 21, 2010, 775 on May 21, 2011 and 775 on May 21, 2012.
(7)	These options became exercisable as follows: 788 on May 21, 2010, 787 on May 21, 2011, 788 on May 21, 2012 and 787 on May 21, 2013.
(8)	These options became or will become exercisable as follows: 750 on May 20, 2011, 750 on May 20, 2012, 750 on May 20, 2013 and 750 on May 20, 2014.
(9)	These options became or will become exercisable as follows: 875 on May 31, 2012, 875 on May 31, 2013, 875 on May 31, 2014 and 875 on May 31, 2015.
(10)	These options became or will become exercisable as follows: 950 on May 30, 2013, 950 on May 30, 2014, 950 on May 30, 2015 and 950 on May 30, 2016.
(11)	These options become exercisable as follows: 1,500 on May 31, 2014, 1,500 on May 31, 2015, 1,500 on May 31, 2016 and 1,500 on May 31, 2017.

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