SAKURA Law Office | Legal Update by Managing Partner Kenshiro Michishita
September 24, 2026
SAKURA Law Office | Kenshiro Michishita, Managing Partner
SAKURA Law Office has published the thirteenth edition of the Legal Update series by Managing Partner Kenshiro Michishita: “Acquiring a Japanese Company — Transaction Structure, Legal Due Diligence, SPA, FEFTA, Competition Law and Closing Practice (2026).”
For foreign strategic buyers, private equity sponsors and other international investors, acquiring a Japanese company can provide an efficient route to market entry, technology, talent, customer relationships, distribution channels and supply-chain capabilities. A successful cross-border acquisition, however, requires substantially more than negotiating a purchase price and signing a share purchase agreement. The buyer must identify the assets and business it intends to acquire, understand the target’s legal risk profile, select an executable transaction structure, integrate regulatory approvals into the timetable, allocate identified risks by contract and ensure that the acquired business can operate effectively after closing.
Japan’s M&A framework has also changed materially in 2026. Amendments to the tender offer and large shareholding reporting regimes took effect on May 1, 2026. In addition, Japan’s revised foreign investment screening framework under the Foreign Exchange and Foreign Trade Act (FEFTA) is scheduled to enter into force in 2027. For acquisitions of listed Japanese companies, the Ministry of Economy, Trade and Industry’s Guidelines for Corporate Takeovers continue to influence board conduct, transparency and shareholder decision-making.
Against this background, foreign investors should not approach Japanese M&A as a collection of disconnected legal checks. Corporate law, securities regulation, antitrust law, FEFTA, sector-specific regulation, employment law, data protection, intellectual property, disputes and compliance must be integrated into one transaction process from the earliest structuring stage through signing, closing and post-merger integration.
This Legal Update explains the principal legal issues that foreign companies, overseas private equity funds, venture investors and other foreign investors should consider when acquiring a Japanese company, based on Japanese law and public materials available as of September 24, 2026.
Executive Summary
The first question in a Japanese acquisition is not which warranty clause should appear in the SPA. It is what the buyer is actually acquiring. A share acquisition generally preserves the target company’s legal identity, contracts, permits, employees, assets and liabilities, while an asset acquisition may allow the buyer to select assets and liabilities but often requires separate transfers, consents and licensing work.
Legal due diligence is not an exercise in producing the longest possible list of problems. Its purpose is to determine how identified risks should be reflected in price, structure, conditions precedent, representations and warranties, indemnities, pre-closing remediation or post-closing integration.
Listed-company acquisitions require an additional layer of regulation. Following the May 1, 2026 reforms, certain on-market acquisitions may fall within Japan’s tender offer rules and the principal control-related threshold has been revised to 30%. The large shareholding reporting regime also requires careful analysis once holdings exceed the relevant statutory thresholds.
Foreign investors should address FEFTA at the outset, not shortly before closing. The target’s business and technology, investor attributes, ultimate ownership, links to foreign governments, shareholding percentage, board nomination rights and information access can all be relevant to the foreign investment analysis.
SAKURA Law Office and Managing Partner Kenshiro Michishita consider cross-border M&A most effective when structuring, due diligence, contractual risk allocation, regulatory analysis, closing mechanics and post-merger integration are designed as a single transaction architecture rather than separate legal workstreams.
1. Choosing the transaction structure — buying the company or buying the business
There is no single legal form for acquiring a Japanese business. The most common structure for a privately held company is a share acquisition from existing shareholders. Depending on the deal objectives, however, an asset transfer, corporate split, share exchange or other corporate reorganization may be preferable. Acquisitions of listed companies may involve tender offers or other capital markets transactions.
In a share acquisition, the shareholders change but the target company remains the same legal entity. Its contracts, employment relationships, permits, assets and liabilities generally remain with the company. This continuity can facilitate execution, but historical liabilities, regulatory issues, employment claims, tax exposures and litigation also remain with the target.
An asset acquisition may allow the buyer to select particular assets, contracts and liabilities, but often requires separate transfer mechanics, counterparty consents, permit analysis and employment arrangements. The legally simplest-looking structure is not always the commercially safest structure.
Transaction structure should therefore be selected by reference to the business to be acquired, risks to be excluded, regulatory licences, employee arrangements, third-party consents, FEFTA and antitrust requirements, financing and the investor’s intended exit strategy.
2. Private-company M&A and listed-company M&A require different transaction processes
Private-company transactions are generally negotiated bilaterally with identified shareholders. The parties must review the target’s articles, transfer restrictions, class shares, shareholder agreements and corporate approvals.
Acquiring control of a listed Japanese company adds the Financial Instruments and Exchange Act, tender offer rules, large shareholding reporting, insider trading rules, exchange rules and timely disclosure obligations. Board conduct and information provided to shareholders are also influenced by METI’s Guidelines for Corporate Takeovers.
Foreign buyers should identify at the outset whether the target is listed or unlisted and design the transaction process accordingly.
3. At the outset — NDA, information control and insider information
M&A discussions normally begin with a confidentiality agreement before the target or seller opens the data room. The NDA should define confidential information, permitted purposes, permitted recipients, disclosures to advisers and financing sources, information barriers, return and deletion obligations and survival provisions.
Where a listed company or listed corporate group is involved, negotiations and non-public business information may constitute material non-public information. Access by headquarters personnel, investment committees, financial advisers, lenders and other participants should be controlled, and securities trading restrictions should be considered throughout the process.
In transactions between competitors, diligence may expose competitively sensitive pricing, customer, margin or strategy information. Clean-team arrangements may be appropriate to restrict access by operating personnel.
4. LOI and MOU — make the binding effect explicit
A letter of intent, memorandum of understanding or basic agreement may address proposed price, structure, exclusivity, due diligence, timetable, costs and regulatory approvals.
The critical issue is to identify which provisions are binding and which are not. It is common for price and the acquisition obligation itself to remain non-binding while confidentiality, exclusivity, costs, governing law and certain procedural obligations are binding.
Where headquarters approval, an investment committee, acquisition financing, FEFTA, antitrust or other regulatory approvals will be required, the expected conditions and timing should be addressed from the LOI stage.
5. The purpose of legal due diligence — convert facts into transaction protections
Legal due diligence should not simply catalogue issues. It should identify the legal risks that matter to enterprise value and determine whether those risks should affect price, structure, closing conditions, representations and warranties, indemnification, covenants, pre-closing remediation or PMI.
A change-of-control clause in a key customer or licence agreement illustrates the point. Merely describing the clause in a diligence report is not enough. The deal team must decide whether counterparty consent should be a closing condition, whether there should be a price adjustment, whether a replacement contract is needed or whether the risk is acceptable.
The same principle applies to unpaid overtime, licensing deficiencies, intellectual-property chain-of-title defects, data protection issues, litigation, bribery or other compliance concerns.
6. Corporate due diligence — can the seller legally transfer the shares
Corporate diligence includes the articles of incorporation, commercial registry, shareholder register, historical issuances and transfers, board and shareholder minutes, class shares, options, convertible securities and shareholder agreements.
The buyer should confirm that the seller validly owns the shares, that no third-party rights attach to them and that all required approvals can be obtained. In private Japanese companies, transfer restrictions are common.
The historical validity of capital increases, treasury share transactions and reorganizations may also be significant because defects can affect ownership and governance after closing.
7. Material contracts — change of control, termination, exclusivity and MFN provisions
Material customer, supplier, distributor, licensing, cloud, JV and financing contracts may represent a substantial part of the target’s enterprise value.
Review should address term, termination rights, renewal, price adjustment, minimum purchase commitments, exclusivity, non-compete obligations, most-favoured-nation clauses, liability limits, intellectual property, confidentiality, governing law and dispute resolution.
Change-of-control provisions are particularly important because they may require consent or trigger termination even though the target remains the same legal entity after a share acquisition.
8. Licences and regulated businesses — can the business continue after closing
Businesses in finance, payments, crypto-assets, insurance, communications, pharmaceuticals, healthcare, staffing, employment placement, real estate and other regulated sectors may require licences, registrations or notifications.
A share acquisition may preserve the target entity and its licences, but changes in ownership, directors or control may still trigger notification or approval requirements. Asset deals may require new licences rather than automatic succession.
Regulatory diligence should therefore ask not only whether a licence exists, but whether the transaction changes the licensing position and whether the business can operate without interruption at closing.
9. Employment diligence — identify liabilities and design the integration
Employment diligence generally covers employment agreements, work rules, wages, bonuses, working hours, overtime, manager classification, fixed overtime arrangements, unions, harassment, disciplinary matters, terminations, social insurance and disputes.
In a share acquisition, the employer remains the target company and employment relationships generally continue. In an asset transfer or corporate split, different statutory and contractual rules apply to employee transfers.
Foreign buyers should also consider post-closing integration. Global compensation, grading, work-rule or retirement policies cannot simply be imposed without regard to Japanese employment law restrictions on adverse changes to working conditions.
10. IP, IT and data diligence — does the value actually belong to the target
For technology and IP-intensive businesses, patents, trademarks, copyrights, software, trade secrets, data and domains may represent core enterprise value.
The buyer should confirm chain of title for employee, officer and contractor-created IP. Software diligence should address open-source licences, third-party code, source-code governance and material licence restrictions. Where AI is used in products, training data, models, outputs and contracts with external AI providers may also be relevant.
Data diligence should review purposes of use, privacy notices, third-party transfers, outsourcing, cross-border transfers, security measures, data breaches and data subject requests under Japan’s APPI.
11. Compliance diligence — bribery, competition, whistleblowing and misconduct
Historical misconduct can become an acquisition liability through regulatory sanctions, damages, contract termination or reputational harm.
Depending on the target’s business, diligence may cover bribery, cartels, accounting irregularities, consumer advertising, subcontracting and transaction fairness, export control, AML, anti-social forces and other sector-specific matters.
Internal reporting records and internal investigations also matter. The key question is not the number of reports but whether significant concerns were investigated and remediated appropriately, particularly where senior management was involved. Japan’s amended Whistleblower Protection Act takes effect on December 1, 2026.
12. Litigation and disputes — look beyond filed cases
Disputes diligence should cover pending litigation and arbitration, threatened claims, regulatory investigations, warning letters, major complaints, product incidents, IP disputes and employment matters.
Even resolved disputes may impose continuing obligations through settlement agreements, confidentiality provisions, licences or remediation commitments.
Where a major dispute is identified, the solution may include a specific indemnity, escrow, holdback, pre-closing settlement or other tailored allocation rather than reliance on general warranties.
13. FEFTA — foreign buyers should analyse foreign investment screening from day one
Japan’s Foreign Exchange and Foreign Trade Act may require prior notification for certain acquisitions by foreign investors depending on the investor, target business and technology, shareholding level and related governance rights.
Japan’s 2026 FEFTA reforms, scheduled to take effect in 2027, strengthen the framework around indirect acquisitions, foreign-government influence, important technologies and post-investment risk controls.
FEFTA timing, waiting periods and any risk-mitigation measures should be integrated into closing conditions, long-stop dates, regulatory-efforts covenants and termination rights.
14. Antitrust and merger control — global deals can require JFTC analysis
Japan’s Antimonopoly Act requires prior notification for certain business combinations. For share acquisitions, notification may be required where the relevant domestic sales thresholds are met and the buyer’s voting rights cross the 20% or 50% thresholds.
Where notification is required, closing is generally prohibited during the statutory 30-day waiting period, subject to the applicable rules. Significant transactions may involve pre-notification consultation with the Japan Fair Trade Commission.
Even transactions below formal thresholds may attract review where the transaction value is significant and the parties have substantial Japanese activities or the transaction may affect competition in Japan.
15. Tender offer rules — apply the May 2026 reforms
The tender offer regime is central to acquisitions of listed Japanese companies. Reforms effective May 1, 2026 expanded the circumstances in which on-market transactions may be captured and revised the principal control-related threshold to 30%.
Accordingly, a buyer accumulating shares on market may still trigger tender offer obligations. Exemptions, partial tender offers, all-holders rules, offer periods and related requirements must be analysed transaction by transaction.
A tender offer transaction requires an integrated design covering price, number of shares, financing certainty, regulatory conditions, target board opinion and any subsequent squeeze-out.
16. Large shareholding reporting — separate disclosure obligations apply above 5%
The large shareholding reporting regime operates separately from the tender offer rules. A holder whose ownership of listed shares exceeds the statutory 5% threshold should consider filing obligations.
Amendments effective May 1, 2026 also revised aspects of the calculation rules, joint-holder concepts and important proposal activities. Acquisitions before a tender offer, arrangements with co-investors and activist-style engagement therefore require careful planning.
Acquisition strategy and disclosure obligations should be managed together.
17. METI’s Guidelines for Corporate Takeovers — how to approach listed-company acquisition proposals
METI’s 2023 Guidelines for Corporate Takeovers articulate principles concerning enhancement of corporate value and common shareholder interests, respect for shareholder intent and transparency.
Although the Guidelines are not legislation, they have become an important reference point for board conduct, evaluation of acquisition proposals, disclosure and shareholder decision-making in Japanese listed-company M&A. In 2026 METI also advanced interpretive materials, points and Q&A regarding the Guidelines.
A foreign bidder should be prepared to explain not only price, but also post-acquisition strategy, value creation, financing certainty and the expected impact on employees, customers and other stakeholders.
18. The SPA — a risk allocation instrument, not merely a price document
A share purchase agreement allocates transaction risk through price mechanics, representations and warranties, indemnities, covenants, conditions precedent, termination rights and liability limitations.
Purchase price mechanics may include fixed price, completion accounts or locked-box structures. Cross-border transactions may also require consideration of foreign exchange, funds flow and tax-related mechanics.
Specific diligence findings should not automatically be left to general warranties. Material risks may require specific indemnities, pre-closing remediation, escrow, holdbacks or price adjustment.
19. Representations and warranties — they do not replace due diligence
Representations and warranties commonly address title to shares, due organization, financial statements, material contracts, licences, employment, tax, IP, data protection, disputes and compliance.
The existence of warranties does not justify reducing diligence. Recovery may be constrained by liability caps, claim periods, baskets, disclosure exceptions and the seller’s creditworthiness.
Diligence and warranty protection should be designed as complementary tools.
20. Indemnities and liability limits — contractual entitlement is not the same as recoverability
SPAs often regulate indemnification for warranty breaches, covenant breaches and identified risks together with caps, survival periods, de minimis thresholds, baskets, loss definitions, indirect damages and insurance recoveries.
Where the seller is a fund or an SPV expected to wind down, recoverability must be considered separately from the existence of a contractual claim. Escrow, guarantees, parent support or warranty and indemnity insurance may be relevant.
In cross-border deals, the buyer should also consider where a claim can be pursued, under what law and against which assets any award or judgment could be enforced.
21. Signing to closing — interim covenants and preservation of business value
Where signing and closing are separated, the SPA normally contains interim covenants requiring the target to operate in the ordinary course and restricting major asset disposals, new debt, dividends, executive compensation changes, material contracts or other specified actions.
However, the buyer does not yet own the target. Excessive pre-closing control can raise gun-jumping and other competition-law concerns.
The drafting must therefore balance preservation of deal value with the target’s independent management before closing.
22. Conditions precedent — make approvals and remediation objectively workable
Conditions precedent may include FEFTA, antitrust and sectoral approvals or notifications, third-party consents, corporate approvals, agreed remediation and financing.
More conditions do not necessarily create a safer deal. The agreement should specify objective satisfaction standards, responsibility for obtaining each condition, required efforts, deadlines and consequences of failure.
For global transactions, Japanese regulatory conditions should be coordinated with foreign merger control and foreign investment approvals in a single closing timetable.
23. Closing — transfer legal title, consideration and operational control with precision
Closing may involve share transfer, payment, shareholder-register updates, delivery of share certificates where relevant, board changes, corporate approvals, registrations, release of security and delivery of closing documents.
Operational control can also require transfer of banking authority, digital certificates, seals, administrator credentials and other practical access rights.
A detailed closing checklist should ensure that legal ownership and practical control move together.
24. Post-merger integration — legal work does not end at closing
Following closing, governance, contracts, employment, data protection, IT, IP, whistleblowing, licences and FEFTA mitigation commitments may need to be integrated into the buyer group.
Items classified during diligence as post-closing remediation should be assigned to owners and deadlines. Otherwise, diligence findings can simply remain in the report without implementation.
Global policies should also be adapted to Japanese law and employment practice rather than imposed mechanically.
25. SAKURA Law Office’s perspective on cross-border M&A
The central task in cross-border M&A is not to recite every potentially relevant statute. It is to understand the buyer’s strategic objective, identify the company, business, technology, people and contracts required to achieve that objective, and convert those requirements into an executable legal structure.
Legal advisers should then translate diligence findings into contractual and regulatory solutions, integrate approvals into the timetable and design post-closing governance. The role is not only to identify risk, but also to show how the transaction can proceed while controlling that risk.
SAKURA Law Office and Managing Partner Kenshiro Michishita advise on M&A, corporate law, international transactions, AI/IT, data protection, intellectual property, employment, crisis management and financial/Web3 regulation, and work with overseas headquarters, foreign counsel, financial advisers and accounting and tax professionals to integrate Japanese-law issues into global deal processes.
26. Frequently Asked Questions
Q1. What is the most common way for a foreign company to acquire a Japanese company?
For privately held companies, a share acquisition from existing shareholders is common. An asset acquisition or other reorganization may be preferable where the buyer wants to select particular assets or liabilities. Control acquisitions of listed companies may require tender offer procedures.
Q2. If we acquire shares, do the target’s contracts automatically continue?
Generally, the target remains the same legal entity and its contracts continue. However, change-of-control provisions may require consent or give counterparties termination rights. Material contracts should therefore be reviewed individually.
Q3. What does Japanese legal due diligence typically cover?
Corporate matters, material contracts, licences, employment, IP, IT and data protection, litigation, compliance, FEFTA and other sector-specific matters. The key question is how identified risks should be reflected in price, the SPA, closing conditions or PMI.
Q4. Is a FEFTA filing always required when a foreign company acquires a Japanese business?
No. The answer depends on the investor, target business and technology, ownership percentage and transaction structure. Certain designated-sector investments may require prior notification, so the analysis should begin early.
Q5. When is merger control notification required in Japan?
For share acquisitions, notification may be required when the applicable domestic-sales thresholds are met and the buyer crosses the relevant 20% or 50% voting-rights thresholds. Significant below-threshold transactions may also attract scrutiny depending on their impact in Japan.
Q6. Can a buyer avoid Japan’s tender offer rules by acquiring listed shares on market?
Not necessarily. Since May 1, 2026, certain on-market acquisitions can fall within the tender offer regime, and the principal control-related threshold has been revised to 30%.
Q7. Can representations and warranties replace legal due diligence?
No. Recovery for warranty breaches may be constrained by caps, claim periods, disclosures and seller credit risk. Diligence and contractual protection should be designed together.
Q8. Can a foreign buyer immediately change the acquired company’s employment terms to global standards?
Not necessarily. Japanese employment law restricts adverse changes to working conditions. Employment integration should be planned as part of PMI.
Q9. Must the SPA be governed by Japanese law?
Not necessarily. However, mandatory Japanese rules concerning Japanese companies, FEFTA, antitrust, licensing and securities regulation are not avoided merely by selecting foreign governing law. Governing law and dispute resolution should be chosen with enforcement and transaction realities in mind.
Q10. What information should a foreign buyer provide to Japanese counsel at the beginning of a deal?
The acquisition objective, target, intended ownership percentage, listed/unlisted status, indicative valuation, timetable, ultimate ownership of the buyer group, financing structure and post-closing governance rights. These points allow counsel to design the regulatory analysis, diligence scope and transaction structure.
27. About the Legal Update Series by Kenshiro Michishita
SAKURA Law Office publishes the Legal Update series through the profile of Managing Partner Kenshiro Michishita, addressing major legal issues affecting businesses and management in areas including M&A, corporate law, international transactions, AI and IT, data protection, intellectual property, crisis management, employment, whistleblowing and Web3/financial regulation.
This thirteenth edition follows Legal Update No. 11 on Japan’s FEFTA reform and No. 12, Doing Business in Japan 2026, and provides a comprehensive transaction-level guide to acquisitions of Japanese companies by foreign investors.
Future Legal Updates will address legal due diligence, SPAs, representations and warranties, litigation in Japan, recognition and enforcement of foreign judgments and international arbitration.
28. How SAKURA Law Office Can Assist with Acquisitions of Japanese Companies
SAKURA Law Office advises foreign corporates, overseas private equity and venture investors and other international investors on acquisitions and investments in Japanese companies, including transaction structuring, NDAs and LOIs, legal due diligence, negotiation of SPAs and shareholders’ agreements, FEFTA and antitrust matters, closing and post-merger integration.
We advise on listed-company tender offers, private-company share acquisitions, asset transfers, joint ventures, minority investments and startup investments according to the nature of the transaction.
We also work in English with overseas General Counsel, M&A teams, investment committees, foreign counsel, financial advisers and accounting and tax professionals to integrate Japanese-law issues into the global deal process.
29. Contact
For advice on acquisitions of Japanese companies, cross-border M&A, legal due diligence, SPAs, FEFTA, merger control, tender offers, joint ventures and other international corporate matters, please contact SAKURA Law Office.
When contacting us, please indicate that your inquiry concerns an acquisition or investment in a Japanese company so that it can be directed promptly to the appropriate lawyer.
SAKURA Law Office
Kenshiro Michishita, Managing Partner
4F Ark Hills South Tower, 4-5 Roppongi 1-chome, Minato-ku, Tokyo 106-0032, Japan
Tel: +81-3-6910-0692
Written and supervised by
Kenshiro Michishita
Managing Partner, SAKURA Law Office
Principal References
Ministry of Economy, Trade and Industry — Guidelines and Publications on M&A
Japan Fair Trade Commission — Mergers
Japan Fair Trade Commission — Threshold for Notification (By Sales in Japan)
Ministry of Finance — Inward Direct Investment Screening under FEFTA
Ministry of Finance — Materials concerning the FEFTA reforms scheduled to take effect in 2027
JETRO — Setting Up Business in Japan
This article provides general information based on Japanese law and public materials available as of September 24, 2026. It does not constitute legal advice concerning any specific transaction. The appropriate transaction structure, filing and approval requirements, tender offer analysis, merger control, contractual protections and other legal conclusions depend on the target’s listed or unlisted status, business, ownership, investor attributes, acquisition percentage, transaction structure, regulated activities, competitive conditions and other facts. Certain 2026 interpretive materials concerning METI’s Guidelines for Corporate Takeovers were still in the process of publication or consideration as of the date of this article. Specific transactions should therefore be assessed under the laws, regulations, guidelines and official materials in effect at the relevant time.