What This Means: Managing due diligence means organizing many expert teams and tasks all at once, under tight deadlines. It requires smooth teamwork between financial, legal, tax, operational, and strategy specialists, clear communication, strict confidentiality, and quick problem-solving to protect the deal’s value and timeline.
The Challenge: Handling dozens of advisors reviewing thousands of documents at the same time is very complex. You need detailed project oversight and strong coordination so nothing gets missed or delayed.
Why It Matters: Bad management of due diligence can lead to missed risks, extra costs, regulatory problems, or even losing the deal. Good management speeds up decisions, lowers risks, and builds confidence for closing and integration.
Real Deal Example: Johnson & Johnson’s purchase of Actelion shows how to do this well: they managed 15 teams, 200+ advisors, and 2 million documents in just 90 days. They held daily meetings, tracked issues live, and quickly addressed problems. The deal was even more complicated because Actelion’s research and development part was spun off into a new Swiss company during the process.
In mid-market deals, while the scale is smaller, the same principles apply. Instead of hundreds of advisors, mid-market transactions typically involve smaller, focused teams, often up to 10 key advisors managing a handful of diligence workstreams. Strong project management and communication remain essential to keep the deal on track and protect value.
Success Factors: The key is strong project management and good technology to keep everyone informed and solve problems fast. Planning early how the companies will integrate also improves results and keeps deal value safe.
Share Your Perspectives: Dealmakers – feel free to share your tips and experiences managing big, complex due diligence projects.


