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

Overview of all insider trading transactions in ALEXION PHARMACEUTICALS, INC.. Get notifications about new insider transactions in ALEXION PHARMACEUTICALS, INC. for free.

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Date	Ticker	Company	Owner	Relationship	Transaction	Code	Cost ($)	Shares	Transaction Value ($)	Total Shares	% Holdings
Nov 19 2004	ALXN	ALEXION PHARMACEUT ...	SQUINTO STEPHEN P	EVP, Head of Resear ...	Buy	M	2.38	1,875	4,453	30,001	28.1 K to 30 K (+6.67 %)
Nov 18 2004	ALXN	ALEXION PHARMACEUT ...	SQUINTO STEPHEN P	EVP, Head of Resear ...	Option Exercise	M	2.38	3,125	7,422	13,125
Nov 18 2004	ALXN	ALEXION PHARMACEUT ...	SQUINTO STEPHEN P	EVP, Head of Resear ...	Option Exercise	M	2.38	1,875	4,453	0
Nov 18 2004	ALXN	ALEXION PHARMACEUT ...	SQUINTO STEPHEN P	EVP, Head of Resear ...	Sell	S	21.00	1,000	21,001	28,126	29.1 K to 28.1 K (-3.43 %)
Nov 18 2004	ALXN	ALEXION PHARMACEUT ...	SQUINTO STEPHEN P	EVP, Head of Resear ...	Sell	S	20.82	336	6,996	29,126	29.5 K to 29.1 K (-1.14 %)
Nov 18 2004	ALXN	ALEXION PHARMACEUT ...	SQUINTO STEPHEN P	EVP, Head of Resear ...	Sell	S	20.84	1,964	40,930	29,462	31.4 K to 29.5 K (-6.25 %)
Nov 18 2004	ALXN	ALEXION PHARMACEUT ...	SQUINTO STEPHEN P	EVP, Head of Resear ...	Sell	S	21.17	1,700	35,989	31,426	33.1 K to 31.4 K (-5.13 %)
Nov 18 2004	ALXN	ALEXION PHARMACEUT ...	SQUINTO STEPHEN P	EVP, Head of Resear ...	Buy	M	2.38	3,125	7,422	33,126	30 K to 33.1 K (+10.42 %)
Nov 18 2004	ALXN	ALEXION PHARMACEUT ...	SQUINTO STEPHEN P	EVP, Head of Resear ...	Buy	M	2.38	1,875	4,453	30,001	28.1 K to 30 K (+6.67 %)
Nov 15 2004	ALXN	ALEXION PHARMACEUT ...	SQUINTO STEPHEN P	EVP, Head of Resear ...	Gift	G	0.00	1,200	0	28,126	29.3 K to 28.1 K (-4.09 %)
Nov 15 2004	ALXN	ALEXION PHARMACEUT ...	SQUINTO STEPHEN P	EVP, Head of Resear ...	Gift	G	0.00	1,200	0	29,326	30.5 K to 29.3 K (-3.93 %)
Nov 15 2004	ALXN	ALEXION PHARMACEUT ...	SQUINTO STEPHEN P	EVP, Head of Resear ...	Gift	G	0.00	1,200	0	30,526	31.7 K to 30.5 K (-3.78 %)
Nov 09 2004	ALXN	ALEXION PHARMACEUT ...	BELL LEONARD	Chief Executive Off ...	Option Exercise	M	2.38	1,501	3,565	67,708
Nov 09 2004	ALXN	ALEXION PHARMACEUT ...	BELL LEONARD	Chief Executive Off ...	Option Exercise	M	2.38	11,952	28,386	0
Nov 09 2004	ALXN	ALEXION PHARMACEUT ...	BELL LEONARD	Chief Executive Off ...	Sell	S	19.94	7,801	155,552	255,312	263.1 K to 255.3 K (-2.96 %)
Nov 09 2004	ALXN	ALEXION PHARMACEUT ...	BELL LEONARD	Chief Executive Off ...	Buy	M	2.38	1,501	3,565	263,113	261.6 K to 263.1 K (+0.57 %)
Nov 09 2004	ALXN	ALEXION PHARMACEUT ...	BELL LEONARD	Chief Executive Off ...	Buy	M	2.38	11,952	28,386	261,612	249.7 K to 261.6 K (+4.79 %)
Nov 08 2004	ALXN	ALEXION PHARMACEUT ...	BELL LEONARD	Chief Executive Off ...	Option Exercise	M	2.38	547	1,299	11,952
Nov 08 2004	ALXN	ALEXION PHARMACEUT ...	BELL LEONARD	Chief Executive Off ...	Sell	S	20.00	199	3,980	249,660	249.9 K to 249.7 K (-0.08 %)
Nov 08 2004	ALXN	ALEXION PHARMACEUT ...	BELL LEONARD	Chief Executive Off ...	Buy	M	2.38	547	1,299	249,859	249.3 K to 249.9 K (+0.22 %)
Nov 01 2004	ALXN	ALEXION PHARMACEUT ...	KEISER DAVID W	President & Chief O ...	Option Exercise	M	2.38	11,500	27,313	2,000
Nov 01 2004	ALXN	ALEXION PHARMACEUT ...	KEISER DAVID W	President & Chief O ...	Sell	S	17.90	6,000	107,400	44,500	50.5 K to 44.5 K (-11.88 %)
Nov 01 2004	ALXN	ALEXION PHARMACEUT ...	KEISER DAVID W	President & Chief O ...	Buy	M	2.38	11,500	27,313	50,500	39 K to 50.5 K (+29.49 %)
Oct 25 2004	ALXN	ALEXION PHARMACEUT ...	BELL LEONARD	Chief Executive Off ...	Option Exercise	M	2.38	29,167	69,272	12,499
Oct 25 2004	ALXN	ALEXION PHARMACEUT ...	BELL LEONARD	Chief Executive Off ...	Sell	S	16.85	2,527	42,580	249,312	251.8 K to 249.3 K (-1.00 %)
Oct 25 2004	ALXN	ALEXION PHARMACEUT ...	BELL LEONARD	Chief Executive Off ...	Sell	S	16.90	923	15,599	251,839	252.8 K to 251.8 K (-0.37 %)
Oct 25 2004	ALXN	ALEXION PHARMACEUT ...	BELL LEONARD	Chief Executive Off ...	Sell	S	16.91	571	9,656	252,762	253.3 K to 252.8 K (-0.23 %)
Oct 25 2004	ALXN	ALEXION PHARMACEUT ...	BELL LEONARD	Chief Executive Off ...	Sell	S	16.95	4,375	74,156	253,333	257.7 K to 253.3 K (-1.70 %)
Oct 25 2004	ALXN	ALEXION PHARMACEUT ...	BELL LEONARD	Chief Executive Off ...	Sell	S	16.96	200	3,392	257,708	257.9 K to 257.7 K (-0.08 %)
Oct 25 2004	ALXN	ALEXION PHARMACEUT ...	BELL LEONARD	Chief Executive Off ...	Sell	S	16.97	100	1,697	257,908	258 K to 257.9 K (-0.04 %)
Oct 25 2004	ALXN	ALEXION PHARMACEUT ...	BELL LEONARD	Chief Executive Off ...	Sell	S	17.00	5,279	89,743	258,008	263.3 K to 258 K (-2.01 %)
Oct 25 2004	ALXN	ALEXION PHARMACEUT ...	BELL LEONARD	Chief Executive Off ...	Sell	S	17.03	325	5,535	263,287	263.6 K to 263.3 K (-0.12 %)
Oct 25 2004	ALXN	ALEXION PHARMACEUT ...	BELL LEONARD	Chief Executive Off ...	Sell	S	17.05	100	1,705	263,612	263.7 K to 263.6 K (-0.04 %)
Oct 25 2004	ALXN	ALEXION PHARMACEUT ...	BELL LEONARD	Chief Executive Off ...	Sell	S	17.07	1,000	17,070	263,712	264.7 K to 263.7 K (-0.38 %)
Oct 25 2004	ALXN	ALEXION PHARMACEUT ...	BELL LEONARD	Chief Executive Off ...	Sell	S	17.08	300	5,124	264,712	265 K to 264.7 K (-0.11 %)
Oct 25 2004	ALXN	ALEXION PHARMACEUT ...	BELL LEONARD	Chief Executive Off ...	Sell	S	17.20	500	8,600	265,012	265.5 K to 265 K (-0.19 %)
Oct 25 2004	ALXN	ALEXION PHARMACEUT ...	BELL LEONARD	Chief Executive Off ...	Sell	S	17.21	100	1,721	265,512	265.6 K to 265.5 K (-0.04 %)
Oct 25 2004	ALXN	ALEXION PHARMACEUT ...	BELL LEONARD	Chief Executive Off ...	Sell	S	17.30	700	12,110	265,612	266.3 K to 265.6 K (-0.26 %)
Oct 25 2004	ALXN	ALEXION PHARMACEUT ...	BELL LEONARD	Chief Executive Off ...	Buy	M	2.38	29,167	69,272	266,312	237.1 K to 266.3 K (+12.30 %)
Oct 19 2004	ALXN	ALEXION PHARMACEUT ...	SQUINTO STEPHEN P	EVP, Head of Resear ...	Option Exercise	M	2.38	18,125	43,047	1,875
Oct 19 2004	ALXN	ALEXION PHARMACEUT ...	SQUINTO STEPHEN P	EVP, Head of Resear ...	Sell	S	17.11	2,725	46,625	31,726	34.5 K to 31.7 K (-7.91 %)
Oct 19 2004	ALXN	ALEXION PHARMACEUT ...	SQUINTO STEPHEN P	EVP, Head of Resear ...	Sell	S	17.50	400	7,000	34,451	34.9 K to 34.5 K (-1.15 %)
Oct 19 2004	ALXN	ALEXION PHARMACEUT ...	SQUINTO STEPHEN P	EVP, Head of Resear ...	Sell	S	17.30	5,000	86,500	34,851	39.9 K to 34.9 K (-12.55 %)
Oct 19 2004	ALXN	ALEXION PHARMACEUT ...	SQUINTO STEPHEN P	EVP, Head of Resear ...	Sell	S	17.26	4,600	79,396	39,851	44.5 K to 39.9 K (-10.35 %)
Oct 19 2004	ALXN	ALEXION PHARMACEUT ...	SQUINTO STEPHEN P	EVP, Head of Resear ...	Sell	S	17.30	400	6,920	44,451	44.9 K to 44.5 K (-0.89 %)
Oct 19 2004	ALXN	ALEXION PHARMACEUT ...	SQUINTO STEPHEN P	EVP, Head of Resear ...	Sell	S	16.70	110	1,837	44,851	45 K to 44.9 K (-0.24 %)
Oct 19 2004	ALXN	ALEXION PHARMACEUT ...	SQUINTO STEPHEN P	EVP, Head of Resear ...	Sell	S	16.65	4,890	81,419	44,961	49.9 K to 45 K (-9.81 %)
Oct 19 2004	ALXN	ALEXION PHARMACEUT ...	SQUINTO STEPHEN P	EVP, Head of Resear ...	Buy	M	2.38	18,125	43,047	49,851	31.7 K to 49.9 K (+57.13 %)
Oct 15 2004	ALXN	ALEXION PHARMACEUT ...	LUKE BARRY P	VP Finance & Admini ...	Option Exercise	M	2.38	10,000	23,750	0
Oct 15 2004	ALXN	ALEXION PHARMACEUT ...	LUKE BARRY P	VP Finance & Admini ...	Buy	M	2.38	10,000	23,750	23,300	13.3 K to 23.3 K (+75.19 %)
Oct 15 2004	ALXN	ALEXION PHARMACEUT ...	DUBIN THOMAS I H	VP & General Counse ...	Buy	P	17.34	949	16,456	2,000	1.1 K to 2 K (+90.29 %)
Oct 15 2004	ALXN	ALEXION PHARMACEUT ...	DUBIN THOMAS I H	VP & General Counse ...	Buy	P	17.31	100	1,731	1,051	951 to 1.1 K (+10.52 %)
Oct 15 2004	ALXN	ALEXION PHARMACEUT ...	DUBIN THOMAS I H	VP & General Counse ...	Buy	P	17.30	300	5,190	951	651 to 951 (+46.08 %)
Oct 15 2004	ALXN	ALEXION PHARMACEUT ...	DUBIN THOMAS I H	VP & General Counse ...	Buy	P	17.29	651	11,256	651	0 to 651
Sep 27 2004	ALXN	ALEXION PHARMACEUT ...	BELL LEONARD	Chief Executive Off ...	Option Exercise	M	2.38	8,334	19,793	41,666
Sep 27 2004	ALXN	ALEXION PHARMACEUT ...	BELL LEONARD	Chief Executive Off ...	Option Exercise	M	2.38	20,833	49,478	0
Sep 27 2004	ALXN	ALEXION PHARMACEUT ...	BELL LEONARD	Chief Executive Off ...	Sell	S	17.90	2,167	38,789	237,145	239.3 K to 237.1 K (-0.91 %)
Sep 27 2004	ALXN	ALEXION PHARMACEUT ...	BELL LEONARD	Chief Executive Off ...	Sell	S	17.45	5,000	87,250	239,312	244.3 K to 239.3 K (-2.05 %)
Sep 27 2004	ALXN	ALEXION PHARMACEUT ...	BELL LEONARD	Chief Executive Off ...	Sell	S	17.55	2,000	35,100	244,312	246.3 K to 244.3 K (-0.81 %)
Sep 27 2004	ALXN	ALEXION PHARMACEUT ...	BELL LEONARD	Chief Executive Off ...	Buy	M	2.38	8,334	19,793	246,312	238 K to 246.3 K (+3.50 %)
Sep 27 2004	ALXN	ALEXION PHARMACEUT ...	BELL LEONARD	Chief Executive Off ...	Buy	M	2.38	20,833	49,478	237,978	217.1 K to 238 K (+9.59 %)
Sep 16 2004	ALXN	ALEXION PHARMACEUT ...	SQUINTO STEPHEN P	Exec VP & Head of R ...	Option Exercise	M	2.38	1,250	2,969	3,750
Sep 16 2004	ALXN	ALEXION PHARMACEUT ...	SQUINTO STEPHEN P	Exec VP & Head of R ...	Option Exercise	M	2.38	6,875	16,328	0
Sep 16 2004	ALXN	ALEXION PHARMACEUT ...	SQUINTO STEPHEN P	Exec VP & Head of R ...	Option Exercise	M	2.38	10,000	23,750	20,000
Sep 16 2004	ALXN	ALEXION PHARMACEUT ...	SQUINTO STEPHEN P	Exec VP & Head of R ...	Buy	M	2.38	1,250	2,969	31,726	30.5 K to 31.7 K (+4.10 %)
Sep 16 2004	ALXN	ALEXION PHARMACEUT ...	SQUINTO STEPHEN P	Exec VP & Head of R ...	Buy	M	2.38	6,875	16,328	30,476	23.6 K to 30.5 K (+29.13 %)
Sep 16 2004	ALXN	ALEXION PHARMACEUT ...	SQUINTO STEPHEN P	Exec VP & Head of R ...	Sell	S	17.50	5,000	87,500	23,601	28.6 K to 23.6 K (-17.48 %)
Sep 16 2004	ALXN	ALEXION PHARMACEUT ...	SQUINTO STEPHEN P	Exec VP & Head of R ...	Sell	S	17.75	5,000	88,750	28,601	33.6 K to 28.6 K (-14.88 %)
Sep 16 2004	ALXN	ALEXION PHARMACEUT ...	SQUINTO STEPHEN P	Exec VP & Head of R ...	Buy	M	2.38	10,000	23,750	33,601	23.6 K to 33.6 K (+42.37 %)
Sep 30 2004	ALXN	ALEXION PHARMACEUT ...	KEISER DAVID W	President & Chief O ...	Option Exercise	M	2.38	11,500	27,313	2,000
Sep 30 2004	ALXN	ALEXION PHARMACEUT ...	KEISER DAVID W	President & Chief O ...	Sell	S	18.05	200	3,610	39,000	39.2 K to 39 K (-0.51 %)
Sep 30 2004	ALXN	ALEXION PHARMACEUT ...	KEISER DAVID W	President & Chief O ...	Sell	S	18.06	3,800	68,628	39,200	43 K to 39.2 K (-8.84 %)
Sep 30 2004	ALXN	ALEXION PHARMACEUT ...	KEISER DAVID W	President & Chief O ...	Buy	M	2.38	11,500	27,313	43,000	31.5 K to 43 K (+36.51 %)
Aug 25 2004	ALXN	ALEXION PHARMACEUT ...	BELL LEONARD	Chief Executive Off ...	Option Exercise	M	2.38	29,167	69,272	20,833
Aug 25 2004	ALXN	ALEXION PHARMACEUT ...	BELL LEONARD	Chief Executive Off ...	Sell	S	15.55	3,480	54,114	217,145	220.6 K to 217.1 K (-1.58 %)
Aug 25 2004	ALXN	ALEXION PHARMACEUT ...	BELL LEONARD	Chief Executive Off ...	Sell	S	16.00	996	15,936	220,625	221.6 K to 220.6 K (-0.45 %)
Aug 25 2004	ALXN	ALEXION PHARMACEUT ...	BELL LEONARD	Chief Executive Off ...	Sell	S	16.40	300	4,920	221,621	221.9 K to 221.6 K (-0.14 %)
Aug 25 2004	ALXN	ALEXION PHARMACEUT ...	BELL LEONARD	Chief Executive Off ...	Sell	S	16.41	224	3,676	221,921	222.1 K to 221.9 K (-0.10 %)
Aug 25 2004	ALXN	ALEXION PHARMACEUT ...	BELL LEONARD	Chief Executive Off ...	Sell	S	15.70	4,167	65,422	222,145	226.3 K to 222.1 K (-1.84 %)
Aug 25 2004	ALXN	ALEXION PHARMACEUT ...	BELL LEONARD	Chief Executive Off ...	Buy	M	2.38	29,167	69,272	226,312	197.1 K to 226.3 K (+14.79 %)
Aug 31 2004	ALXN	ALEXION PHARMACEUT ...	KEISER DAVID W	President & Chief O ...	Option Exercise	M	2.38	11,500	27,313	13,500
Aug 31 2004	ALXN	ALEXION PHARMACEUT ...	KEISER DAVID W	President & Chief O ...	Sell	S	16.10	4,000	64,400	31,500	35.5 K to 31.5 K (-11.27 %)
Aug 31 2004	ALXN	ALEXION PHARMACEUT ...	KEISER DAVID W	President & Chief O ...	Buy	M	2.38	11,500	27,313	35,500	24 K to 35.5 K (+47.92 %)
Aug 18 2004	ALXN	ALEXION PHARMACEUT ...	SQUINTO STEPHEN P	Executive VP& Head ...	Option Exercise	M	2.38	8,125	19,297	24,375
Aug 18 2004	ALXN	ALEXION PHARMACEUT ...	SQUINTO STEPHEN P	Executive VP& Head ...	Option Exercise	M	2.38	10,000	23,750	30,000
Aug 18 2004	ALXN	ALEXION PHARMACEUT ...	SQUINTO STEPHEN P	Executive VP& Head ...	Buy	M	2.38	8,125	19,297	23,601	15.5 K to 23.6 K (+52.50 %)
Aug 18 2004	ALXN	ALEXION PHARMACEUT ...	SQUINTO STEPHEN P	Executive VP& Head ...	Sell	S	15.30	10,000	153,000	15,476	25.5 K to 15.5 K (-39.25 %)
Aug 18 2004	ALXN	ALEXION PHARMACEUT ...	SQUINTO STEPHEN P	Executive VP& Head ...	Buy	M	2.38	10,000	23,750	25,476	15.5 K to 25.5 K (+64.62 %)
Aug 13 2004	ALXN	ALEXION PHARMACEUT ...	LINK MAX	Director	Option Exercise	D	10.74	1,334	14,327	2,666
Aug 13 2004	ALXN	ALEXION PHARMACEUT ...	LINK MAX	Director	Option Exercise	D	15.58	2,500	38,950	5,000
Aug 13 2004	ALXN	ALEXION PHARMACEUT ...	LINK MAX	Director	Option Exercise	D	21.76	5,000	108,800	2,500
Aug 13 2004	ALXN	ALEXION PHARMACEUT ...	LINK MAX	Director	Option Exercise	D	11.75	667	7,837	0
Aug 13 2004	ALXN	ALEXION PHARMACEUT ...	LINK MAX	Director	Buy	P	10.74	1,334	14,327	37,667	36.3 K to 37.7 K (+3.67 %)
Aug 13 2004	ALXN	ALEXION PHARMACEUT ...	LINK MAX	Director	Buy	P	15.58	2,500	38,950	36,333	33.8 K to 36.3 K (+7.39 %)
Aug 13 2004	ALXN	ALEXION PHARMACEUT ...	LINK MAX	Director	Buy	P	21.76	5,000	108,800	33,833	28.8 K to 33.8 K (+17.34 %)
Aug 13 2004	ALXN	ALEXION PHARMACEUT ...	LINK MAX	Director	Buy	P	11.75	667	7,837	28,833	28.2 K to 28.8 K (+2.37 %)
Jul 19 2004	ALXN	ALEXION PHARMACEUT ...	BOWDISH KATHERINE S	Senior Vice Preside ...	Sell	S	16.61	700	11,627	35,196	35.9 K to 35.2 K (-1.95 %)
Jul 19 2004	ALXN	ALEXION PHARMACEUT ...	BOWDISH KATHERINE S	Senior Vice Preside ...	Sell	S	16.64	1,300	21,632	35,896	37.2 K to 35.9 K (-3.49 %)
Jun 17 2004	ALXN	ALEXION PHARMACEUT ...	MATHIS LARRY	Director	Buy	P	18.14	1,000	18,140	1,000	0 to 1,000
Jun 17 2004	ALXN	ALEXION PHARMACEUT ...	MATHIS LARRY	Director	Buy	P	18.14	1,000	18,140	1,000	0 to 1,000
May 11 2004	ALXN	ALEXION PHARMACEUT ...	BELL LEONARD	Chief Executive Off ...	Sell	S	21.01	4,000	84,040	200,145	204.1 K to 200.1 K (-1.96 %)
May 11 2004	ALXN	ALEXION PHARMACEUT ...	SQUINTO STEPHEN P	Executive VP/Head o ...	Sell	S	21.01	5,000	105,050	15,476	20.5 K to 15.5 K (-24.42 %)
Apr 20 2004	ALXN	ALEXION PHARMACEUT ...	LUKE BARRY P	VP Finance & Admins ...	Sell	S	23.41	5,000	117,050	13,300	18.3 K to 13.3 K (-27.32 %)
May 11 2004	ALXN	ALEXION PHARMACEUT ...	KEISER DAVID W	President & Chief O ...	Sell	S	21.01	3,000	63,030	24,000	27 K to 24 K (-11.11 %)
Apr 20 2004	ALXN	ALEXION PHARMACEUT ...	BOWDISH KATHERINE S	Sr. Vice President	Sell	S	23.27	4,300	100,061	37,196	41.5 K to 37.2 K (-10.36 %)
Mar 02 2004	ALXN	ALEXION PHARMACEUT ...	BELL LEONARD	Chief Executive Off ...	Sell	S	25.00	6,000	150,000	204,145	210.1 K to 204.1 K (-2.86 %)
Feb 26 2004	ALXN	ALEXION PHARMACEUT ...	MOTOLA NANCY	Sr. VP Regulatory & ...	Option Exercise	A	23.29	10,000	232,900	10,000
Feb 26 2004	ALXN	ALEXION PHARMACEUT ...	LUKE BARRY P	VP Finance & Admini ...	Option Exercise	A	23.29	10,000	232,900	10,000
Feb 26 2004	ALXN	ALEXION PHARMACEUT ...	ROLLINS SCOTT A	SR. VP Drug Dev & P ...	Option Exercise	A	23.29	10,000	232,900	10,000
Feb 26 2004	ALXN	ALEXION PHARMACEUT ...	BOWDISH KATHERINE S	Senior Vice Preside ...	Option Exercise	A	23.29	10,000	232,900	10,000
Feb 25 2004	ALXN	ALEXION PHARMACEUT ...	MOJCIK CHRISTOPHER F	Sr. VP Clinical Dev ...	Option Exercise	A	23.29	15,000	349,350	15,000
Feb 25 2004	ALXN	ALEXION PHARMACEUT ...	DUBIN THOMAS I H	Vice President & Ge ...	Option Exercise	A	23.29	10,000	232,900	10,000
Feb 25 2004	ALXN	ALEXION PHARMACEUT ...	SQUINTO STEPHEN P	Exec VP & Head of R ...	Option Exercise	A	23.29	10,000	232,900	10,000
Feb 25 2004	ALXN	ALEXION PHARMACEUT ...	KEISER DAVID W	President & Chief O ...	Option Exercise	A	23.29	10,000	232,900	10,000
Feb 25 2004	ALXN	ALEXION PHARMACEUT ...	BELL LEONARD	Chief Executive Off ...	Option Exercise	A	23.29	17,000	395,930	17,000
Feb 10 2004	ALXN	ALEXION PHARMACEUT ...	SQUINTO STEPHEN P	Executive VP/Head o ...	Sell	S	20.58	5,000	102,875	20,476	25.5 K to 20.5 K (-19.63 %)
Feb 10 2004	ALXN	ALEXION PHARMACEUT ...	KEISER DAVID W	President & Chief O ...	Sell	S	20.58	3,000	61,725	27,000	30 K to 27 K (-10.00 %)
Feb 10 2004	ALXN	ALEXION PHARMACEUT ...	BELL LEONARD	Chief Executive Off ...	Sell	S	20.58	4,000	82,300	210,145	214.1 K to 210.1 K (-1.87 %)
Feb 09 2004	ALXN	ALEXION PHARMACEUT ...	SQUINTO STEPHEN P	Exec VP, Head of Re ...	Buy	J	17.35	399	6,923	25,476	25.1 K to 25.5 K (+1.59 %)
Dec 17 2003	ALXN	ALEXION PHARMACEUT ...	LINK MAX	Director	Option Exercise	A	17.05	7,500	127,875	7,500
Dec 17 2003	ALXN	ALEXION PHARMACEUT ...	NORBY R DOUGLAS	Director	Option Exercise	A	17.05	7,500	127,875	7,500
Dec 17 2003	ALXN	ALEXION PHARMACEUT ...	PARVEN ALVIN S	Director	Option Exercise	A	17.05	7,500	127,875	7,500
Dec 17 2003	ALXN	ALEXION PHARMACEUT ...	MADRI JOSEPH A	Director	Option Exercise	A	17.05	7,500	127,875	7,500
Dec 17 2003	ALXN	ALEXION PHARMACEUT ...	JACKSON JERRY T	Director	Option Exercise	A	17.05	7,500	127,875	7,500
Dec 03 2003	ALXN	ALEXION PHARMACEUT ...	BELL LEONARD	Chief Executive Off ...	Sell	S	20.20	4,000	80,800	214,145	218.1 K to 214.1 K (-1.83 %)
Dec 03 2003	ALXN	ALEXION PHARMACEUT ...	SQUINTO STEPHEN P	Executive VP/Head o ...	Sell	S	20.20	5,000	101,000	25,077	30.1 K to 25.1 K (-16.62 %)
Dec 03 2003	ALXN	ALEXION PHARMACEUT ...	KEISER DAVID W	President, Chief Op ...	Sell	S	20.20	3,000	60,600	30,000	33 K to 30 K (-9.09 %)
Nov 13 2003	ALXN	ALEXION PHARMACEUT ...	SQUINTO STEPHEN P	Exec. VP & Head of ...	Option Exercise	A	17.67	12,000	212,040	12,000
Nov 13 2003	ALXN	ALEXION PHARMACEUT ...	ROLLINS SCOTT A	Sr. VP Drug Dev. & ...	Option Exercise	A	17.67	10,000	176,700	10,000
Nov 13 2003	ALXN	ALEXION PHARMACEUT ...	MOTOLA NANCY	VP Regulatory & Qua ...	Option Exercise	A	17.67	10,000	176,700	10,000
Nov 13 2003	ALXN	ALEXION PHARMACEUT ...	MOJCIK CHRISTOPHER F	VP Clinical Develop ...	Option Exercise	A	17.67	10,000	176,700	10,000
Nov 13 2003	ALXN	ALEXION PHARMACEUT ...	LUKE BARRY P	Vice Pres., Finance ...	Option Exercise	A	17.67	10,000	176,700	10,000
Nov 13 2003	ALXN	ALEXION PHARMACEUT ...	KEISER DAVID W	President & Chief O ...	Option Exercise	A	17.67	12,000	212,040	12,000
Nov 13 2003	ALXN	ALEXION PHARMACEUT ...	BOWDISH KATHERINE S	Senior Vice Preside ...	Option Exercise	A	17.67	10,000	176,700	10,000
Nov 13 2003	ALXN	ALEXION PHARMACEUT ...	DUBIN THOMAS I H	Vice Pres. & Genera ...	Option Exercise	A	17.67	10,000	176,700	10,000
Nov 13 2003	ALXN	ALEXION PHARMACEUT ...	BELL LEONARD	Chief Executive Off ...	Option Exercise	A	17.67	20,000	353,400	20,000
Oct 03 2003	ALXN	ALEXION PHARMACEUT ...	SQUINTO STEPHEN P	Executive VP	Sell	S	20.01	5,000	100,050	30,077	35.1 K to 30.1 K (-14.25 %)
Oct 03 2003	ALXN	ALEXION PHARMACEUT ...	KEISER DAVID W	President, Chief Op ...	Sell	S	20.01	3,000	60,030	33,000	36 K to 33 K (-8.33 %)
Oct 03 2003	ALXN	ALEXION PHARMACEUT ...	BELL LEONARD	Chief Executive Off ...	Sell	S	20.01	4,000	80,040	215,145	219.1 K to 215.1 K (-1.83 %)

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