Archimedes Tech SPAC Sponsors III LLC - SEC Form 4 Insider Trading Activity
Summary
Updated Aug 4, 2026
Archimedes Tech SPAC Sponsors III LLC is a corporate entity tracked by InsiderAlpha. No SEC Form 4 filings recorded in the last 90 days.
Profile
Archimedes Tech SPAC Sponsors III LLC is a corporate entity that reports beneficial ownership of shares in Archimedes Tech SPAC Partners III Co. (ARCI) under U.S. securities law. It has submitted 1 SEC insider filing since 2026, most recently in January 2026.
| Filer type | Company |
|---|---|
| Role | 10% Owner |
| Notability | 20/100 |
Board memberships
- Archimedes Tech SPAC Partners III Co.
Reported roles
- 10% Owner
Trading Pattern
InsiderAlpha's records for Archimedes Tech SPAC Sponsors III LLC go back to 2026: 1 primary Form 4 filing, an average of 1.0 per year. No transaction on record carries a Rule 10b5-1 flag - the filings look discretionary rather than pre-scheduled, which makes their timing more informative as a signal.
Career & Filing History
Every role Archimedes Tech SPAC Sponsors III LLC has reported on a Form 4, reconstructed from the filings themselves - reporting insiders must state their relationship to the issuer (officer title, director seat, or 10% ownership) on every filing.
- 10% Owner at Archimedes Tech SPAC Partners III Co. (ARCI) - 1 filing, 2026
Recent Transactions
| Date | Ticker | Company | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-01-26 | ARCI | Archimedes Tech SPAC Partners III Co. | P - Open-market purchase | 390.0K | - |
Most Active Insiders Right Now
Archimedes Tech SPAC Sponsors III LLC has no recent co-filers at the same companies, so here are the insiders with the largest open-market activity across the market in the last 90 days.
- Magnetar Financial LLC - $8.53B of CRWV open-market activity in the last 90 days
- VisionWave Holdings, Inc. - $7.98B of SVRE open-market activity in the last 90 days
- AI Alpine (Luxembourg) S.a.r.l. - $2.69B of INIO open-market activity in the last 90 days
- SGF FANG Holdings, LP - $2.04B of FANG open-market activity in the last 90 days
- BCP 8 Holdings Mozart Manager L.L.C. - $1.22B of MDLN open-market activity in the last 90 days
- BX Mozart ML-2 Holdco L.P. - $1.22B of MDLN open-market activity in the last 90 days
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
- Audax Private Credit Business, LP
- Milton C. Ault III
- BAIN CAPITAL INVESTORS LLC
- Bain Capital Life Sciences Investors, LLC
- BAKER BROS. ADVISORS LP
- BANK OF AMERICA CORP
- BANKERS LIFE & CASUALTY CO
- John F. Barry
Frequently Asked Questions
What is Archimedes Tech SPAC Sponsors III LLC?
Archimedes Tech SPAC Sponsors III LLC is a corporate entity that reports beneficial ownership of shares in Archimedes Tech SPAC Partners III Co. (ARCI) under U.S. securities law. It has submitted 1 SEC insider filing since 2026, most recently in January 2026.…
Has Archimedes Tech SPAC Sponsors III LLC been buying or selling stock?
Recorded transactions: 2 open-market purchases and 0 open-market sales across all tracked filings.
Where can I see all of Archimedes Tech SPAC Sponsors III LLC's SEC filings?
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
Learn More
Open the live Archimedes Tech SPAC Sponsors III LLC profile on InsiderAlpha for real-time alerts, AI-scored trade ideas, and full transaction history.