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Filing Detail
Form SC 13G - Statement of acquisition of beneficial ownership by individuals:
SEC Accession No. 0001354488-12-000561
Filing Date
2012-02-13
Accepted
2012-02-13 10:16:42
Documents
1

Document Format Files

Seq Description Document Type Size
1 SCHEDULE 13G tso_13g.htm SC 13G 80931
  Complete submission text file 0001354488-12-000561.txt   82582
Mailing Address 19100 RIDGEWOOD PKWY SAN ANTONIO TX 78259-1828
Business Address 19100 RIDGEWOOD PKWY SAN ANTONIO TX 78259-1828 210 626-6000
TESORO CORP /NEW/ (Subject) CIK: 0000050104 (see all company filings)

IRS No.: 950862768 | State of Incorp.: DE | Fiscal Year End: 1231
Type: SC 13G | Act: 34 | File No.: 005-32167 | Film No.: 12595700
SIC: 2911 Petroleum Refining

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