Where are Portman Square Group employees located globally?

Portman Square Group has employees across 2 continents and 3 countries including United States Of America, Mexico, Taiwan.

How has Portman Square Group's team size changed over time?

Portman Square Group's team has decreased from approximately 24 to 23 employees based on available data.

Portman Square Group Employee Directory

Business Consulting and ServicesNew York, United States11-50 Employees

Portman Square Group (PSG) operates as a full-service business intelligence and strategic communications firm, supporting clients through due diligence, investigations, strategic asset tracing, and cybersecurity. The company also offers crisis management, media relations, and public advocacy services, aiming to help organizations respond to and navigate complex events while communicating effectively with stakeholders.
Based in New York City, PSG draws from a diverse team with backgrounds across government, intelligence, military, and corporate sectors to provide discreet and adaptable solutions across industries. The firm emphasizes handling sensitive issues with discretion and tactical nuance, including multi-jurisdictional investigations and guidance on federal policy, and it recently expanded its cybersecurity and investigations capabilities with a new leadership appointment in 2024.

Portman Square Group Global Highlights

North America
31

United States Of America
28
Mexico
3

Portman Square Group's Leadership

M. B.
Chairman/Ceo Portman Square Group (formerly Diligence Usa Llc)
Mobile Phone
Email
R. C.
Deputy Director
Mobile Phone
Email
A. C.
Associate Principal
Mobile Phone
Email
A. H.
Board Member
Mobile Phone
Email
K. P.
Director Cyber And Investigations
Mobile Phone
Email

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

M. B.
Chairman/Ceo Portman Square Group (formerly Diligence Usa Llc)
Mobile Phone
Email
Sep 20, 2024
R. C.
Deputy Director
Mobile Phone
Email
MexicoNuevo León
Dec 12, 2024
A. C.
Associate Principal
Mobile Phone
Email
Taiwan
Jun 24, 2026
A. H.
Board Member
Mobile Phone
Email
Jul 16, 2026
K. P.
Director Cyber And Investigations
Mobile Phone
Email
Nov 25, 2025

Frequently Asked Questions

What is Portman Square Group known for?

Portman Square Group was founded in 2000 operates in the Business Consulting and Services industry. Explore Portman Square Group's company overview page for more information.

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

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?

Portman Square Group has approximately 25 employees as of July 2026. These team members are located across 1 continents, including North America.

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

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

Chairman/Ceo Portman Square Group (formerly Diligence Usa Llc): M. B.
Deputy Director: R. C.
Associate Principal: A. C.
Board Member: A. H.
Director Cyber And Investigations: K. P.

Looking for contact data? Unlock accurate emails and phone numbers for your ideal prospects with LeadIQ.

Everything for prospecting,
in one platform.

What you can expect from LeadIQ:

B2B data verified in real-time
Sync data to your CRM, & add it to an outreach sequence in one click
Integrations with your tech stack for optimal efficiency
A patented AI cold email generator
Account & contact-level job change tracking

Portman Square Group Employee Directory

Find Portman Square Group employees' phone numbers or email addresses

Name search is limited — try advanced search instead