A foreign investor closes an acquisition of a Danish technology company and proceeds to integrate operations – only to discover weeks later that the transaction required mandatory pre-closing notification under Denmark's investment screening legislation. The deal is now subject to unwinding orders and regulatory fines. This scenario is no longer hypothetical. Denmark has materially tightened its foreign direct investment screening rules, and the consequences of non-compliance are severe.
Denmark's updated foreign investment screening rules, effective from early 2024, impose mandatory pre-transaction notification obligations on non-EU and non-NATO investors acquiring influence in Danish companies operating in sensitive sectors. Transactions that cross defined ownership thresholds must be notified to the Danish Business Authority before completion. Failure to notify within the prescribed period can result in fines, mandatory unwinding, and deal prohibition.
This alert sets out what changed, which business categories and ownership thresholds trigger the notification duty, the compliance deadline, and five immediate steps international companies should take now.
What changed and when it took effect
Denmark's investment screening legislative regime was first introduced in 2021. The rules were significantly expanded through amendments that entered into force in early 2024. The update extends both the scope of sectors covered and the categories of investors subject to mandatory notification.
Previously, mandatory notification applied primarily to acquisitions by non-EU, non-EEA, and non-NATO investors. The expanded rules now also capture EU and EEA investors in a broader set of critical sectors. This is a material shift. European investors who previously assumed they fell outside the screening system must reassess that assumption.
The Danish Business Authority (Erhvervsstyrelsen) administers the regime. It has the power to approve, conditionally approve, or prohibit transactions. It may also impose conditions after approval if circumstances change. The authority's decisions are subject to review by the Danish Minister for Industry, Business and Financial Affairs.
The expanded rules align Denmark's regime with the EU's Foreign Direct Investment Screening Regulation, which requires member states to maintain and operate screening mechanisms for transactions affecting security and public order. Denmark's domestic legislation goes further than the EU minimum in several respects, particularly regarding the definition of sensitive sectors and the reach of the voluntary notification window.
Who is affected: thresholds and sector criteria
The notification obligation is triggered by a combination of investor origin, acquisition size, and sector sensitivity. International companies must assess all three dimensions before proceeding.
Investor origin. Non-EU and non-NATO investors face the broadest mandatory notification duties. Following the 2024 amendments, EU and EEA investors are now also subject to mandatory notification when acquiring influence in the most sensitive critical infrastructure and dual-use technology sectors.
Ownership thresholds. Mandatory notification is required when a transaction results in the investor holding at least 10% of share capital or voting rights in a Danish target. Additional notification duties arise at the 20%, 33%, 50%, 66%, 90%, and 100% ownership levels. Each threshold crossing – not just the initial acquisition – may trigger a fresh notification requirement.
Sensitive sectors. The sectors subject to mandatory notification now include:
- Defence and dual-use technology, including cybersecurity and advanced manufacturing
- Critical infrastructure such as energy networks, water supply, and transport systems
- Critical technology, including artificial intelligence, semiconductors, and quantum computing
- Media organisations with significant audience reach
- Financial market infrastructure, including payment systems and investment fund operators
Companies active in securities offering, IPO processes, or listing requirements for Danish-regulated markets should note that financial market infrastructure now falls squarely within scope. Disclosure obligations under capital markets legislation intersect with investment screening duties, and transactions involving investment fund structures may require parallel notifications under both regimes.
A voluntary notification window also exists for transactions that do not meet the mandatory thresholds but involve a target in a sector that could plausibly affect national security. Using this window provides legal certainty and protects against post-closing intervention.
For international companies with exposure to Danish capital markets and cross-border banking structures, the interaction between screening rules and financial regulatory requirements adds a further layer of complexity. A detailed review of these intersections is available through our banking and finance practice in Denmark.
To receive an expert assessment of your transaction's notification obligations in Denmark, contact us at info@ferrazwhitmore.com.
Immediate actions for international companies
Non-compliance carries serious consequences. The Danish Business Authority may order mandatory unwinding of a completed transaction, impose fines on the acquiring entity, and refer cases for criminal investigation in the most serious instances. Acting before completion is always preferable to remediation after the fact.
The following five steps should be taken without delay by any international company with Danish acquisitions planned or in progress.
First, conduct a sector classification review. Determine whether the Danish target operates in one or more of the sensitive sectors listed under the investment screening legislation. This analysis should draw on the target's actual business activities, not merely its registered corporate objects. Many companies operate at the intersection of two or more sensitive sectors.
Second, assess the applicable ownership threshold. Map the proposed transaction against each mandatory notification threshold. If the acquisition will result in crossing the 10% level – or any higher threshold – a notification obligation likely applies. Indirect acquisitions through holding structures are also within scope.
Third, prepare the notification file. The Danish Business Authority requires detailed information about the investor, its ownership chain, ultimate beneficial owners, and the commercial rationale for the transaction. Assembling this file takes time. Beginning early reduces the risk of deal delay.
Fourth, build the screening timeline into the deal timetable. The Danish Business Authority has a review period of up to 60 business days from receipt of a complete notification. With the possibility of extension in complex cases. Transactions must not close before clearance is obtained. Failing to account for this window has caused closings to be delayed significantly in recent transactions.
Fifth, consider the voluntary notification route for borderline cases. If there is genuine uncertainty about whether the mandatory threshold applies, voluntary notification is the prudent path. It removes the risk of post-closing intervention and provides a formal clearance decision that binds the authority.
Companies with existing Danish investments should also review whether any planned restructuring, secondary transfers, or new capital injections will cross a fresh ownership threshold and thereby trigger a new notification duty. Restructuring that looks purely internal may still engage the screening rules if it results in a new entity holding shares above a threshold level.
For companies engaged in cross-border capital markets activity involving Danish securities, prospectus preparation, or structured investment fund transactions, the intersection of securities legislation and investment screening rules requires careful mapping. Our capital markets practice in Denmark advises on both dimensions concurrently. Clients who have encountered comparable regulatory developments in other jurisdictions may find it useful to compare the Danish regime with analogous changes covered in our alert on investment screening in Portugal.
About Ferraz & Whitmore
Ferraz & Whitmore is an international law firm based in Lisbon, advising business clients across 46 jurisdictions. Our capital markets and regulatory team combines Portuguese civil law expertise with English common law tradition to deliver cross-border legal solutions on foreign investment screening. Securities regulation. Additionally, market access matters in Denmark and across the EU. As a law firm with deep experience across European markets, we advise international entrepreneurs, institutional investors, and in-house legal teams who need results-oriented counsel when engaging a lawyer in Denmark or any Nordic jurisdiction. The firm's practitioners have experience before financial regulatory authorities across 15 practice areas, and our Lisbon base provides direct access to both EU regulatory frameworks and Atlantic market structures. To discuss how Denmark's updated investment screening rules apply to your transaction, contact us at info@ferrazwhitmore.com.
Disclaimer: This publication is provided for informational purposes only and does not constitute legal advice. The information herein should not be relied upon as a substitute for professional legal counsel tailored to your specific circumstances. Ferraz & Whitmore assumes no liability for actions taken or not taken based on the contents of this material. For advice regarding your particular situation, please contact info@ferrazwhitmore.com.