Insider Trades - HUMMEL LARRY M

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HUMMEL LARRY M: Declared Holdings
Company/Relationship	Reported	Shares	Ownership
Sigma-Aldrich Corporation Other NasdaqGS:SIAL (historical quotes, profile, SEC, other insiders)	11-Nov-09	8,340	Direct

Insider & restricted shareholder transactions reported over the last two years
Date Shares Stock Transaction
11-Nov-09 30,000 SIAL Option Exercise at $25.32 per share.
(Cost of $759,600)
11-Nov-09 28,600 SIAL Sale at $55.06 - $55.21 per share.
(Proceeds of about $1,577,000)
18-Feb-09 540 SIAL Acquisition (Non Open Market) at $37.56 per share.
(Value of $20,282)
30-Jul-08 5,514 SIAL Sale at $60.90 - $60.98 per share.
(Proceeds of about $336,000)
17-Jan-08 1,000 SIAL Disposition (Non Open Market) at $0 per share.

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Insider & restricted shareholder transactions reported over the last two years
Date	Shares	Stock	Transaction
11-Nov-09	30,000	SIAL	Option Exercise at $25.32 per share. (Cost of $759,600)
11-Nov-09	28,600	SIAL	Sale at $55.06 - $55.21 per share. (Proceeds of about $1,577,000)
18-Feb-09	540	SIAL	Acquisition (Non Open Market) at $37.56 per share. (Value of $20,282)
30-Jul-08	5,514	SIAL	Sale at $60.90 - $60.98 per share. (Proceeds of about $336,000)
17-Jan-08	1,000	SIAL	Disposition (Non Open Market) at $0 per share.