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Business insurance insight that moves with you
Business insurance insight that moves with you

Insurance due diligence checklists and documents investors and acquirers expect on trial insurance, claims history and risk transfer.
You’re three weeks into Series B due diligence, or you’ve reached exclusivity in an acquisition process, and the buyer’s technical team has just submitted their insurance questions. Twenty-three detailed requests covering policy wordings, claims history, CRO indemnities, regulatory correspondence, vendor insurance certificates, and specific questions about that phase II incident from eighteen months ago that you disclosed in the data room.
This isn’t box-ticking. Sophisticated investors and acquirers use insurance due diligence to pressure-test your risk management, validate that liabilities are covered not just outsourced, and identify exposures that affect valuation or deal structure. This article shows you what they actually look for, how to prepare documentation that builds confidence rather than raising questions, and where disclosure problems derail deals or trigger price adjustments.
It’s written from the perspective of someone who’s reviewed hundreds of these requests—what matters, what’s theatre, and what you need ready before the data room opens.
The insurance request list looks exhaustive, but sophisticated buyers are probing three things: coverage adequacy, risk transfer reality, and incident management competence.
Coverage adequacy: Do you carry the right types and amounts of insurance for the trials you’re running? Are limits proportionate to participant numbers, trial phase, and product risk? Are there gaps between what you think is covered and what policies actually respond to?
Risk transfer reality: Have you genuinely transferred risk to insurers and vendors, or have you just created contractual promises that aren’t backed by actual coverage? If your CRO contract says they indemnify you for monitoring failures, do they actually carry professional indemnity insurance that covers it?
Incident management competence: When things went wrong—and sophisticated buyers assume something has gone wrong—did you respond systematically, notify properly, document decisions, and manage claims professionally?
The standard request list includes:
Buyers aren’t just collecting documents—they’re building a picture of how you think about and manage risk.
The best-prepared companies create a standing due diligence file that’s updated quarterly and audit-ready at any moment. Scrambling to assemble documents after the data room opens signals poor governance.
Structure the pack with clear indexing:
Create a single master document with a detailed table of contents and clear sections. Buyers should be able to find any document in under thirty seconds.
Section 1: Current insurance programme
Section 2: Claims history and reserves
Section 3: Trial documentation
Section 4: Contracts and risk allocation
Section 5: Vendor insurance evidence
Section 6: Regulatory and compliance
Index every document. Use consistent naming conventions. Include document dates and version numbers. The quality of your file organisation signals operational competence.
Claims history disclosure is where most friction occurs. Founders worry that disclosing incidents signals weakness. Buyers worry that undisclosed incidents signal governance failures or worse.
The practical approach: disclose everything, but control the narrative through documentation quality.
What to disclose:
Every notified claim, every serious adverse event that triggered regulatory reporting, every incident where insurers were notified even if no formal claim followed.
Concealment is far worse than a disclosed, well-managed incident. Buyers conduct their own searches—regulatory databases, litigation records, Freedom of Information requests to the MHRA. If they find something you didn’t disclose, trust collapses and deals often don’t recover.
How to disclose:
For each incident, provide a structured summary:
Include supporting documentation: SAE reports, root-cause analyses, regulatory correspondence, insurer settlement letters.
Why this approach works:
Sophisticated buyers expect incidents—trials are complex, regulated activities with inherent risk. What they’re assessing is your response competence. Rapid notification, systematic investigation, transparent regulatory engagement, and documented corrective actions demonstrate that you manage risk professionally.
A well-documented incident with a clear corrective action plan is often viewed more favourably than a perfect history with thin documentation—the latter suggests either exceptional luck or incomplete disclosure.
Buyers scrutinise whether your risk transfer is real or illusory. If you’ve delegated trial operations to a CRO with inadequate insurance, you haven’t transferred risk—you’ve just created a gap that becomes your exposure when claims arrive.
Standard vendor insurance questions:
What creates red flags:
What strengthens confidence:
Buyers want evidence that you actively manage vendor insurance compliance, not just that contracts require it.
Buyers assess whether your regulatory standing creates latent liabilities or deal risk.
Core regulatory documents:
Inspection and enforcement history:
What buyers are looking for:
Clean inspection history is ideal, but findings with documented corrective actions are acceptable. What creates concern is:
Why this matters for insurance:
Regulatory non-compliance can void insurance coverage or trigger exclusions. Buyers want assurance that your insurance programme isn’t compromised by unremediated regulatory findings.
Insurance findings don’t just create information requests—they affect price, structure and reps and warranties.
Valuation impact:
Uninsured or underinsured exposures reduce valuation. If you’re running a phase III trial with 500 participants but only carry £2 million in clinical trials insurance when underwriters would expect £10 million for that profile, buyers will either require you to increase limits before closing or adjust the valuation to reflect uninsured risk.
Large open claims with uncertain reserves create balance sheet risk. Buyers may escrow funds to cover potential settlements or adjust purchase price.
Deal structure impact:
Inadequate coverage can trigger earn-outs, escrows, or indemnity holdbacks. If you can’t demonstrate adequate insurance, buyers protect themselves by retaining more consideration pending claim resolution.
Material undisclosed incidents discovered during due diligence often trigger renegotiation or deal termination, depending on severity and the quality of your response.
Reps and warranties:
You’ll be asked to warrant that:
Breach of these warranties creates indemnity obligations post-closing. If an undisclosed claim emerges after closing, you may be liable for buyer losses.
The practical consequence: incomplete or inaccurate insurance disclosure creates post-closing exposure that can exceed the original deal value.
Based on hundreds of transactions, these insurance issues most commonly create deal friction:
Undisclosed claims or incidents. Buyers find them through regulatory database searches or Freedom of Information requests. Trust collapses. Deals often don’t recover.
Material coverage gaps. Running trials without required CTIMP insurance, carrying limits far below reasonable expectations, or missing entire coverage types (no cyber insurance despite holding participant data).
Vendor insurance failures. CROs or manufacturers with no insurance, expired certificates, or limits far below contractual indemnities. This signals you’ve outsourced risk without actually transferring it.
Poor claims documentation. Open claims with no reserve estimates, no investigation reports, or unclear timelines. Buyers can’t assess exposure, so they assume worst case and adjust price or structure accordingly.
Regulatory findings with weak corrective actions. MHRA non-compliance findings with no documented remediation or vague action plans. This suggests governance weakness and potential coverage issues.
Expired or lapsed policies. Periods where trials were running without current insurance. Even if no incidents occurred, this creates latent claims-made exposure and signals poor risk management.
Build your insurance due diligence file as a standing document:
Update the file quarterly. Conduct an annual internal audit of completeness. When the data room opens, you’re uploading existing files, not scrambling to assemble documents under time pressure.
Insurance due diligence in fundraising and M&A is a credibility test. Sophisticated buyers use it to assess whether you genuinely understand and manage clinical trial risk or whether you’ve just created contractual promises without backing coverage.
Complete, well-organised disclosure builds confidence. It demonstrates operational competence, transparent governance, and systematic risk management. Gaps, omissions, and poor documentation signal the opposite—and buyers price that risk through valuation adjustments, deal structure changes, or by walking away.
The practical approach: prepare your insurance due diligence file now as a standing document, disclose everything with clear supporting evidence, verify vendor insurance annually, and document incident responses systematically. When the data room opens, you’re ready. When questions arrive, you’re answering with evidence, not scrambling for documents.
Insurance due diligence doesn’t just satisfy buyer requests—it’s your opportunity to demonstrate that clinical risk is understood, insured, and managed professionally throughout your organisation.
Simplify Stream provides educational content about business insurance for UK companies, especially those with high growth business models that require specialist insurance market knowledge. We don't sell policies or provide regulated advice, just clear explanations from people who've worked on the underwriting and broking side.