Archimedes Tech SPAC Partners II Co. (Nasdaq: ATII) announced that its registration statement on Form S-4 regarding the proposed business combination with Forge Nano, Inc. was declared effective by the U.S. Securities and Exchange Commission on September 22, 2026. This approval marks a critical regulatory milestone for the transaction.

Meeting schedule and voting eligibility

The company has scheduled an Extraordinary General Meeting (EGM) for October 16, 2026, at 10:00 am Eastern Time. Shareholders of record as of September 1, 2026, are eligible to attend and vote on the business combination. Access to the meeting will be provided via proxy documents filed with the SEC. The Registration Statement provides important information about Archimedes II, Forge Nano, the combined company, and the business combination.

Transaction structure and listing details

If consummated, the combined company, expected to operate as Forge Nano Holdings, Inc., will trade on Nasdaq under the symbol "NANO". The closing remains subject to shareholder approvals from both Archimedes II and Forge Nano, along with other customary closing conditions. The combined entity is referred to as "Pubco" in the filings.

Background on entities

Archimedes II is a Cayman Islands exempted company led by Chairman Eric R. Ball and CEO Long Long. It completed a $230 million IPO in February 2025. The team previously closed a merger with SoundHound AI, Inc. in April 2022. Forge Nano is a U.S.-based company specializing in Atomic Layer Deposition technology for AI-era chip manufacturing and defense battery applications. The new data describes Forge Nano as a technology company pioneering domestic battery and semiconductor innovations.

Archimedes Tech SPAC Partners II Co. (NASDAQ: ATII) filed a third amendment to its registration statement on Form S-4 with the U.S. Securities and Exchange Commission on September 2, 2026. The filing advances the proposed business combination with Forge Nano, Inc., a U.S.-based semiconductor equipment company.

The registration statement includes a preliminary proxy statement and prospectus but has not yet been declared effective by the SEC. It was filed by ATII Holdings Inc., a wholly-owned subsidiary of Archimedes Tech SPAC Partners II Co., and Forge Nano, Inc.

Transaction Details

Archimedes Tech SPAC Partners II Co. completed its initial public offering in February 2025, raising $230 million. The company’s units, ordinary shares, and warrants trade on the NASDAQ under the ticker symbols ATIIU, ATII, and ATIIW, respectively.

Forge Nano specializes in Atomic Layer Deposition technology for AI-era chip manufacturing and defense battery applications. Its platform technology, Atomic Armor, provides nano-scale coating systems for critical systems.

Regulatory Context

Investors are urged to review the registration statement and related documents filed with the SEC before making any voting decisions regarding the proposed business combination. These documents contain important information about the transaction and the interests of participants in the solicitation of proxies.

The filing references risks related to shareholder approval, redemption requests from public shareholders, and Forge Nano’s ability to realize anticipated benefits post-merger. Forward-looking statements in the communication are subject to numerous risks and uncertainties.