ALEXION PHARMACEUTICALS, INC. SEC EDGAR Filings (CIK 0000899866)

SEC EDGAR filings, ownership reports, and insider transactions for ALEXION PHARMACEUTICALS, INC..

Industry
Pharmaceutical Preparations (Office Of Life Sciences)
Business address
121 Seaport Boulevard, Boston, MA, 02210
State of incorporation
DE
Fiscal year end
31 December
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ALEXION PHARMACEUTICALS, INC. has filed 2,112 SEC EDGAR filings since 13 Jun 1996

Latest Filings

Recent SEC filings for ALEXION PHARMACEUTICALS, INC. including SC TO-T/A, SC TO-T, SC TO-C and more.

Form type Document Filing Description Filing date Reporting date File number(s)
SC TO-T/A Open SC TO-T/A document View SEC filing for SC TO-T/A SC TO-T/A 16 Nov 2022
SC TO-T Open SC TO-T document View SEC filing for SC TO-T SC TO-T 18 Oct 2022
SC TO-C Open SC TO-C document View SEC filing for SC TO-C SC TO-C 03 Oct 2022
SC 13G/A Open SC 13G/A document View SEC filing for SC 13G/A 09 Aug 2021 005-47771
15-12G Open 15-12G document View SEC filing for 15-12G 15-12G 02 Aug 2021 000-27756
EFFECT Open EFFECT document View SEC filing for EFFECT 23 Jul 2021 333-59702
EFFECT Open EFFECT document View SEC filing for EFFECT 23 Jul 2021 333-52886
EFFECT Open EFFECT document View SEC filing for EFFECT 23 Jul 2021 333-47645
EFFECT Open EFFECT document View SEC filing for EFFECT 23 Jul 2021 333-41397
EFFECT Open EFFECT document View SEC filing for EFFECT 23 Jul 2021 333-36738
EFFECT Open EFFECT document View SEC filing for EFFECT 23 Jul 2021 333-29617
EFFECT Open EFFECT document View SEC filing for EFFECT 23 Jul 2021 333-226838
EFFECT Open EFFECT document View SEC filing for EFFECT 23 Jul 2021 333-204426
EFFECT Open EFFECT document View SEC filing for EFFECT 23 Jul 2021 333-123828
4 Open 4 document View SEC filing for 4 FORM 4 23 Jul 2021 21 Jul 2021
4 Open 4 document View SEC filing for 4 FORM 4 23 Jul 2021 21 Jul 2021
4 Open 4 document View SEC filing for 4 FORM 4 23 Jul 2021 21 Jul 2021
4 Open 4 document View SEC filing for 4 FORM 4 23 Jul 2021 21 Jul 2021
4 Open 4 document View SEC filing for 4 FORM 4 23 Jul 2021 21 Jul 2021
4 Open 4 document View SEC filing for 4 FORM 4 23 Jul 2021 21 Jul 2021
4 Open 4 document View SEC filing for 4 FORM 4 23 Jul 2021 21 Jul 2021
4 Open 4 document View SEC filing for 4 FORM 4 23 Jul 2021 21 Jul 2021
4 Open 4 document View SEC filing for 4 FORM 4 23 Jul 2021 21 Jul 2021
4 Open 4 document View SEC filing for 4 FORM 4 23 Jul 2021 21 Jul 2021
4 Open 4 document View SEC filing for 4 FORM 4 23 Jul 2021 21 Jul 2021
4 Open 4 document View SEC filing for 4 FORM 4 23 Jul 2021 21 Jul 2021
4 Open 4 document View SEC filing for 4 FORM 4 23 Jul 2021 21 Jul 2021
4 Open 4 document View SEC filing for 4 FORM 4 23 Jul 2021 21 Jul 2021
4 Open 4 document View SEC filing for 4 FORM 4 23 Jul 2021 21 Jul 2021
4 Open 4 document View SEC filing for 4 FORM 4 23 Jul 2021 21 Jul 2021
S-8 POS Open S-8 POS document View SEC filing for S-8 POS S-8 POS 22 Jul 2021 333-139600
POS AM Open POS AM document View SEC filing for POS AM S-3 22 Jul 2021 333-226838
POS AM Open POS AM document View SEC filing for POS AM POS AM 22 Jul 2021 333-123828
POS AM Open POS AM document View SEC filing for POS AM POS AM 22 Jul 2021 333-59702
POS AM Open POS AM document View SEC filing for POS AM POS AM 22 Jul 2021 333-52886
POS AM Open POS AM document View SEC filing for POS AM POS AM 22 Jul 2021 333-36738
POS AM Open POS AM document View SEC filing for POS AM POS AM 22 Jul 2021 333-47645
POS AM Open POS AM document View SEC filing for POS AM FORM S-3 22 Jul 2021 333-41397
POS AM Open POS AM document View SEC filing for POS AM POS AM 22 Jul 2021 333-29617
POS AM Open POS AM document View SEC filing for POS AM POS AM 22 Jul 2021 333-204426
S-8 POS Open S-8 POS document View SEC filing for S-8 POS FORM S-8 22 Jul 2021 333-24863
S-8 POS Open S-8 POS document View SEC filing for S-8 POS S-8 POS 22 Jul 2021 333-71879
S-8 POS Open S-8 POS document View SEC filing for S-8 POS S-8 POS 22 Jul 2021 333-71985
S-8 POS Open S-8 POS document View SEC filing for S-8 POS S-8 POS 22 Jul 2021 333-52856
S-8 POS Open S-8 POS document View SEC filing for S-8 POS S-8 POS 22 Jul 2021 333-69478
S-8 POS Open S-8 POS document View SEC filing for S-8 POS S-8 POS 22 Jul 2021 333-106854
S-8 POS Open S-8 POS document View SEC filing for S-8 POS S-8 POS 22 Jul 2021 333-119749
S-8 POS Open S-8 POS document View SEC filing for S-8 POS S-8 POS 22 Jul 2021 333-204426
S-8 POS Open S-8 POS document View SEC filing for S-8 POS S-8 POS 22 Jul 2021 333-217905
S-8 POS Open S-8 POS document View SEC filing for S-8 POS S-8 POS 22 Jul 2021 333-123212
S-8 POS Open S-8 POS document View SEC filing for S-8 POS S-8 POS 22 Jul 2021 333-146319
S-8 POS Open S-8 POS document View SEC filing for S-8 POS S-8 POS 22 Jul 2021 333-153612
S-8 POS Open S-8 POS document View SEC filing for S-8 POS S-8 POS 22 Jul 2021 333-205379
S-8 POS Open S-8 POS document View SEC filing for S-8 POS S-8 POS 22 Jul 2021 333-240210
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K FORM 8-K 22 Jul 2021 21 Jul 2021 000-27756
25-NSE Open 25-NSE document View SEC filing for 25-NSE 21 Jul 2021 000-27756
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 20 Jul 2021 20 Jul 2021 000-27756
4 Open 4 document View SEC filing for 4 FORM 4 16 Jul 2021 14 Jul 2021
4 Open 4 document View SEC filing for 4 FORM 4 16 Jul 2021 14 Jul 2021
4 Open 4 document View SEC filing for 4 FORM 4 16 Jul 2021 14 Jul 2021
4 Open 4 document View SEC filing for 4 FORM 4 16 Jul 2021 14 Jul 2021
4 Open 4 document View SEC filing for 4 FORM 4 16 Jul 2021 14 Jul 2021
4 Open 4 document View SEC filing for 4 FORM 4 16 Jul 2021 14 Jul 2021
4 Open 4 document View SEC filing for 4 FORM 4 16 Jul 2021 14 Jul 2021
4 Open 4 document View SEC filing for 4 FORM 4 16 Jul 2021 14 Jul 2021
425 Open 425 document View SEC filing for 425 425 14 Jul 2021 000-27756
425 Open 425 document View SEC filing for 425 425 14 Jul 2021 000-27756
425 Open 425 document View SEC filing for 425 425 06 Jul 2021 000-27756
425 Open 425 document View SEC filing for 425 425 06 Jul 2021 000-27756
425 Open 425 document View SEC filing for 425 425 30 Jun 2021 000-27756
4 Open 4 document View SEC filing for 4 FORM 4 09 Jun 2021 08 Jun 2021
4 Open 4 document View SEC filing for 4 FORM 4 09 Jun 2021 08 Jun 2021
4 Open 4 document View SEC filing for 4 FORM 4 09 Jun 2021 08 Jun 2021
425 Open 425 document View SEC filing for 425 425 04 Jun 2021 000-27756
425 Open 425 document View SEC filing for 425 425 04 Jun 2021 000-27756
425 Open 425 document View SEC filing for 425 425 27 May 2021 000-27756
4 Open 4 document View SEC filing for 4 FORM 4 24 May 2021 20 May 2021
4 Open 4 document View SEC filing for 4 FORM 4 24 May 2021 20 May 2021
4 Open 4 document View SEC filing for 4 FORM 4 24 May 2021 20 May 2021
4 Open 4 document View SEC filing for 4 FORM 4 24 May 2021 20 May 2021
4 Open 4 document View SEC filing for 4 FORM 4 24 May 2021 20 May 2021
4 Open 4 document View SEC filing for 4 FORM 4 24 May 2021 20 May 2021
4 Open 4 document View SEC filing for 4 FORM 4 24 May 2021 20 May 2021
4 Open 4 document View SEC filing for 4 FORM 4 24 May 2021 20 May 2021
425 Open 425 document View SEC filing for 425 425 24 May 2021 000-27756
425 Open 425 document View SEC filing for 425 425 13 May 2021 000-27756
8-K/A Open 8-K/A document | Open XBRL data View SEC filing for 8-K/A 8-K/A 13 May 2021 11 May 2021 000-27756
425 Open 425 document View SEC filing for 425 425 11 May 2021 000-27756
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 11 May 2021 11 May 2021 000-27756
425 Open 425 document View SEC filing for 425 425 07 May 2021 000-27756
425 Open 425 document View SEC filing for 425 425 07 May 2021 000-27756
425 Open 425 document View SEC filing for 425 425 06 May 2021 000-27756
425 Open 425 document View SEC filing for 425 425 05 May 2021 000-27756
425 Open 425 document View SEC filing for 425 425 04 May 2021 000-27756
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 04 May 2021 04 May 2021 000-27756
425 Open 425 document View SEC filing for 425 425 30 Apr 2021 000-27756
425 Open 425 document View SEC filing for 425 425 30 Apr 2021 000-27756
425 Open 425 document View SEC filing for 425 425 30 Apr 2021 000-27756
425 Open 425 document View SEC filing for 425 425 30 Apr 2021 000-27756
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 30 Apr 2021 31 Mar 2021 000-27756
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 30 Apr 2021 30 Apr 2021 000-27756
425 Open 425 document View SEC filing for 425 425 29 Apr 2021 000-27756
425 Open 425 document View SEC filing for 425 425 20 Apr 2021 000-27756
425 Open 425 document View SEC filing for 425 425 16 Apr 2021 000-27756
425 Open 425 document View SEC filing for 425 425 16 Apr 2021 000-27756
425 Open 425 document View SEC filing for 425 425 16 Apr 2021 000-27756
DEFM14A Open DEFM14A document View SEC filing for DEFM14A DEFM14A 13 Apr 2021 000-27756
425 Open 425 document View SEC filing for 425 425 12 Apr 2021 000-27756
425 Open 425 document View SEC filing for 425 425 12 Apr 2021 000-27756
425 Open 425 document View SEC filing for 425 425 01 Apr 2021 000-27756
425 Open 425 document View SEC filing for 425 425 01 Apr 2021 000-27756
425 Open 425 document View SEC filing for 425 425 01 Apr 2021 000-27756
425 Open 425 document View SEC filing for 425 425 01 Apr 2021 000-27756
425 Open 425 document View SEC filing for 425 425 01 Apr 2021 000-27756
425 Open 425 document View SEC filing for 425 425 01 Apr 2021 000-27756
4 Open 4 document View SEC filing for 4 FORM 4 01 Apr 2021 29 Mar 2021
425 Open 425 document View SEC filing for 425 425 18 Mar 2021 000-27756
425 Open 425 document View SEC filing for 425 425 15 Mar 2021 000-27756
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K FORM 8-K 15 Mar 2021 12 Mar 2021 000-27756
425 Open 425 document View SEC filing for 425 425 12 Mar 2021 000-27756
425 Open 425 document View SEC filing for 425 425 11 Mar 2021 000-27756
4 Open 4 document View SEC filing for 4 FORM 4 02 Mar 2021 28 Feb 2021
4 Open 4 document View SEC filing for 4 FORM 4 02 Mar 2021 28 Feb 2021
4 Open 4 document View SEC filing for 4 FORM 4 02 Mar 2021 28 Feb 2021
4 Open 4 document View SEC filing for 4 FORM 4 02 Mar 2021 28 Feb 2021
4 Open 4 document View SEC filing for 4 FORM 4 02 Mar 2021 28 Feb 2021
4 Open 4 document View SEC filing for 4 FORM 4 02 Mar 2021 28 Feb 2021
4 Open 4 document View SEC filing for 4 FORM 4 02 Mar 2021 28 Feb 2021
4 Open 4 document View SEC filing for 4 FORM 4 02 Mar 2021 28 Feb 2021
425 Open 425 document View SEC filing for 425 425 26 Feb 2021 000-27756
425 Open 425 document View SEC filing for 425 425 25 Feb 2021 000-27756
425 Open 425 document View SEC filing for 425 425 25 Feb 2021 000-27756
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 16 Feb 2021 16 Feb 2021 000-27756
SC 13G/A Open SC 13G/A document View SEC filing for SC 13G/A 16 Feb 2021 005-47771
UPLOAD Open UPLOAD document View SEC filing for UPLOAD 16 Feb 2021
10-K/A Open 10-K/A document | Open XBRL data View SEC filing for 10-K/A 10-K/A 16 Feb 2021 31 Dec 2020 000-27756
425 Open 425 document View SEC filing for 425 425 12 Feb 2021 000-27756
SC 13G/A Open SC 13G/A document View SEC filing for SC 13G/A 12 Feb 2021 005-47771
425 Open 425 document View SEC filing for 425 425 11 Feb 2021 000-27756
425 Open 425 document View SEC filing for 425 425 11 Feb 2021 000-27756
425 Open 425 document View SEC filing for 425 425 11 Feb 2021 000-27756
425 Open 425 document View SEC filing for 425 425 11 Feb 2021 000-27756
SC 13G/A Open SC 13G/A document View SEC filing for SC 13G/A SCHEDULE 13G/A 10 Feb 2021 005-47771
SC 13G/A Open SC 13G/A document View SEC filing for SC 13G/A 08 Feb 2021 005-47771
10-K Open 10-K document | Open XBRL data View SEC filing for 10-K 10-K 08 Feb 2021 31 Dec 2020 000-27756
SC 13G/A Open SC 13G/A document View SEC filing for SC 13G/A 05 Feb 2021 005-47771
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 04 Feb 2021 04 Feb 2021 000-27756
425 Open 425 document View SEC filing for 425 425 02 Feb 2021 000-27756
425 Open 425 document View SEC filing for 425 425 25 Jan 2021 000-27756
425 Open 425 document View SEC filing for 425 425 14 Jan 2021 000-27756
425 Open 425 document View SEC filing for 425 425 12 Jan 2021 000-27756
425 Open 425 document View SEC filing for 425 425 12 Jan 2021 000-27756
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K FORM 8-K 12 Jan 2021 12 Jan 2021 000-27756
CORRESP Open CORRESP document View SEC filing for CORRESP 07 Jan 2021
UPLOAD Open UPLOAD document View SEC filing for UPLOAD 22 Dec 2020
4 Open 4 document View SEC filing for 4 FORM 4 21 Dec 2020 17 Dec 2020
4 Open 4 document View SEC filing for 4 FORM 4 18 Dec 2020 16 Dec 2020
4 Open 4 document View SEC filing for 4 FORM 4 18 Dec 2020 16 Dec 2020
4 Open 4 document View SEC filing for 4 FORM 4 18 Dec 2020 16 Dec 2020
4 Open 4 document View SEC filing for 4 FORM 4 18 Dec 2020 16 Dec 2020
425 Open 425 document View SEC filing for 425 425 18 Dec 2020 000-27756
4 Open 4 document View SEC filing for 4 FORM 4 18 Dec 2020 16 Dec 2020
4 Open 4 document View SEC filing for 4 FORM 4 18 Dec 2020 16 Dec 2020
4 Open 4 document View SEC filing for 4 FORM 4 18 Dec 2020 16 Dec 2020
425 Open 425 document View SEC filing for 425 425 18 Dec 2020 000-27756
425 Open 425 document View SEC filing for 425 425 17 Dec 2020 000-27756
425 Open 425 document View SEC filing for 425 425 17 Dec 2020 000-27756
425 Open 425 document View SEC filing for 425 425 17 Dec 2020 000-27756
425 Open 425 document View SEC filing for 425 425 15 Dec 2020 000-27756
425 Open 425 document View SEC filing for 425 FORM 425 14 Dec 2020 000-27756
425 Open 425 document View SEC filing for 425 425 14 Dec 2020 000-27756
425 Open 425 document View SEC filing for 425 425 14 Dec 2020 000-27756
425 Open 425 document View SEC filing for 425 425 14 Dec 2020 000-27756
425 Open 425 document View SEC filing for 425 425 14 Dec 2020 000-27756
425 Open 425 document View SEC filing for 425 425 14 Dec 2020 000-27756
425 Open 425 document View SEC filing for 425 425 14 Dec 2020 000-27756
425 Open 425 document View SEC filing for 425 FORM 425 14 Dec 2020 000-27756
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K FORM 8-K 14 Dec 2020 12 Dec 2020 000-27756
4 Open 4 document View SEC filing for 4 FORM 4 04 Dec 2020 02 Dec 2020
4 Open 4 document View SEC filing for 4 FORM 4 01 Dec 2020 30 Nov 2020
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 29 Oct 2020 30 Sep 2020 000-27756
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 29 Oct 2020 29 Oct 2020 000-27756
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 01 Oct 2020 26 Sep 2020 000-27756
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 25 Aug 2020 21 Aug 2020 000-27756
S-8 Open S-8 document View SEC filing for S-8 FORM S-8 30 Jul 2020 333-240210
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 30 Jul 2020 30 Jun 2020 000-27756
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 30 Jul 2020 30 Jul 2020 000-27756
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 28 Jul 2020 28 Jul 2020 001-39397
3 Open 3 document View SEC filing for 3 FORM 3 SUBMISSION 23 Jul 2020 23 Jul 2020 001-39397
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K FORM 8-K 02 Jul 2020 02 Jul 2020 000-27756
SC TO-T/A Open SC TO-T/A document View SEC filing for SC TO-T/A SC TO-T/A 02 Jul 2020
SC TO-T/A Open SC TO-T/A document View SEC filing for SC TO-T/A SC TO-T/A 25 Jun 2020
SC TO-T/A Open SC TO-T/A document View SEC filing for SC TO-T/A SC TO-T/A 24 Jun 2020
SC TO-T/A Open SC TO-T/A document View SEC filing for SC TO-T/A SC TO-T/A 15 Jun 2020
4 Open 4 document View SEC filing for 4 FORM 4 09 Jun 2020 08 Jun 2020
4 Open 4 document View SEC filing for 4 FORM 4 09 Jun 2020 08 Jun 2020
4 Open 4 document View SEC filing for 4 FORM 4 09 Jun 2020 08 Jun 2020
4 Open 4 document View SEC filing for 4 FORM 4 09 Jun 2020 08 Jun 2020
CORRESP Open CORRESP document View SEC filing for CORRESP 05 Jun 2020
SC TO-T/A Open SC TO-T/A document View SEC filing for SC TO-T/A SC TO-T/A 05 Jun 2020
8-K/A Open 8-K/A document | Open XBRL data View SEC filing for 8-K/A 8-K/A 03 Jun 2020 29 May 2020 000-27756
SC TO-T/A Open SC TO-T/A document View SEC filing for SC TO-T/A SC TO-T/A 01 Jun 2020
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 29 May 2020 29 May 2020 000-27756
SC TO-T Open SC TO-T document View SEC filing for SC TO-T SC TO-T 27 May 2020
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 19 May 2020 19 May 2020 000-27756
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 18 May 2020 14 May 2020
4 Open 4 document View SEC filing for 4 FORM 4 18 May 2020 14 May 2020
4 Open 4 document View SEC filing for 4 FORM 4 18 May 2020 14 May 2020
4 Open 4 document View SEC filing for 4 FORM 4 18 May 2020 14 May 2020
4 Open 4 document View SEC filing for 4 FORM 4 18 May 2020 14 May 2020
4 Open 4 document View SEC filing for 4 FORM 4 18 May 2020 14 May 2020
4 Open 4 document View SEC filing for 4 FORM 4 18 May 2020 14 May 2020
4 Open 4 document View SEC filing for 4 FORM 4 18 May 2020 14 May 2020
4 Open 4 document View SEC filing for 4 FORM 4 18 May 2020 14 May 2020
SC TO-C Open SC TO-C document View SEC filing for SC TO-C SC TO-C 07 May 2020
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K FORM 8-K 07 May 2020 05 May 2020 000-27756
SC TO-C Open SC TO-C document View SEC filing for SC TO-C SC TO-C 07 May 2020
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 06 May 2020 31 Mar 2020 000-27756
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 06 May 2020 06 May 2020 000-27756
SC TO-C Open SC TO-C document View SEC filing for SC TO-C SC TO-C 06 May 2020
SC TO-C Open SC TO-C document View SEC filing for SC TO-C SC TO-C 05 May 2020
SC TO-C Open SC TO-C document View SEC filing for SC TO-C SCHEDULE TO-C 05 May 2020
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K FORM 8-K 05 May 2020 05 May 2020 000-27756
DEFA14A Open DEFA14A document View SEC filing for DEFA14A DEFA14A 09 Apr 2020 000-27756
CT ORDER Open CT ORDER document View SEC filing for CT ORDER 06 Apr 2020 000-27756
4 Open 4 document View SEC filing for 4 FORM 4 31 Mar 2020 30 Mar 2020
DEFA14A Open DEFA14A document View SEC filing for DEFA14A DEFA14A 26 Mar 2020 000-27756
DEF 14A Open DEF 14A document View SEC filing for DEF 14A DEF 14A 26 Mar 2020 31 Dec 2019 000-27756
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 18 Mar 2020 18 Mar 2020
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 18 Mar 2020 16 Mar 2020
4 Open 4 document View SEC filing for 4 FORM 4 03 Mar 2020 28 Feb 2020
4 Open 4 document View SEC filing for 4 FORM 4 03 Mar 2020 28 Feb 2020
4 Open 4 document View SEC filing for 4 FORM 4 03 Mar 2020 28 Feb 2020
4 Open 4 document View SEC filing for 4 FORM 4 03 Mar 2020 28 Feb 2020
4 Open 4 document View SEC filing for 4 FORM 4 03 Mar 2020 28 Feb 2020
4 Open 4 document View SEC filing for 4 FORM 4 03 Mar 2020 28 Feb 2020
4 Open 4 document View SEC filing for 4 FORM 4 03 Mar 2020 28 Feb 2020
4 Open 4 document View SEC filing for 4 FORM 4 03 Mar 2020 28 Feb 2020
4 Open 4 document View SEC filing for 4 FORM 4 03 Mar 2020 28 Feb 2020
4 Open 4 document View SEC filing for 4 FORM 4 02 Mar 2020 27 Feb 2020
SC 13G/A Open SC 13G/A document View SEC filing for SC 13G/A 14 Feb 2020 005-47771
SC 13G Open SC 13G document View SEC filing for SC 13G 13 Feb 2020 005-47771
SC 13G/A Open SC 13G/A document View SEC filing for SC 13G/A SCHEDULE 13G/A 12 Feb 2020 005-47771
4 Open 4 document View SEC filing for 4 FORM 4 10 Feb 2020 07 Feb 2020
4 Open 4 document View SEC filing for 4 FORM 4 10 Feb 2020 07 Feb 2020
4 Open 4 document View SEC filing for 4 FORM 4 10 Feb 2020 07 Feb 2020
4 Open 4 document View SEC filing for 4 FORM 4 10 Feb 2020 07 Feb 2020
SC 13G/A Open SC 13G/A document View SEC filing for SC 13G/A 05 Feb 2020 005-47771
10-K Open 10-K document | Open XBRL data View SEC filing for 10-K 10-K 04 Feb 2020 31 Dec 2019 000-27756
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 30 Jan 2020 30 Jan 2020 000-27756
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 28 Jan 2020 28 Jan 2020 000-27756
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 13 Jan 2020 13 Jan 2020 000-27756
SC 13G/A Open SC 13G/A document View SEC filing for SC 13G/A 10 Jan 2020 005-47771
4 Open 4 document View SEC filing for 4 FORM 4 04 Dec 2019 02 Dec 2019
3/A Open 3/A document View SEC filing for 3/A FORM 3/A 04 Dec 2019 19 Feb 2019
4 Open 4 document View SEC filing for 4 FORM 4 04 Dec 2019 02 Dec 2019
4 Open 4 document View SEC filing for 4 FORM 4 02 Dec 2019 29 Nov 2019
3 Open 3 document View SEC filing for 3 FORM 3 05 Nov 2019 04 Nov 2019
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 23 Oct 2019 30 Sep 2019 000-27756
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 23 Oct 2019 23 Oct 2019 000-27756
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 21 Oct 2019 21 Oct 2019 000-27756
DEFA14A Open DEFA14A document View SEC filing for DEFA14A DEFA14A 16 Oct 2019 000-27756
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 16 Oct 2019 15 Oct 2019 000-27756
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 17 Sep 2019 17 Sep 2019 000-27756
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 090519 05 Sep 2019 05 Sep 2019 000-27756
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 24 Jul 2019 30 Jun 2019 000-27756
8-K Open 8-K document | Open XBRL data View SEC filing for 8-K 8-K 24 Jul 2019 24 Jul 2019 000-27756
4 Open 4 document View SEC filing for 4 FORM 4 15 Jul 2019 11 Jul 2019
4 Open 4 document View SEC filing for 4 FORM 4 02 Jul 2019 01 Jul 2019
4 Open 4 document View SEC filing for 4 FORM 4 24 Jun 2019 21 Jun 2019
4 Open 4 document View SEC filing for 4 FORM 4 11 Jun 2019 07 Jun 2019
4 Open 4 document View SEC filing for 4 FORM 4 11 Jun 2019 07 Jun 2019
4 Open 4 document View SEC filing for 4 FORM 4 11 Jun 2019 07 Jun 2019
4 Open 4 document View SEC filing for 4 FORM 4 11 Jun 2019 07 Jun 2019
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 30 May 2019 28 May 2019
4 Open 4 document View SEC filing for 4 PRIMARY DOCUMENT 17 May 2019 15 May 2019
4 Open 4 document View SEC filing for 4 FORM 4 17 May 2019 15 May 2019
4 Open 4 document View SEC filing for 4 FORM 4 17 May 2019 15 May 2019
4 Open 4 document View SEC filing for 4 FORM 4 17 May 2019 15 May 2019
4 Open 4 document View SEC filing for 4 FORM 4 17 May 2019 15 May 2019
4 Open 4 document View SEC filing for 4 FORM 4 17 May 2019 15 May 2019
4 Open 4 document View SEC filing for 4 FORM 4 17 May 2019 15 May 2019
4 Open 4 document View SEC filing for 4 FORM 4 17 May 2019 15 May 2019
4 Open 4 document View SEC filing for 4 FORM 4 17 May 2019 15 May 2019
8-K Open 8-K document View SEC filing for 8-K 8-K 17 May 2019 17 May 2019 000-27756
10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 25 Apr 2019 31 Mar 2019 000-27756
8-K Open 8-K document View SEC filing for 8-K 8-K 25 Apr 2019 25 Apr 2019 000-27756
DEFA14A Open DEFA14A document View SEC filing for DEFA14A DEFA14A 26 Mar 2019 000-27756
DEF 14A Open DEF 14A document View SEC filing for DEF 14A DEF 14A 26 Mar 2019 26 Mar 2019 000-27756
4 Open 4 document View SEC filing for 4 FORM 4 05 Mar 2019 28 Feb 2019
4 Open 4 document View SEC filing for 4 FORM 4 05 Mar 2019 28 Feb 2019
4 Open 4 document View SEC filing for 4 FORM 4 05 Mar 2019 28 Feb 2019
4 Open 4 document View SEC filing for 4 FORM 4 05 Mar 2019 28 Feb 2019
4 Open 4 document View SEC filing for 4 FORM 4 05 Mar 2019 28 Feb 2019
4 Open 4 document View SEC filing for 4 FORM 4 05 Mar 2019 28 Feb 2019
4 Open 4 document View SEC filing for 4 FORM 4 05 Mar 2019 28 Feb 2019
4 Open 4 document View SEC filing for 4 FORM 4 05 Mar 2019 28 Feb 2019
4 Open 4 document View SEC filing for 4 FORM 4 05 Mar 2019 28 Feb 2019
4 Open 4 document View SEC filing for 4 FORM 4 04 Mar 2019 28 Feb 2019
4 Open 4 document View SEC filing for 4 FORM 4 04 Mar 2019 28 Feb 2019
4 Open 4 document View SEC filing for 4 FORM 4 04 Mar 2019 28 Feb 2019
4 Open 4 document View SEC filing for 4 FORM 4 04 Mar 2019 28 Feb 2019
4 Open 4 document View SEC filing for 4 FORM 4 04 Mar 2019 28 Feb 2019
4 Open 4 document View SEC filing for 4 FORM 4 04 Mar 2019 28 Feb 2019
4 Open 4 document View SEC filing for 4 FORM 4 04 Mar 2019 28 Feb 2019
4 Open 4 document View SEC filing for 4 FORM 4 04 Mar 2019 28 Feb 2019
4 Open 4 document View SEC filing for 4 FORM 4 04 Mar 2019 28 Feb 2019
4 Open 4 document View SEC filing for 4 FORM 4 01 Mar 2019 27 Feb 2019
4 Open 4 document View SEC filing for 4 FORM 4 28 Feb 2019 26 Feb 2019
4 Open 4 document View SEC filing for 4 FORM 4 19 Feb 2019 14 Feb 2019
3 Open 3 document View SEC filing for 3 FORM 3 19 Feb 2019 19 Feb 2019
3 Open 3 document View SEC filing for 3 FORM 3 19 Feb 2019 19 Feb 2019
SC 13G/A Open SC 13G/A document View SEC filing for SC 13G/A 14 Feb 2019 005-47771
SC 13G/A Open SC 13G/A document View SEC filing for SC 13G/A 13 Feb 2019 005-47771
SC 13G/A Open SC 13G/A document View SEC filing for SC 13G/A ALEXION PHARMACEUTICALS, INC. 12 Feb 2019 005-47771
4 Open 4 document View SEC filing for 4 FORM 4 11 Feb 2019 07 Feb 2019
4 Open 4 document View SEC filing for 4 FORM 4 11 Feb 2019 07 Feb 2019
4 Open 4 document View SEC filing for 4 FORM 4 11 Feb 2019 07 Feb 2019
4 Open 4 document View SEC filing for 4 FORM 4 11 Feb 2019 07 Feb 2019
SC 13G/A Open SC 13G/A document View SEC filing for SC 13G/A 11 Feb 2019 005-47771
10-K Open 10-K document | Open XBRL data View SEC filing for 10-K FORM 10-K 06 Feb 2019 31 Dec 2018 000-27756
SC 13G/A Open SC 13G/A document View SEC filing for SC 13G/A 04 Feb 2019 005-47771
8-K Open 8-K document View SEC filing for 8-K 8-K 04 Feb 2019 04 Feb 2019 000-27756
4 Open 4 document View SEC filing for 4 FORM 4 03 Jan 2019 31 Dec 2018
8-K Open 8-K document View SEC filing for 8-K 8-K 21 Dec 2018 21 Dec 2018 000-27756
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10-K Open 10-K document | Open XBRL data View SEC filing for 10-K FORM 10-K 08 Feb 2016 31 Dec 2015 000-27756
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RW Open RW document View SEC filing for RW REGISTRATION WITHDRAWAL REQUEST 19 Nov 2015 333-204515
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10-Q Open 10-Q document | Open XBRL data View SEC filing for 10-Q 10-Q 31 Jul 2015 30 Jun 2015 000-27756
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S-8 POS Open S-8 POS document View SEC filing for S-8 POS POST-EFFECTIVE AMENDMENT NO. 1 ON FORM S-8 TO FORM S-4 23 Jun 2015 333-204426
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SC TO-T Open SC TO-T document View SEC filing for SC TO-T SCHEDULE TO 22 May 2015
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SC 13G/A Open SC 13G/A document View SEC filing for SC 13G/A SC 13G/A 13 Feb 2015 005-47771
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4 Open 4 document View SEC filing for 4 FORM 4 09 Feb 2015 05 Feb 2015
4 Open 4 document View SEC filing for 4 FORM 4 09 Feb 2015 05 Feb 2015
4 Open 4 document View SEC filing for 4 FORM 4 09 Feb 2015 05 Feb 2015
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4 Open 4 document View SEC filing for 4 FORM 4 09 Feb 2015 05 Feb 2015
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About this filer

ALEXION PHARMACEUTICALS, INC. files with the SEC under CIK 0000899866. This page aggregates EDGAR filings and related ownership activity.

Industry: Pharmaceutical Preparations.

See insider transactions for this issuer.

FAQ

What is a CIK?
A Central Index Key (CIK) is a unique identifier assigned by the SEC to each filer.
Why are some filings missing?
New filings appear as the SEC updates EDGAR, and older records can vary by availability.
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Updates follow new EDGAR submissions and periodic data refreshes.

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