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Form SC 13G/A - Statement of acquisition of beneficial ownership by individuals: [Amend]
SEC Accession No. 0001193125-09-018300
Filing Date
2009-02-04
Accepted
2009-02-04 09:29:26
Documents
1

Document Format Files

Seq Description Document Type Size
1 SCHEDULE 13G AMENDMENT NO. 5 dsc13ga.htm SC 13G/A 64950
  Complete submission text file 0001193125-09-018300.txt   66908
Mailing Address 5245 HELLYER AVE SAN JOSE CA 95138
Business Address 5245 HELLYER AVE SAN JOSE CA 95138 4084149200
POWER INTEGRATIONS INC (Subject) CIK: 0000833640 (see all company filings)

IRS No.: 943065014 | State of Incorp.: CA | Fiscal Year End: 1231
Type: SC 13G/A | Act: 34 | File No.: 005-52867 | Film No.: 09566973
SIC: 3674 Semiconductors & Related Devices

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