Archimedes Tech SPAC Partners II Unit SEC Filings
NASDAQ: ATIIUFinanceBlank ChecksUSD
At close: Oct 9, 4:00 PM ET · Delayed 15 min
Archimedes Tech SPAC Partners II Unit filing overview
This page lists 30 recent SEC filings by Archimedes Tech SPAC Partners II Unit (ATIIU), including 8 8-K, 5 10-Q, 4 SCHEDULE 13G/A, 4 S-1/A. The latest annual report (10-K) was filed on Mar 4, 2026 for the period ending Dec 31, 2025. The most recent quarterly report (10-Q) was filed on Aug 13, 2026.
The latest current report (8-K), used to disclose material events such as earnings releases and executive changes, was filed on Jul 14, 2026. Form 10-K is the audited annual report, 10-Q the quarterly report, 8-K covers material events, and Form 4 reports insider transactions. All documents link directly to SEC EDGAR.
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ATIIU SEC filings
| Filed | Form | Description | Document |
|---|---|---|---|
| Aug 14, 2026 | SCHEDULE 13G/A | Beneficial ownership report (passive) (amendment) | View on EDGAR |
| Aug 13, 2026 | 10-Q | Quarterly report | View on EDGAR |
| Jul 14, 2026 | 8-K | Unregistered Sales of Equity Securities; Other Events | View on EDGAR |
| Jun 25, 2026 | 8-K | Other Events | View on EDGAR |
| May 14, 2026 | 10-Q | Quarterly report | View on EDGAR |
| Apr 30, 2026 | 8-K | Regulation FD Disclosure | View on EDGAR |
| Apr 22, 2026 | 8-K | Regulation FD Disclosure | View on EDGAR |
| Apr 20, 2026 | 8-K | Entry into a Material Definitive Agreement; Unregistered Sales of Equity Securities; Regulation FD Disclosure | View on EDGAR |
| Mar 4, 2026 | 10-K | Annual report | View on EDGAR |
| Feb 11, 2026 | SCHEDULE 13G/A | Beneficial ownership report (passive) (amendment) | View on EDGAR |
| Nov 7, 2025 | SCHEDULE 13G/A | Beneficial ownership report (passive) (amendment) | View on EDGAR |
| Nov 7, 2025 | 10-Q | Quarterly report | View on EDGAR |
| Aug 14, 2025 | SCHEDULE 13G/A | Beneficial ownership report (passive) (amendment) | View on EDGAR |
| Aug 12, 2025 | SCHEDULE 13G | Beneficial ownership report (passive) | View on EDGAR |
| Aug 8, 2025 | 10-Q | Quarterly report | View on EDGAR |
| May 14, 2025 | 10-Q | Quarterly report | View on EDGAR |
| Mar 31, 2025 | 8-K | Other Events | View on EDGAR |
| Mar 31, 2025 | 10-K | Annual report | View on EDGAR |
| Feb 19, 2025 | SCHEDULE 13G | Beneficial ownership report (passive) | View on EDGAR |
| Feb 19, 2025 | 8-K | Other Events | View on EDGAR |
| Feb 19, 2025 | SCHEDULE 13G | Beneficial ownership report (passive) | View on EDGAR |
| Feb 14, 2025 | 8-K | Entry into a Material Definitive Agreement; Unregistered Sales of Equity Securities; Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year; Other Events | View on EDGAR |
| Feb 12, 2025 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Feb 12, 2025 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Feb 11, 2025 | 424B4 | Prospectus | View on EDGAR |
| Feb 5, 2025 | S-1/A | Registration statement (amendment) | View on EDGAR |
| Feb 3, 2025 | S-1/A | Registration statement (amendment) | View on EDGAR |
| Jan 21, 2025 | S-1/A | Registration statement (amendment) | View on EDGAR |
| Nov 27, 2024 | S-1/A | Registration statement (amendment) | View on EDGAR |
| Oct 30, 2024 | S-1 | Registration statement | View on EDGAR |