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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
Quinlan is extraordinarily efficient in its work and delivers exactly what it promises.
Chambers & Partners
Business Intelligence & Investigations - Litigation Support
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
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
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
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
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
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
Quinlan Partners is extremely responsive, commercial and practical. Quinlan routinely keeps us updated on developments, flags anything we should be paying particular attention to, helps contextualize and benchmark results. All of this is incredibly valuable and adds value.
Chambers & Partners
Business Intelligence & Investigations - Litigation Support
Quinlan is incredibly diligent - they get to the bottom of everything. They are resourceful and creative and they come up with solutions to difficult tasks.
Chambers & Partners
Business Intelligence & Investigations - Litigation Support
Quinlan Partners has proven to be extremely responsive, transparent in the scope of their services and costs, and have provided services that demonstrate their incredible attention to detail.
Chambers & Partners
Business Intelligence & Investigations - Litigation Support
The team at Quinlan Partners has diverse backgrounds giving them a deep understanding of the issues and interests facing clients. Independently, each member of their team was incredibly capable, and their team composition results in each team member enhancing the work of the others.
Chambers & Partners
Business Intelligence & Investigations - Litigation Support
Quinlan is exceptional at what they do. I think the team is exceptional. They're able to find documents that no others can find and the customer and company feedback is extremely high quality.
Chambers & Partners
Investigative Due Diligence - Global-wide
Quinlan has a very high end, white glove service model. They use all the available technology, but couple it with an investigative journalist's savvy and thoughtfulness.
Chambers & Partners
Investigative Due Diligence - Global-wide
Quinlan stands out for their ability to generate proprietary, ground-level intelligence on compressed deal timelines without compromising discretion.
Chambers & Partners
Investigative Due Diligence - Global-wide
Latest News & Insights

Quinlan Partners Recognized in Chambers and Partners 2026 Litigation Support and Crisis & Risk Management Guides
News

Quinlan Partners Adds Senior Investigators Lisa Silverman and Mark Skertic
News
