Regulatory due diligence checklists usually merge two questions that have almost nothing in common. One is whether the target complies with the rules of its own industry, which is diligence on the business. The other is whether the transaction itself needs a clearance before it can close, which is diligence on the deal and has a form and a waiting period attached. This page separates them, because only the second has a deadline.
Question one: does the target comply?
Licences held and in good standing, inspection and enforcement history, open matters with any regulator, and the internal programme that keeps it compliant. This is ordinary diligence: it affects price and indemnities and it does not gate the timetable, so it can run in parallel with everything else.
Question two: does the deal itself need clearance?
In the United States that is principally the Hart-Scott-Rodino premerger notification, whose coverage rules sit in 16 CFR Part 801 and whose form sits in Part 803. It has thresholds, a filing and a waiting period, and it is a gate rather than a risk: no amount of good diligence makes a required filing optional.
Sector clearances are the ones that get missed
Financial services, healthcare, defence, telecoms, insurance and transport frequently require their own approval for a change of control, sometimes at state level and sometimes several times over. These are missed far more often than the antitrust filing because they are specific and unfamiliar, and each carries its own timetable.
Sequence it against the calendar, not the risk
Anything with a waiting period should be identified before signing, because it sets the outside date. Compliance findings can be handled by price and indemnity at any point; a clearance nobody identified cannot be handled at all until the clock has run.
Questions people ask about regulatory due diligence checklist
What is regulatory due diligence?
Two separate exercises: whether the target complies with its industry's rules, and whether the transaction needs a clearance to close.
Which one gates the timetable?
The clearance. A waiting period is a gate rather than a risk, and it should be identified before signing because it sets the outside date.
Which clearances get missed?
Sector change-of-control approvals in financial services, healthcare, defence, telecoms and insurance, often at state level.