• Due Diligence & Business Intelligence
    • Pre-Investment & Pre-Relationship Due Diligence
    • Board and C-Suite Vetting
    • Business & Market Intelligence
    • Strategic Intelligence & Advisory
    • Third-Party Vetting & Compliance
    • Environmental, Social & Governance (ESG) / Corporate Social Responsibility (CSR)
  • Litigation Support & Corporate Disputes
    • Civil Litigation Support
    • White Collar Defense
    • Asset Tracing
    • Proxy Contests & Activist Campaigns
    • International Arbitration
  • Internal Investigations
    • Anti-Corruption Investigations
    • Fraud Investigations
    • Workspace Misconduct Investigations
AboutPeopleExperienceNewsInsightsCareersContact
  • Due Diligence & Business Intelligence
    • Pre-Investment & Pre-Relationship Due Diligence
    • Board and C-Suite Vetting
    • Business & Market Intelligence
    • Strategic Intelligence & Advisory
    • Third-Party Vetting & Compliance
    • Environmental, Social & Governance (ESG) / Corporate Social Responsibility (CSR)
  • Litigation Support & Corporate Disputes
    • Civil Litigation Support
    • White Collar Defense
    • Asset Tracing
    • Proxy Contests & Activist Campaigns
    • International Arbitration
  • Internal Investigations
    • Anti-Corruption Investigations
    • Fraud Investigations
    • Workspace Misconduct Investigations
AboutPeopleExperienceNewsInsightsCareersContact

Join our mailing list

Privacy

© Copyright 2026 Quinlan Partners. All rights reserved.

We use cookies to improve our website and your experience. Continued use will constitute consent. 

Find out what you're missing.

The next generation of global investigations and business intelligence.

Who we are

We are a global due diligence, investigations, and business intelligence firm that helps clients identify and mitigate risk, shape strategy, and achieve success.

3,000+

investigative interviews completed globally

0+

countries where we’ve worked; >30 on the ground

$0T+

AUM by investor clients, including serving one-third of PEI Top 25 PE firms

0%

of AmLaw 50 served; 40% of AmLaw 100

100%+

organic growth in last five years

0%

employee-owned and independent

Testimonials

Quinlan's reports are very detailed and they are available on demand. Their client care is superb. You just know you are in good hands.

Chambers & Partners

Investigative Due Diligence - Global-wide - 2025

Quinlan is extraordinarily efficient in its work and delivers exactly what it promises.

Chambers & Partners

Business Intelligence & Investigations - Litigation Support - 2025

I am a big fan of the Quinlan group, I think it is absolutely fantastic. It is responsive, technical and very efficient.

Chambers & Partners

Business Intelligence & Investigations - Litigation Support - 2025

Quinlan Partners is very receptive to the specific needs of any ask and is creative in coming up with a tailored solutions that are commercially reasonable in complex situations.

Chambers & Partners

Investigative Due Diligence - Global-wide - 2025

The depth of the quality of the research they were able to do was exceptional. It goes far beyond a background check.

Chambers & Partners

Investigative Due Diligence - Global-wide - 2024

Quinlan is efficient, fast and reliable. They jump in and get to work quickly. The team is very responsive and produces exceptional work product.

Chambers & Partners

Investigative Due Diligence - Global-wide - 2024

They have done a great job for us and really understand our pace and sensitivity. They seem to have great commercial judgment. They are able to understand the dynamics of a business and situation.

Chambers & Partners

Investigative Due Diligence - Global-wide - 2024

Their work has been incredibly valuable and provided insight for our clients on issues involving transactions and potential hires of key principals.

Chambers & Partners

Business Intelligence & Investigations - Litigation Support - 2024

Latest News & Insights

Quinlan Partners Wins Private Equity Wire’s U.S. Award for Strategic Intelligence Provider of the Year 2025

News

Holzman to Speak on Bloomberg Activism Forum Panel

Insights

Chambers badges

Quinlan Partners Recognized in 2025 Chambers and Partners’ Litigation Support and Crisis and Risk Management Guides

News