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Form SC 13G/A - Statement of acquisition of beneficial ownership by individuals: [Amend]
SEC Accession No. 0001354488-14-000537
Filing Date
2014-02-07
Accepted
2014-02-07 09:00:13
Documents
1

Document Format Files

Seq Description Document Type Size
1 SCHEDULE 13G/A west_sc13ga.htm SC 13G/A 71339
  Complete submission text file 0001354488-14-000537.txt   72918
Mailing Address 352 KNOTTER DRIVE CHESHIRE CT 06511
Business Address 352 KNOTTER DRIVE CHESHIRE CT 06511 2037761790
ALEXION PHARMACEUTICALS INC (Subject) CIK: 0000899866 (see all company filings)

IRS No.: 133648318 | State of Incorp.: DE | Fiscal Year End: 1231
Type: SC 13G/A | Act: 34 | File No.: 005-47771 | Film No.: 14581998
SIC: 2834 Pharmaceutical Preparations

Mailing Address ONE FINANCIAL CENTER 24FL BOSTON MA 02111
Business Address ONE FINANCIAL CENTER 24FL BOSTON MA 02111 6174287100
WESTFIELD CAPITAL MANAGEMENT CO LP (Filed by) CIK: 0001177719 (see all company filings)

IRS No.: 800175963 | State of Incorp.: DE | Fiscal Year End: 1231
Type: SC 13G/A