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“Synopsys to Acquire Avant! Corporation” referred to a proposed stock-for-stock merger announced on December 3, 2001—not a transaction still pending today. Synopsys agreed to issue 0.371 of a Synopsys share for each Avant! share, subject to shareholder, regulatory, and other closing conditions. The merger closed on June 6, 2002, making Avant! part of Synopsys.
The deal was strategically important because it combined Synopsys’ front-end chip-design tools with Avant!’s back-end physical-design and verification technology. It was also unusually complex: Avant! was involved in significant litigation with Cadence, and Synopsys later participated in a $265 million settlement.
Transaction at a glance
| Item | Detail |
|---|---|
| Announcement | December 3, 2001 |
| Closing | June 6, 2002 |
| Parties | Synopsys, Inc. (Nasdaq: SNPS) and Avant! Corporation (Nasdaq: AVNT) |
| Structure | Avant! merged with a Synopsys subsidiary and became a wholly owned Synopsys subsidiary |
| Exchange ratio | 0.371 Synopsys share for each Avant! share |
| Shares issued | Approximately 14.5 million Synopsys shares |
| Fair value of common stock issued | Approximately $795.4 million |
| Litigation settlement | $265 million paid to Cadence in November 2002 |
The contemporary announcement coverage said the transaction was expected to close in roughly three to six months. Shareholder meetings were scheduled for June 4, 2002, and the merger closed two days later.
Why Synopsys wanted Avant!
Electronic-design-automation software is used to design, verify, lay out, and prepare semiconductor chips for manufacturing. Synopsys was particularly strong in front-end activities such as logic synthesis and design verification. Avant! supplied important back-end capabilities, including physical layout, advanced place-and-route, physical verification, design-integrity tools, and the MilkyWay database.
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That product fit was the central strategic rationale. Synopsys and Avant! argued that combining the portfolios could give system-on-chip designers a more integrated flow from logic design through physical implementation and signoff. A broader product portfolio could also reduce handoffs between separate tools, strengthen Synopsys’ position with large semiconductor customers, and create opportunities to sell Synopsys products to Avant!’s customer base.
Those were management’s expected benefits, not independently proven performance results. The available transaction and annual-report disclosures do not establish detailed customer outcomes, product-retirement decisions, or definitive post-merger market-share changes.
What the agreement provided
Avant! shareholders were to receive 0.371 Synopsys shares for each Avant! share. Shareholders entitled to fractional shares would receive cash in lieu of those fractions. The consideration was therefore stock-based, not an all-cash purchase.
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The agreement required approval by Avant! shareholders and approval by Synopsys shareholders for the issuance of Synopsys shares. It also included regulatory requirements, including the Hart-Scott-Rodino waiting-period condition described in Avant!’s SEC filing, along with customary closing conditions. The agreement provided for a $45 million termination fee in specified circumstances.
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The merger was described at announcement as being structured as a tax-free merger. That description concerns the transaction structure presented at the time; it should not be read as a statement that every tax consequence for every shareholder or entity was identical.
The Cadence litigation was central to the deal
Avant! was facing criminal and civil proceedings involving allegations concerning Cadence intellectual property and trade secrets. Avant! had previously pleaded no contest in the related criminal matter and was ordered to pay substantial restitution, according to its SEC disclosures. These matters created a major contingent-liability issue for anyone evaluating the acquisition.
As part of the transaction context, Synopsys arranged approximately $500 million of insurance relating to the pending Cadence litigation. The announcement put the premium at approximately $335 million and described a potential refund if ultimate litigation liability and expenses were below approximately $250 million.
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1Scan for outdated or missing drivers - takes under a minute2Repair Windows errors before they cause bigger problems3Fix the driver behind crashes, sound loss and screen glitchesLater filings gave more precise figures: the premium was approximately $335.8 million, of which approximately $240.8 million was contingently refundable. On November 13, 2002, Synopsys, Avant!, Cadence, and related individuals entered into a settlement. Synopsys’ later disclosure described a $265 million payment to Cadence along with reciprocal intellectual-property licenses. The settlement is also documented in a Synopsys SEC filing.
These figures should not be conflated:
- Restitution: an earlier obligation arising from the related criminal matter involving Avant!.
- Insurance: approximately $500 million of coverage purchased by Synopsys, with a premium of approximately $335.8 million and a contingent refund provision.
- Settlement: the later $265 million payment to Cadence in exchange for settlement terms and reciprocal licenses.
Synopsys acquired Avant! while arranging insurance and later participating in the settlement. That is more precise than simply saying Synopsys “assumed” every aspect of Avant!’s litigation.
What did the acquisition cost?
There is no single number that captures every economic and accounting component of the transaction. The exchange ratio describes how shareholders were paid; it does not by itself state the complete cost of the acquisition.
Synopsys issued approximately 14.5 million shares. In later purchase-accounting disclosures, those shares were valued at $54.74 each, based on Synopsys’ average last-sale price during the relevant trading-day period around the December 3 announcement. That produced a fair value of approximately $795.4 million for the common stock issued.
Later filings also reported approximately $119.5 million in acquisition-related costs and approximately $63.0 million for the fair value of replacement Synopsys stock options, net of the relevant adjustment for unvested options. Other disclosures discussed severance, restructuring, and litigation-related expenses.
Accordingly, it would be misleading to describe the entire deal simply as a $795.4 million acquisition. That figure specifically represents the fair value assigned to the Synopsys common stock issued. Purchase consideration, replacement options, transaction costs, integration-related charges, and litigation expenses were separate components of the overall economic and accounting picture. The later figures are detailed in Synopsys’ SEC filing.
How the proposed merger became a completed acquisition
- December 3, 2001: Synopsys and Avant! announced a definitive merger agreement.
- Approval period: The companies sought the required shareholder approvals and satisfied applicable regulatory and customary closing conditions.
- June 4, 2002: Shareholder meetings were scheduled for both companies.
- June 6, 2002: The merger closed, with Avant! merging into a wholly owned Synopsys subsidiary.
The reviewed filings confirm the closing and its principal terms but do not provide a complete narrative of vote totals or every regulatory milestone. The important historical correction is that the December 2001 headline described an agreement to acquire Avant!, while the transaction itself was completed in June 2002.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Why the deal mattered to the EDA market
The acquisition combined two significant EDA portfolios at a time when semiconductor designers valued broader and more interoperable flows. Synopsys gained access to Avant!’s physical-design, place-and-route, physical-verification, and database technologies, expanding beyond its traditional front-end strengths.
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The trade-offs were substantial. Customers could face product overlap, roadmap uncertainty, migration costs, or changes to support arrangements. A larger vendor might reduce choice and raise switching costs. Synopsys shareholders also faced dilution from the issuance of approximately 14.5 million shares, while investors had to account for the litigation exposure and unusually large insurance expense.
These are reasonable strategic risks and potential benefits, but the cited sources do not prove that the acquisition ultimately reduced competition, improved customer results, or produced specific market-share changes.
What happened afterward
The verified post-announcement record establishes that the merger closed, Avant! became part of Synopsys, Synopsys issued approximately 14.5 million shares, and the companies later resolved the Cadence dispute through the November 13, 2002 settlement. It does not, by itself, support a detailed product-by-product history of how every Avant! technology was later managed inside Synopsys.
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For corporate-history purposes, the transaction is best understood as both a strategic EDA consolidation and a liability-heavy acquisition. Its headline stock value, accounting treatment, insurance arrangement, and later settlement each describe different parts of the same complicated episode.
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