Aamoth william l - see footnote below investment history in Steris corp

Filed on 2012-08-06 by Aamoth William L SEC CIK 1236375 Form 4

Accession 0001181431-12-043878.txt Sec File: edgar/data/1236375/0001181431-12-043878-index.htm

2012-08-03 Aamoth William L (CIK 1236375) through See Footnote Below (V P - Corporate Treasurer)

Invested in Steris Corp sold 701 shares at $32.282 remaining shares owned 0

Common Shares No Par Value Steris Corp Ste Transaction code: W Acquisition or disposition by will or laws of descent and distribution

f2 on july 6, 2012, the reporting person and his brother agreed to become co-trustees of this family trust of which they are co-beneficiaries. the reporting person disclaims beneficial ownership of these securities, except to the extent of his pecuniary interest therein. on august 3, 2012 the family trust sold in the open market the steris common shares held by the family trust.


Filed on 2012-08-06 by Aamoth William L SEC CIK 1236375 Form 4

Accession 0001181431-12-043878.txt Sec File: edgar/data/1236375/0001181431-12-043878-index.htm

2012-08-03 Aamoth William L (CIK 1236375) through See Footnote Below (V P - Corporate Treasurer)

Invested in Steris Corp sold 2672 shares at $32.2515 remaining shares owned 8027

Common Shares No Par Value Steris Corp Ste Transaction code: S Open market or private sale of securities

f1 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.


Filed on 2012-08-06 by Aamoth William L SEC CIK 1236375 Form 4

Accession 0001181431-12-043878.txt Sec File: edgar/data/1236375/0001181431-12-043878-index.htm

2012-08-03 Aamoth William L (CIK 1236375) through See Footnote Below (V P - Corporate Treasurer)

Invested in Steris Corp remaining shares owned 635

Common Shares No Par Value Steris Corp Ste

f4 represents 648.151 units of the steris corporation 401(k) plan steris stock fund which equals 635 common share equivalents as of august 3, 2012.


Filed on 2012-08-06 by Aamoth William L SEC CIK 1236375 Form 4

Accession 0001181431-12-043878.txt Sec File: edgar/data/1236375/0001181431-12-043878-index.htm

2012-08-03 Aamoth William L (CIK 1236375) through See Footnote Below (V P - Corporate Treasurer)

Invested in Steris Corp remaining shares owned 500

Common Shares No Par Value Steris Corp Ste

f3 represents an investment by mr. aamoth in his vanguard william l. aamoth - rollover ira brokerage account.


Filed on 2012-07-10 by Aamoth William L SEC CIK 1236375 Form 4

Accession 0001181431-12-040276.txt Sec File: edgar/data/1236375/0001181431-12-040276-index.htm

2012-07-06 Aamoth William L (CIK 1236375) through See Footnote Below (V P - Corporate Treasurer)

Invested in Steris Corp bought 701 shares at $0 remaining shares owned 701

Common Shares No Par Value Steris Corp Ste Transaction code: W Acquisition or disposition by will or laws of descent and distribution

f1 represents common shares held by a family trust. as of july 6, 2012, the reporting person and his brother agreed to become co-trustees of this family trust of which they are co-beneficiaries. the reporting person disclaims beneficial ownership of these securities, except to the extent of his pecuniary interest therein.


Filed on 2012-07-10 by Aamoth William L SEC CIK 1236375 Form 4

Accession 0001181431-12-040276.txt Sec File: edgar/data/1236375/0001181431-12-040276-index.htm

2012-07-06 Aamoth William L (CIK 1236375) through See Footnote Below (V P - Corporate Treasurer)

Invested in Steris Corp remaining shares owned 635

Common Shares No Par Value Steris Corp Ste

f4 represents 648.151 units of the steris corporation 401(k) plan steris stock fund which equals 635 common share equivalents as of july 6, 2012.


Filed on 2012-07-10 by Aamoth William L SEC CIK 1236375 Form 4

Accession 0001181431-12-040276.txt Sec File: edgar/data/1236375/0001181431-12-040276-index.htm

2012-07-06 Aamoth William L (CIK 1236375) through See Footnote Below (V P - Corporate Treasurer)

Invested in Steris Corp remaining shares owned 500

Common Shares No Par Value Steris Corp Ste

f3 represents an investment by mr. aamoth in his vanguard william l. aamoth - rollover ira brokerage account.


Filed on 2012-07-10 by Aamoth William L SEC CIK 1236375 Form 4

Accession 0001181431-12-040276.txt Sec File: edgar/data/1236375/0001181431-12-040276-index.htm

2012-07-06 Aamoth William L (CIK 1236375) through See Footnote Below (V P - Corporate Treasurer)

Invested in Steris Corp remaining shares owned 10699

Common Shares No Par Value Steris Corp Ste

f2 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 30, 2016.


Filed on 2009-08-10 by Aamoth William L SEC CIK 1236375 Form 4

Accession 0001181431-09-038623.txt Sec File: edgar/data/1236375/0001181431-09-038623-index.htm

2009-08-06 Aamoth William L (CIK 1236375) through See Footnote Below (V P - Corporate Treasurer)

Invested in Steris Corp bought 551 shares at $27.1633 remaining shares owned 644

Common Shares No Par Value Steris Corp Ste Transaction code: P Open market or private purchase of securities

f2 this transaction represents an investment transfer by mr. aamoth in the steris corporation 401(k) plan. mr. aamoth transferred $15,000 from another fund under the plan to the steris stock fund. the amount represents 552.2153 units of the steris corporation 401(k) plan steris stock fund which equals 551 share equivalents as of august 6, 2009. mr aamoth already had 94.0943 units equal to 93 share equivalents invested in the steris stock fund prior to this transaction.


Filed on 2009-08-10 by Aamoth William L SEC CIK 1236375 Form 4

Accession 0001181431-09-038623.txt Sec File: edgar/data/1236375/0001181431-09-038623-index.htm

2009-08-06 Aamoth William L (CIK 1236375) through See Footnote Below (V P - Corporate Treasurer)

Invested in Steris Corp bought 500 shares at $27.2418 remaining shares owned 500

Common Shares No Par Value Steris Corp Ste Transaction code: P Open market or private purchase of securities

f1 this transaction represents an investment transfer by mr. aamoth in the vanguard william l. aamoth - rollover ira brokerage account. mr. aamoth purchased 500 steris common shares for $27.2418 per share.


Filed on 2009-08-10 by Aamoth William L SEC CIK 1236375 Form 4

Accession 0001181431-09-038623.txt Sec File: edgar/data/1236375/0001181431-09-038623-index.htm

2009-08-06 Aamoth William L (CIK 1236375) through See Footnote Below (V P - Corporate Treasurer)

Invested in Steris Corp remaining shares owned 7200

Common Shares No Par Value Steris Corp Ste

f3 6,500 of these common shares are restricted. the restrictions on these common shares lapse as follows: 1,400 on september 7, 2009, 1,500 on july 27, 2010, 1,600 on may 23, 2011 and 2,000 on may 21, 2012.


Filed on 2007-03-20 by Aamoth William L SEC CIK 1236375 Form 4

Accession 0001181431-07-020312.txt Sec File: edgar/data/1236375/0001181431-07-020312-index.htm

2007-03-16 Aamoth William L (CIK 1236375) through See Footnote Below (V P - Corporate Treasurer)

Invested in Steris Corp bought 249 shares at $25.3202 remaining shares owned 1432

Common Shares No Par Value Steris Corp Ste Transaction code: P Open market or private purchase of securities

f2 represents 1,479.42523 units of the steris stock fund which equals 1,432 share equivalents as of march 16, 2007.


Filed on 2007-03-20 by Aamoth William L SEC CIK 1236375 Form 4

Accession 0001181431-07-020312.txt Sec File: edgar/data/1236375/0001181431-07-020312-index.htm

2007-03-16 Aamoth William L (CIK 1236375) through See Footnote Below (V P - Corporate Treasurer)

Invested in Steris Corp bought 500 shares at $25.5699 remaining shares owned 1000

Common Shares No Par Value Steris Corp Ste Transaction code: P Open market or private purchase of securities

f1 shares held by the william l. aamoth rollover ira.


Filed on 2007-03-20 by Aamoth William L SEC CIK 1236375 Form 4

Accession 0001181431-07-020312.txt Sec File: edgar/data/1236375/0001181431-07-020312-index.htm

2007-03-16 Aamoth William L (CIK 1236375) through See Footnote Below (V P - Corporate Treasurer)

Invested in Steris Corp remaining shares owned 1400

Common Shares No Par Value Steris Corp Ste

f3 these common shares are restricted and vest on september 7, 2009.


Filed on 2006-08-08 by Aamoth William L SEC CIK 1236375 Form 4

Accession 0001181431-06-046378.txt Sec File: edgar/data/1236375/0001181431-06-046378-index.htm

2006-08-07 Aamoth William L (CIK 1236375) through See Footnote Below (V P - Corporate Treasurer)

Invested in Steris Corp bought 500 shares at $22.644 remaining shares owned 500

Common Shares No Par Value Steris Corp Ste Transaction code: P Open market or private purchase of securities

f1 shares are held by the william l. aamoth ira.


Filed on 2006-08-08 by Aamoth William L SEC CIK 1236375 Form 4

Accession 0001181431-06-046378.txt Sec File: edgar/data/1236375/0001181431-06-046378-index.htm

2006-08-07 Aamoth William L (CIK 1236375) through See Footnote Below (V P - Corporate Treasurer)

Invested in Steris Corp remaining shares owned 1067

Common Shares No Par Value Steris Corp Ste

f2 shares held by mr. aamoth in the steris 401(k) plan.


Filed on 2006-05-12 by Aamoth William L SEC CIK 1236375 Form 4

Accession 0001181431-06-029944.txt Sec File: edgar/data/1236375/0001181431-06-029944-index.htm

2006-05-11 Aamoth William L (CIK 1236375) through See Footnote Below (V P - Corporate Treasurer)

Invested in Steris Corp bought 989 shares at $22.85 remaining shares owned 989

Common Shares No Par Value Steris Corp Ste Transaction code: P Open market or private purchase of securities

f1 this transacyion represents an investment transfer by mr. aamoth in the steris corporation 401(k) plan. mr aamoth transferred $23,000 into the steris stock fund from other funds under the plan. the amount represents 1,025.38976513 units in the steris stock fund. this is the equivalent to 989.697 shares of steris stock. this transaction was effective on may 11, 2006.


Filed on 2005-06-21 by Aamoth William L SEC CIK 1236375 Form 4

Accession 0001181431-05-035843.txt Sec File: edgar/data/1236375/0001181431-05-035843-index.htm

2005-06-17 Aamoth William L (CIK 1236375) through See Footnote Below (V P - Corporate Treasurer)

Invested in Steris Corp sold 529 shares at $26.25 remaining shares owned 0

Common Shares No Par Value Steris Corp Ste Transaction code: S Open market or private sale of securities

f1 this transaction represents an investment transfer by mr. aamoth in the steris corporation 401(k) plan. mr. aamoth transferred $13,898.26 from the steris stock fund to other funds under the plan. this amount represents 549.6598 units of the steris stock fund, which translates into the equivalent of 529.4477 shares of steris stock. this transaction was effective on june 17, 2005.