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Archimedes Tech SPAC Partners II Co.

ATII
Exchange
Nasdaq
Industry
Blank Checks
SEC CIK
0002028516

No open-market purchases or sales by Archimedes Tech SPAC Partners II Co. insiders were filed in the last 90 days; 51 institutions reported holding it in 13F filings for Q2 2026, worth $190.7M in total; no superinvestor holds it.

Other share classesATIIUATIIW

Open-market trades, last 90 days

Open-market purchases (P) and sales (S) by Archimedes Tech SPAC Partners II 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 II Co., current and former, most recent filer first. Last reported holding is the position after the last non-derivative trade in their latest filing.

Insider roster for Archimedes Tech SPAC Partners II Co.
NameTitleLast reported holdingLast filingFilings, past year
Long LongChief Executive Officer6,280,000IndirectFeb 12, 20250
Archimedes Tech SPAC Sponsors II LLC10% Owner6,280,000Feb 12, 20250

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.

Insider trades
Filed (ET)Trade dateFiling delayInsiderTransactionSharesAvg priceValueHolding changeFlags
Feb 12, 2025 (view filing)Feb 12Same dayArchimedes Tech SPAC Sponsors II LLC10% OwnerPPurchase+530.0K––+9.2%6.28M afterDuplicate filing
Feb 12, 2025 (view filing)Feb 12Same dayArchimedes Tech SPAC Sponsors II LLC10% OwnerPPurchase+265.0K–––265.0K afterDerivativeDuplicate filing
Feb 12, 2025 (view filing)Feb 12Same dayLong LongChief Executive OfficerPPurchase+530.0K––+9.2%6.28M after
Feb 12, 2025 (view filing)Feb 12Same dayLong LongChief Executive OfficerPPurchase+265.0K–––265.0K afterDerivative