Stream Executive and Leadership Team

May, 2026

Leadership Overview

Stream has 6 executives leading key functions including strategy, operations, finance, human resources, and people management.

Driven by a commitment to excellence, Stream is dedicated to providing comprehensive commercial real estate services, specializing in leasing, property management, tenant representation, development, investment, and sustainability to drive client success.

Leadership Roles at Stream

  • President & Chief Executive Officer - Christopher Jackson
  • Chief Financial Officer - Ariella Middlebrook
  • Chief Operating Officer - Blake Kendrick
  • President - Shannan Hoover
  • Chief Human Resources Officer - Kathryn Lengyel
  • Chief People Officer (Interim) - Sam Dwinell
  • Christopher Jackson - President & Chief Executive Officer

    Christopher Jackson, the President & Chief Executive Officer at Stream, directs the company's overarching strategy and operational execution. Overseeing all business units, Jackson ensures alignment with Stream's mission of delivering exceptional commercial real estate services. This leadership role involves guiding the firm's expansion and market positioning across leasing, property management, tenant representation, development, investment, and sustainability initiatives. By fostering a culture of innovation and client-centricity, Christopher Jackson drives the company's growth and reinforces its reputation as a market leader. Jackson's strategic vision shapes the firm's direction, ensuring robust performance and sustained value creation for clients and stakeholders nationwide.
    Christopher Jackson

    Ariella Middlebrook - Chief Financial Officer

    Ariella Middlebrook, the Chief Financial Officer at Stream, directs all financial activities and fiscal strategy for the commercial real estate services firm. Overseeing accounting, financial planning, and investment analysis, Middlebrook ensures the financial health and stability of the company. This leadership position involves managing capital allocation, risk assessment, and reporting to stakeholders, supporting Stream's leasing, property management, and development ventures. By providing critical financial insights, Ariella Middlebrook enables informed decision-making across all business segments. Middlebrook's expertise is vital for optimizing investment returns and sustaining the company's growth trajectory in the dynamic real estate market.
    Ariella Middlebrook

    Blake Kendrick - Chief Operating Officer

    Blake Kendrick, the Chief Operating Officer at Stream, manages the day-to-day operations and ensures the efficient delivery of all commercial real estate services. Overseeing property and facilities management, tenant representation, and development operations, Kendrick optimizes internal processes to enhance service quality and client satisfaction. This critical role involves coordinating cross-functional teams to execute Stream's strategic objectives, particularly in leasing and investment activities. By driving operational excellence, Blake Kendrick supports the company's expansion into new markets and strengthens its service offerings. Kendrick's focus on operational efficiency directly contributes to Stream's ability to provide integrated solutions and maintain its competitive edge in the real estate sector.
    Blake Kendrick

    Shannan Hoover - President

    Shannan Hoover, the President at Stream, holds a significant leadership position driving key business functions within the commercial real estate services firm. Overseeing specific strategic initiatives and operational areas, Hoover ensures the effective execution of Stream's mission across its diverse service lines, including leasing, property management, and development. This role involves collaborating with other executives to foster growth and enhance client relationships nationwide. By championing operational excellence and strategic partnerships, Shannan Hoover contributes directly to Stream's market presence and sustained success. Hoover's leadership is instrumental in advancing the company's objectives and reinforcing its industry standing.

    Kathryn Lengyel - Chief Human Resources Officer

    Kathryn Lengyel, the Chief Human Resources Officer at Stream, leads all human capital strategies and talent management initiatives for the organization. Overseeing recruitment, employee development, compensation, and benefits, Lengyel ensures Stream attracts and retains top talent essential for its commercial real estate services. This role is pivotal in cultivating a positive and productive work environment that supports the company's mission in leasing, property management, and investment. By developing robust HR programs, Kathryn Lengyel enhances employee engagement and organizational effectiveness. Lengyel's leadership in human resources directly contributes to Stream's ability to deliver superior client services and achieve its strategic growth objectives.
    Kathryn Lengyel

    Sam Dwinell - Chief People Officer (Interim)

    Sam Dwinell, the Chief People Officer (Interim) at Stream, provides interim leadership for people-focused initiatives and talent strategies. Overseeing key aspects of human resources during this transitional period, Dwinell ensures continuity in employee support and development programs critical to Stream's commercial real estate operations. This role focuses on maintaining a strong organizational culture and supporting the teams involved in leasing, property management, and investment services. By guiding people operations, Sam Dwinell contributes to the stability and ongoing success of the company's workforce. Dwinell's interim leadership ensures that human capital remains a strategic asset during this period of transition.

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    Frequently Asked Questions Regarding Stream Top Executives and Leadership Team

    Who leads Stream?
    Stream is led by Christopher Jackson (President & Chief Executive Officer), along with executives such as Ariella Middlebrook (Chief Financial Officer) and Blake Kendrick (Chief Operating Officer).
    Who is part of Stream’s executive team?
    The executive team of Stream includes leaders such as Christopher Jackson (President & Chief Executive Officer), Ariella Middlebrook (Chief Financial Officer), Blake Kendrick (Chief Operating Officer) and other senior executives.
    How many executives does Stream have?
    Stream has 6 executives leading key business areas.
    What roles are included in Stream’s leadership team?
    The leadership team of Stream includes roles such as President & Chief Executive Officer, Chief Financial Officer, Chief Operating Officer, President, Chief Human Resources Officer.