Sec Form 4 Filing - WICKS FRANK @ SIGMA ALDRICH CORP - 2012-02-13

Insider filing report for Changes in Beneficial Ownership
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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
WICKS FRANK
2. Issuer Name and Ticker or Trading Symbol
SIGMA ALDRICH CORP [ SIAL]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
X __ Officer (give title below) _____ Other (specify below)
President, Research
(Last) (First) (Middle)
3050 SPRUCE STREET
3. Date of Earliest Transaction (MM/DD/YY)
02/13/2012
(Street)
ST. LOUIS, MO63103
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 02/13/2012 A 3,280 A $ 0 26,480 D
Common Stock 02/15/2012 M 20,000 A $ 28.825 46,480 D
Common Stock 02/15/2012 S 20,000 D $ 70.8477 26,480 D
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. Price 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 Ex ercisable Expiration Date Title Amount or Number of Shares
ISO Stock Option Right To Buy $ 70.32 02/14/2012 A 1,422 02/14/2013( 1 ) 02/14/2022 Common Stock 1,422 $ 70.32 1,422 D
NQ Stock Option, Right To Buy $ 70.32 02/14/2012 A 20,078 02/14/2013( 1 ) 02/14/2022 Common Stock 20,078 $ 70.32 20,078 D
NQ Stock Option Right To Buy $ 28.825 02/15/2012 M 20,000 07/08/2006( 2 ) 07/08/2015 Common Stock 20,000 $ 0 0 D
Reporting Owners
Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
WICKS FRANK
3050 SPRUCE STREET
ST. LOUIS, MO63103
President, Research
Signatures
Kim Reno, Attorney in Fact 02/15/2012
Signature of Reporting Person Date
Explanation of Responses:
( 1 )These options vest one-third per year begining 2/14/2013.
( 2 )The options vested in three equal installments on July 8, 2006, 2007 and 2008.

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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