8-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): August 2, 2012

Tesoro Corporation

(Exact name of registrant as specified in its charter)

Delaware	1-3473	95-0862768
(State or other jurisdiction of incorporation)	(Commission File Number)	(IRS Employer Identification No.)

19100 Ridgewood Pkwy San Antonio, Texas	78259-1828
(Address of principal executive offices)	(Zip Code)

(210) 626-6000

(Registrant's telephone number,

including area code)

Not Applicable

(Former name or former address, if

changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2.):

o Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

o Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

o Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

o Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Item 7.01Regulation FD Disclosure.

Financial information supplemental to the second quarter earnings conference call is available on the Company's website at www.tsocorp.com. The conference call is scheduled on August 2, 2012 at 7:30 a.m. CDT. The financial information supplemental to the conference call is filed as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated herein by reference.

Item 9.01  Financial Statements and Exhibits.

The information above is being furnished, not filed, pursuant to Item 7.01 of Form 8-K. Accordingly, the information in Item 7.01 of this Current Report, including the Slide Presentation, will not be incorporated by reference into any registration statement filed by the Company under the Securities Act of 1933, as amended, unless specifically identified therein as being incorporated by reference.

       (d)   Exhibits.

              99.1   Supplemental conference call financial information dated as of August 2, 2012.

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934 the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Date: August 2, 2012

TESORO CORPORATION
By:	/s/ G. SCOTT SPENDLOVE
	G. Scott Spendlove
	Senior Vice President and Chief Financial Officer

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Index to Exhibits

Exhibit Number	Description
99.1	Supplemental conference call financial information dated as of August 2, 2012.

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EX-99.1

2nd Quarter Earnings Slides August 2, 2012 Exhibit 99.1

This Presentation includes and references “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. These statements relate to, among other things, expectations regarding refining margins, revenues, cash flows, capital expenditures, turnaround expenses and other financial items. These statements also relate to our business strategy, goals and expectations concerning our market position, future operations, margins and profitability. We have used the words “anticipate,” “believe,” “could,” “estimate,” “expect,” “intend,” “may,” “plan,” “predict,” “project,” “will,” “would” and similar terms and phrases to identify forward-looking statements in this Presentation, which speak only as of the date the statements were made. Although we believe the assumptions upon which these forward-looking statements are based are reasonable, any of these assumptions could prove to be inaccurate and the forward-looking statements based on these assumptions could be incorrect. Our operations involve risks and uncertainties, many of which are outside our control, and any one of which, or a combination of which, could materially affect our results of operations and whether the forward-looking statements ultimately prove to be correct. Actual results and trends in the future may differ materially from those suggested or implied by the forward-looking statements depending on a variety of factors which are described in greater detail in our filings with the SEC. All future written and oral forward-looking statements attributable to us or persons acting on our behalf are expressly qualified in their entirety by the previous statements. We undertake no obligation to update any information contained herein or to publicly release the results of any revisions to any forward-looking statements that may be made to reflect events or circumstances that occur, or that we become aware of, after the date of this Presentation. Forward Looking Statements 2

3Q 2012 Guidance 3 Pacific Northwest Mid- Pacific Mid- Continent California Throughput (mbpd) 150-160 75-85 120-130 255-265 Manufacturing Cost ($/bbl) $ 4.65 $ 3.20 $ 3.75 $ 6.15 $ in millions, unless noted Corporate/System Refining Depreciation $ 95 Corporate Expense Before Depreciation $ 39 Interest Expense Before Interest Income $ 37

Net Income (Loss) 4 218 345 (124) 56 387 2Q 2011 3Q 2011 4Q 2011 1Q 2012 2Q 2012 Net Income (Loss) $ in millions 1.52 2.39 (0.89) 0.39 2.75 2Q 2011 3Q 2011 4Q 2011 1Q 2012 2Q 2012 EPS (Diluted) $ per share $ in millions, except per share amounts 2Q 2011 3Q 2011 4Q 2011 1Q 2012 2Q 2012 Refining $ 399 $ 600 $ (123) $ 191 $ 645 Retail 38 22 27 (4) 74 Corporate and Unallocated (18) (25) (59) (53) (38) Interest and Financing Costs1 (62) (38) (37) (36) (35) Other Income (Expense), net2 - 3 1 1 (18) Income Tax (Expense) Benefit (135) (210) 73 (37) (235) Less Net Income Attributable to Non-Controlling Interest (4) (7) (6) (6) (6) Net Income (Loss) attributable to Tesoro Corporation $ 218 $ 345 $ (124) $ 56 $ 387 EPS (Diluted) $ 1.52 $ 2.39 $ (0.89) $ 0.39 $ 2.75 1 Interest and financing costs include foreign currency gains and losses. 2 Represents net amount of interest income and other income (expense), as reported.

2Q 2012 Cash Flow 5 710 1,322 765 110 (53) (212) 2 Beginning Cash EBITDA Working Capital & Other Interest & Tax Capital Expenditures & Turnaround Financing Ending Cash $ in millions 1 Reconciliations of EBITDA, a non-GAAP financial measure, to net income and cash flows from (used in) operating activities are included in the press release issued on August 1, 2012, which can be found on our website at www.tsocorp.com. 1

Throughput by Refining Region 6 168 150 143 80 100 120 140 160 180 2Q 2011 2Q 2012 Guidance 2Q 2012 Actual MBPD Pacific Northwest 68 60 56 30 40 50 60 70 2Q 2011 2Q 2012 Guidance 2Q 2012 Actual MBPD Mid-Pacific 115 110 112 60 80 100 120 2Q 2011 2Q 2012 Guidance 2Q 2012 Actual MBPD Mid-Continent 227 260 268 120 160 200 240 280 2Q 2011 2Q 2012 Guidance 2Q 2012 Actual MBPD California

Manufacturing Cost by Refining Region 3.04 3.95 4.02 1.00 2.00 3.00 4.00 5.00 2Q 2011 2Q 2012 Guidance 2Q 2012 Actual $/bbl Pacific Northwest 3.97 4.60 4.46 1.00 2.00 3.00 4.00 5.00 2Q 2011 2Q 2012 Guidance 2Q 2012 Actual $/bbl Mid-Pacific 3.73 4.25 3.95 1.00 2.00 3.00 4.00 5.00 2Q 2011 2Q 2012 Guidance 2Q 2012 Actual $/bbl Mid-Continent 7.72 6.10 5.70 2.00 4.00 6.00 8.00 2Q 2011 2Q 2012 Guidance 2Q 2012 Actual $/bbl California 7

(In millions) Unaudited Capital Projects Mandan Expansion Salt Lake City Waxy Crude Project 2011 Pricing 2012 Pricing Projected net earnings $ 50 $ 62 $ 59 Add: Income tax expense1 29 37 35 Add: Depreciation and amortization expense 1 1 6 Projected EBITDA $ 80 $ 100 $ 100 EBITDA represents earnings before interest and financing costs, interest income, income taxes, and depreciation and amortization expense. We present EBITDA because we believe some investors and analysts use EBITDA to help analyze our cash flows including our ability to satisfy principal and interest obligations with respect to our indebtedness and to use cash for other purposes, including capital expenditures. EBTIDA is also used by some investors and analysts to analyze and compare companies on the basis of operating performance and by management for internal analysis and as a component of the fixed charge coverage financial covenant in our credit agreement. EBITDA should not be considered as an alternative to net earnings, earnings before income taxes, cash flows from operating activities or any other measure of financial performance presented in accordance with accounting principles generally accepted in the United States of America. EBITDA may not be comparable to similarly titled measures used by other entities. 1 Income tax expense estimates calculated using the six months ended June 30, 2012 effective tax rate of 37% Non-GAAP Financial Measure (In millions) Unaudited Projected TLLP Annual EBITDA TLLP Long Beach Marine Terminal Anacortes Rail Unloading Facility Projected net earnings $ 7 $ 6 Add: Interest and financing costs 14 10 Add: Depreciation and amortization expense 1 2 Projected EBITDA $ 22 $ 18 8