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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
Feb 28 2008	SIAL	SIGMA ALDRICH CORP	METEER JAMES W		Sell	M	56.02	50,800	2,845,603	5,792	56.6 K to 5.8 K (-89.77 %)
Feb 28 2008	SIAL	SIGMA ALDRICH CORP	METEER JAMES W		Buy	M	28.83	5,000	144,125	56,592	51.6 K to 56.6 K (+9.69 %)
Feb 28 2008	SIAL	SIGMA ALDRICH CORP	METEER JAMES W		Buy	M	28.66	15,000	429,900	51,592	36.6 K to 51.6 K (+40.99 %)
Feb 28 2008	SIAL	SIGMA ALDRICH CORP	METEER JAMES W		Buy	M	25.86	15,000	387,900	36,592	21.6 K to 36.6 K (+69.47 %)
Feb 28 2008	SIAL	SIGMA ALDRICH CORP	METEER JAMES W		Buy	M	25.32	11,000	278,465	21,592	10.6 K to 21.6 K (+103.85 %)
Feb 28 2008	SIAL	SIGMA ALDRICH CORP	METEER JAMES W		Buy	M	18.25	4,800	87,600	10,592	5.8 K to 10.6 K (+82.87 %)
Feb 27 2008	SIAL	SIGMA ALDRICH CORP	Feldker David P		Option Exercise	M	28.66	2,500	71,650	1,000
Feb 27 2008	SIAL	SIGMA ALDRICH CORP	Feldker David P		Option Exercise	M	25.86	2,200	56,892	0
Feb 27 2008	SIAL	SIGMA ALDRICH CORP	Feldker David P		Sell	M	57.17	2,500	142,936	2,930	5.4 K to 2.9 K (-46.04 %)
Feb 27 2008	SIAL	SIGMA ALDRICH CORP	Feldker David P		Sell	M	57.17	2,200	125,784	5,430	7.6 K to 5.4 K (-28.83 %)
Feb 27 2008	SIAL	SIGMA ALDRICH CORP	Feldker David P		Buy	M	28.66	2,500	71,650	7,630	5.1 K to 7.6 K (+48.73 %)
Feb 27 2008	SIAL	SIGMA ALDRICH CORP	Feldker David P		Buy	M	25.86	2,200	56,892	5,130	2.9 K to 5.1 K (+75.09 %)
Feb 26 2008	SIAL	SIGMA ALDRICH CORP	PORWOLL JOE		Option Exercise	M	13.44	3,700	49,719	0
Feb 26 2008	SIAL	SIGMA ALDRICH CORP	PORWOLL JOE		Sell	M	56.39	3,700	208,644	8,500	12.2 K to 8.5 K (-30.33 %)
Feb 26 2008	SIAL	SIGMA ALDRICH CORP	PORWOLL JOE		Buy	M	13.44	3,700	49,719	12,200	8.5 K to 12.2 K (+43.53 %)
Feb 26 2008	SIAL	SIGMA ALDRICH CORP	MILLER KAREN J	Controller	Option Exercise	M	13.44	12,000	161,250	0
Feb 26 2008	SIAL	SIGMA ALDRICH CORP	MILLER KAREN J	Controller	Buy	M	13.44	12,000	161,250	12,000	0 to 12 K
Feb 26 2008	SIAL	SIGMA ALDRICH CORP	Zihlmann Josef		Option Exercise	M	25.86	7,500	193,950	0
Feb 26 2008	SIAL	SIGMA ALDRICH CORP	Zihlmann Josef		Sell	M	55.66	7,500	417,450	4,000	11.5 K to 4 K (-65.22 %)
Feb 26 2008	SIAL	SIGMA ALDRICH CORP	Zihlmann Josef		Buy	M	25.86	7,500	193,950	11,500	4 K to 11.5 K (+187.50 %)
Feb 26 2008	SIAL	SIGMA ALDRICH CORP	NAGARKATTI JAI	President & CEO	Gift	G	54.77	1,015	55,586	68,305	69.3 K to 68.3 K (-1.46 %)
Feb 21 2008	SIAL	SIGMA ALDRICH CORP	Leese Albert Barry		Option Exercise	A	52.76	5,900	311,284	5,900
Feb 20 2008	SIAL	SIGMA ALDRICH CORP	HARVEY DAVID R		Option Exercise	M	28.98	30,000	869,400	40,000
Feb 20 2008	SIAL	SIGMA ALDRICH CORP	HARVEY DAVID R		Option Exercise	M	28.98	10,000	289,800	70,000
Feb 20 2008	SIAL	SIGMA ALDRICH CORP	HARVEY DAVID R		Sell	M	54.27	30,000	1,628,100	56,530	86.5 K to 56.5 K (-34.67 %)
Feb 20 2008	SIAL	SIGMA ALDRICH CORP	HARVEY DAVID R		Buy	M	28.98	30,000	869,400	86,530	56.5 K to 86.5 K (+53.07 %)
Feb 20 2008	SIAL	SIGMA ALDRICH CORP	HARVEY DAVID R		Sell	M	54.25	10,000	542,500	56,530	66.5 K to 56.5 K (-15.03 %)
Feb 20 2008	SIAL	SIGMA ALDRICH CORP	HARVEY DAVID R		Buy	M	28.98	10,000	289,800	66,530	56.5 K to 66.5 K (+17.69 %)
Feb 20 2008	SIAL	SIGMA ALDRICH CORP	HOGAN MICHAEL R	CAO & CFO	Option Exercise	M	14.63	50,000	731,250	16,000
Feb 20 2008	SIAL	SIGMA ALDRICH CORP	HOGAN MICHAEL R	CAO & CFO	Sell	M	54.14	50,000	2,707,045	37,470	87.5 K to 37.5 K (-57.16 %)
Feb 20 2008	SIAL	SIGMA ALDRICH CORP	HOGAN MICHAEL R	CAO & CFO	Buy	M	14.63	50,000	731,250	87,470	37.5 K to 87.5 K (+133.44 %)
Feb 20 2008	SIAL	SIGMA ALDRICH CORP	MILLER KAREN J	Controller	Sell	S	53.89	19,260	1,037,921	0	19.3 K to 0 (-100.00 %)
Feb 19 2008	SIAL	SIGMA ALDRICH CORP	Green Eric Mark		Option Exercise	A	52.76	6,550	345,578	6,550
Feb 19 2008	SIAL	SIGMA ALDRICH CORP	Green Eric Mark		Option Exercise	A	52.76	1,850	97,606	1,850
Feb 19 2008	SIAL	SIGMA ALDRICH CORP	Krosley Kevin		Option Exercise	A	52.76	6,550	345,578	6,550
Feb 19 2008	SIAL	SIGMA ALDRICH CORP	Krosley Kevin		Option Exercise	A	52.76	1,850	97,606	1,850
Feb 19 2008	SIAL	SIGMA ALDRICH CORP	Feldker David P		Option Exercise	A	52.76	6,550	345,578	6,550
Feb 19 2008	SIAL	SIGMA ALDRICH CORP	Feldker David P		Option Exercise	A	52.76	1,850	97,606	1,850
Feb 19 2008	SIAL	SIGMA ALDRICH CORP	METEER JAMES W		Option Exercise	A	52.76	4,050	213,678	4,050
Feb 19 2008	SIAL	SIGMA ALDRICH CORP	METEER JAMES W		Option Exercise	A	52.76	1,850	97,606	1,850
Feb 19 2008	SIAL	SIGMA ALDRICH CORP	Zihlmann Josef		Option Exercise	A	52.76	4,050	213,678	4,050
Feb 19 2008	SIAL	SIGMA ALDRICH CORP	Zihlmann Josef		Option Exercise	A	52.76	1,850	97,606	1,850
Feb 19 2008	SIAL	SIGMA ALDRICH CORP	PORWOLL JOE		Option Exercise	A	52.76	4,050	213,678	4,050
Feb 19 2008	SIAL	SIGMA ALDRICH CORP	PORWOLL JOE		Option Exercise	A	52.76	1,850	97,606	1,850
Feb 19 2008	SIAL	SIGMA ALDRICH CORP	KELLEY RODNEY		Option Exercise	A	52.76	4,050	213,678	4,050
Feb 19 2008	SIAL	SIGMA ALDRICH CORP	KELLEY RODNEY		Option Exercise	A	52.76	1,850	97,606	1,850
Feb 19 2008	SIAL	SIGMA ALDRICH CORP	HUMMEL LARRY M		Option Exercise	A	52.76	4,050	213,678	4,050
Feb 19 2008	SIAL	SIGMA ALDRICH CORP	HUMMEL LARRY M		Option Exercise	A	52.76	1,850	97,606	1,850
Feb 19 2008	SIAL	SIGMA ALDRICH CORP	VUILLEUMYER HERBERT		Option Exercise	A	52.76	5,900	311,284	5,900
Feb 19 2008	SIAL	SIGMA ALDRICH CORP	Walton Steve	VP, Safety & Compli ...	Option Exercise	A	52.76	7,150	377,234	7,150
Feb 19 2008	SIAL	SIGMA ALDRICH CORP	Walton Steve	VP, Safety & Compli ...	Option Exercise	A	52.76	1,850	97,606	1,850
Feb 19 2008	SIAL	SIGMA ALDRICH CORP	RICHTER KIRK A	Treasurer	Option Exercise	A	52.76	4,650	245,334	4,650
Feb 19 2008	SIAL	SIGMA ALDRICH CORP	RICHTER KIRK A	Treasurer	Option Exercise	A	52.76	1,850	97,606	1,850
Feb 19 2008	SIAL	SIGMA ALDRICH CORP	Rau Douglas	VP, Human Resources	Option Exercise	A	52.76	4,650	245,334	4,650
Feb 19 2008	SIAL	SIGMA ALDRICH CORP	Rau Douglas	VP, Human Resources	Option Exercise	A	52.76	1,850	97,606	1,850
Feb 19 2008	SIAL	SIGMA ALDRICH CORP	Turza Carl S	CIO	Option Exercise	A	52.76	4,650	245,334	4,650
Feb 19 2008	SIAL	SIGMA ALDRICH CORP	Turza Carl S	CIO	Option Exercise	A	52.76	1,850	97,606	1,850
Feb 19 2008	SIAL	SIGMA ALDRICH CORP	MILLER KAREN J	Controller	Option Exercise	A	52.76	7,150	377,234	7,150
Feb 19 2008	SIAL	SIGMA ALDRICH CORP	MILLER KAREN J	Controller	Option Exercise	A	52.76	1,850	97,606	1,850
Feb 19 2008	SIAL	SIGMA ALDRICH CORP	VAN DEN DOOL GERRIT		Option Exercise	A	52.76	950	50,122	950
Feb 19 2008	SIAL	SIGMA ALDRICH CORP	VAN DEN DOOL GERRIT		Option Exercise	A	52.76	5,550	292,818	5,550
Feb 19 2008	SIAL	SIGMA ALDRICH CORP	Keffer Richard A	General Counsel & S ...	Option Exercise	A	52.76	16,550	873,178	16,550
Feb 19 2008	SIAL	SIGMA ALDRICH CORP	Keffer Richard A	General Counsel & S ...	Option Exercise	A	52.76	1,850	97,606	1,850
Feb 19 2008	SIAL	SIGMA ALDRICH CORP	Smoller David Adam		Option Exercise	A	52.76	14,950	788,762	14,950
Feb 19 2008	SIAL	SIGMA ALDRICH CORP	Smoller David Adam		Option Exercise	A	52.76	3,450	182,022	3,450
Feb 19 2008	SIAL	SIGMA ALDRICH CORP	COTTIER GILLES	Predisent	Option Exercise	A	52.76	16,550	873,178	16,550
Feb 19 2008	SIAL	SIGMA ALDRICH CORP	COTTIER GILLES	Predisent	Option Exercise	A	52.76	1,850	97,606	1,850
Feb 19 2008	SIAL	SIGMA ALDRICH CORP	JULIEN DAVID	President, Research ...	Option Exercise	A	52.76	1,850	97,606	1,850
Feb 19 2008	SIAL	SIGMA ALDRICH CORP	JULIEN DAVID	President, Research ...	Option Exercise	A	52.76	16,550	873,178	16,550
Feb 19 2008	SIAL	SIGMA ALDRICH CORP	WICKS FRANK	President, SAFC	Option Exercise	A	52.76	16,550	873,178	16,550
Feb 19 2008	SIAL	SIGMA ALDRICH CORP	WICKS FRANK	President, SAFC	Option Exercise	A	52.76	1,850	97,606	1,850
Feb 19 2008	SIAL	SIGMA ALDRICH CORP	NAGARKATTI JAI	President & CEO	Option Exercise	A	52.76	73,150	3,859,394	73,150
Feb 19 2008	SIAL	SIGMA ALDRICH CORP	NAGARKATTI JAI	President & CEO	Option Exercise	A	52.76	1,850	97,606	1,850
Feb 19 2008	SIAL	SIGMA ALDRICH CORP	HOGAN MICHAEL R	CAO & CFO	Option Exercise	A	52.76	16,550	873,178	16,550
Feb 19 2008	SIAL	SIGMA ALDRICH CORP	HOGAN MICHAEL R	CAO & CFO	Option Exercise	A	52.76	1,850	97,606	1,850
Feb 19 2008	SIAL	SIGMA ALDRICH CORP	HOGAN MICHAEL R	CAO & CFO	Sell	S	54.09	10,000	540,922	37,470	47.5 K to 37.5 K (-21.07 %)
Jan 17 2008	SIAL	SIGMA ALDRICH CORP	HUMMEL LARRY M		Sell	J	0.00	1,000	0	11,914	12.9 K to 11.9 K (-7.74 %)
Jan 17 2008	SIAL	SIGMA ALDRICH CORP	HUMMEL LARRY M		Sell	S	55.85	1,000	55,850	12,914	13.9 K to 12.9 K (-7.19 %)
Jan 09 2008	SIAL	SIGMA ALDRICH CORP	RICHTER KIRK A	Treasurer	Option Exercise	M	18.44	1,400	25,813	0
Jan 09 2008	SIAL	SIGMA ALDRICH CORP	RICHTER KIRK A	Treasurer	Buy	M	18.44	1,400	25,813	79,642	78.2 K to 79.6 K (+1.79 %)
Jan 02 2008	SIAL	SIGMA ALDRICH CORP	TOAN BARRETT A	Director	Grant	A	0.00	1,200	0	5,600	4.4 K to 5.6 K (+27.27 %)
Jan 02 2008	SIAL	SIGMA ALDRICH CORP	SPATZ D DEAN	Director	Grant	A	0.00	1,200	0	22,000	20.8 K to 22 K (+5.77 %)
Jan 02 2008	SIAL	SIGMA ALDRICH CORP	Sear Timothy R G	Director	Grant	A	0.00	1,200	0	9,600	8.4 K to 9.6 K (+14.29 %)
Jan 02 2008	SIAL	SIGMA ALDRICH CORP	REINHARD J PEDRO	Director	Grant	A	0.00	1,200	0	3,600	2.4 K to 3.6 K (+50.00 %)
Jan 02 2008	SIAL	SIGMA ALDRICH CORP	PAUL STEVEN M	Director	Grant	A	0.00	1,200	0	2,400	1.2 K to 2.4 K (+100.00 %)
Jan 02 2008	SIAL	SIGMA ALDRICH CORP	ONEIL WILLIAM C	Director	Grant	A	0.00	1,200	0	11,600	10.4 K to 11.6 K (+11.54 %)
Jan 02 2008	SIAL	SIGMA ALDRICH CORP	Nash Avi M	Director	Grant	A	0.00	1,200	0	3,600	2.4 K to 3.6 K (+50.00 %)
Jan 02 2008	SIAL	SIGMA ALDRICH CORP	MCCOLLUM LEE	Director	Grant	A	0.00	1,200	0	5,600	4.4 K to 5.6 K (+27.27 %)
Nov 07 2007	SIAL	SIGMA ALDRICH CORP	Walton Steve	VP, Safety & Compli ...	Buy	P	51.98	430	22,351	1,330	900 to 1.3 K (+47.78 %)
Nov 08 2007	SIAL	SIGMA ALDRICH CORP	Smoller David Adam		Option Exercise	M	28.56	1,000	28,560	5,000
Nov 08 2007	SIAL	SIGMA ALDRICH CORP	Smoller David Adam		Buy	M	28.56	1,000	28,560	3,250	2.3 K to 3.3 K (+44.44 %)
Nov 07 2007	SIAL	SIGMA ALDRICH CORP	COTTIER GILLES	President, Research ...	Option Exercise	M	18.25	6,000	109,500	0
Nov 07 2007	SIAL	SIGMA ALDRICH CORP	COTTIER GILLES	President, Research ...	Option Exercise	M	13.44	1,470	19,753	0
Nov 07 2007	SIAL	SIGMA ALDRICH CORP	COTTIER GILLES	President, Research ...	Sell	M	52.31	4,170	218,133	14,784	19 K to 14.8 K (-22.00 %)
Nov 07 2007	SIAL	SIGMA ALDRICH CORP	COTTIER GILLES	President, Research ...	Buy	M	18.25	6,000	109,500	18,954	13 K to 19 K (+46.32 %)
Nov 07 2007	SIAL	SIGMA ALDRICH CORP	COTTIER GILLES	President, Research ...	Buy	M	13.44	1,470	19,753	12,954	11.5 K to 13 K (+12.80 %)
Nov 06 2007	SIAL	SIGMA ALDRICH CORP	VUILLEUMYER HERBERT		Option Exercise	M	13.44	4,000	53,750	0
Nov 06 2007	SIAL	SIGMA ALDRICH CORP	VUILLEUMYER HERBERT		Sell	M	51.72	4,000	206,880	17,520	21.5 K to 17.5 K (-18.59 %)
Nov 06 2007	SIAL	SIGMA ALDRICH CORP	VUILLEUMYER HERBERT		Buy	M	13.44	4,000	53,750	21,520	17.5 K to 21.5 K (+22.83 %)
Nov 02 2007	SIAL	SIGMA ALDRICH CORP	HARVEY DAVID R	Director	Gift	G	50.68	4,500	228,038	56,530	61 K to 56.5 K (-7.37 %)
Nov 01 2007	SIAL	SIGMA ALDRICH CORP	VAN DEN DOOL GERRIT		Option Exercise	M	18.25	12,000	219,000	0
Nov 01 2007	SIAL	SIGMA ALDRICH CORP	VAN DEN DOOL GERRIT		Option Exercise	M	16.16	7,200	116,325	0
Nov 01 2007	SIAL	SIGMA ALDRICH CORP	VAN DEN DOOL GERRIT		Sell	M	51.02	12,000	612,240	4,800	16.8 K to 4.8 K (-71.43 %)
Nov 01 2007	SIAL	SIGMA ALDRICH CORP	VAN DEN DOOL GERRIT		Buy	M	18.25	12,000	219,000	16,800	4.8 K to 16.8 K (+250.00 %)
Nov 01 2007	SIAL	SIGMA ALDRICH CORP	VAN DEN DOOL GERRIT		Sell	M	51.02	7,200	367,344	4,800	12 K to 4.8 K (-60.00 %)
Nov 01 2007	SIAL	SIGMA ALDRICH CORP	VAN DEN DOOL GERRIT		Buy	M	16.16	7,200	116,325	12,000	4.8 K to 12 K (+150.00 %)
Nov 01 2007	SIAL	SIGMA ALDRICH CORP	HUMMEL LARRY M		Sell	S	50.90	5,514	280,663	13,914	19.4 K to 13.9 K (-28.38 %)
Oct 30 2007	SIAL	SIGMA ALDRICH CORP	JULIEN DAVID	President,Research ...	Option Exercise	M	19.88	10,300	204,713	0
Oct 30 2007	SIAL	SIGMA ALDRICH CORP	JULIEN DAVID	President,Research ...	Sell	M	50.69	4,038	204,686	35,044	39.1 K to 35 K (-10.33 %)
Oct 30 2007	SIAL	SIGMA ALDRICH CORP	JULIEN DAVID	President,Research ...	Buy	M	19.88	10,300	204,713	39,082	28.8 K to 39.1 K (+35.79 %)
Oct 30 2007	SIAL	SIGMA ALDRICH CORP	JULIEN DAVID	President,Research ...	Option Exercise	M	19.88	4,700	93,413	10,300
Oct 30 2007	SIAL	SIGMA ALDRICH CORP	JULIEN DAVID	President,Research ...	Sell	M	50.41	4,700	236,943	28,782	33.5 K to 28.8 K (-14.04 %)
Oct 30 2007	SIAL	SIGMA ALDRICH CORP	JULIEN DAVID	President,Research ...	Buy	M	19.88	4,700	93,413	33,482	28.8 K to 33.5 K (+16.33 %)
Oct 30 2007	SIAL	SIGMA ALDRICH CORP	HUMMEL LARRY M		Option Exercise	M	18.25	24,000	438,000	0
Oct 30 2007	SIAL	SIGMA ALDRICH CORP	HUMMEL LARRY M		Sell	M	50.39	17,600	886,948	19,428	37 K to 19.4 K (-47.53 %)
Oct 30 2007	SIAL	SIGMA ALDRICH CORP	HUMMEL LARRY M		Buy	M	18.25	24,000	438,000	37,028	13 K to 37 K (+184.22 %)
Oct 29 2007	SIAL	SIGMA ALDRICH CORP	PORWOLL JOE		Option Exercise	M	13.44	3,700	49,719	3,700
Oct 29 2007	SIAL	SIGMA ALDRICH CORP	PORWOLL JOE		Sell	M	50.53	3,700	186,961	8,500	12.2 K to 8.5 K (-30.33 %)
Oct 29 2007	SIAL	SIGMA ALDRICH CORP	PORWOLL JOE		Buy	M	13.44	3,700	49,719	12,200	8.5 K to 12.2 K (+43.53 %)
Oct 29 2007	SIAL	SIGMA ALDRICH CORP	HOGAN MICHAEL R	CAO & CFO	Option Exercise	M	14.63	50,000	731,250	93,200
Oct 29 2007	SIAL	SIGMA ALDRICH CORP	HOGAN MICHAEL R	CAO & CFO	Sell	M	50.44	50,000	2,522,070	47,470	97.5 K to 47.5 K (-51.30 %)
Oct 29 2007	SIAL	SIGMA ALDRICH CORP	HOGAN MICHAEL R	CAO & CFO	Buy	M	14.63	50,000	731,250	97,470	47.5 K to 97.5 K (+105.33 %)
Oct 26 2007	SIAL	SIGMA ALDRICH CORP	HARVEY DAVID R	Director	Sell	S	50.50	10,000	505,000	61,030	71 K to 61 K (-14.08 %)
Oct 26 2007	SIAL	SIGMA ALDRICH CORP	WICKS FRANK	President, SAFC	Option Exercise	M	18.25	15,000	273,750	21,000
Oct 26 2007	SIAL	SIGMA ALDRICH CORP	WICKS FRANK	President, SAFC	Sell	M	50.36	15,000	755,393	21,500	36.5 K to 21.5 K (-41.10 %)
Oct 26 2007	SIAL	SIGMA ALDRICH CORP	WICKS FRANK	President, SAFC	Buy	M	18.25	15,000	273,750	36,500	21.5 K to 36.5 K (+69.77 %)
Oct 26 2007	SIAL	SIGMA ALDRICH CORP	HOGAN MICHAEL R	CAO & CFO	Sell	S	50.80	10,000	508,040	47,470	57.5 K to 47.5 K (-17.40 %)
Aug 15 2007	SIAL	SIGMA ALDRICH CORP	METEER JAMES W	VP, Quality	Option Exercise	A	46.96	1,000	46,960	1,000
Aug 09 2007	SIAL	SIGMA ALDRICH CORP	HARVEY DAVID R	Director	Gift	G	48.97	550	26,934	71,030	71.6 K to 71 K (-0.77 %)
Aug 10 2007	SIAL	SIGMA ALDRICH CORP	RICHTER KIRK A	Treasurer	Option Exercise	M	18.44	8,600	158,563	1,400
Aug 10 2007	SIAL	SIGMA ALDRICH CORP	RICHTER KIRK A	Treasurer	Buy	M	18.44	8,600	158,563	78,242	69.6 K to 78.2 K (+12.35 %)
Aug 10 2007	SIAL	SIGMA ALDRICH CORP	RICHTER KIRK A	Treasurer	Sell	S	50.85	9,200	467,789	69,642	78.8 K to 69.6 K (-11.67 %)
Aug 08 2007	SIAL	SIGMA ALDRICH CORP	Feldker David P		Option Exercise	M	25.86	3,700	95,682	2,200
Aug 08 2007	SIAL	SIGMA ALDRICH CORP	Feldker David P		Option Exercise	M	25.32	1,034	26,176	0
Aug 08 2007	SIAL	SIGMA ALDRICH CORP	Feldker David P		Sell	M	48.90	4,734	231,509	2,930	7.7 K to 2.9 K (-61.77 %)
Aug 08 2007	SIAL	SIGMA ALDRICH CORP	Feldker David P		Buy	M	25.86	3,700	95,682	7,664	4 K to 7.7 K (+93.34 %)
Aug 08 2007	SIAL	SIGMA ALDRICH CORP	Feldker David P		Buy	M	25.32	1,034	26,176	3,964	2.9 K to 4 K (+35.29 %)
Aug 08 2007	SIAL	SIGMA ALDRICH CORP	Zihlmann Josef		Option Exercise	M	18.25	2,000	36,500	5,000
Aug 08 2007	SIAL	SIGMA ALDRICH CORP	Zihlmann Josef		Sell	M	48.90	2,000	97,800	4,000	6 K to 4 K (-33.33 %)
Aug 08 2007	SIAL	SIGMA ALDRICH CORP	Zihlmann Josef		Buy	M	18.25	2,000	36,500	6,000	4 K to 6 K (+50.00 %)
Aug 07 2007	SIAL	SIGMA ALDRICH CORP	JULIEN DAVID	President,Research ...	Option Exercise	M	19.88	15,000	298,125	15,000
Aug 07 2007	SIAL	SIGMA ALDRICH CORP	JULIEN DAVID	President,Research ...	Sell	M	47.64	15,000	714,548	28,782	43.8 K to 28.8 K (-34.26 %)
Aug 07 2007	SIAL	SIGMA ALDRICH CORP	JULIEN DAVID	President,Research ...	Buy	M	19.88	15,000	298,125	43,782	28.8 K to 43.8 K (+52.12 %)
Aug 08 2007	SIAL	SIGMA ALDRICH CORP	Rau Douglas	VP, Human Resources	Buy	P	48.81	500	24,404	1,000	500 to 1,000 (+100.00 %)
Aug 08 2007	SIAL	SIGMA ALDRICH CORP	Rau Douglas	VP, Human Resources	Buy	P	48.52	500	24,259	500	0 to 500
Aug 07 2007	SIAL	SIGMA ALDRICH CORP	PORWOLL JOE		Option Exercise	M	13.44	2,600	34,938	7,400
Aug 07 2007	SIAL	SIGMA ALDRICH CORP	PORWOLL JOE		Sell	M	47.61	2,600	123,790	8,500	11.1 K to 8.5 K (-23.42 %)
Aug 07 2007	SIAL	SIGMA ALDRICH CORP	PORWOLL JOE		Buy	M	13.44	2,600	34,938	11,100	8.5 K to 11.1 K (+30.59 %)
Aug 06 2007	SIAL	SIGMA ALDRICH CORP	HARVEY DAVID R	Director	Option Exercise	M	25.32	7,800	197,457	0
Aug 06 2007	SIAL	SIGMA ALDRICH CORP	HARVEY DAVID R	Director	Sell	M	46.18	4,250	196,265	71,580	75.8 K to 71.6 K (-5.60 %)

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