Trasteel and Sizzle II submit draft F-4 for business combination
- Trasteel and Sizzle II filed a confidential draft F-4 registration statement with the SEC on September 30, 2026
- The combined entity, Trasteel S.A., is expected to list on Nasdaq under the ticker symbol TSTL
- Trasteel operates in over 60 countries with more than 1,400 employees and serves over 4,000 customers
- The merger is subject to SEC effectiveness and approval by Sizzle II shareholders

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Trasteel Holding S.A. and Sizzle Acquisition Corp. II (NASDAQ: SZZL) have confidentially submitted a draft registration statement on Form F-4 to the U.S. Securities and Exchange Commission (SEC). This submission marks a key milestone in the proposed merger between the global steel trading group and the special purpose acquisition company.
The filing was made on September 30, 2026, by Trasteel S.A., a newly formed Luxembourg holding company designated as the public entity post-merger. The transaction is governed by a Business Combination Agreement dated April 13, 2026. Under the terms, the new holding company will acquire all issued and outstanding shares of Trasteel in exchange for ordinary shares. Simultaneously, a wholly owned subsidiary of the holding company will merge with Sizzle II, resulting in both entities becoming subsidiaries of the new public company.
Transaction structure and listing plans
Upon completion of the deal, the combined entity is expected to list on the Nasdaq Stock Market under the ticker symbol "TSTL". The closure of the transaction remains subject to several conditions, including the SEC declaring the registration statement effective and obtaining approval from Sizzle II shareholders.
| Entity | Role | Jurisdiction | Ticker |
|---|---|---|---|
| Trasteel Holding S.A. | Target Company | Switzerland/Luxembourg | N/A |
| Sizzle Acquisition Corp. II | SPAC | Cayman Islands | NASDAQ: SZZL |
| Trasteel S.A. (Pubco) | Combined Entity | Luxembourg | NASDAQ: TSTL |
Operational profile of Trasteel
Founded in 2009, Trasteel operates as a global steel trading and industrial group headquartered in Lugano, Switzerland, and Luxembourg. The company combines trading operations with industrial transformation activities. Its operational footprint includes presence in more than 60 countries, serving over 4,000 customers worldwide with a workforce of over 1,400 employees.
Regulatory status and next steps
The registration statement has not yet been filed publicly or declared effective by the SEC. It remains under regulatory review. Once declared effective, a definitive proxy statement and prospectus will be mailed to Sizzle II shareholders ahead of the vote on the proposed business combination. Investors are advised to review these documents when available, as they will contain detailed information about the transaction risks and financials.
Sizzle II is led by Chairman and CEO Steve Salis and Vice Chairman Jamie Karson. The SPAC was incorporated as a Cayman Islands exempted company for the purpose of effecting a merger or similar business combination. The parties noted that the transaction involves standard risks associated with SPAC mergers, including shareholder approval requirements and potential redemptions.
How might Trasteel's reliance on global supply chains across 60+ countries impact its valuation amid potential geopolitical trade tensions?
What specific financial metrics or growth projections will likely drive investor sentiment during the upcoming shareholder vote for Sizzle Acquisition Corp. II?
How does the proposed Luxembourg holding structure influence the combined entity's tax efficiency and regulatory compliance compared to its current Swiss operations?


























