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SEC FORM 4 SEC Form 4
FORM 4 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940 		 
OMB APPROVAL
OMB Number: 3235-0287
Estimated average burden
hours per response: 0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
1. Name and Address of Reporting Person*
MOSS ROBERT E
(Last) (First) (Middle)
5960 HEISLEY ROAD
(Street)
MENTOR OH 44060
(City) (State) (Zip)
2. Issuer Name and Ticker or Trading Symbol
STERIS CORP [ STE ] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director 10% Owner
X Officer (give title below) Other (specify below)
Senior Vice President
3. Date of Earliest Transaction (Month/Day/Year)
08/03/2012
4. If Amendment, Date of 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
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 08/03/2012 M 9,000 A $24.45 33,512 D
Common Shares, No Par Value 08/03/2012 S(1) 9,000 D $32.5 24,512 D
Common Shares, No Par Value 08/06/2012 M 9,000 A $24.45 33,512 D
Common Shares, No Par Value 08/06/2012 S(2) 9,000 D $33 24,512(3) D
Common Shares, No Par Value 13,822 I See Footnote Below.(4)
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 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: 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 $24.45 08/03/2012 M 9,000 (5) 06/16/2015 Common Shares, No Par Value 9,000 $0 9,000 D
Option to Purchase Common Shares $24.45 08/06/2012 M 9,000 (6) 06/16/2015 Common Shares, No Par Value 9,000 $0 0 D
Explanation of Responses:
1. These open market sales of a total of 9,000 Common Shares is pursuant to a Rule 10b5-1 Stock Trading Plan entered into by the Reporting Person on June 6, 2012.
2. These open market sales of a total of 9,000 Common Shares is pursuant to a Rule 10b5-1 Stock Trading Plan entered into by the Reporting Person on June 6, 2012.
3. 9,800 of these Common Shares are restricted. The restrictions on these Common Shares lapse as follows: 500 on October 8, 2012, 4,500 on May 20, 2014, 800 on May 31, 2013, 800 on June 2, 2014, 800 on June 1, 2015, 800 on May 30, 2013, 800 on May 30, 2014 and 800 on June 1, 2015.
4. This indirect ownership by Mr. Moss is through the Moss Family Trust, Robert E. Moss and Patricia J. Moss as Co-Trustees dated May 24, 1999.
5. These options become exercisable as follows: 4,500 on May 16, 2006 and 4,500 on May 16, 2007.
6. These options become exercisable as follows: 4,500 on May 16, 2008 and 4,500 on May 16, 2009.
/s/ Dennis P. Patton, Authorized Representative under Power of Attorney 08/06/2012
** 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.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.