Archimedes Tech SPAC Partners III Co.
ARCIU- Exchange
- Nasdaq
- Industry
- Blank Checks
- SEC CIK
- 0002083910
No open-market purchases or sales by Archimedes Tech SPAC Partners III Co. insiders were filed in the last 90 days; 15 institutions reported holding it in 13F filings for Q2 2026, worth $47.3M in total; no superinvestor holds it.
Open-market trades, last 90 days
Open-market purchases (P) and sales (S) by Archimedes Tech SPAC Partners III Co. insiders, counted by Form 4 filing. Trades with a flagged price and duplicate filings are left out.
- Open-market buys
- 0 filings
- Open-market sells
- 0 filings
- Insiders trading
- 0
- Net value
- $0
- Purchases minus sales
Insider roster
Directors, officers and 10% owners who have filed a Form 4 for Archimedes Tech SPAC Partners III Co., current and former, most recent filer first. Last reported holding is the position after the last non-derivative trade in their latest filing.
| Name | Title | Last reported holding | Last filing | Filings, past year |
|---|---|---|---|---|
| Long Long | Chief Executive Officer | 390,000Indirect | Jan 26, 2026 | 1 |
| Archimedes Tech SPAC Sponsors III LLC | 10% Owner | 390,000 | Jan 26, 2026 | 1 |
Insider trades
Each row adds up one type of transaction in one Form 4 filing. Only open-market purchases (P) and sales (S) are shown by default; use the filters to see grants, option exercises and other codes.
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Jan 26, 2026 (view filing) | Jan 26 | Same day | Archimedes Tech SPAC Sponsors III LLC10% Owner | PPurchase | +390.0K | – | – | New position390.0K after | Duplicate filing |
| Jan 26, 2026 (view filing) | Jan 26 | Same day | Archimedes Tech SPAC Sponsors III LLC10% Owner | PPurchase | +97.5K | – | – | –97.5K after | DerivativeDuplicate filing |
| Jan 26, 2026 (view filing) | Jan 26 | Same day | Long LongChief Executive Officer | PPurchase | +390.0K | – | – | New position390.0K after | |
| Jan 26, 2026 (view filing) | Jan 26 | Same day | Long LongChief Executive Officer | PPurchase | +97.5K | – | – | –97.5K after | Derivative |