Archimedes Tech SPAC Partners III Co. SEC filings ARCIW
Archimedes Tech SPAC Partners III Co. has 28 filings in SEC EDGAR's recent list, going back to Oct 8, 2025. The latest quarterly report (Form 10-Q) was filed on Aug 13, 2026, covering the quarter ended Jun 30, 2026. The most recent current report (Form 8-K) was filed on Jul 17, 2026 (officer or director change). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| 10-Q | Quarterly report | Aug 13, 2026 | Jun 30, 2026 |
| 3 | Initial insider ownership | Jul 17, 2026 | Jul 13, 2026 |
| 8-K |
Current report
Officer or director change
|
Jul 17, 2026 | Jul 13, 2026 |
| 10-Q | Quarterly report | May 14, 2026 | Mar 31, 2026 |
| SCHEDULE 13G | Ownership over 5% (passive) | May 13, 2026 | — |
| 8-K |
Current report
Officer or director change
|
May 1, 2026 | Apr 28, 2026 |
| 8-K |
Current report
Other events
|
Mar 10, 2026 | Mar 10, 2026 |
| 8-K |
Current report
Other events
|
Jan 30, 2026 | Jan 26, 2026 |
| 8-K |
Current report
Material agreement, Unregistered share sale, Bylaw or fiscal year change, Other events
|
Jan 27, 2026 | Jan 22, 2026 |
| 4 | Insider transaction | Jan 26, 2026 | Jan 26, 2026 |
| 4 | Insider transaction | Jan 26, 2026 | Jan 26, 2026 |
| 424B4 | Prospectus | Jan 26, 2026 | — |
| 424B4 | Prospectus | Jan 26, 2026 | — |
| 3 | Initial insider ownership | Jan 23, 2026 | Jan 22, 2026 |
| 3 | Initial insider ownership | Jan 23, 2026 | Jan 22, 2026 |
| 3 | Initial insider ownership | Jan 23, 2026 | Jan 22, 2026 |
| 3 | Initial insider ownership | Jan 23, 2026 | Jan 22, 2026 |
| 3 | Initial insider ownership | Jan 23, 2026 | Jan 22, 2026 |
| 3 | Initial insider ownership | Jan 23, 2026 | Jan 22, 2026 |
| 3 | Initial insider ownership | Jan 23, 2026 | Jan 22, 2026 |
| EFFECT | Filing | Jan 22, 2026 | — |
| S-1MEF | Form s-1mef | Jan 22, 2026 | — |
| CERT | Filing | Jan 22, 2026 | — |
| 8-A12B | Form 8-a12b | Jan 22, 2026 | — |
| S-1/A | Amended registration statement | Jan 20, 2026 | — |
| S-1/A | Amended registration statement | Jan 15, 2026 | — |
| S-1 | Registration statement | Dec 23, 2025 | — |
| DRS | Filing | Oct 8, 2025 | — |
Showing 28 filings. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.
New to this? Read What Are SEC Filings? 10-K, 10-Q, 8-K and Other Forms Explained.
Company profile
- Industry
- Blank Checks (SIC 6770)
- Listed as
- ARCI (Nasdaq), ARCIU (Nasdaq), ARCIW (Nasdaq)
- Fiscal year ends
- December 31
- Incorporated in
- Cayman Islands
- Headquarters
- Claymont, DE
- SEC filer status
- Non-accelerated filer, Smaller reporting company, Emerging growth company
- SEC CIK
- 2083910
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.