SEC FORM 3

SEC Form 3

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
or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person^*

Blackmore R Gregoire

(Last)

(First)

(Middle)

5960 HEISLEY ROAD

(Street)

MENTOR

44060

(City)

(State)

(Zip)

2. Date of Event Requiring Statement (Month/Day/Year)
12/16/2008

3. Issuer Name and Ticker or Trading Symbol
STERIS CORP [ STE ]

4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director	10% Owner
X	Officer (give title below)	Other (specify below)
	SVP & Group President, L.S.

5. 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 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	6,760⁽¹⁾	D

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: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
1. Title of Derivative Security (Instr. 4)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
Option to Purchase Common Shares	05/16/2009	06/16/2015	Common Shares, No Par Value	1,969	$24.45	D
Option to Purchase Common Shares	⁽²⁾	09/12/2016	Common Shares, No Par Value	4,688	$24.72	D
Option to Purchase Common Shares	⁽³⁾	07/27/2017	Common Shares, No Par Value	4,538	$27.68	D
Option to Purchase Common Shares	⁽⁴⁾	05/21/2018	Common Shares, No Par Value	8,750	$30.84	D

Explanation of Responses:

1. All 6,760 of these Common Shares are restricted. The restrictions on these Common Shares lapse as follows: 1,910 on September 7, 2009, 2,000 on July 27, 2010, and 2,850 on May 23, 2011.

2. These options became or become exercisable as follows: 1,562 on September 12, 2008, 1,563 on September 12, 2009 and 1,563 on September 12, 2010.

3. These options become exercisable as follows: 1,512 on July 27, 2009, 1,513 on July 27, 2010 and 1,513 on July 27, 2011.

4. These options become exercisable as follows: 2,187 on May 21, 2009, 2,187 on May 21, 2010, 2,188 on May 21, 2011 and 2,188 on May 21, 2012.

	Dennis P. Patton, Authorized Representative under Power of Attorney	12/18/2008
	** 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 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).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
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