Portman Square Group Employee Directory

Business Consulting and ServicesNew York, United States11-50 Employees

Portman Square Group (PSG) is a premier full-service business intelligence and strategic communications firm adept at navigating the complexities of today's global economy. Through our expertise and innovative solutions, we empower clients to overcome challenges, identify opportunities, and drive lasting change.

Our global intelligence services encompass comprehensive due diligence, investigations, strategic asset tracing, and cutting-edge cybersecurity support. Simultaneously, our communications team excels in crisis management, media relations, and public advocacy, crafting compelling narratives that resonate with stakeholders.

With a seasoned team of experts from government, intelligence, military, and corporate backgrounds, PSG offers unparalleled insights and strategies. We specialize in sensitive issues requiring discretion, creativity, and tactical finesse and operate seamlessly across sectors.

PSG's tailored approach ensures clients not only weather storms but emerge stronger. Whether conducting multi-jurisdictional investigations, shaping public opinion, or navigating federal policies, our integrated services provide a competitive edge.

Find Portman Square Group employees' phone numbers or email addresses

Portman Square Group Global Highlights

Location
Employees

North America
33

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  • United States Of America
    29
  • Mexico
    4

Portman Square Group's Leadership

  • Stylized image of a person
    E. R. B.
    Chief Operating Officer
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  • Stylized image of a person
    M. B.
    Chairman/Ceo Portman Square Group (formerly Diligence Usa Llc)
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  • Stylized image of a person
    M. B.
    Chairman/Ceo Portman Square Group (formerly Diligence Usa Llc)
    Phone icon
  • Stylized image of a person
    A. H.
    Director, Strategic Communications
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  • Stylized image of a person
    C. F.
    Director Of Operations, Mexico And Latin America
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  • Stylized image of a person
    K. O.
    Controller
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  • Stylized image of a person
    R. C.
    Deputy Director
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  • Stylized image of a person
    S. M.
    Managing Director, Research
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Portman Square Group Employee Metrics

100%
50%
0%
2026
2025
  • Marketing
  • Accounting
  • Analytics
  • Branding
  • Business
  • Other
  • Consultant
  • Administrative

Contact profiles from Portman Square Group

Name
Title
Contact Info
Location
Last Update
  • Stylized image of a person
    E. R. B.
    Chief Operating Officer
    Phone icon
    United StatesIdaho
    Feb 05, 2026
  • Stylized image of a person
    M. B.
    Chairman/Ceo Portman Square Group (formerly Diligence Usa Llc)
    Phone icon
    United StatesNew York
    Sep 20, 2024
  • Stylized image of a person
    M. B.
    Chairman/Ceo Portman Square Group (formerly Diligence Usa Llc)
    Phone icon
    Sep 20, 2024
  • Stylized image of a person
    A. H.
    Director, Strategic Communications
    Phone icon
    United StatesIdaho
    Nov 25, 2025
  • Stylized image of a person
    C. F.
    Director Of Operations, Mexico And Latin America
    Phone icon
    Nov 25, 2025
  • Stylized image of a person
    K. O.
    Controller
    Phone icon
    United StatesNew York
    Nov 25, 2025
  • Stylized image of a person
    R. C.
    Deputy Director
    Phone icon
    MexicoNuevo León
    Dec 12, 2024
  • Stylized image of a person
    S. M.
    Managing Director, Research
    Phone icon
    United StatesConnecticut
    Nov 25, 2025
  • Stylized image of a person
    A. C.
    Associate Principal
    Phone icon
    Taiwan
    Jan 27, 2026
  • Stylized image of a person
    A. H. D.
    Associate Principal
    Phone icon
    United StatesDistrict of Columbia
    Nov 25, 2025

Frequently Asked Questions

What is Portman Square Group known for?

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Portman Square Group was founded in 2000 operates in the Business Consulting and Services industry. The company's main headquarters is located in 9 East 45th Street 5th Floor New York, New York 10017 United States. Explore Portman Square Group's company overview page for more information.

What is Portman Square Group's most common email format?

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Portman Square Group employees' email format typically follows the pattern of . Trying to find reliable and up-to-date employee contact data? Find more Portman Square Group email formats with LeadIQ.

How many employees does Portman Square Group have currently?

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Portman Square Group has approximately 28 employees as of February 2026. These team members are located across 1 continents, including North America.

Who are Portman Square Group's key employees and leadership?

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As of February 2026, Portman Square Group's key employees include:

  • Chief Operating Officer: E. R. B.
  • Chairman/Ceo Portman Square Group (formerly Diligence Usa Llc): M. B.
  • Chairman/Ceo Portman Square Group (formerly Diligence Usa Llc): M. B.
  • Director, Strategic Communications: A. H.
  • Director Of Operations, Mexico And Latin America: C. F.

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