Ownership Submission
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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(Print or Type Responses)
1. Name and Address of Reporting Person *
Breeden Richard C
   2. Issuer Name and Ticker or Trading Symbol
STERIS CORP [STE] 		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)
C/O BREEDEN CAPITAL MANAGEMENT LLC, 100 NORTHFIELD STREET		 3. Date of Earliest Transaction (Month/Day/Year)
07/31/2008
(Street)

GREENWICH, CT 06830		 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 Shares, No Par Value 07/31/2008   A   1,097 (1) A $ 34.17 1,097 D  
Common Shares, No Par Value 07/31/2008   A   1,097 (2) A $ 0 2,194 D  
Common Shares, No Par Value               5,067,321 I See footnotes (3) (4)

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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
Option to Purchase Common Shares $ 34.17 07/31/2008   A   2,744 (5)   01/31/2009 07/31/2018 Common Shares, No Par Value 2,744 $ 0 2,744 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
Breeden Richard C
C/O BREEDEN CAPITAL MANAGEMENT LLC
100 NORTHFIELD STREET
GREENWICH, CT 06830		   X      

Signatures

 /s/ Richard C. Breeden   08/01/2008
**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) Pursuant to the governing documents of Breeden Partners L.P., Breeden Partners (California) L.P., Breeden Partners (California) II L.P., Breeden Partners Holdco Ltd. and Breeden Partners (Cayman) Ltd. (the "Funds"), any profits realized with respect to this grant will be apportioned among the Funds.
(2) These 1,097 Common Shares are restricted. The restrictions on these 1,097 Common Shares lapse on February 2, 2009. Pursuant to the Funds' governing documents, any profits realized with respect to this grant will be apportioned among the Funds.
(3) Richard C. Breeden is the managing member of Breeden Capital Partners LLC, managing member and chairman and chief executive officer of Breeden Capital Management LLC and the Key Principal of Breeden Partners (Cayman) Ltd. Breeden Capital Partners LLC is in turn the general partner of Breeden Partners L.P., Breeden Partners (California) L.P. and Breeden Partners (California) II L.P.
(4) Pursuant to Rule 16a-1(a)(2)(ii)(B) of the Securities Exchange Act of 1934, as amended, Mr. Breeden in his capacity as managing member, as well as chairman and chief executive officer of Breeden Capital Management LLC, may be deemed to be the indirect beneficial owner of the Common Shares owned by Breeden Partners L.P., Breeden Partners (California) L.P., Breeden Partners (California) II L.P., Breeden Partners Holdco Ltd. and Breeden Partners (Cayman) Ltd.; however, he disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein.
(5) Pursuant to the Funds' governing documents, any profits realized with respect to these stock options will be apportioned among the Funds.

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