Privacy due diligence for mergers and acquisitions

Don't inherit someone else's privacy problems. Get clarity before you sign.

Privacy due diligence for M&A identifies compliance gaps, regulatory risks, and data protection liabilities in target companies before the deal closes, so you know exactly what you're acquiring and what needs fixing.

Key takeaways

  • Privacy gaps in an acquisition target can affect deal valuation, create post-close liability, and require expensive remediation

  • Acquirers increasingly include privacy compliance in their due diligence checklist alongside financial and legal review

  • Post-close integration requires careful privacy planning: data merging, consent management, policy alignment, and supervisory authority notifications

  • Your DPO has supported M&A privacy due diligence across many organizations including corporate transactions at scale

What we handle for M&A privacy due diligence

Pre-deal (buy-side diligence):

  • Privacy compliance gap assessment of the target company

  • Review of target's privacy documentation (policies, RoPA, DPAs, DPIAs)

  • Assessment of regulatory risk: pending complaints, breach history, supervisory authority interactions

  • Data transfer mechanism review (SCCs, adequacy, DPF)

  • Vendor and sub-processor risk assessment

  • AI governance review (if target uses AI/ML)

  • Identification of remediation requirements and estimated costs

  • Summary report for deal team and investors

Post-deal (integration):

  • Privacy integration planning: merging data environments, aligning policies, updating processor agreements

  • Supervisory authority notifications (DPO changes, controller changes, where applicable)

  • Combined privacy framework development

  • Staff privacy training for the merged entity

  • Ongoing DPO services for the combined organization

Sell-side support:

  • Privacy posture preparation before going to market

  • Building a privacy documentation package that withstands buyer scrutiny

  • Addressing known gaps before they become deal issues

Why privacy matters in M&A

Privacy compliance gaps in an acquisition target aren't just legal risk. They're financial risk. Examples:

  • A target with no GDPR compliance facing EU customers means post-close remediation costs of tens of thousands of euros

  • Undisclosed breach history can create post-close liability exposure for the acquirer

  • Improperly obtained consent or missing legal bases for processing may require remediation, which can reduce usable data

  • Target's vendor agreements may not meet GDPR processor requirements, requiring renegotiation across the supply chain

Identifying these issues before closing gives you negotiating leverage and accurate remediation budgets.

Investment

M&A privacy due diligence is typically project-based. Buy-side assessments start from €5,000 depending on the target's size, complexity, and jurisdictions. Ongoing DPO services for the combined entity follow standard retainer pricing. See our DPO Cost Guide.

FAQ

When should privacy due diligence happen in the M&A process? Ideally during the main due diligence phase, alongside financial and legal review. If you wait until post-close, you lose negotiating leverage and may inherit liabilities you could have addressed.

What do you actually review? Privacy policies, records of processing, DPAs, DPIAs, breach history, vendor agreements, consent mechanisms, data transfer mechanisms, supervisory authority correspondence, AI governance documentation, and staff training records. We produce a gap report with risk ratings and remediation recommendations.

Can you support both buy-side and sell-side? Yes, but not simultaneously on the same transaction. We support acquirers with target assessment and sellers with compliance preparation. In each case, the goal is the same: clear documentation and no surprises.

Do you provide ongoing DPO services after the deal closes? Yes. Most acquirers need DPO support during the integration phase and beyond. We provide continuity from diligence through integration.

This page is general information, not legal advice. Exact obligations depend on your specific situation and jurisdictions.

Related pages