Winston & Strawn Executive and Leadership Team

June, 2026

Leadership Overview

Winston & Strawn has 4 executives leading key functions including operations, marketing, finance, and administration.

Driven by a commitment to excellence, Winston & Strawn upholds a leadership philosophy centered on strategic execution and client-focused service, shaping its significant impact across global legal markets.

Leadership Roles at Winston & Strawn

  • Deputy Chief Financial Officer - Raul Contreras
  • Chief Operating Officer - Amy Kotulski
  • Partner and Chief Marketing Officer - Barbara Sessions
  • Chief Administrative Officer - Mark Stull
  • Raul Contreras - Deputy Chief Financial Officer

    Raul Contreras, the Deputy Chief Financial Officer at Winston & Strawn, supports the strategic financial management and fiscal health of the international firm. Overseeing critical financial operations, Contreras ensures robust accounting practices and accurate financial reporting across all global offices. This position involves managing budgets, analyzing financial performance, and identifying opportunities for cost optimization and revenue enhancement. By collaborating with practice group leaders, Raul Contreras contributes to informed decision-making regarding resource allocation and investment strategies. The Deputy Chief Financial Officer's expertise is vital in navigating complex international financial regulations and supporting the firm's sustained profitability and expansion in diverse markets.

    Amy Kotulski - Chief Operating Officer

    Amy Kotulski, the Chief Operating Officer at Winston & Strawn, directs the firm's global operational infrastructure and administrative functions. Overseeing the efficient delivery of legal services across international offices, Kotulski ensures seamless integration of technology and process improvements. This leadership role involves optimizing resource allocation and managing the firm's extensive network of support staff to enhance productivity and client satisfaction. By streamlining workflows and implementing best practices, Amy Kotulski directly contributes to the firm's capacity to handle complex international cases. The Chief Operating Officer's strategic oversight extends to facilities management and operational risk mitigation, safeguarding the firm's operational integrity and supporting its continued growth in key global markets.

    Barbara Sessions - Partner and Chief Marketing Officer

    Barbara Sessions, the Partner and Chief Marketing Officer at Winston & Strawn, architects the firm's global brand strategy and market positioning. Driving client acquisition and retention initiatives, Sessions oversees all aspects of marketing, communications, and business development. This critical role involves translating the firm's legal expertise into compelling market narratives that resonate with a diverse international clientele. By developing targeted campaigns and enhancing digital presence, Barbara Sessions strengthens Winston & Strawn's competitive advantage in key practice areas such as antitrust and intellectual property law. The Chief Marketing Officer's leadership ensures consistent brand messaging across all regions, from the United States to the Middle East, fostering deeper client relationships and expanding market reach.
    Barbara Sessions

    Mark Stull - Chief Administrative Officer

    Mark Stull, the Chief Administrative Officer at Winston & Strawn, directs the comprehensive administrative functions that support the firm's global operations. Overseeing human resources, IT infrastructure, and professional development programs, Stull ensures a highly efficient and supportive work environment for all legal professionals and staff. This leadership position is integral to fostering a culture of collaboration and continuous improvement across the firm's international offices. By managing key administrative departments, Mark Stull enhances operational effectiveness and supports the strategic objectives of the firm's practice areas, including environmental and tax law. The Chief Administrative Officer's focus on talent management and operational excellence is crucial for maintaining Winston & Strawn's reputation for superior client service.
    Mark Stull

    Frequently Asked Questions Regarding Winston & Strawn Top Executives and Leadership Team

    Who leads Winston & Strawn?
    Winston & Strawn is led by Raul Contreras (Deputy Chief Financial Officer), along with executives such as Amy Kotulski (Chief Operating Officer) and Barbara Sessions (Partner and Chief Marketing Officer).
    Who is part of Winston & Strawn’s executive team?
    The executive team of Winston & Strawn includes leaders such as Raul Contreras (Deputy Chief Financial Officer), Amy Kotulski (Chief Operating Officer), Barbara Sessions (Partner and Chief Marketing Officer) and other senior executives.
    How many executives does Winston & Strawn have?
    Winston & Strawn has 4 executives leading key business areas.
    What roles are included in Winston & Strawn’s leadership team?
    The leadership team of Winston & Strawn includes roles such as Deputy Chief Financial Officer, Chief Operating Officer, Partner and Chief Marketing Officer, Chief Administrative Officer.