Company Names, identifiers, and filing context for this profile. 1 identity field
Company location
Boston, MA
SEC filing record 1 source field available
Fiscal year end
31 December
ALEXION PHARMACEUTICALS, INC. has filed 2,112 SEC EDGAR filings since 13 Jun 1996

SEC filing history

Showing 626-650 of 1,000 matching filings.

Per page
25
Current page
26
8-K File 000-27756

8-K

Filing date
30 Jul 2015
Reporting date
30 Jul 2015
SEC evidence
Open document Open filing
Next action
Verify source filing
4

4 filing

Filing date
24 Jul 2015
Reporting date
22 Jul 2015
SEC evidence
Open document Open filing
Next action
Verify source filing
4/A

4/A filing

Filing date
30 Jun 2015
Reporting date
22 Jun 2015
SEC evidence
Open document Open filing
Next action
Verify source filing
S-8 File 333-205379

FORM S-8

Filing date
30 Jun 2015
Reporting date
Not listed
SEC evidence
Open document Open filing
Next action
Verify source filing
3 File 000-23155

OWNERSHIP DOCUMENT

Filing date
29 Jun 2015
Reporting date
19 Jun 2015
SEC evidence
Open document Open filing
Next action
Verify source filing
4

4 filing

Filing date
24 Jun 2015
Reporting date
22 Jun 2015
SEC evidence
Open document Open filing
Next action
Verify source filing
3

3 filing

Filing date
24 Jun 2015
Reporting date
22 Jun 2015
SEC evidence
Open document Open filing
Next action
Verify source filing
S-8 POS File 333-204426

POST-EFFECTIVE AMENDMENT NO. 1 ON FORM S-8 TO FORM S-4

Filing date
23 Jun 2015
Reporting date
Not listed
SEC evidence
Open document Open filing
Next action
Verify source filing
8-K File 000-27756

FORM 8-K

Filing date
23 Jun 2015
Reporting date
19 Jun 2015
SEC evidence
Open document Open filing
Next action
Verify source filing
425

425

Filing date
22 Jun 2015
Reporting date
Not listed
SEC evidence
Open document Open filing
Next action
Verify source filing
SC TO-T/A

AMENDMENT NO. 3 TO SCHEDULE TO-T

Filing date
22 Jun 2015
Reporting date
Not listed
SEC evidence
Open document Open filing
Next action
Verify source filing
4

FORM 4

Filing date
19 Jun 2015
Reporting date
18 Jun 2015
SEC evidence
Open document Open filing
Next action
Verify source filing
EFFECT File 333-204426

EFFECT filing

Filing date
18 Jun 2015
Reporting date
Not listed
SEC evidence
Open document Open filing
Next action
Verify source filing
424B3 File 333-204426

PROSPECTUS/OFFER TO EXCHANGE

Filing date
18 Jun 2015
Reporting date
Not listed
SEC evidence
Open document Open filing
Next action
Verify source filing
CORRESP

CORRESP filing

Filing date
16 Jun 2015
Reporting date
Not listed
SEC evidence
Open document Open filing
Next action
Verify source filing
4

FORM 4

Filing date
12 Jun 2015
Reporting date
11 Jun 2015
SEC evidence
Open document Open filing
Next action
Verify source filing
425

425

Filing date
10 Jun 2015
Reporting date
Not listed
SEC evidence
Open document Open filing
Next action
Verify source filing
SC TO-T/A

AMENDMENT NO. 2 TO SCHEDULE TO-T

Filing date
09 Jun 2015
Reporting date
Not listed
SEC evidence
Open document Open filing
Next action
Verify source filing
S-4/A File 333-204426

AMENDMENT NO. 1 TO FORM S-4

Filing date
09 Jun 2015
Reporting date
Not listed
SEC evidence
Open document Open filing
Next action
Verify source filing
425

425

Filing date
05 Jun 2015
Reporting date
Not listed
SEC evidence
Open document Open filing
Next action
Verify source filing
UPLOAD

UPLOAD filing

Filing date
03 Jun 2015
Reporting date
Not listed
SEC evidence
Open document Open filing
Next action
Verify source filing
UPLOAD

UPLOAD filing

Filing date
03 Jun 2015
Reporting date
Not listed
SEC evidence
Open document Open filing
Next action
Verify source filing
425

425

Filing date
01 Jun 2015
Reporting date
Not listed
SEC evidence
Open document Open filing
Next action
Verify source filing
SC TO-T/A

AMENDMENT NO. 1 TO SCHEDULE TO-T

Filing date
01 Jun 2015
Reporting date
Not listed
SEC evidence
Open document Open filing
Next action
Verify source filing
S-4 File 333-204515

FORM S-4

Filing date
29 May 2015
Reporting date
Not listed
SEC evidence
Open document Open filing
Next action
Verify source filing
We use cookies and similar technologies to provide certain features, enhance the user experience and, if you allow them, measure engagement and deliver advertising. Analytics and marketing storage stay off until you grant consent. By clicking on "Agree and continue", you declare your consent to the use of the selected optional cookies. Manage preferences to update or revoke optional consent for future visits. For more information, see our Privacy Policy .