Recent 8-K filings for ATII

• July 14, 2026, 4:41 PM ET M&A materiality 0.75 positive item 3.02item 8.01item 9.01

  Forge Nano secures additional $23M PIPE at $10/share; total PIPE $123M with Samsung SDI investment

  Additional $23M PIPE at $10.00/share brings total PIPE commitments to $123M for Forge Nano's SPAC merger with ATII.

• June 25, 2026, 5:10 PM ET other material materiality 0.75 positive item 8.01item 9.01

  Forge Nano partners with Samsung SDI to build US battery Gigafactory; production expected 2028

  Forge Nano to build 3 GWh/year NC Gigafactory with Samsung SDI support; manufacturing starts 2028.

• April 22, 2026, 7:59 PM ET M&A materiality 0.80 positive item 7.01item 9.01

  Archimedes Tech SPAC Partners II to merge with Forge Nano at $1.2B pre-money valuation

  Forge Nano valued at $1.2B pre-money; combined pro forma equity value ~$1.595B.

• April 20, 2026, 7:59 PM ET M&A materiality 0.90 neutral item 1.01item 3.02item 7.01item 9.01 ◈ Equity Issuances◈ Material Agreements

  Archimedes Tech SPAC to merge with Forge Nano at $1.2B enterprise value; expected close Q3 2026

  Merger values Forge Nano at $1.2B; SPAC shareholders receive $10 per share reference price for Pubco Common Stock.

• February 19, 2025, 6:59 PM ET other materiality 0.60 neutral item 8.01item 9.01

  Archimedes Tech SPAC Partners II closes $230M IPO, deposits $231.15M in trust

  Sold 23M units at $10/unit including full over-allotment; gross proceeds $230M.

• February 14, 2025, 6:59 PM ET other material materiality 0.65 neutral item 1.01item 3.02item 5.03item 8.01item 9.01 ◈ Governance Changes

  Archimedes Tech SPAC Partners II closes $230M IPO, including full over-allotment

  Offered 23M units at $10.00 each; gross proceeds $230M from IPO plus $8.4M private placement.

Materiality & sentiment trend

Max materiality 0.90 · Median 0.70 · Most common event m_and_a

3 positive 0 negative 5 neutral

source · ATII on sec.gov