In 2025, global M&A value rose 41% from 2024, to $4.8 trillion, making 2025 the second-highest M&A value year on record.[1] Overall deal count fell, but deal sizes increased, with a record-breaking number of $10 billion+ deals. The technology sector once again led the way, with a focus on AI and related infrastructure.
The year started with optimism, which quickly gave way to a slowdown in dealmaking due to macro uncertainty and policy disruption. As the year went on, however, interest rate expectations improved, equity markets rose, and dealmakers learned to manage, or at least live with, evolving tariffs, geopolitical developments, and heightened foreign investment and other regulatory scrutiny.
In this alert, we review the M&A markets in 2025 and the key legal and regulatory issues and trends that will affect deals in 2026.
Global Activity
North America represented just over half of global activity, while Europe and APAC each accounted for roughly one-fifth.
Key Sectors
Looking Forward
We expect 2025’s momentum to carry into 2026, albeit with continued selectivity and sensitivity to macro and regulatory developments.
The second half of 2025 marked a decisive return of confidence at the top end of the market, laying the groundwork for a more balanced, but still selective, M&A environment in 2026.
In 2025, companies rapidly expanded their commercialization of AI and use of AI across increasing business functions. Companies face many questions regarding the evolving technology, including questions related to data collected and used in connection with AI, including potential privacy and infringement issues, as we discussed in our alert last year.[4] Buyers and potential targets also must consider the regulatory and other implications of companies’ expanded internal deployment of AI. A few more common issues are highlighted below.[5]
AI-based hiring tools continue to draw scrutiny, driven by concerns about algorithmic discrimination, fairness, and transparency. New York City’s automated hiring law, for example, requires employers using “Automated Employment Decision Tools” to conduct annual bias audits. Companies should implement AI tools consistent with existing employment laws, such as requirements to avoid discrimination and address disability accommodations, wage and hour, and collective bargaining.
Companies are finding that internal risk also can arise from “shadow AI,” i.e., employees using AI tools without formal approval from the company. Organizations may lack visibility into what tools employees are using, what information is being ingested by these tools, and how external systems handle or retain that data.[6] Companies also have to contend with a growing patchwork of laws requiring various notice and opt-out rights for individuals whose personal data might be subject to AI tools.
Buyers should pressure test whether targets have adequate internal governance structures, including whether they provide permitted tools with permitted use cases, maintain inventories of AI systems, and implement technical and security safeguards.[7]
“Buyers and potential targets also must consider the regulatory and other implications of companies’ expanded internal deployment of AI.”
Companies operating in regulated industries—such as financial services and healthcare—face elevated expectations for responsible AI use. These organizations must understand how AI systems influence regulated activities, evaluate the accuracy and reliability of AI‑assisted decisions, and maintain appropriate human oversight. Regulators increasingly expect documentation demonstrating how AI tools operate, how they use data, and how associated risks are identified and managed.[8]
Enforcers and litigants have increasingly focused on the extent to which companies may be able to use AI to entrench market positions or expand market power or otherwise may try to control access to data or other inputs on which AI is dependent. For example, U.S. agencies have signaled continued interest in whether algorithmic pricing systems can facilitate parallel conduct or tacit coordination, especially where multiple market participants rely on the same or similar tools, those tools rely on non-public information, or where the internal workings of those tools are otherwise opaque.[9] This translates to increased focus on how internal pricing or decision-support AI tools function and how outputs are generated, and the practices and transparency of third-party tools used by the target.
In the midst of the state efforts to regulate AI, President Trump in December issued an executive order directing White House advisors to engage Congress on developing federal legislation to establish a “uniform Federal policy framework for AI” that would preempt state AI laws.[10] The executive order also instructs the U.S. Attorney General to create an “AI Litigation Task Force” to challenge state AI laws that are inconsistent with the policy of U.S. “global AI dominance.” The executive order has not preempted or staved off all state regulations,[11] and federal legislation has yet to materialize. In the meantime, we expect buyers to continue to scrutinize compliance with state AI laws by AI developers and deployers, as well as U.S. federal and non-U.S. requirements.
The integration of AI into core business functions and customer-facing offerings, combined with growing privacy, employment, antitrust, and other regulatory risks, is reshaping M&A diligence and deal terms. Buyers increasingly request information about how a target uses AI and data in connection with AI and about the target’s AI governance and compliance. Buyers also increasingly perform diligence deep dives where unauthorized or high‑risk AI use is identified. AI diligence now commonly addresses the existence of AI governance and policies, AI contract terms, tool inventories, data flows, AI risk assessments and bias audits, and vendor reliance. Buyers also are tailoring reps and warranties to address AI usage and seeking indemnities for potential AI-related exposures. Representation and warranty insurance (“RWI”) underwriters similarly are requesting more detail on data sourcing, model governance, and internal controls, and some carriers are beginning to consider AI-specific exclusions.
The new U.S. administration has changed many things about the merger review process, but some expected changes have not materialized. In the EU, merger review has remained largely the same, but some changes may be on the horizon.
“The new U.S. administration has changed many things about the merger review process.”
Though many stakeholders had hoped that the new administration might rescind or revise the 2023 Merger Guidelines and the new HSR Form, neither came to pass and we expect both to remain in effect. The new HSR form requires significantly more information, documents, and time from both parties and counsel.
After nearly a four-year hiatus, the administration reinstituted a policy of granting early termination of the HSR waiting period for facially non-problematic deals. As of the end of 2025, the administration had granted early termination to roughly 300 deals.
The administration also has been willing to enter into settlements of potentially problematic deals—through the end of 2025, the agencies had entered into around half a dozen settlements. Moreover, despite a stated preference for structural remedies, the agencies have been willing to agree to behavioral remedies. For example, in Boeing’s proposed acquisition of Spirit Aerospace, the FTC required divestitures, but also required Boeing to provide transitional services to Airbus and another company, to continue to sell products and services to competing contractors for military aircraft programs and not discriminate in favor of Boeing, and to protect those third-party companies’ confidential information.[12]
The DOJ and FTC continue to challenge transactions in court. Such actions include Edwards Lifesciences’ proposed acquisition of JenaValve in the medical device space and Henkel’s proposed acquisition of Liquid Nail in the construction adhesive space.[13]
The use of lobbyists has increased and so has the success of this strategy. For example, in early 2025, the DOJ agreed to a settlement of its challenge to HPE’s acquisition of Juniper Networks, which many believe was the direct result of lobbying efforts by the parties.
States have been enacting their own “mini HSR” laws, under which parties must send a copy of their HSR filing to the State Attorney General if they meet certain revenue thresholds within the state or operate within certain industries. Colorado’s and Washington’s laws went into effect last summer and other states, including California, are considering similar laws.
In 2025, the European Commission (“EC”) engaged in public consultations looking to update their merger guidelines, focusing on: (i) competitiveness and resilience, (ii) assessing market power using structural and other market features, (iii) innovation and other dynamic elements, (iv) sustainability and clean technologies, (v) digitalization, (vi) efficiencies, and (vii) public policy, security, and labor markets. We expect a draft of the new merger guidelines in 2026.[14]
The EC remains active in the merger control space, clearing 15 deals subject to remedies and demonstrating a clear preference for structural remedies. Further, the EC seems more open to considering innovation benefits, as demonstrated by its clearance of Nokia’s acquisition of optical networking company Infinera.
Another of the world’s major enforcers, China’s State Administration for Market Regulation (“SAMR”), had a particularly busy year. In 2025, SAMR issued six adverse decisions on deals, imposing conditions on five deals across several industries. The agency also ordered the unwinding of the acquisition of Shangdong Huatai Pharma by Wuhan Yongtong Pharma that it reviewed using its call-in power to review non-notifiable deals. This uptick in activity compares against one adverse decision in 2024. The agency also offered a degree of transparency, publishing analytical summaries of three deals it unconditionally approved, as well as the decisions related to a conditional approval.
The Trump administration is reshaping inbound and outbound investment policy and trade and export controls to (i) facilitate foreign investment and the diffusion – and global adoption – of U.S. technology, and (ii) mitigate national security risks, including to keep U.S. technology out of the hands of “foreign adversaries.” Time will tell which priority takes center stage in shaping U.S. policy.
President Trump in February issued the America First Investment Policy, key features of which include:
“Time will tell which priority takes center stage.”
The Treasury Department established its outbound investment security program (“OISP”),[16] prohibiting, or requiring notification regarding, certain outbound investments to “covered foreign persons” (focused on persons associated with “countries of concern,” i.e., Chinese and Chinese-owned persons) engaged with specified sensitive technologies: semiconductors and microelectronics, quantum information technologies, and AI systems. The Comprehensive Outbound Investment National Security (“COINS”) Act of 2025 then revised the OISP to:
M&A activity in the AI sector itself was a key element of the global M&A resurgence in 2025.
Many headline-making deals were acquisitions by large platforms at premium prices to secure a small number of elite researchers, engineers, and founders.
Regulators in the U.S. and Europe have scrutinized these types of transactions, especially those involving big tech AI transactions. For buyers, that means careful antitrust and foreign investment analysis even for “non-control” structures.
If the front page of AI M&A in 2025 was about models and founders, the back page was all about infrastructure. Hyperscalers, miners-turned-cloud-providers, and financial sponsors raced to secure and scale the physical backbone of AI: power, land, data centers, and specialized hardware.
Alongside data centers, the semiconductor ecosystem consolidated around AI. Chipmakers used acquisitions to move “up the stack” into systems, networking, and software, positioning themselves as end-to-end AI infrastructure providers rather than component vendors.
For deal lawyers, these transactions raise issues more familiar from energy and infrastructure deals: long-dated offtake commitments, complex landlord-tenant and power-purchase arrangements, local permitting and community opposition, and environmental scrutiny around energy and water use.
2025 AI dealmaking reshaped the toolkit itself. Much of the most consequential AI activity is not structured as traditional M&A at all:
These structures are often a response to high valuations, regulatory constraints, and the reality that AI assets are volatile and hard to value on traditional metrics. Earn-outs, milestone-based consideration, and performance-linked covenants (for example, around model quality, uptime, or safety) are increasingly used to bridge gaps between AI “hype” and demonstrated cash flows.
“Earn-outs, milestone-based consideration, and performance-linked covenants … are increasingly used to bridge gaps between AI ‘hype’ and demonstrated cash flows.”
Taken together, AI M&A in 2025 was less about buying operating companies in the traditional sense and more about securing talent and infrastructure. The deals that mattered most were often hybrids—part acquihire, part infrastructure financing, part strategic partnership. For buyers and sellers, that means more creativity in structuring, more complexity in diligence, and a more crowded regulatory field—but also a wider set of levers through which to get AI transactions done. These trends – and no doubt additional structuring innovations reflecting the rapid changes in the technology and business – will characterize AI M&A in 2026.
2025 brought a wave of important tax developments—most notably, in the One Big Beautiful Bill Act (“OB3”) – that will affect the values of applicable targets and should be considered in structuring transactions as well.
“Tax developments… affect the values of applicable targets and should be considered in structuring transactions as well.”
In March 2025, following an unusually vocal discussion, Delaware amended its corporations statute to create procedural safe harbors for transactions with or involving a controlling stockholder.
The amendments came after criticism of several Delaware court opinions finding certain less-than-majority holders to be controlling stockholders (even if only for purposes of a challenged transaction) and finding fiduciary lapses in transactions with controlling stockholders.[21] That criticism evolved into calls for “DExit” and provided opportunities for other states, including Texas[22] and Nevada,[23] to invite companies to redomicile. Several Delaware corporations, including Tesla, Tripadvisor, and Dropbox, redomiciled, though the great majority of Delaware corporations have remained in Delaware, and many new corporations continue to choose to incorporate in Delaware.
The safe harbors are based on approvals by:
The safe harbors require other procedures, including information disclosure to the committee and the stockholders. The committee must be comprised of persons the board has determined to be disinterested, but (unlike under Delaware judicial doctrine) the safe harbor will apply even if a court later determines that one or more directors on the committee is not disinterested, so long as the committee approval is by a majority of the disinterested directors on the committee. The committee must act in good faith, without gross negligence.
Before the amendments, to avoid review under the Delaware courts’ stringent entire fairness standard, a transaction process would have to comply with the judicially created “MFW” framework. MFW requires, for all such transactions, approval by both a committee of disinterested directors and the disinterested stockholders, and imposes other procedural hurdles, such as that the transaction must be conditioned on such committee and stockholder approvals “ab initio,” before the start of substantive negotiations.
In addition, the amendments provide that:
The amendments provide welcome clarity and may reduce the litigation exposure of a large or controlling stockholder in applicable transactions. However, many of the details of their application have yet to be tested, just as many of the details in the application of MFW had to be developed in the context of actual transactions. Also, the amendments have been challenged under Delaware’s constitution as an impermissible limit on the application of equity by the Delaware courts. The Delaware Supreme Court has heard arguments in the challenge but has not yet ruled.
“The amendments provide welcome clarity and may reduce the litigation exposure of a large or controlling stockholder in applicable transactions.”
Earnouts have become increasingly popular as tools for bridging valuation gaps. That popularity rose further in 2025, with a significant increase in the use of contingent value rights in acquisitions of public companies, particularly life sciences companies.
Earnouts, though, often lead to disputes. Particularly as to whether buyers provided any post-closing business support required by acquisition agreements, as we discussed in last year’s alert. Similar litigation in 2025 provided further lessons for parties considering earnouts.
Last year, we discussed a court’s finding that a buyer had failed to use “commercially reasonable efforts,” as defined in an acquisition agreement, and had terminated a product program that could have provided $800 million in earnouts.[24] In 2025, the court determined damages that reflected the “expected value” of the earnout payments by weighting each milestone amount by its probability of success.[25] The court reviewed probabilities from several sources, including expert witnesses and stockholder estimates, and found that the buyer’s own early estimates provided the strongest evidence of probabilities. The court awarded damages of about $180 million, on top of the $130 million it had awarded previously for the first milestone. Parties considering transactions with earnouts should keep a court’s potential retrospective review in mind when creating records of expected values.
“Earnouts, though, often lead to disputes...”
In a dispute over an earnout payment tied to a milestone that the parties agreed had been met, the buyer argued that it nonetheless was excused from paying, because the purchase agreement stated that the business shall be conducted after closing in accordance with the buyer’s practices, but the seller’s founder, who was employed by the buyer to manage the business, had failed to so conduct the business.[26] The court, however, found that the relevant statement addressed how the buyer will run the business after closing and did not impose obligations on the seller’s founder, noting that the statement was included in the purchase agreement along with protections for sellers requiring the buyer to operate the business in a manner not intentionally designed to avoid or reduce earnout payments. The court likewise declined to condition the earnout on compliance by the seller’s founder with his employment agreement with the buyer, since the purchase agreement was conditioned only on the execution of the employment agreement. While it undoubtedly is difficult to anticipate all future contingencies, buyers and sellers should specify their desired terms as fully as possible and not count on a court to imply further conditions.
Despite a changing landscape and a slower start to the year reflecting the subdued M&A market, activism campaigns globally in 2025 exceeded 2024’s record-breaking levels. “Occasional activists” – institutional investors, individuals, and others who are not dedicated activist funds and do not regularly use activist tactics – continued to play an important part, launching campaigns consistent with their elevated activity in 2024, above their more historic levels.[27]
“The rise in private settlements suggests that both companies and activists are less willing to bear the costs and distractions of public campaigns.”
[1] All data as of December 15 and courtesy of Mergermarket, except as otherwise indicated.
[2] For a copy of Morrison & Foerster’s Tech M&A Survey, conducted in partnership with Mergermarket, released Dec. 9, 2025, see New Directions: AI Ubiquity, Risk Exposure, and Pursuing Scale in Global Tech M&A.
[3] For guidance and information about the latest and most significant developments in AI, see Morrison & Foerster’s AI Resource Center.
[4] See MoFo Client Alert, M&A in 2024 and Trends for 2025.
[5] For guidance and information about the latest and most significant developments in AI, including links to laws, regulations, and regulators by jurisdiction, visit MoFo’s Artificial Intelligence Resource Center.
[6] See MoFo Privacy Minute, Do You Know What AI Tools Are Installed on Your Company’s Systems?, Sept. 12, 2025.
[7] See MoFo Insight, 5 Ways to Address the Legal Risks of Employee AI Use, in Law360, Oct, 15, 2025.
[8] See, for example, MoFo Insight, AI Compliance Tips for Investment Advisers, Oct. 2025.
[9] See MoFo Insight, Antitrust, Algorithms, and AI: Increased Scrutiny, and Unanswered Questions, in Mealey’s Litigation Report (Apr. 2025).
[10] See MoFo Client Alert, Executive Order Takes Aim at State AI Laws, Dec. 13, 2025.
[11] For example, see New York’s recently enacted RAISE Act regulating frontier AI models, discussed in MoFo’s Jan. 5, 2026 client alert.
[12] FTC Requires Boeing to Divest Several Spirit Assets to Proceed with Merger, Fed. Trade Comm’n (Dec. 3, 2025).
[13] FTC Challenges Anticompetitive Medical Device Deal, Fed. Trade Comm’n (Aug. 6, 2025); FTC Sues to Stop Loctite, Liquid Nails Construction Adhesive Merger, Fed. Trade Comm’n (Dec. 11, 2025).
[14] Review of the Merger Guidelines, European Comm’n.
[15] Executive Order, Regarding the Acquisition of Certain Assets of EMCORE Corporation by HieFo Corporation, Jan.2, 2026.
[16] See MoFo Client Alert, Up and Running: Treasury Publishes Final Rules for Outbound Investment Security Program, Oct. 31, 2024.
[17] See MoFo Client Alert, A Call to Action: President Trump’s Policy Blueprint for AI Development and Innovation, July 30, 2025.
[18] See MoFo Client Alert, AI Diffusion Rule Out but BIS Increases Compliance Obligations for Companies, June 17, 2025.
[19] See MoFo Client Alerts, BIS Adopts 50% “Affiliates Rule”: Implications for Compliance and Enforcement, Oct. 1, 2025, and United States and China Reach Trade Agreement: Takeaways for Export and Supply Chain Controls, Nov. 13, 2025.
[20] See MoFo Client Alert, DOJ Issues First-Ever Declination Under Corporate Disclosure M&A Policy, June 24, 2025.
[21] In one of the most prominent of such cases, the Delaware Court of Chancery ordered rescission of a 2018 equity compensation plan awarded by Tesla to Elon Musk, after finding that Musk, holder of 21.9% of Tesla’s voting power, exercised transaction specific control with respect to the grant and that the grant was not entirely fair to Tesla (Tornetta v. Musk, Del. Ch. Jan. 30, 2024). The Delaware Supreme Court reversed the rescission order, finding that it was not an appropriate remedy, even if the justices had “varying views on the liability determination” (In re Tesla, Inc. Deriv. Lit., Del. Supreme Dec. 19, 2025).
[22] Texas amended its corporations statute in 2025 to, among other things, allow corporations in their governing documents to waive jury trials for internal entity claims and, for public corporations and for private corporations that opt in, codify the business judgement rule and provide that the presumption could be overcome only by showing fraud, intentional misconduct, or knowing violations of law (or an ultra vires act). Texas had previously established a specialized Business Court that began operations in 2024.
[23] Nevada amended its corporations statute in 2025 to, among other things, allow corporations in their articles of incorporation to waive jury trials for internal corporate actions. Nevada also is considering a specialized business court.
[24] SRS v. Alexion Pharmaceuticals (Del. Ch. Sep. 5, 2024).
[25] SRS v. Alexion Pharmaceuticals (Del. Ch. June 11, 2025).
[26] Arthur J. Gallagher v. Agiato (Del. Ch. July 31, 2025).
[27] Barclays 2025 Review of Shareholder Activism; see MoFo Client Alert, Occasional Activists and the Evolving Landscape of Shareholder Activism in 2025, Sept. 26, 2025.
[28] Lazard Annual Review of Shareholder Activism 2025.
[29] Barclays 2025 Review of Shareholder Activism.
[30] See Fact Sheet: President Donald J. Trump Protects American Investors from Foreign-Owned and Politically-Motivated Proxy Advisors, Dec. 11 2025.
[31] In August, the federal district court for the western district of Texas preliminarily enjoined enforcement of the law and set a trial date for February 2026. See Institutional Shareholder Services Inc. v. Paxton and Glass, Lewis & Co., LLC v. Paxton.