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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.
investigative interviews completed globally
countries where we’ve worked; >30 on the ground
AUM by investor clients, including serving one-third of PEI Top 25 PE firms
of AmLaw 50 served; 40% of AmLaw 100
organic growth in last five years
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 Adds Senior Investigators Lisa Silverman and Mark Skertic
News

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
