Stream Executive and Leadership Team

July, 2026

Leadership Overview

Stream has 6 executives leading key functions including strategy, finance, operations, 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, and investment strategies that deliver significant value to clients.

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 overall strategic vision and operational execution. Jackson guides the firm's expansion across all service lines, including leasing, property management, tenant representation, and investment. Overseeing the executive leadership team, Jackson ensures alignment with the company's core mission of delivering exceptional commercial real estate solutions. This leadership role involves fostering innovation and driving growth within the competitive real estate market. By championing a client-centric approach, Christopher Jackson solidifies Stream's position as a market leader. Jackson's strategic direction impacts all facets of the business, from market penetration to long-term financial health.
    Christopher Jackson

    Ariella Middlebrook - Chief Financial Officer

    Ariella Middlebrook, the Chief Financial Officer at Stream, manages the company's financial health and strategic fiscal planning. Middlebrook oversees all financial operations, including accounting, budgeting, forecasting, and capital allocation, ensuring robust financial controls and compliance. This role involves developing financial strategies that support Stream's growth objectives and enhance profitability across its diverse service offerings. Collaborating with other C-suite executives, Middlebrook provides critical financial insights to inform business decisions and investment opportunities. By optimizing financial performance, Ariella Middlebrook directly contributes to the company's sustained success and market competitiveness. The Chief Financial Officer's oversight extends to risk management and ensuring the financial stability necessary for continued expansion.
    Ariella Middlebrook

    Blake Kendrick - Chief Operating Officer

    Blake Kendrick, the Chief Operating Officer at Stream, directs the company's day-to-day operational efficiency and service delivery. Kendrick oversees the execution of Stream's leasing, property management, and facilities management services, ensuring high standards of performance and client satisfaction. This position involves optimizing operational processes, implementing best practices, and driving operational excellence across all markets. Collaborating closely with the President & CEO, Blake Kendrick ensures that operational strategies align with the company's broader business objectives. By enhancing operational capabilities, Kendrick directly supports Stream's ability to manage complex commercial real estate portfolios effectively. The Chief Operating Officer's focus on operational integrity is crucial for maintaining Stream's reputation for reliability and service quality.
    Blake Kendrick

    Shannan Hoover - President

    Shannan Hoover, the President at Stream, drives strategic initiatives and operational oversight across key business segments. Hoover focuses on enhancing service delivery and expanding market presence within the commercial real estate sector. This leadership position involves fostering strong client relationships and ensuring the consistent application of Stream's core values. Collaborating with the executive team, Shannan Hoover contributes to the development and execution of growth strategies. By leading specific divisions, Hoover directly impacts the company's ability to achieve its revenue and market share objectives. The President's role is integral to maintaining Stream's operational excellence and client-focused approach.

    Kathryn Lengyel - Chief Human Resources Officer

    Kathryn Lengyel, the Chief Human Resources Officer at Stream, leads all human capital strategies and organizational development initiatives. Lengyel oversees talent acquisition, employee relations, compensation and benefits, and performance management to cultivate a high-performing workforce. This role is critical in developing and implementing HR policies that support Stream's culture of collaboration and innovation. Working with executive leadership, Kathryn Lengyel ensures that human resources functions are strategically aligned with business goals, fostering employee engagement and retention. By championing talent development, Lengyel directly contributes to Stream's capacity to deliver exceptional client services. The Chief Human Resources Officer's expertise is vital for building and maintaining a robust organizational structure.
    Kathryn Lengyel

    Sam Dwinell - Chief People Officer (Interim)

    Sam Dwinell, the Chief People Officer (Interim) at Stream, provides interim leadership for human resources and people-focused strategies. Dwinell oversees critical functions related to talent management, employee engagement, and organizational culture during this transitional period. This role ensures continuity in HR operations and supports the ongoing development of Stream's workforce. Working closely with executive leadership, Sam Dwinell focuses on maintaining a positive and productive work environment. By guiding people strategies, Dwinell directly supports the company's operational objectives and employee well-being. The Chief People Officer (Interim)'s contribution is essential for sustaining organizational momentum and talent development.

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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.