Sec Form 4 Filing - SEIFERT JAMES J @ BEMIS CO INC - 2010-01-01

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 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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1. Name and Address of Reporting Person SEIFERT JAMES J 2. Issuer Name and Ticker or Trading Symbol BEMIS CO INC [ BMS] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) General Counsel (Last) (First) (Middle) ONE NEENAH CENTER, 4TH FLOOR, P.O. BOX 669 3. Date of Earliest Transaction (MM/DD/YY) 01/01/2010 (Street) NEENAH, WI54957 4. If Amendment, Date Original Filed (MM/DD/YY) 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 (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 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 Stock 01/04/2010 M 12,943 ( 4 ) A $ 30.01 32,838 D Common Stock 03/31/2009 J 153 A 1,230 I 401(k) Plan Common Stock 06/30/2009 J 125 A 1,355 I 401(k) Plan Common Stock 09/30/2009 J 38 A 1,393 I 401(k) Plan Common Stock 12/31/2009 J 11 A 1,404 I 401(k) Plan

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 (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 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 (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Pri ce 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 Common Stock ( 2 ) 01/01/2005 01/04/2010 M 20,000 12/31/2009( 4 ) 12/31/2009 Common Stock 20,000 ( 3 ) 0 D Common Stock ( 2 ) 01/02/2006 A 21,000 12/31/2010( 5 ) 12/31/2010 Common Stock 21,000 ( 3 ) 21,000 D Common Stock ( 2 ) 01/03/2007 A 22,000 12/31/2011( 6 ) 12/31/2011 Common Stock 22,000 ( 3 ) 22,000 D Common Stock ( 2 ) 01/02/2008 A 23,000 12/31/2012( 7 ) 12/31/2012 Common Stock 23,000 ( 3 ) 23,000 D Common Stock ( 2 ) 01/13/2009 A 9,837 12/31/2011( 8 ) 12/31/2011 Common Stock 9,837 ( 3 ) 9,837 D Common Stock ( 2 ) 01/13/2009 A 11,738 12/31/2013( 9 ) 12/31/2013 Common Stock 11,738 ( 3 ) 11,738 D Common Stock ( 2 ) 01/01/2010 A 12,280 12/31/2012( 10 ) 12/31/2012 Common Stock 12,280 ( 3 ) 12,280 D Common Stock ( 2 ) 01/01/2010 A 12,280 12/31/2014( 11 ) 12/31/2014 Common Stock 12,280 ( 3 ) 12,280 D Common Stock $ 23.855 07/06/2002 A 8,350 ( 12 ) 07/05/2012 Common Stock 8,350 ( 13 ) 8,350 D Common Stock $ 24.815 01/02/2003 A 11,038 ( 12 ) 12/31/2012 Common Stock 11,038 ( 13 ) 11,038 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other SEIFERT JAMES J ONE NEENAH CENTER, 4TH FLOOR P.O. BOX 669 NEENAH, WI54957 General Counsel Signatures James J. Seifert 01/05/2010 Signature of Reporting Person Date

Explanation of Responses:

( 1 )No price necessary for Edgar Filing - Company 401(k) Plan. ( 2 )Security converts to Common Stock on a one-for-one basis on date of conversion. ( 3 )Will know price on the date of conversion. ( 4 )Award under Bemis Time Accelerated Restricted Stock Appreciation Program (TARSAP) exempt under Rule 16b-3: Grant to Reporting Person of right to receive stock as of December 31, 2009. Payout was made on January 4, 2010 with 7,057 shares withheld for tax purposes, leaving right to receive 12,943 shares. ( 5 )Award under Bemis Time Accelerated Restricted Stock Appreciation Program (TARSAP) exempt under Rule 16b-3: Grant to Reporting Person of right to receive stock as of December 31, 2010. ( 6 )Award under Bemis Time Accelerated Restricted Stock Appreciation Program (TARSAP) exempt under Rule 16b-3: Grant to Reporting Person of right to receive stock as of December 31, 2011. ( 7 )Award under Bemis Time Accelerated Restricted Stock Appreciation Program (TARSAP) exempt under Rule 16b-3: Grant to Reporting Person of right to receive stock as of December 31, 2012. ( 8 )Award under Bemis Performance Based Restricted Stock Award Program exempt under Rule 16b-3: Grant to Reporting Person of right to receive Performance Stock Units as of December 31, 2011, if certain performance targets are met by the Company. ( 9 )Award under Bemis Restricted Stock Award Program exempt under Rule 16b-3: Grant to Reporting Person of right to receive Restricted Stock Units as of December 31, 2013. ( 10 )Award under Bemis Performance Based Restricted Stock Award Program exempt under Rule 16b-3: Grant to Reporting Person of right to receive Performance Stock Units as of December 31, 2012, if certain performance targets are met by the Company. ( 11 )Award under Bemis Restricted Stock Award Program exempt under Rule 16b-3: Grant to Reporting Person of right to receive Restricted Stock Units as of December 31, 2014. ( 12 )Stock Option (right to buy) pursuant to Stock Option Plan exempt under Rule 16b-3: Options presently exercisable. ( 13 )Will know price on the date of exercise.

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).

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