Tesoro Corporation19100 Ridgewood ParkwaySan Antonio, Texas 78259www.tsocorp.com/careers

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Guiding Principles

We conduct business at Tesoro based on a strong culture that is grounded by our Guiding Principles. Our High-Performing Culture drives the characteristics and behaviors we expect from our employees, and is integral to being a successful company, a trusted, and valued business partner and a good corporate citizen.

u Core Values: • Safety and Environment • Respect • Integrity

u Recruiting, retaining, and developing Exceptional People

u Operating with a Shared Purpose

u Fostering Powerful Collaboration

u Focusing on Superior Execution

HIGH-PERFORMING CULTURE

HP

Discover Your Future.

Headquarters

Refinery

Natural Gas Processing Plant

Retail

Marine Terminal

Crude Oil & Refined Product Terminal

Pipeline

Rail Facility

Tesoro’s success has been greatly bolstered by our leadership’s ability to seize opportunity in the market in an agile and decisive way. This affords our employees many opportunities for cross-functional growth and exposure throughout the Company. As we continue to build a High-Performing Culture, we encourage mobility amongst our employees to develop exceptional talent with broad skillsets.

Learn more about Tesoro’s commitment to social responsibility www.tsocorp.com/responsibility

Take Initiative.Make An Impact.

InternshipProgram

“Since day one, Tesoro provided challenging work and a collaborative environment which enabled me to think outside the box and come up with new ideas to further improve our work.”

Robert O. | RDP, AccountingUniversity of Texas at San AntonioFormer Intern

Rotational Development

Program

Tesoro hires exceptional individuals whose personal values align with our High-Performing Culture and the Guiding Principles that define how we do business.

During the internship, you will experience:

u Professional Development u Mentorship u Networking u Leadership Engagement u Project Presentation u Community Outreach

The internship program provides a talent pipeline for the Rotational Development Program and other early career opportunities.

“As an intern I was given quality projects that were actual engineering work. Because the projects were robust, returning to Tesoro as a full-time hire was a smooth transition.”

Elliott J. | RDP, RefiningTexas A&M UniversityFormer Intern

Tesoro’s Rotational Development Program (RDP) offers full-time, hands-on experience that will provide the opportunity for growth, learning, and development.

Tesoro also recruits other disciplines including but not limited to: Corporate Affairs, Environmental Health & Safety, and Supply Chain. Review openings & qualifications, and apply @ www.tsocorp.com/careers. EOE: Race / Sex / Veteran / Disability.

“In just four months I’ve been able to work on a number of field projects including: integrity management, project management, and risk ranking providing me a broad overview of the company.”

Lauren N. | RDP, Logistics University of California, Los Angeles Former Intern

At A Glance.

Refining

Duration: 1 Year

Locations: Company Wide

Majors: Chemical Engineering Mechanical Engineering

Finance

Duration: 3 Years

Locations: TX, WA, CA

Majors: Economics Finance

Logistics

Duration: 2 Years

Locations: Company Wide

Majors: Electrical Engineering Mechanical Engineering

Accounting

Duration: 3 Years

Location: TX

Major: Accounting

(CPA Eligibility Strongly Preferred)

HR

Duration: 2-3 Years

Locations: Company Wide

Major: Human Resources

(Master’s Required)

IT

Duration: 3 Years

Locations: Company Wide

Majors: Computer Engineering Computer Science Management Information Systems

One of the LARGEST Independent Refiners in the U.S.C O M PA N Y

Based on information reported in our 2015 Form 10-K Filing.