Synopsys / Ansys $35B Merger: FTC Review and Tech Sector Consolidation

In January 2024, Synopsys, Inc. announced a definitive agreement to acquire Ansys, Inc. for approximately $35 billion — a combination of cash and stock valued at $197.00 per Ansys share. The transaction represented the largest acquisition in the history of electronic design automation (EDA) software and one of the most significant technology sector mergers of the decade.

Synopsys is the world's leading provider of EDA software — tools used by semiconductor companies to design integrated circuits. Ansys is the world's leading provider of simulation software — tools used by engineers across industries to simulate the physical behavior of products before they are built. The combination would create a dominant player in the broader category of "silicon-to-systems" design software.

After a lengthy multi-jurisdictional antitrust review, the transaction closed in January 2025 following regulatory approvals from the U.S. Federal Trade Commission (FTC), the European Commission, and other global regulators — with significant divestitures required.

The FTC's review of the Synopsys / Ansys merger focused on horizontal overlaps — areas where both companies competed directly — and vertical concerns — areas where the combined company could potentially foreclose competitors.

Horizontal overlaps: Both Synopsys and Ansys offered certain overlapping products, particularly in:

• Semiconductor process design kits (PDKs)
• Certain simulation tools used in semiconductor design workflows
• Electronic system-level (ESL) design tools

Vertical concerns: The FTC examined whether the combined company could use its dominant position in EDA software to disadvantage competitors in adjacent simulation markets, or vice versa.

A distinctive feature of the FTC's analysis was its focus on innovation competition — not just current market shares, but the potential for the merger to reduce future innovation by eliminating a significant independent competitor. In technology markets, where today's niche player can become tomorrow's dominant platform, innovation market analysis has become increasingly important in merger review.

The FTC opened a formal investigation of the Synopsys / Ansys merger in mid-2024. The investigation focused on:

1. Overlapping product lines: The FTC identified specific product categories where Synopsys and Ansys competed directly and where the merger could reduce competition
2. Customer concerns: The FTC conducted extensive customer interviews, with several large semiconductor companies expressing concern about reduced competition and potential price increases
3. Remedies negotiation: Rather than seeking to block the transaction, the FTC negotiated a consent decree requiring divestitures of specific overlapping product lines

To obtain FTC clearance, Synopsys agreed to divest:

• Ansys's PowerArtist power analysis tool (to a buyer approved by the FTC)
• Certain other overlapping simulation products

The divestitures were designed to preserve competition in the specific markets where the FTC identified concerns, while allowing the broader combination to proceed.

The European Commission conducted a parallel Phase II investigation, ultimately approving the transaction subject to similar divestiture conditions. The EC's review focused on:

• Competition in EDA software markets in Europe
• The potential for the combined company to bundle products in ways that disadvantaged competitors
• Interoperability concerns

The transaction also required regulatory approval in China, South Korea, and several other jurisdictions. China's State Administration for Market Regulation (SAMR) — which has become an increasingly significant factor in global M&A — approved the transaction after an extended review.

The Hart-Scott-Rodino Antitrust Improvements Act of 1976 (HSR Act) requires parties to large transactions to notify the FTC and the Department of Justice (DOJ) before closing and to observe a waiting period during which the agencies can review the transaction.

2025 HSR thresholds (adjusted annually):

• Size of transaction: $119.5 million (transactions above this threshold may require filing)
• Size of person: At least one party must have assets or annual net sales of $23.9 million or more, and at least one party must have assets or annual net sales of $239 million or more

For the Synopsys / Ansys transaction, HSR filing was clearly required given the $35 billion deal size.

1. Filing: Both parties file HSR notification forms with the FTC and DOJ
2. Initial waiting period: 30 days (15 days for cash tender offers)
3. Second request: If the agencies need more information, they issue a "Second Request" — a detailed document and information request that can take months to respond to
4. Extended waiting period: After substantial compliance with a Second Request, a new 30-day waiting period begins
5. Clearance or challenge: The agency either clears the transaction, negotiates a consent decree, or seeks to block the transaction in federal court

The Synopsys / Ansys transaction received a Second Request, extending the review timeline significantly.

Large technology transactions require simultaneous regulatory filings in multiple jurisdictions. The timing and sequencing of these filings — and the coordination of remedy negotiations across jurisdictions — requires careful planning. A remedy accepted by the FTC may not satisfy the European Commission, and vice versa.

In technology sector mergers, customer testimony to regulators can be decisive. Companies planning large acquisitions should engage proactively with key customers to understand their concerns and, where possible, address them before regulatory review begins.

Rather than blocking transactions outright, antitrust regulators increasingly prefer structural remedies — divestitures of specific overlapping businesses or product lines — that preserve competition in affected markets while allowing the broader combination to proceed. Understanding which product lines are likely to attract regulatory concern — and planning for potential divestitures — is an essential part of pre-deal planning.

The FTC's focus on innovation competition in the Synopsys / Ansys review reflects a broader trend in technology sector antitrust enforcement. Acquirers of technology companies should be prepared to address not just current market shares but the potential impact of the transaction on future innovation and competition.

For large global technology transactions, Chinese regulatory approval has become a critical path item that can delay or derail transactions. SAMR's review process is less transparent than U.S. or European review, and the political dimensions of U.S.-China technology competition add complexity. Early engagement with Chinese counsel and realistic timeline planning are essential.

Turkish companies and investors pursuing acquisitions of U.S. technology companies should be aware of:

HSR filing requirements: Any acquisition of a U.S. technology company above the HSR thresholds requires pre-merger notification. The thresholds are adjusted annually — confirm current thresholds with counsel before signing.

FTC scrutiny of technology M&A: The FTC under both Republican and Democratic administrations has maintained an aggressive posture toward technology sector consolidation. Turkish acquirers should conduct thorough antitrust analysis before signing.

Multi-jurisdictional complexity: If the target has significant operations in Europe, China, or other major jurisdictions, plan for multi-jurisdictional regulatory review. Build sufficient time and contingency into deal timelines.

CFIUS intersection: Technology acquisitions may also require CFIUS review if the target has national security implications. The intersection of antitrust and CFIUS review requires careful coordination.

The Synopsys / Ansys merger demonstrates that even transactions between non-competing companies in adjacent technology markets can attract significant antitrust scrutiny. The transaction's successful navigation of multi-jurisdictional review — through proactive engagement with regulators and willingness to divest overlapping product lines — offers a model for managing regulatory risk in large technology sector M&A.

ULF New York advises Turkish clients on U.S. antitrust compliance, HSR filing requirements, and multi-jurisdictional M&A regulatory strategy. Contact us to discuss the regulatory dimensions of your technology sector transactions.

This article is for informational purposes only and does not constitute legal advice. Antitrust regulations and enforcement priorities continue to evolve; consult qualified legal counsel for current guidance.