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

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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^*

AAMOTH WILLIAM L

(Last)

(First)

(Middle)

5960 HEISLEY ROAD

(Street)

MENTOR

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)
	V P - Corporate Treasurer

3. Date of Earliest Transaction (Month/Day/Year)
01/25/2013

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Shares, No Par Value	01/25/2013		M		2,000	A	$27.45	10,027	D
Common Shares, No Par Value	01/25/2013		S⁽¹⁾		2,000	D	$37.4678⁽²⁾	8,027	D
Common Shares, No Par Value	01/28/2013		M		4,525	A	$27.68	12,552	D
Common Shares, No Par Value	01/28/2013		S⁽³⁾		4,525	D	$37.68	8,027⁽⁴⁾	D
Common Shares, No Par Value								500	I	See Footnote Below.⁽⁵⁾
Common Shares, No Par Value								635	I	See Footnote Below.⁽⁶⁾

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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
Employee Stock Option Exercise	$27.45	01/25/2013		M			2,000	⁽⁷⁾	09/12/2016	Common Shares, No Par Value	2,000	$0	0	D
Employee Stock Option Exercise	$27.68	01/28/2013		M			4,525	⁽⁸⁾	07/27/2017	Common Shares, No Par Value	4,525	$0	0	D

Explanation of Responses:

1. These open market sales of a total of 2,000 Common Shares is pursuant to a Rule 10b5-1 Stock Trading Plan entered into by the Reporting Person on August 3, 2012.

2. This represents the average sales price of the shares sold. The actual 7 sales prices ranged from $37.45 per share to $37.50 per share. Issuer, upon request by the SEC staff, will provide full information regarding the number of shares sold at each of these 7 sales prices.

3. These open market sales of a total of 4,525 Common Shares is pursuant to a Rule 10b5-1 Stock Trading Plan entered into by the Reporting Person on August 3, 2012.

4. 5,280 of these Common Shares are restricted. The restrictions on these Common Shares lapse as follows: 2,680 on May 20, 2014, 500 on May 31, 2013, 500 on June 2, 2014, 500 on June 1, 2015, 275 on May 30, 2013, 275 on May 30, 2014, 275 on June 1, 2015 and 275 on May 31, 2016.

5. Represents an investment by Mr. Aamoth in his Vanguard William L. Aamoth - Rollover IRA Brokerage Account.

6. Represents 647.944 units of the STERIS Corporation 401(k) Plan STERIS Stock Fund which equals 635 Common share equivalents as of January 28, 2013.

7. These options became exercisable as follows: 500 on November 1, 2008, 500 on November 1, 2009, 500 on November 1, 2010 and 500 on November 1, 2011.

8. These options became exercisable as follows: 1,131 on July 27, 2008, 1,131 on July 27, 2009, 1,131 on July 27, 2010 and 1,132 on July 27, 2011.

	/s/ Dennis P. Patton, Authorized Representative under Power of Attorney	01/29/2013
	** 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).
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