SEC Seal
SEC Banner
Search the Next-Generation EDGAR System
Filing Detail
Form 4 - Statement of changes in beneficial ownership of securities:
SEC Accession No. 0001638599-20-000322
Filing Date
2020-03-18
Accepted
2020-03-18 18:46:34
Documents
1
Period of Report
2020-03-18

Document Format Files

Seq Description Document Type Size
1 PRIMARY DOCUMENT doc4_6607.html 4  
1 PRIMARY DOCUMENT doc4_6607.xml 4 40500
  Complete submission text file 0001638599-20-000322.txt   44681
Mailing Address 121 SEAPORT BOULEVARD BOSTON MA 02210
Business Address 121 SEAPORT BOULEVARD BOSTON MA 02210 4752302596
ALEXION PHARMACEUTICALS, INC. (Issuer) CIK: 0000899866 (see all company filings)

IRS No.: 133648318 | State of Incorp.: DE | Fiscal Year End: 1231
SIC: 2834 Pharmaceutical Preparations

Mailing Address BAKER BROS. ADVISORS LP 860 WASHINGTON STREET 3RD FLOOR NEW YORK NY 10014
Business Address
BAKER JULIAN (Reporting) CIK: 0001087939 (see all company filings)

Type: 4 | Act: 34 | File No.: 000-27756 | Film No.: 20725940

Mailing Address BAKER BROS. ADVISORS LP 860 WASHINGTON STREET 3RD FLOOR NEW YORK NY 10014
Business Address
BAKER FELIX (Reporting) CIK: 0001087940 (see all company filings)

Type: 4 | Act: 34 | File No.: 000-27756 | Film No.: 20725939

Mailing Address 860 WASHINGTON STREET 3RD FLOOR NEW YORK NY 10014
Business Address 860 WASHINGTON STREET 3RD FLOOR NEW YORK NY 10014 2123395600
BAKER BROS. ADVISORS LP (Reporting) CIK: 0001263508 (see all company filings)

State of Incorp.: DE | Fiscal Year End: 1231
Type: 4 | Act: 34 | File No.: 000-27756 | Film No.: 20725935

Mailing Address 667 MADISON AVENUE 21ST FLOOR NEW YORK NY 10065
Business Address 667 MADISON AVENUE 21ST FLOOR NEW YORK NY 10065 212-339-5600
Baker Brothers Life Sciences LP (Reporting) CIK: 0001363364 (see all company filings)

State of Incorp.: DE | Fiscal Year End: 1231
Type: 4 | Act: 34 | File No.: 000-27756 | Film No.: 20725938

Mailing Address 860 WASHINGTON STREET 3RD FLOOR NEW YORK NY 10014
Business Address 860 WASHINGTON STREET 3RD FLOOR NEW YORK NY 10014 212-339-5600
667, L.P. (Reporting) CIK: 0001551139 (see all company filings)

State of Incorp.: DE | Fiscal Year End: 1231
Type: 4 | Act: 34 | File No.: 000-27756 | Film No.: 20725936

Mailing Address 860 WASHINGTON STREET 3RD FLOOR NEW YORK NY 10014
Business Address 860 WASHINGTON STREET 3RD FLOOR NEW YORK NY 10014 (212)339-5600
Baker Bros. Advisors (GP) LLC (Reporting) CIK: 0001580575 (see all company filings)

State of Incorp.: DE | Fiscal Year End: 1231
Type: 4 | Act: 34 | File No.: 000-27756 | Film No.: 20725937