Archimedes Tech SPAC Partners III Co.

Overview

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• TickerARCI on Nasdaq¹
• IndustryBlank Checks¹
• HeadquartersClaymont, Delaware¹
• Incorporated inCayman Islands²
• Business address2093 Philadelphia Pike 1968, Claymont, De 19703²
• Filer categoryNon-accelerated filer, Smaller reporting company, Emerging growth company²

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Corporate structure

Archimedes Tech SPAC Partners III Co. sits at the top of its group. 1 entity, 1 country on record. Switch between the flow chart and the network, and select any entity to see its details.

Built from major holders from Schedules 13D and 13G. Each entity in the chart links to its source.

Leadership

Who has led Archimedes Tech SPAC Partners III Co., and when. Pick a name to see everywhere that person has worked.

• Chief executive officerLong Long Jan 23, 2026 to now³
• Chief financial officerKai Ming Chan Jan 23, 2026 to now⁴

Timeline

1. Jul 17, 20268-K Executive or director change⁹
2. May 1, 20268-K Executive or director change¹⁰
3. Mar 10, 20268-K Other events¹¹
4. Jan 30, 20268-K Other events¹²
5. Jan 27, 20268-K Entered a material agreement; Unregistered sale of shares; Bylaws or fiscal year changed¹³
6. Jan 23, 2026New chief executive Long Long becomes CEO³

Filings

28 filings to the SEC since October 2021: 2 quarterly reports, 5 major events, 10 insider forms, 1 large holders, 10 other. The latest 20:

1. Aug 13, 202610-Q QUARTERLY REPORT EDGAR
2. Jul 17, 20263 EDGAR
3. Jul 17, 20268-K CURRENT REPORT EDGAR
4. May 14, 202610-Q QUARTERLY REPORT EDGAR
5. May 13, 2026SCHEDULE 13G EDGAR
6. May 1, 20268-K CURRENT REPORT EDGAR
7. Mar 10, 20268-K CURRENT REPORT EDGAR
8. Jan 30, 20268-K EDGAR
9. Jan 27, 20268-K EDGAR
10. Jan 26, 20264 EDGAR
11. Jan 26, 20264 EDGAR
12. Jan 26, 2026424B4 EDGAR
13. Jan 26, 2026424B4 EDGAR
14. Jan 23, 20263 EDGAR
15. Jan 23, 20263 EDGAR
16. Jan 23, 20263 EDGAR
17. Jan 23, 20263 EDGAR
18. Jan 23, 20263 EDGAR
19. Jan 23, 20263 EDGAR
20. Jan 23, 20263 EDGAR

Every filing from the last five years, summarized. The full record is on SEC EDGAR.

Insider trades

2 open-market trades by officers, directors and large owners since October 2021: 2 buys and 0 sales. Grants, option exercises and gifts are left out.

From Forms 4 filed with the SEC.

Major holders

Investors who own more than 5% of the shares must tell the SEC: a 13D if they may seek to influence the company, a 13G if they hold passively.

• Adage Capital Management, L.P.SCHEDULE 13G, 1 filing May 13, 2026¹⁴

SEC filer profile

How Archimedes Tech SPAC Partners III Co. is registered with the Securities and Exchange Commission, from its EDGAR record and the cover page of its latest annual report.

• Name on EDGARArchimedes Tech SPAC Partners III Co.¹
• CIK0002083910
• Filer statusNon-accelerated filer<br>smaller reporting company<br>emerging growth company¹
• Incorporated inCayman Islands¹
• Fiscal year endsDecember 31¹
• Industry code (SIC)6770 Blank Checks¹
• SEC reviewing officeOffice of Real Estate & Construction, Division of Corporation Finance¹
• Business address2093 Philadelphia Pike 1968, Claymont, DE 19703¹
• Phone619-719-1810¹
• Shares outstanding35,262,000 as of Aug 12, 2026¹⁵
• On EDGAR sinceOct 8, 2025¹
• Filings28 in all: 3 (8), 8-K (5), 10-Q (2), 4 (2), 424B4 (2), S-1/A (2), 8-A12B (1), CERT (1)¹
  All 13 form types

  DRS (1), EFFECT (1), S-1 (1), S-1MEF (1), SCHEDULE 13G (1)

• Latest filingsQuarterly report (10-Q) Aug 13, 2026
  Latest 8-K (8-K) Jul 17, 2026