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Form SC 13G/A - Statement of acquisition of beneficial ownership by individuals: [Amend]
SEC Accession No. 0001354488-10-000270
Filing Date
2010-02-11
Accepted
2010-02-11 07:26:03
Documents
1

Document Format Files

Seq Description Document Type Size
1 SCHEDULE 13G AMENDMENT 4 westfield_13ga.htm SC 13G/A 37348
  Complete submission text file 0001354488-10-000270.txt   39414
Mailing Address 41 PINELAWN ROAD MELVILLE NY 11747
Business Address 41 PINELAWN ROAD MELVILLE NY 11747 631-962-2000
OSI PHARMACEUTICALS INC (Subject) CIK: 0000729922 (see all company filings)

IRS No.: 133159796 | State of Incorp.: DE | Fiscal Year End: 1231
Type: SC 13G/A | Act: 34 | File No.: 005-37954 | Film No.: 10589623
SIC: 2835 In Vitro & In Vivo Diagnostic Substances

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 | Fiscal Year End: 1231
Type: SC 13G/A