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ALXN
- As of 05/31/24, 12:10:43 PM: 121 Insider Transactions.
Sector:
Healthcare
Industry:
Biotechnology
Prev Close:
$125.30
Avg Vol(3m):
1,882,510
P/E:
189.50
EPS:
0.66
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Insider Transactions for ALXN
Buy/Sell*
Filed Date
Subject
Symbol
Acquirer
Pct Owned
Details
S
2020-02-14 13:29:49.0
ALEXION PHARMACEUTICALS
ALXN
PRICE T ROWE ASSOCIATES INC
5.4%
view
B
2020-02-13 10:36:43.0
ALEXION PHARMACEUTICALS
ALXN
STATE STREET CORP
5.13%
view
B
2020-02-12 11:01:06.0
ALEXION PHARMACEUTICALS
ALXN
VANGUARD GROUP INC
7.57%
view
S
2020-02-05 11:26:05.0
ALEXION PHARMACEUTICALS
ALXN
BlackRock Inc
7.2%
view
S
2020-01-10 10:25:37.0
ALEXION PHARMACEUTICALS
ALXN
FMR LLC
6.69%
view
S
2019-02-14 13:48:11.0
ALEXION PHARMACEUTICALS
ALXN
PRICE T ROWE ASSOCIATES INC
7.9%
view
S
2019-02-12 12:10:43.0
ALEXION PHARMACEUTICALS
ALXN
STATE STREET CORP
4.9%
view
B
2019-02-11 10:30:45.0
ALEXION PHARMACEUTICALS
ALXN
VANGUARD GROUP INC
7.27%
view
S
2019-02-04 10:09:24.0
ALEXION PHARMACEUTICALS
ALXN
BlackRock Inc
7.3%
view
B
2018-11-13 10:38:14.0
ALEXION PHARMACEUTICALS
ALXN
FMR LLC
11.122%
view
B
2018-06-11 10:19:16.0
ALEXION PHARMACEUTICALS INC
ALXN
PRICE T ROWE ASSOCIATES INC
10.0%
view
S
2018-02-14 13:58:26.0
ALEXION PHARMACEUTICALS INC
ALXN
PRICE T ROWE ASSOCIATES INC
9.4%
view
B
2018-02-13 13:11:18.0
ALEXION PHARMACEUTICALS INC
ALXN
STATE STREET CORP
5.19%
view
S
2018-02-13 09:33:16.0
ALEXION PHARMACEUTICALS INC
ALXN
FMR LLC
7.926%
view
B
2018-02-12 09:07:12.0
ALEXION PHARMACEUTICALS INC
ALXN
VANGUARD GROUP INC
6.8%
view
S
2018-01-29 16:38:00.0
ALEXION PHARMACEUTICALS INC
ALXN
BlackRock Inc
8.1%
view
B
2017-06-09 12:27:32.0
ALEXION PHARMACEUTICALS INC
ALXN
PRICE T ROWE ASSOCIATES INC
10.0%
view
B
2017-02-14 10:42:13.0
ALEXION PHARMACEUTICALS INC
ALXN
FMR LLC
12.564%
view
S
2017-02-13 16:37:49.0
ALEXION PHARMACEUTICALS INC
ALXN
Capital Research Global Investors
3.2%
view
B
2017-02-08 19:52:08.0
ALEXION PHARMACEUTICALS INC
ALXN
VANGUARD GROUP INC
6.25%
view
S
2017-02-06 13:31:02.0
ALEXION PHARMACEUTICALS INC
ALXN
PRICE T ROWE ASSOCIATES INC
9.4%
view
B
2017-01-19 17:23:56.0
ALEXION PHARMACEUTICALS INC
ALXN
BlackRock Inc
8.3%
view
S
2016-09-09 10:44:00.0
ALEXION PHARMACEUTICALS INC
ALXN
Capital Research Global Investors
6.8%
view
B
2016-08-10 10:57:16.0
ALEXION PHARMACEUTICALS INC
ALXN
FMR LLC
10.011%
view
B
2016-02-12 17:36:05.0
ALEXION PHARMACEUTICALS INC
ALXN
Capital Research Global Investors
12.2%
view
S
2016-02-12 08:49:30.0
ALEXION PHARMACEUTICALS INC
ALXN
FMR LLC
6.621%
view
B
2016-02-12 08:17:30.0
ALEXION PHARMACEUTICALS INC
ALXN
PRICE T ROWE ASSOCIATES INC
12.5%
view
B
2016-02-10 10:34:59.0
ALEXION PHARMACEUTICALS INC
ALXN
VANGUARD GROUP INC
5.75%
view
B
2016-02-10 10:15:52.0
ALEXION PHARMACEUTICALS INC
ALXN
BlackRock Inc
6.9%
view
B
2015-02-13 13:57:56.0
ALEXION PHARMACEUTICALS INC
ALXN
Capital Research Global Investors
12.2%
view
B
2015-02-13 12:24:07.0
ALEXION PHARMACEUTICALS INC
ALXN
PRICE T ROWE ASSOCIATES INC
10.1%
view
B
2015-02-13 09:55:56.0
ALEXION PHARMACEUTICALS INC
ALXN
FMR LLC
11.168%
view
B
2015-02-11 13:49:11.0
ALEXION PHARMACEUTICALS INC
ALXN
VANGUARD GROUP INC
5.37%
view
B
2015-02-06 17:52:08.0
ALEXION PHARMACEUTICALS INC
ALXN
BlackRock Inc
6.8%
view
B
2014-12-10 13:32:44.0
ALEXION PHARMACEUTICALS INC
ALXN
PRICE T ROWE ASSOCIATES INC
10.0%
view
B
2014-02-14 06:45:03.0
ALEXION PHARMACEUTICALS INC
ALXN
FMR LLC
10.052%
view
B
2014-02-12 21:38:25.0
ALEXION PHARMACEUTICALS INC
ALXN
Capital Research Global Investors
12.1%
view
B
2014-02-07 13:46:42.0
ALEXION PHARMACEUTICALS INC
ALXN
PRICE T ROWE ASSOCIATES INC
7.5%
view
S
2014-02-07 10:32:50.0
ALEXION PHARMACEUTICALS INC
ALXN
PRUDENTIAL FINANCIAL INC
n/a
view
S
2014-02-07 09:00:13.0
ALEXION PHARMACEUTICALS INC
ALXN
WESTFIELD CAPITAL MANAGEMENT CO LP
0.0%
view
S
2014-02-06 15:58:03.0
ALEXION PHARMACEUTICALS INC
ALXN
JENNISON ASSOCIATES LLC
4.3%
view
S
2014-01-28 10:57:38.0
ALEXION PHARMACEUTICALS INC
ALXN
BlackRock Inc
6.2%
view
B
2013-03-08 12:42:05.0
ALEXION PHARMACEUTICALS INC
ALXN
Capital Research Global Investors
10.8%
view
S
2013-02-14 13:36:56.0
ALEXION PHARMACEUTICALS INC
ALXN
FMR LLC
7.696%
view
B
2013-02-13 15:04:42.0
ALEXION PHARMACEUTICALS INC
ALXN
PRUDENTIAL FINANCIAL INC
5.4%
view
B
2013-02-12 16:37:48.0
ALEXION PHARMACEUTICALS INC
ALXN
Capital Research Global Investors
9.5%
view
B
2013-02-11 15:08:20.0
ALEXION PHARMACEUTICALS INC
ALXN
JENNISON ASSOCIATES LLC
5.2%
view
B
2013-02-08 10:54:35.0
ALEXION PHARMACEUTICALS INC
ALXN
PRICE T ROWE ASSOCIATES INC
0.0%
view
B
2013-02-06 09:54:37.0
ALEXION PHARMACEUTICALS INC
ALXN
BlackRock Inc
6.85%
view
B
2012-02-14 12:03:18.0
ALEXION PHARMACEUTICALS INC
ALXN
FMR LLC
11.49%
view
B
2012-02-13 21:29:59.0
ALEXION PHARMACEUTICALS INC
ALXN
Capital Research Global Investors
7.2%
view
B
2012-02-13 12:28:24.0
ALEXION PHARMACEUTICALS INC
ALXN
PRICE T ROWE ASSOCIATES INC
0.0%
view
S
2012-02-13 12:28:19.0
ALEXION PHARMACEUTICALS INC
ALXN
Invus Public Equities
4.0%
view
B
2012-02-09 09:58:44.0
ALEXION PHARMACEUTICALS INC
ALXN
BlackRock Inc
5.35%
view
S
2011-09-09 16:55:12.0
ALEXION PHARMACEUTICALS INC
ALXN
BlackRock Inc
4.95%
view
S
2011-07-11 13:49:25.0
ALEXION PHARMACEUTICALS INC
ALXN
FMR LLC
9.653%
view
B
2011-02-11 13:46:36.0
ALEXION PHARMACEUTICALS INC
ALXN
Capital Research Global Investors
5.1%
view
S
2011-02-10 15:32:32.0
ALEXION PHARMACEUTICALS INC
ALXN
PRICE T ROWE ASSOCIATES INC
6.7%
view
S
2011-02-10 14:36:02.0
ALEXION PHARMACEUTICALS INC
ALXN
COLUMBIA WANGER ASSET MANAGEMENT LLC
n/a
view
B
2011-02-03 12:40:02.0
ALEXION PHARMACEUTICALS INC
ALXN
BlackRock Inc
6.03%
view
B
2010-02-16 12:45:45.0
ALEXION PHARMACEUTICALS INC
ALXN
FMR LLC
14.791%
view
S
2010-02-12 13:02:30.0
ALEXION PHARMACEUTICALS INC
ALXN
PRICE T ROWE ASSOCIATES INC
7.1%
view
S
2010-02-09 14:50:20.0
ALEXION PHARMACEUTICALS INC
ALXN
BlackRock Inc
4.68%
view
S
2010-02-09 12:00:15.0
ALEXION PHARMACEUTICALS INC
ALXN
COLUMBIA WANGER ASSET MANAGEMENT LP
5.2%
view
B
2010-01-29 14:11:50.0
ALEXION PHARMACEUTICALS INC
ALXN
BlackRock Inc
5.03%
view
S
2009-02-17 09:53:28.0
ALEXION PHARMACEUTICALS INC
LAXN
DAVIDSON KEMPNER PARTNERS
0.0%
view
S
2009-02-11 12:49:41.0
ALEXION PHARMACEUTICALS INC
LAXN
PRICE T ROWE ASSOCIATES INC
8.6%
view
B
2009-02-05 10:25:29.0
ALEXION PHARMACEUTICALS INC
LAXN
COLUMBIA WANGER ASSET MANAGEMENT LP
5.25%
view
S
2009-02-04 09:37:30.0
ALEXION PHARMACEUTICALS INC
LAXN
WESTFIELD CAPITAL MANAGEMENT CO LP
4.84%
view
S
2008-05-08 21:51:00.0
ALEXION PHARMACEUTICALS INC
LAXN
MILLENCO
4.9%
view
B
2008-03-10 14:33:46.0
ALEXION PHARMACEUTICALS INC
LAXN
PRICE T ROWE ASSOCIATES INC
10.4%
view
B
2008-02-25 11:36:11.0
ALEXION PHARMACEUTICALS INC
LAXN
DAVIDSON KEMPNER PARTNERS
5.1%
view
S
2008-02-14 16:18:23.0
ALEXION PHARMACEUTICALS INC
LAXN
FMR LLC
n/a
view
S
2008-02-14 08:21:53.0
ALEXION PHARMACEUTICALS INC
LAXN
DAVIDSON KEMPNER PARTNERS
4.6%
view
S
2008-02-13 18:46:57.0
ALEXION PHARMACEUTICALS INC
LAXN
BROOKSIDE CAPITAL PARTNERS FUND LP
2.71%
view
B
2008-02-13 16:29:52.0
ALEXION PHARMACEUTICALS INC
LAXN
CITADEL INVESTMENT GROUP LLC
3.2%
view
S
2008-02-13 15:21:42.0
ALEXION PHARMACEUTICALS INC
LAXN
SECTORAL ASSET MANAGEMENT INC
4.0%
view
S
2008-02-12 21:27:06.0
ALEXION PHARMACEUTICALS INC
LAXN
PRICE T ROWE ASSOCIATES INC
7.3%
view
B
2008-02-11 15:23:37.0
Graham Holdings Co
GHC
DIMENSIONAL FUND ADVISORS LP
7.59%
view
B
2020-02-12 08:02:50.0
Graham Holdings Co
GHC
FIDUCIARY MANAGEMENT INC
12.0%
view
B
2020-02-05 11:45:18.0
Graham Holdings Co
GHC
GRAHAM DONALD
2.59%
view
B
2019-02-14 12:59:38.0
Graham Holdings Co
GHC
VANGUARD GROUP INC
8.81%
view
B
2019-02-08 07:54:49.0
Graham Holdings Co
GHC
BlackRock Inc
9.1%
view
S
2018-03-19 17:10:56.0
Graham Holdings Co
GHC
SOUTHEASTERN ASSET MANAGEMENT INC
15.1%
view
B
2018-02-09 08:30:35.0
Graham Holdings Co
GHC
VANGUARD GROUP INC
7.99%
view
S
2018-01-25 11:12:20.0
Graham Holdings Co
GHC
VAN ECK ASSOCIATES CORP
0.0%
view
B
2017-04-07 12:14:53.0
Graham Holdings Co
GHC
SOUTHEASTERN ASSET MANAGEMENT INC
16.5%
view
B
2017-02-13 16:38:22.0
Graham Holdings Co
GHC
VANGUARD GROUP INC
7.15%
view
B
2017-02-10 10:37:05.0
Graham Holdings Co
GHC
BlackRock Inc
7.4%
view
B
2016-02-12 17:36:10.0
Graham Holdings Co
GHC
VANGUARD GROUP INC
6.19%
view
B
2016-02-10 11:06:49.0
Graham Holdings Co
GHC
BlackRock Inc
5.7%
view
B
2015-11-12 17:35:52.0
Graham Holdings Co
GHC
GRAHAM DONALD
19.27%
view
S
2015-06-12 16:37:34.0
Graham Holdings Co
GHC
GRAHAM DONALD
20.4%
view
S
2015-02-13 16:07:01.0
Graham Holdings Co
GHC
International Value Advisers
2.3%
view
B
2015-02-13 09:59:07.0
Graham Holdings Co
GHC
VANGUARD GROUP INC
5.31%
view
B
2015-02-03 13:35:31.0
Graham Holdings Co
GHC
SOUTHEASTERN ASSET MANAGEMENT INC
16.5%
view
S
2014-08-08 16:01:18.0
Graham Holdings Co
GHC
GRAHAM DONALD
22.2%
view
B
2014-07-01 16:15:08.0
Graham Holdings Co
WPO
BERKSHIRE HATHAWAY INC
27.7%
view
S
2014-03-12 09:34:06.0
Graham Holdings Co
WPO
International Value Advisers
2.4%
view
S
2014-02-12 16:21:06.0
Graham Holdings Co
WPO
SOUTHEASTERN ASSET MANAGEMENT INC
8.7%
view
B
2013-07-26 17:10:09.0
WASHINGTON POST CO
WPO
SOUTHEASTERN ASSET MANAGEMENT INC
8.9%
view
B
2013-02-13 13:28:33.0
WASHINGTON POST CO
WPO
International Value Advisers
8.16%
view
S
2012-02-07 15:15:03.0
WASHINGTON POST CO
WPO
MANNING & NAPIER ADVISORS LLC
2.979134%
view
B
2011-06-17 16:27:46.0
WASHINGTON POST CO
WPO
International Value Advisers
5.15%
view
B
2011-02-11 11:39:02.0
WASHINGTON POST CO
WPO
SOUTHEASTERN ASSET MANAGEMENT INC
5.4%
view
S
2010-08-27 16:59:16.0
WASHINGTON POST CO
WPO
GRAHAM DONALD
4.8%
view
S
2010-02-05 13:33:08.0
WASHINGTON POST CO
WPO
SOUTHEASTERN ASSET MANAGEMENT INC
33.8%
view
B
2009-02-12 17:03:56.0
WASHINGTON POST CO
WPO
HARRIS ASSOCIATES L P
5.4%
view
S
2009-01-15 16:11:15.0
WASHINGTON POST CO
WPO
J P MORGAN CHASE & CO
5.75%
view
S
2008-01-29 16:10:09.0
WASHINGTON POST CO
WPO
J P MORGAN CHASE & CO
5.0%
view
S
2007-02-14 12:01:19.0
WASHINGTON POST CO
WPO
HARRIS ASSOCIATES L P
5.99%
view
S
2007-01-31 14:30:26.0
WASHINGTON POST CO
WPO
FRANKLIN MUTUAL ADVISERS LLC
n/a
view
S
2006-02-10 00:00:00.0
WASHINGTON POST CO
WPO
J P MORGAN CHASE & CO
5.8%
view
S
2005-05-17 00:00:00.0
WASHINGTON POST CO
WPO
SELECT EQUITY GROUP INC
5.02%
view
B
2005-02-10 00:00:00.0
WASHINGTON POST CO
WPO
J P MORGAN CHASE & CO
5.1%
view
S
2004-02-09 00:00:00.0
WASHINGTON POST CO
WPO
FRANKLIN MUTUAL ADVISERS LLC
7.1%
view
S
2003-01-30 00:00:00.0
WASHINGTON POST CO
WPO
FRANKLIN MUTUAL ADVISERS LLC
6.8%
view
S
2002-02-13 00:00:00.0
WASHINGTON POST CO
WPO
J P MORGAN CHASE & CO
8.1%
view
B
2001-09-26 00:00:00.0
WASHINGTON POST CO
WPO
GRAHAM DONALD
37.2%
view
B
2001-09-10 00:00:00.0
WASHINGTON POST CO
WPO
GRAHAM DONALD
39.6%
view
B
2001-04-03 00:00:00.0
WASHINGTON POST CO
WPO
GRAHAM KATHARINE
35.1%
view
* Institutions do not report transaction buy/sell types directly. To help members better understand the transactions, this column is filled by InsiderCow's best-effort interpretations.