Archimedes II files S-4 amendment for proposed Forge Nano merger
Archimedes Tech SPAC Partners II Co. filed an amendment to its Form S-4 registration statement on June 22, 2026, to facilitate its proposed merger with Forge Nano. The filing includes a preliminary proxy statement and remains ineffective. The transaction involves ATII's wholly-owned subsidiary, Pubco, and targets Forge Nano, a specialist in atomic-scale coating systems for semiconductor and defense applications.
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Archimedes Tech SPAC Partners II Co. (ATII) filed an amendment to its registration statement on Form S-4 with the U.S. Securities and Exchange Commission (SEC) on June 22, 2026, regarding its proposed business combination with Forge Nano. The filing includes a preliminary proxy statement and has not yet been declared effective. This step advances the merger between the special purpose acquisition company and the semiconductor equipment and advanced materials company.
The Registration Statement was filed by ATII Holdings Inc., a wholly-owned subsidiary of ATII referred to as Pubco, and Forge Nano. The document is available on the SEC's website. The proposed business combination targets Forge Nano, a U.S.-based company pioneering Atomic Layer Deposition (ALD) technology for AI-era chip manufacturing and defense battery applications through its Atomic Armor™ platform.
Archimedes II completed its $230 million initial public offering in February 2025. The company is led by Chairman Eric R. Ball and CEO Long Long. Its units, ordinary shares, and warrants trade on the NASDAQ under the ticker symbols "ATIIU," "ATII" and "ATIIW," respectively. The team's prior SPAC, Archimedes Tech SPAC Partners Co., successfully closed its merger with SoundHound AI, Inc. in April 2022.
Key Details of the Filing
| Aspect | Detail |
|---|---|
| Filing Date | June 22, 2026 |
| Form | S-4 Amendment |
| File Number | 333-295563 |
| Status | Not yet declared effective |
| Filing Entities | ATII Holdings Inc., Forge Nano |
Investors and security holders are urged to read the Registration Statement and other relevant documents filed with the SEC before making any voting decisions. The documents will be mailed to ATII's shareholders in connection with the extraordinary general meeting to approve the proposed business combination. Participants in the solicitation include ATII, Pubco, Forge Nano, and their respective directors and executive officers.
What is the anticipated timeline for the SEC to declare the S-4 registration statement effective?
How will Forge Nano's Atomic Armor™ technology specifically address the current bottlenecks in AI-era chip manufacturing?
What are the expected synergies between Archimedes II's management team and Forge Nano's technical operations post-merger?
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