ON Semiconductor Corporation (NASDAQ: ON) and Synaptics Incorporated (NASDAQ: SYNA) announced on October 1, 2026, that they have entered into an Amended and Restated Agreement and Plan of Merger, restructuring their pending transaction into an all-cash acquisition valued at approximately $5.7 billion. Under the revised terms, onsemi will acquire all outstanding shares of Synaptics for $123 per share in cash, replacing the previous $7 billion stock-and-cash structure announced on June 25, 2026. The move follows an unsolicited competing bid from an undisclosed third party and delivers immediate cash certainty to Synaptics shareholders while lowering onsemi’s overall purchase price.
The restructuring represents a significant pivot in corporate M&A strategy. By moving from a stock-and-cash merger intended as a tax-free reorganization under Section 368 of the Internal Revenue Code to an all-cash transaction, onsemi eliminates equity dilution for its existing shareholders and terminates the need for a registered share exchange under Form S-4. To fund the transaction, onsemi secured up to $2,450,000,000 in fully committed debt financing from Morgan Stanley Senior Funding, Inc., with the remainder funded through existing cash reserves.
Key Takeaways for Capital Markets
- All-Cash Consideration: The Amended Merger Agreement revises the merger consideration to $123 per share in cash, without interest, providing immediate valuation certainty for Synaptics shareholders.
- Lower Aggregate Cost: Under the revised agreement, onsemi will acquire Synaptics for $123 per share in cash for an aggregate value of approximately $5.7 billion as compared to approximately $7 billion for the prior agreement.
- Committed Debt Facility: Morgan Stanley has agreed to provide, subject to satisfaction of customary closing conditions, up to $2,450,000,000 of senior secured term loan for the purpose of funding a portion of the Merger Consideration.
- Streamlined Closing Conditions: The amended agreement eliminates key conditions, including Form S-4 registration statement effectiveness, Nasdaq listing approval of onsemi shares, and closing tax opinions.
- Accretion Profile: The transaction is expected to be immediately accretive to onsemi’s non-GAAP earnings per share upon closing, with $200 million in annual run-rate synergies.
Anatomy of the Restructuring: From S-4 Reorganization to All-Cash Deal
When onsemi initially announced its takeover bid on June 25, 2026, the transaction was structured as a hybrid stock-and-cash deal valued at roughly $7 billion. That structure required extensive regulatory preparation, including the filing of a Form S-4 registration statement on August 21, 2026, with the Securities and Exchange Commission, and subjected the transaction to share-price volatility in onsemi’s equity.
Under the Amended and Restated Agreement and Plan of Merger entered on October 1, 2026, the transaction shifts entirely away from equity issuance. Sonic Acquisition Corp., a wholly owned subsidiary of onsemi, will merge into Synaptics, with Synaptics surviving as a wholly owned operating subsidiary of onsemi. In light of the revised transaction, onsemi announced it intends to formally withdraw its Form S-4 registration statement, eliminating the regulatory review overhead associated with registering new public equity.
| Transaction Term | Original Agreement (June 25, 2026) | Amended Agreement (October 1, 2026) |
|---|---|---|
| Merger Consideration | Hybrid Cash & Stock Consideration | $123.00 per share in cash, without interest |
| Aggregate Transaction Value | Approximately $7.0 billion | Approximately $5.7 billion |
| Tax Classification | Intended Section 368 Reorganization | Taxable all-cash acquisition; Section 368 eliminated |
| Debt Financing Facility | Initial acquisition loan commitments | Up to $2.45B senior secured term loan (Morgan Stanley) |
| Board Governance | Synaptics designee appointed to onsemi Board | Requirement removed; no Synaptics board appointee |
| Regulatory S-4 Filing | Form S-4 registration statement effective | Registration statement requirement withdrawn |
The Competing Bid: How “Party A” Catalyzed the Cash Shift
The catalyst for the renegotiation was an unsolicited competing offer. According to the regulatory disclosure, the Amended Merger Agreement was entered into following Synaptics’ receipt of an unsolicited Acquisition Proposal from a third party, referred to as "Party A" in onsemi’s Registration Statement on Form S-4 filed on August 21, 2026.
When target boards receive an unsolicited proposal during a pending transaction, fiduciary obligations require a thorough evaluation. In response, onsemi and Synaptics restructured the deal economics. While the total nominal valuation decreased from $7 billion to $5.7 billion, the transition to all-cash provides Synaptics stockholders with absolute price certainty at $123 per share, insulating them from semiconductor equity volatility. The Synaptics Board of Directors unanimously determined that the amended cash transaction continues to serve the best interests of the company and its stockholders.
Debt Financing Structure and Syndication Details
To fund the cash consideration, onsemi entered into a binding commitment letter dated October 1, 2026, with Morgan Stanley Senior Funding, Inc. Under the terms of the agreement, Morgan Stanley has agreed to provide, subject to satisfaction of customary closing conditions, up to $2,450,000,000 of senior secured term loan for the purpose of funding a portion of the Merger Consideration, as well as paying transaction-related fees, costs, and expenses.
The capital structure provides two crucial features for deal certainty:
- No Financing Condition: The receipt of debt financing by onsemi is explicitly not a closing condition. If debt syndication markets face macro disruption, onsemi remains legally obligated to consummate the acquisition provided all other closing conditions are satisfied.
- Target Cooperation: Synaptics is required under the merger agreement to use reasonable best efforts to assist onsemi with customary cooperation in syndicating and executing the credit facilities.
Synergies, Accretion Profile, and Strategic Direction
From an earnings perspective, the shift to an all-cash structure alters the transaction’s financial impact. onsemi management confirmed that the revised agreement will be immediately accretive to non-GAAP earnings per share upon closing, driven by the lower overall purchase consideration and the elimination of new share dilution.
Strategically, the acquisition targets high-growth segments in AI data centers, IoT connectivity, and automotive sensing. Synaptics brings human-machine interface (HMI), wireless connectivity, and sensing products that generate high-margin cash flow. In addition to the previously identified $200 million in annual run-rate cost synergies, onsemi highlighted incremental upside from revenue synergies and the insourcing of Synaptics wafer fabrication into onsemi’s existing manufacturing network after the first 18 months post-closing.
Closing Conditions and What to Watch Next
Consistent with the revised cash structure, the Amended Merger Agreement streamlines the path to closing by eliminating several regulatory and market conditions. Parties are no longer conditioned on the effectiveness of an SEC Form S-4 registration statement, the approval for listing of new onsemi shares on Nasdaq, or the receipt of tax opinions verifying Section 368 tax-free status. Furthermore, because Synaptics shareholders will not receive onsemi stock, the condition requiring the absence of a continuing material adverse effect on onsemi was eliminated.
Market participants should track several upcoming milestones:
- Proxy Filing: Synaptics is required to file a preliminary proxy statement with the SEC within 10 days of October 1, 2026.
- Stockholder Vote: A special meeting of Synaptics stockholders will be scheduled within 30 days after SEC clearance of the proxy statement.
- Antitrust Clearances: The transaction remains subject to customary regulatory approvals, including Hart-Scott-Rodino (HSR) antitrust clearance and applicable foreign investment approvals.
- Expected Closing: Both companies continue to target completion by mid-2027.
For more institutional analysis on capital structure transitions and deal mechanics, review the ECMSource guide to capital markets.
Sources & Further Reading
- SEC Form 8-K: ON Semiconductor Corp. Entry into Material Definitive Agreement (Amended Merger Agreement), October 1, 2026.
- SEC Form 8-K Exhibit 99.1: onsemi and Synaptics Announce Revised Merger Agreement, October 1, 2026.
- ECMSource Capital Markets & M&A Overview.
Disclosure: This article is for informational purposes only and is not investment advice.