Delek US Executive and Leadership Team

June, 2026

Leadership Overview

Delek US has 5 executives leading key functions including strategy, human resources, finance, refining, and operations.

Driven by a commitment to operational excellence, Delek US is dedicated to powering communities through reliable energy production and distribution, fostering innovation in refining and renewable fuels, and maintaining robust logistics networks across the United States.

Leadership Roles at Delek US

  • President & Chief Executive Officer - Avigal Soreq
  • Executive Vice President and Chief Financial Officer - Mark Hobbs
  • Executive Vice President and President, Refining & Renewables - Joseph Israel
  • Executive Vice President & Chief Human Resources Officer - Sam Eljaouhari
  • Executive VP, Human Resources & Chief Human Resource Officer - Jared Serff
  • Avigal Soreq - President & Chief Executive Officer

    Avigal Soreq, the President & Chief Executive Officer at Delek US, directs the overarching corporate strategy and operational execution for the downstream energy company. Soreq guides the organization's engagement in petroleum refining, asphalt production, renewable fuels development, and logistics operations. This leadership involves optimizing the performance of multiple refineries and extensive midstream infrastructure assets that process and distribute crude oil and refined products nationwide. Soreq ensures the company's strategic initiatives align with market demands and long-term growth objectives, reinforcing Delek US's critical role in supporting national fuel supply chains and energy distribution networks. The Chief Executive Officer's purview extends to fostering innovation within the refining sector and advancing the company's renewable energy portfolio, positioning Delek US for sustained success in a dynamic energy landscape. Avigal Soreq drives the company's vision for operational efficiency and market leadership.
    Avigal Soreq

    Mark Hobbs - Executive Vice President and Chief Financial Officer

    Mark Hobbs, the Executive Vice President and Chief Financial Officer at Delek US, manages the company's financial operations, including accounting, treasury, tax, and investor relations. Hobbs directs financial planning, analysis, and reporting, ensuring fiscal discipline and strategic resource allocation across Delek US's petroleum refining, asphalt production, renewable fuels, and logistics segments. This critical role involves overseeing capital management, debt financing, and M&A activities, directly supporting the company's growth initiatives and operational stability. The Chief Financial Officer provides essential financial insights to guide executive decision-making, optimize profitability, and enhance shareholder value. Mark Hobbs's financial stewardship is fundamental to maintaining Delek US's robust position within the energy sector and facilitating its ongoing investments in infrastructure and sustainable energy solutions.

    Joseph Israel - Executive Vice President and President, Refining & Renewables

    Joseph Israel, the Executive Vice President and President, Refining & Renewables at Delek US, spearheads the strategic direction and operational oversight of the company's core refining assets and its expanding renewable fuels division. Israel directs the complex processes involved in transforming crude oil into refined products and asphalt, while simultaneously driving the development and integration of sustainable energy solutions. This leadership position involves optimizing refinery performance, ensuring compliance with stringent environmental regulations, and identifying opportunities for technological advancement across both traditional and renewable energy sectors. Joseph Israel's focus is on enhancing operational efficiency, maximizing product yields, and positioning Delek US as a leader in the energy transition. The President of Refining & Renewables ensures seamless integration between these vital business units, supporting the company's overall mission of reliable energy distribution and innovation.
    Joseph Israel

    Sam Eljaouhari - Executive Vice President & Chief Human Resources Officer

    Sam Eljaouhari, the Executive Vice President & Chief Human Resources Officer at Delek US, oversees all human capital management strategies and initiatives. Eljaouhari is responsible for cultivating a high-performance culture, driving talent acquisition and retention, and developing comprehensive employee engagement programs across the organization's refining, asphalt, renewable fuels, and logistics divisions. This executive role involves ensuring robust HR policies and practices support the company's operational goals and its mission to maintain critical energy supply chains. The Chief Human Resources Officer also champions diversity, equity, and inclusion efforts, fostering an environment where all employees can thrive and contribute to Delek US's success. Sam Eljaouhari's leadership ensures that the company's workforce is equipped and motivated to meet the evolving demands of the downstream energy sector and to support the strategic expansion into renewable energy solutions.

    Jared Serff - Executive VP, Human Resources & Chief Human Resource Officer

    Jared Serff, the Executive VP, Human Resources & Chief Human Resource Officer at Delek US, leads the comprehensive human resources function, ensuring alignment with the company's strategic objectives in petroleum refining, asphalt production, renewable fuels, and logistics. Serff directs the implementation of talent management strategies, employee development programs, and robust HR policies that support operational excellence and foster a positive work environment across all Delek US facilities. This executive responsibility includes overseeing workforce planning, compensation and benefits, and employee relations, crucial for maintaining the stability and productivity of the company's extensive operations. Jared Serff's leadership ensures that Delek US attracts, retains, and develops a skilled workforce capable of navigating the complexities of the energy industry and driving innovation in sustainable energy solutions. The Chief Human Resource Officer plays a pivotal role in cultivating a culture of safety, engagement, and continuous improvement.
    Jared Serff

    Frequently Asked Questions Regarding Delek US Top Executives and Leadership Team

    Who leads Delek US?
    Delek US is led by Avigal Soreq (President & Chief Executive Officer), along with executives such as Mark Hobbs (Executive Vice President and Chief Financial Officer) and Joseph Israel (Executive Vice President and President, Refining & Renewables).
    Who is part of Delek US’s executive team?
    The executive team of Delek US includes leaders such as Avigal Soreq (President & Chief Executive Officer), Mark Hobbs (Executive Vice President and Chief Financial Officer), Joseph Israel (Executive Vice President and President, Refining & Renewables) and other senior executives.
    How many executives does Delek US have?
    Delek US has 5 executives leading key business areas.
    What roles are included in Delek US’s leadership team?
    The leadership team of Delek US includes roles such as President & Chief Executive Officer, Executive Vice President and Chief Financial Officer, Executive Vice President and President, Refining & Renewables, Executive Vice President & Chief Human Resources Officer, Executive VP, Human Resources & Chief Human Resource Officer.