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General | Insiders | Insider Transactions | Monthly Overview | Weekly Overview

Overview of all insider trading transactions in SIGMA ALDRICH CORP. Get notifications about new insider transactions in SIGMA ALDRICH CORP for free.

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Date	Ticker	Company	Owner	Relationship	Transaction	Code	Cost ($)	Shares	Transaction Value ($)	Total Shares	% Holdings
Dec 03 2009	SIAL	SIGMA ALDRICH CORP	WICKS FRANK	President, Research ...	Sell	S	54.02	300	16,205	30,383	30.7 K to 30.4 K (-0.98 %)
Dec 03 2009	SIAL	SIGMA ALDRICH CORP	WICKS FRANK	President, Research ...	Sell	S	54.01	474	25,602	30,683	31.2 K to 30.7 K (-1.52 %)
Dec 03 2009	SIAL	SIGMA ALDRICH CORP	WICKS FRANK	President, Research ...	Sell	S	54.01	3,700	199,842	31,157	34.9 K to 31.2 K (-10.61 %)
Dec 03 2009	SIAL	SIGMA ALDRICH CORP	WICKS FRANK	President, Research ...	Sell	S	54.01	1,017	54,929	34,857	35.9 K to 34.9 K (-2.83 %)
Dec 03 2009	SIAL	SIGMA ALDRICH CORP	WICKS FRANK	President, Research ...	Sell	S	54.01	1,100	59,411	35,874	37 K to 35.9 K (-2.98 %)
Dec 03 2009	SIAL	SIGMA ALDRICH CORP	WICKS FRANK	President, Research ...	Sell	S	54.01	162	8,749	36,974	37.1 K to 37 K (-0.44 %)
Dec 03 2009	SIAL	SIGMA ALDRICH CORP	WICKS FRANK	President, Research ...	Sell	S	54.01	100	5,401	37,136	37.2 K to 37.1 K (-0.27 %)
Dec 03 2009	SIAL	SIGMA ALDRICH CORP	WICKS FRANK	President, Research ...	Sell	S	54.00	7,464	403,056	37,236	44.7 K to 37.2 K (-16.70 %)
Dec 03 2009	SIAL	SIGMA ALDRICH CORP	WICKS FRANK	President, Research ...	Buy	M	25.32	22,200	561,993	44,700	22.5 K to 44.7 K (+98.67 %)
Dec 02 2009	SIAL	SIGMA ALDRICH CORP	PORWOLL JOE	VP, Milwaukee Opera ...	Gift	G	53.95	100	5,395	8,740	8.8 K to 8.7 K (-1.13 %)
Dec 02 2009	SIAL	SIGMA ALDRICH CORP	RICHTER KIRK A	Vice President & Tr ...	Gift	G	52.97	500	26,483	79,182	78.7 K to 79.2 K (+0.64 %)
Nov 17 2009	SIAL	SIGMA ALDRICH CORP	Krosley Kevin		Option Exercise	M	25.32	2,200	55,693	0
Nov 17 2009	SIAL	SIGMA ALDRICH CORP	Krosley Kevin		Option Exercise	M	25.32	2,800	70,882	0
Nov 17 2009	SIAL	SIGMA ALDRICH CORP	Krosley Kevin		Sell	S	55.65	100	5,565	270	370 to 270 (-27.03 %)
Nov 17 2009	SIAL	SIGMA ALDRICH CORP	Krosley Kevin		Sell	S	55.64	400	22,256	370	770 to 370 (-51.95 %)
Nov 17 2009	SIAL	SIGMA ALDRICH CORP	Krosley Kevin		Sell	S	55.63	1,199	66,700	770	2 K to 770 (-60.89 %)
Nov 17 2009	SIAL	SIGMA ALDRICH CORP	Krosley Kevin		Sell	S	55.62	1,700	94,554	1,969	3.7 K to 2 K (-46.33 %)
Nov 17 2009	SIAL	SIGMA ALDRICH CORP	Krosley Kevin		Sell	S	55.61	1,501	83,471	3,669	5.2 K to 3.7 K (-29.03 %)
Nov 17 2009	SIAL	SIGMA ALDRICH CORP	Krosley Kevin		Sell	S	55.61	100	5,561	5,170	5.3 K to 5.2 K (-1.90 %)
Nov 17 2009	SIAL	SIGMA ALDRICH CORP	Krosley Kevin		Buy	M	25.32	2,200	55,693	5,270	3.1 K to 5.3 K (+71.66 %)
Nov 17 2009	SIAL	SIGMA ALDRICH CORP	Krosley Kevin		Buy	M	25.32	2,800	70,882	3,070	270 to 3.1 K (+1,037.04 %)
Nov 16 2009	SIAL	SIGMA ALDRICH CORP	JULIEN DAVID	President, Supply C ...	Option Exercise	M	25.86	36,200	936,132	0
Nov 16 2009	SIAL	SIGMA ALDRICH CORP	JULIEN DAVID	President, Supply C ...	Sell	S	55.07	36,200	1,993,523	22,529	58.7 K to 22.5 K (-61.64 %)
Nov 16 2009	SIAL	SIGMA ALDRICH CORP	JULIEN DAVID	President, Supply C ...	Buy	M	25.86	36,200	936,132	58,729	22.5 K to 58.7 K (+160.68 %)
Nov 10 2009	SIAL	SIGMA ALDRICH CORP	Zihlmann Josef		Option Exercise	M	25.32	5,000	126,575	0
Nov 10 2009	SIAL	SIGMA ALDRICH CORP	Zihlmann Josef		Sell	S	55.33	700	38,731	4,540	5.2 K to 4.5 K (-13.36 %)
Nov 10 2009	SIAL	SIGMA ALDRICH CORP	Zihlmann Josef		Sell	S	55.31	1,921	106,251	5,240	7.2 K to 5.2 K (-26.83 %)
Nov 10 2009	SIAL	SIGMA ALDRICH CORP	Zihlmann Josef		Sell	S	55.30	713	39,429	7,161	7.9 K to 7.2 K (-9.06 %)
Nov 10 2009	SIAL	SIGMA ALDRICH CORP	Zihlmann Josef		Sell	S	55.29	945	52,249	7,874	8.8 K to 7.9 K (-10.72 %)
Nov 10 2009	SIAL	SIGMA ALDRICH CORP	Zihlmann Josef		Sell	S	55.28	721	39,857	8,819	9.5 K to 8.8 K (-7.56 %)
Nov 10 2009	SIAL	SIGMA ALDRICH CORP	Zihlmann Josef		Buy	M	25.32	5,000	126,575	9,540	4.5 K to 9.5 K (+110.13 %)
Nov 12 2009	SIAL	SIGMA ALDRICH CORP	HUMMEL LARRY M		Option Exercise	M	25.32	22,200	561,993	0
Nov 12 2009	SIAL	SIGMA ALDRICH CORP	HUMMEL LARRY M		Option Exercise	M	25.32	7,800	197,457	0
Nov 12 2009	SIAL	SIGMA ALDRICH CORP	HUMMEL LARRY M		Sell	S	55.21	26	1,435	8,340	8.4 K to 8.3 K (-0.31 %)
Nov 12 2009	SIAL	SIGMA ALDRICH CORP	HUMMEL LARRY M		Sell	S	55.20	100	5,520	8,366	8.5 K to 8.4 K (-1.18 %)
Nov 12 2009	SIAL	SIGMA ALDRICH CORP	HUMMEL LARRY M		Sell	S	55.19	100	5,519	8,466	8.6 K to 8.5 K (-1.17 %)
Nov 12 2009	SIAL	SIGMA ALDRICH CORP	HUMMEL LARRY M		Sell	S	55.19	563	31,072	8,566	9.1 K to 8.6 K (-6.17 %)
Nov 12 2009	SIAL	SIGMA ALDRICH CORP	HUMMEL LARRY M		Sell	S	55.18	100	5,518	9,129	9.2 K to 9.1 K (-1.08 %)
Nov 12 2009	SIAL	SIGMA ALDRICH CORP	HUMMEL LARRY M		Sell	S	55.18	200	11,036	9,229	9.4 K to 9.2 K (-2.12 %)
Nov 12 2009	SIAL	SIGMA ALDRICH CORP	HUMMEL LARRY M		Sell	S	55.18	400	22,072	9,429	9.8 K to 9.4 K (-4.07 %)
Nov 12 2009	SIAL	SIGMA ALDRICH CORP	HUMMEL LARRY M		Sell	S	55.17	800	44,137	9,829	10.6 K to 9.8 K (-7.53 %)
Nov 12 2009	SIAL	SIGMA ALDRICH CORP	HUMMEL LARRY M		Sell	S	55.17	1,369	75,528	10,629	12 K to 10.6 K (-11.41 %)
Nov 12 2009	SIAL	SIGMA ALDRICH CORP	HUMMEL LARRY M		Sell	S	55.16	100	5,516	11,998	12.1 K to 12 K (-0.83 %)
Nov 12 2009	SIAL	SIGMA ALDRICH CORP	HUMMEL LARRY M		Sell	S	55.14	5,442	300,076	12,098	17.5 K to 12.1 K (-31.03 %)
Nov 12 2009	SIAL	SIGMA ALDRICH CORP	HUMMEL LARRY M		Sell	S	55.11	5,400	297,614	17,540	22.9 K to 17.5 K (-23.54 %)
Nov 12 2009	SIAL	SIGMA ALDRICH CORP	HUMMEL LARRY M		Sell	S	55.11	100	5,511	22,940	23 K to 22.9 K (-0.43 %)
Nov 12 2009	SIAL	SIGMA ALDRICH CORP	HUMMEL LARRY M		Sell	S	55.11	7,800	429,858	23,040	30.8 K to 23 K (-25.29 %)
Nov 12 2009	SIAL	SIGMA ALDRICH CORP	HUMMEL LARRY M		Sell	S	55.10	100	5,510	30,840	30.9 K to 30.8 K (-0.32 %)
Nov 12 2009	SIAL	SIGMA ALDRICH CORP	HUMMEL LARRY M		Sell	S	55.09	100	5,509	30,940	31 K to 30.9 K (-0.32 %)
Nov 12 2009	SIAL	SIGMA ALDRICH CORP	HUMMEL LARRY M		Sell	S	55.08	200	11,016	31,040	31.2 K to 31 K (-0.64 %)
Nov 12 2009	SIAL	SIGMA ALDRICH CORP	HUMMEL LARRY M		Sell	S	55.07	1,400	77,099	31,240	32.6 K to 31.2 K (-4.29 %)
Nov 12 2009	SIAL	SIGMA ALDRICH CORP	HUMMEL LARRY M		Sell	S	55.07	2,200	121,154	32,640	34.8 K to 32.6 K (-6.31 %)
Nov 12 2009	SIAL	SIGMA ALDRICH CORP	HUMMEL LARRY M		Sell	S	55.06	800	44,049	34,840	35.6 K to 34.8 K (-2.24 %)
Nov 12 2009	SIAL	SIGMA ALDRICH CORP	HUMMEL LARRY M		Sell	S	55.06	100	5,506	35,640	35.7 K to 35.6 K (-0.28 %)
Nov 12 2009	SIAL	SIGMA ALDRICH CORP	HUMMEL LARRY M		Sell	S	55.06	1,200	66,072	35,740	36.9 K to 35.7 K (-3.25 %)
Nov 12 2009	SIAL	SIGMA ALDRICH CORP	HUMMEL LARRY M		Buy	M	25.32	22,200	561,993	36,940	14.7 K to 36.9 K (+150.61 %)
Nov 12 2009	SIAL	SIGMA ALDRICH CORP	HUMMEL LARRY M		Buy	M	25.32	7,800	197,457	14,740	6.9 K to 14.7 K (+112.39 %)
Nov 06 2009	SIAL	SIGMA ALDRICH CORP	JULIEN DAVID	President, Supply C ...	Option Exercise	M	25.32	22,200	561,993	0
Nov 06 2009	SIAL	SIGMA ALDRICH CORP	JULIEN DAVID	President, Supply C ...	Sell	S	54.54	14,000	763,528	22,529	36.5 K to 22.5 K (-38.33 %)
Nov 06 2009	SIAL	SIGMA ALDRICH CORP	JULIEN DAVID	President, Supply C ...	Sell	S	54.13	22,200	1,201,717	36,529	58.7 K to 36.5 K (-37.80 %)
Nov 06 2009	SIAL	SIGMA ALDRICH CORP	JULIEN DAVID	President, Supply C ...	Buy	M	25.32	22,200	561,993	58,729	36.5 K to 58.7 K (+60.77 %)
Oct 27 2009	SIAL	SIGMA ALDRICH CORP	JULIEN DAVID	President, Supply C ...	Option Exercise	M	25.32	20,000	506,300	22,200
Oct 27 2009	SIAL	SIGMA ALDRICH CORP	JULIEN DAVID	President, Supply C ...	Sell	S	54.09	20,000	1,081,872	36,529	56.5 K to 36.5 K (-35.38 %)
Oct 27 2009	SIAL	SIGMA ALDRICH CORP	JULIEN DAVID	President, Supply C ...	Buy	M	25.32	20,000	506,300	56,529	36.5 K to 56.5 K (+54.75 %)
Oct 05 2009	SIAL	SIGMA ALDRICH CORP	CHURCH GEORGE	Director	Option Exercise	A	51.96	20,000	1,039,200	20,000
Oct 02 2009	SIAL	SIGMA ALDRICH CORP	MILLER GEORGE LLOYD	Sr. VP, General Cou ...	Option Exercise	A	53.98	5,514	297,646	5,514
Oct 02 2009	SIAL	SIGMA ALDRICH CORP	MILLER GEORGE LLOYD	Sr. VP, General Cou ...	Option Exercise	A	53.98	5,556	299,913	5,556
Oct 02 2009	SIAL	SIGMA ALDRICH CORP	MILLER GEORGE LLOYD	Sr. VP, General Cou ...	Grant	A	0.00	2,779	0	2,779	0 to 2.8 K
Sep 04 2009	SIAL	SIGMA ALDRICH CORP	Green Eric Mark		Option Exercise	M	25.86	5,000	129,300	5,000
Sep 04 2009	SIAL	SIGMA ALDRICH CORP	Green Eric Mark		Sell	S	49.85	100	4,985	2,940	3 K to 2.9 K (-3.29 %)
Sep 04 2009	SIAL	SIGMA ALDRICH CORP	Green Eric Mark		Sell	S	49.85	100	4,985	3,040	3.1 K to 3 K (-3.18 %)
Sep 04 2009	SIAL	SIGMA ALDRICH CORP	Green Eric Mark		Sell	S	49.85	200	9,970	3,140	3.3 K to 3.1 K (-5.99 %)
Sep 04 2009	SIAL	SIGMA ALDRICH CORP	Green Eric Mark		Sell	S	49.85	1,400	69,790	3,340	4.7 K to 3.3 K (-29.54 %)
Sep 04 2009	SIAL	SIGMA ALDRICH CORP	Green Eric Mark		Sell	S	49.84	3,200	159,494	4,740	7.9 K to 4.7 K (-40.30 %)
Sep 04 2009	SIAL	SIGMA ALDRICH CORP	Green Eric Mark		Buy	M	25.86	5,000	129,300	7,940	2.9 K to 7.9 K (+170.07 %)
Sep 01 2009	SIAL	SIGMA ALDRICH CORP	MILLER KAREN J	VP, Strategy & Corp ...	Option Exercise	M	25.32	7,800	197,457	0
Sep 01 2009	SIAL	SIGMA ALDRICH CORP	MILLER KAREN J	VP, Strategy & Corp ...	Buy	M	25.32	7,800	197,457	21,740	13.9 K to 21.7 K (+55.95 %)
Aug 27 2009	SIAL	SIGMA ALDRICH CORP	MILLER KAREN J	VP, Strategy & Corp ...	Option Exercise	M	25.32	20,189	511,085	0
Aug 27 2009	SIAL	SIGMA ALDRICH CORP	MILLER KAREN J	VP, Strategy & Corp ...	Option Exercise	M	25.32	2,011	50,908	20,189
Aug 27 2009	SIAL	SIGMA ALDRICH CORP	MILLER KAREN J	VP, Strategy & Corp ...	Sell	S	51.46	20,189	1,038,982	13,940	34.1 K to 13.9 K (-59.15 %)
Aug 27 2009	SIAL	SIGMA ALDRICH CORP	MILLER KAREN J	VP, Strategy & Corp ...	Buy	M	25.32	20,189	511,085	34,129	13.9 K to 34.1 K (+144.83 %)
Aug 27 2009	SIAL	SIGMA ALDRICH CORP	MILLER KAREN J	VP, Strategy & Corp ...	Sell	S	52.04	2,011	104,642	13,940	16 K to 13.9 K (-12.61 %)
Aug 27 2009	SIAL	SIGMA ALDRICH CORP	MILLER KAREN J	VP, Strategy & Corp ...	Buy	M	25.32	2,011	50,908	15,951	13.9 K to 16 K (+14.43 %)
Aug 21 2009	SIAL	SIGMA ALDRICH CORP	SEAR TIMOTHY R G		Option Exercise	M	34.50	10,000	344,950	0
Aug 21 2009	SIAL	SIGMA ALDRICH CORP	SEAR TIMOTHY R G		Option Exercise	M	29.72	20,000	594,400	0
Aug 21 2009	SIAL	SIGMA ALDRICH CORP	SEAR TIMOTHY R G		Buy	M	34.50	10,000	344,950	40,800	30.8 K to 40.8 K (+32.47 %)
Aug 21 2009	SIAL	SIGMA ALDRICH CORP	SEAR TIMOTHY R G		Buy	M	29.72	20,000	594,400	30,800	10.8 K to 30.8 K (+185.19 %)
Aug 25 2009	SIAL	SIGMA ALDRICH CORP	WICKS FRANK	President, Research ...	Gift	G	52.22	485	25,327	22,500	23 K to 22.5 K (-2.11 %)
Aug 13 2009	SIAL	SIGMA ALDRICH CORP	WICKS FRANK	President, SAFC	Option Exercise	M	25.32	20,000	506,300	22,200
Aug 13 2009	SIAL	SIGMA ALDRICH CORP	WICKS FRANK	President, SAFC	Sell	S	52.56	200	10,512	22,985	23.2 K to 23 K (-0.86 %)
Aug 13 2009	SIAL	SIGMA ALDRICH CORP	WICKS FRANK	President, SAFC	Sell	S	52.55	200	10,510	23,185	23.4 K to 23.2 K (-0.86 %)
Aug 13 2009	SIAL	SIGMA ALDRICH CORP	WICKS FRANK	President, SAFC	Sell	S	52.54	186	9,772	23,385	23.6 K to 23.4 K (-0.79 %)
Aug 13 2009	SIAL	SIGMA ALDRICH CORP	WICKS FRANK	President, SAFC	Sell	S	52.53	491	25,792	23,571	24.1 K to 23.6 K (-2.04 %)
Aug 13 2009	SIAL	SIGMA ALDRICH CORP	WICKS FRANK	President, SAFC	Sell	S	52.53	309	16,231	24,062	24.4 K to 24.1 K (-1.27 %)
Aug 13 2009	SIAL	SIGMA ALDRICH CORP	WICKS FRANK	President, SAFC	Sell	S	52.52	1,147	60,240	24,371	25.5 K to 24.4 K (-4.49 %)
Aug 13 2009	SIAL	SIGMA ALDRICH CORP	WICKS FRANK	President, SAFC	Sell	S	52.51	729	38,280	25,518	26.2 K to 25.5 K (-2.78 %)
Aug 13 2009	SIAL	SIGMA ALDRICH CORP	WICKS FRANK	President, SAFC	Sell	S	52.50	953	50,034	26,247	27.2 K to 26.2 K (-3.50 %)
Aug 13 2009	SIAL	SIGMA ALDRICH CORP	WICKS FRANK	President, SAFC	Sell	S	52.50	400	21,000	27,200	27.6 K to 27.2 K (-1.45 %)
Aug 13 2009	SIAL	SIGMA ALDRICH CORP	WICKS FRANK	President, SAFC	Sell	S	52.49	1,056	55,429	27,600	28.7 K to 27.6 K (-3.69 %)
Aug 13 2009	SIAL	SIGMA ALDRICH CORP	WICKS FRANK	President, SAFC	Sell	S	52.48	2,200	115,456	28,656	30.9 K to 28.7 K (-7.13 %)
Aug 13 2009	SIAL	SIGMA ALDRICH CORP	WICKS FRANK	President, SAFC	Sell	S	52.47	982	51,530	30,856	31.8 K to 30.9 K (-3.08 %)
Aug 13 2009	SIAL	SIGMA ALDRICH CORP	WICKS FRANK	President, SAFC	Sell	S	52.47	2,068	108,508	31,838	33.9 K to 31.8 K (-6.10 %)
Aug 13 2009	SIAL	SIGMA ALDRICH CORP	WICKS FRANK	President, SAFC	Sell	S	52.47	251	13,170	33,906	34.2 K to 33.9 K (-0.73 %)
Aug 13 2009	SIAL	SIGMA ALDRICH CORP	WICKS FRANK	President, SAFC	Sell	S	52.46	1,200	62,952	34,157	35.4 K to 34.2 K (-3.39 %)
Aug 13 2009	SIAL	SIGMA ALDRICH CORP	WICKS FRANK	President, SAFC	Sell	S	52.46	300	15,737	35,357	35.7 K to 35.4 K (-0.84 %)
Aug 13 2009	SIAL	SIGMA ALDRICH CORP	WICKS FRANK	President, SAFC	Sell	S	52.45	68	3,566	35,657	35.7 K to 35.7 K (-0.19 %)
Aug 13 2009	SIAL	SIGMA ALDRICH CORP	WICKS FRANK	President, SAFC	Sell	S	52.44	400	20,976	35,725	36.1 K to 35.7 K (-1.11 %)
Aug 13 2009	SIAL	SIGMA ALDRICH CORP	WICKS FRANK	President, SAFC	Sell	S	52.43	400	20,972	36,125	36.5 K to 36.1 K (-1.10 %)
Aug 13 2009	SIAL	SIGMA ALDRICH CORP	WICKS FRANK	President, SAFC	Sell	S	52.42	1,000	52,420	36,525	37.5 K to 36.5 K (-2.66 %)
Aug 13 2009	SIAL	SIGMA ALDRICH CORP	WICKS FRANK	President, SAFC	Sell	S	52.39	2,303	120,654	37,525	39.8 K to 37.5 K (-5.78 %)
Aug 13 2009	SIAL	SIGMA ALDRICH CORP	WICKS FRANK	President, SAFC	Sell	S	52.39	700	36,672	39,828	40.5 K to 39.8 K (-1.73 %)
Aug 13 2009	SIAL	SIGMA ALDRICH CORP	WICKS FRANK	President, SAFC	Sell	S	52.38	1,700	89,046	40,528	42.2 K to 40.5 K (-4.03 %)
Aug 13 2009	SIAL	SIGMA ALDRICH CORP	WICKS FRANK	President, SAFC	Sell	S	52.37	757	39,644	42,228	43 K to 42.2 K (-1.76 %)
Aug 13 2009	SIAL	SIGMA ALDRICH CORP	WICKS FRANK	President, SAFC	Buy	M	25.32	20,000	506,300	42,985	23 K to 43 K (+87.01 %)
Aug 10 2009	SIAL	SIGMA ALDRICH CORP	JULIEN DAVID	President, Supply C ...	Option Exercise	M	18.25	7,747	141,383	6,853
Aug 10 2009	SIAL	SIGMA ALDRICH CORP	JULIEN DAVID	President, Supply C ...	Sell	S	52.51	120	6,301	36,529	36.6 K to 36.5 K (-0.33 %)
Aug 10 2009	SIAL	SIGMA ALDRICH CORP	JULIEN DAVID	President, Supply C ...	Sell	S	52.51	267	14,020	36,649	36.9 K to 36.6 K (-0.72 %)
Aug 10 2009	SIAL	SIGMA ALDRICH CORP	JULIEN DAVID	President, Supply C ...	Sell	S	52.51	954	50,090	36,916	37.9 K to 36.9 K (-2.52 %)
Aug 10 2009	SIAL	SIGMA ALDRICH CORP	JULIEN DAVID	President, Supply C ...	Sell	S	52.50	535	28,089	37,870	38.4 K to 37.9 K (-1.39 %)
Aug 10 2009	SIAL	SIGMA ALDRICH CORP	JULIEN DAVID	President, Supply C ...	Sell	S	52.50	1,393	73,136	38,405	39.8 K to 38.4 K (-3.50 %)
Aug 10 2009	SIAL	SIGMA ALDRICH CORP	JULIEN DAVID	President, Supply C ...	Sell	S	52.50	109	5,723	39,798	39.9 K to 39.8 K (-0.27 %)
Aug 10 2009	SIAL	SIGMA ALDRICH CORP	JULIEN DAVID	President, Supply C ...	Sell	S	52.50	4,369	229,373	39,907	44.3 K to 39.9 K (-9.87 %)
Aug 10 2009	SIAL	SIGMA ALDRICH CORP	JULIEN DAVID	President, Supply C ...	Buy	M	18.25	7,747	141,383	44,276	36.5 K to 44.3 K (+21.21 %)
Aug 13 2009	SIAL	SIGMA ALDRICH CORP	JULIEN DAVID	President, Supply C ...	Option Exercise	M	18.25	6,853	125,067	0
Aug 13 2009	SIAL	SIGMA ALDRICH CORP	JULIEN DAVID	President, Supply C ...	Sell	S	52.58	100	5,258	36,529	36.6 K to 36.5 K (-0.27 %)
Aug 13 2009	SIAL	SIGMA ALDRICH CORP	JULIEN DAVID	President, Supply C ...	Sell	S	52.57	100	5,257	36,629	36.7 K to 36.6 K (-0.27 %)
Aug 13 2009	SIAL	SIGMA ALDRICH CORP	JULIEN DAVID	President, Supply C ...	Sell	S	52.55	121	6,359	36,729	36.9 K to 36.7 K (-0.33 %)
Aug 13 2009	SIAL	SIGMA ALDRICH CORP	JULIEN DAVID	President, Supply C ...	Sell	S	52.55	800	42,042	36,850	37.7 K to 36.9 K (-2.12 %)
Aug 13 2009	SIAL	SIGMA ALDRICH CORP	JULIEN DAVID	President, Supply C ...	Sell	S	52.55	143	7,515	37,650	37.8 K to 37.7 K (-0.38 %)
Aug 13 2009	SIAL	SIGMA ALDRICH CORP	JULIEN DAVID	President, Supply C ...	Sell	S	52.55	305	16,028	37,793	38.1 K to 37.8 K (-0.80 %)
Aug 13 2009	SIAL	SIGMA ALDRICH CORP	JULIEN DAVID	President, Supply C ...	Sell	S	52.53	203	10,664	38,098	38.3 K to 38.1 K (-0.53 %)
Aug 13 2009	SIAL	SIGMA ALDRICH CORP	JULIEN DAVID	President, Supply C ...	Sell	S	52.52	500	26,261	38,301	38.8 K to 38.3 K (-1.29 %)
Aug 13 2009	SIAL	SIGMA ALDRICH CORP	JULIEN DAVID	President, Supply C ...	Sell	S	52.52	300	15,756	38,801	39.1 K to 38.8 K (-0.77 %)
Aug 13 2009	SIAL	SIGMA ALDRICH CORP	JULIEN DAVID	President, Supply C ...	Sell	S	52.51	597	31,351	39,101	39.7 K to 39.1 K (-1.50 %)
Aug 13 2009	SIAL	SIGMA ALDRICH CORP	JULIEN DAVID	President, Supply C ...	Sell	S	52.51	2,992	157,112	39,698	42.7 K to 39.7 K (-7.01 %)
Aug 13 2009	SIAL	SIGMA ALDRICH CORP	JULIEN DAVID	President, Supply C ...	Sell	S	52.51	277	14,545	42,690	43 K to 42.7 K (-0.64 %)
Aug 13 2009	SIAL	SIGMA ALDRICH CORP	JULIEN DAVID	President, Supply C ...	Sell	S	52.50	415	21,788	42,967	43.4 K to 43 K (-0.96 %)
Aug 13 2009	SIAL	SIGMA ALDRICH CORP	JULIEN DAVID	President, Supply C ...	Buy	M	18.25	6,853	125,067	43,382	36.5 K to 43.4 K (+18.76 %)
Aug 06 2009	SIAL	SIGMA ALDRICH CORP	MILLER KAREN J	VP Strategy & Corp ...	Sell	S	52.42	9,091	476,517	13,940	23 K to 13.9 K (-39.47 %)
Aug 06 2009	SIAL	SIGMA ALDRICH CORP	HARVEY DAVID R	Director	Sell	S	51.86	5,000	259,318	43,480	48.5 K to 43.5 K (-10.31 %)
Jun 03 2009	SIAL	SIGMA ALDRICH CORP	RICHTER KIRK A	Treasurer	Gift	G	49.88	500	24,938	79,682	80.2 K to 79.7 K (-0.62 %)
May 29 2009	SIAL	SIGMA ALDRICH CORP	NAGARKATTI JAI	President & CEO	Sell	S	47.66	100	4,766	79,181	79.3 K to 79.2 K (-0.13 %)
May 29 2009	SIAL	SIGMA ALDRICH CORP	NAGARKATTI JAI	President & CEO	Sell	S	47.65	270	12,866	79,281	79.6 K to 79.3 K (-0.34 %)
May 29 2009	SIAL	SIGMA ALDRICH CORP	NAGARKATTI JAI	President & CEO	Sell	S	47.63	1,730	82,400	79,551	81.3 K to 79.6 K (-2.13 %)
Jun 02 2009	SIAL	SIGMA ALDRICH CORP	COTTIER GILLES	President, SAFC	Sell	S	49.15	700	34,402	15,569	16.3 K to 15.6 K (-4.30 %)
May 27 2009	SIAL	SIGMA ALDRICH CORP	MILLER KAREN J	Controller	Option Exercise	M	18.25	7,400	135,050	0
May 27 2009	SIAL	SIGMA ALDRICH CORP	MILLER KAREN J	Controller	Payment of Exercise	F	46.42	2,909	135,036	23,031	25.9 K to 23 K (-11.21 %)
May 27 2009	SIAL	SIGMA ALDRICH CORP	MILLER KAREN J	Controller	Buy	M	18.25	7,400	135,050	25,940	18.5 K to 25.9 K (+39.91 %)
May 21 2009	SIAL	SIGMA ALDRICH CORP	Krosley Kevin		Option Exercise	M	25.32	5,000	126,575	2,800
May 21 2009	SIAL	SIGMA ALDRICH CORP	Krosley Kevin		Sell	S	46.68	300	14,004	270	570 to 270 (-52.63 %)

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