What SEC filings does Archimedes Tech SPAC Partners II Co. submit to the SEC?

Archimedes Tech SPAC Partners II Co. (ATII) submits several types of SEC filings including Form 4 (insider transactions), Form 144 (proposed insider sales), 8-K reports (material events such as earnings releases, acquisitions, leadership changes), and periodic reports — the 10-Q (quarterly) and 10-K (annual). All filings are publicly available through SEC EDGAR.

What does a Form 4 filing tell me about ATII?

A Form 4 for ATII discloses a transaction by a company insider — typically a director, officer, or 10%+ shareholder. It shows the source-reported date, number of shares, price, and updated ownership. These facts do not establish motive or predict future returns.

How do I interpret an 8-K filing from Archimedes Tech SPAC Partners II Co.?

An 8-K signals a material event requiring prompt disclosure. Common triggers include earnings pre-announcements, acquisitions, leadership appointments or departures, credit changes, or regulatory actions. Read the item codes inside the filing to understand exactly what was disclosed before drawing conclusions.

What is the difference between a 10-K and 10-Q for ATII?

The 10-K is Archimedes Tech SPAC Partners II Co.'s annual report with fully audited financial statements, comprehensive MD&A, and complete risk factor disclosures — filed 60–90 days after fiscal year-end. The 10-Q is a lighter quarterly report with unaudited financials filed for the first three quarters. Together they provide a continuous financial picture of the company.

Where can I see all ATII SEC filings directly on EDGAR?

You can view all historical Archimedes Tech SPAC Partners II Co. filings on the SEC EDGAR company page for ATII. Each filing card on this page links directly to the original SEC document.

How often does Archimedes Tech SPAC Partners II Co. file with the SEC?

Archimedes Tech SPAC Partners II Co. files one 10-K per year and up to three 10-Qs per year. Form 4 insider transactions must be reported within two business days of each trade, so the frequency depends on how often insiders are buying or selling ATII shares. 8-K filings occur whenever a material event happens — which can be several times per quarter for an active company.

ATII SEC Filing News — Archimedes Tech SPAC Partners II Co.

Latest SEC filings for Archimedes Tech SPAC Partners II Co. (ATII) explained in plain English. Covers insider buying and selling (Form 4), proposed insider sales (Form 144), material company events (8-K), and quarterly & annual reports (10-Q / 10-K). StrongBuyAnalytics provides navigation and brief excerpts or summaries; original filings remain at the SEC/source links and were authored by their filers, not StrongBuyAnalytics. Filing dates shown are source dates. Coverage and detection can be delayed or incomplete because of SEC availability, amendments, parsing, caching, or outages. Latest source filing date shown: 2026-08-13.

Archimedes Tech SPAC Partners II Co. does not have significant operations. It intends to effect a merger, share exchange, asset acquisition, share purchase, recapitalization, reorganization, or other similar business combination with one or more businesses in the technology industry. Archimedes Tech SPAC Partners II Co. was incorporated in 2024 and is based in Claymont, Delaware.

Sector: Financial Services Industry: Shell Companies Market Cap: $262.0M CIK: 2028516

Total Filings

Bullish Classifications

Bearish Classifications

Insider Transactions

Material Events (8-K)

Periodic Reports

Rule-based classifications for ATII currently lean bullish. Of the 17 displayed SEC filing records, 2 carry bullish classifications versus 0 bearish classifications. These labels summarize filing attributes; they are not recommendations, probabilities, or evidence of future price direction. There were 2 insider transactions (Form 4) in this period.

ATII Filing Activity Snapshot 2025-02-12 — 2026-08-13

Insider Transactions (Form 4)

2 buys vs 0 sells

Net insider buying in this period — more purchases than sales reported.

Insider Transactions 2 · Forms 3, 4 and 5

A Form 4 is filed within two business days of a company insider — an officer, a director, or a holder of more than ten percent of the stock — changing their position in the shares. All 2 filings in this group are Form 4s for Archimedes Tech SPAC Partners II Co.

The difficulty with reading these filings as a group is that a single form type covers transactions that mean entirely different things. An executive spending their own money to buy stock and an executive having shares withheld to pay tax on a vesting grant both appear as a Form 4. Every filing below is therefore tagged with the nature of the underlying transaction, taken from the transaction code reported on the form itself.

Across the 2 insider filings shown, the breakdown is 2 open-market purchase. 2 of them involved a discretionary open-market trade; the rest are compensation and administrative mechanics.

What each transaction type means

Open-market purchase ×2: The insider bought shares on the open market with their own money. This is the only Form 4 category that requires a discretionary cash outlay at the prevailing price.

Form 4 Open-market purchase Insider Buying 2025-02-12

ATII insider Archimedes Tech SPAC Sponsors II LLC (10% Owner) bought 530,000 shares

Archimedes Tech SPAC Sponsors II LLC, listed as 10% Owner at Archimedes Tech SPAC Partners II Co., reported an open-market purchase of 530,000 ATII shares in a Form 4 filing. Insider buying is often treated as a bullish signal because company insiders are committing their own capital.

The insider bought shares on the open market with their own money. This is the only Form 4 category that requires a discretionary cash outlay at the prevailing price.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`P`	Open-market purchase	530,000	—	—
`P`	Open-market purchase derivative · Warrants to purchase ordinary shares	265,000	—	—

Filing: Form 4 (Insider Transaction) Insider: Archimedes Tech SPAC Sponsors II LLC (10% Owner) Shares: 530,000

View on SEC EDGAR → Open Filing Document →

Form 4 Open-market purchase Insider Buying 2025-02-12

ATII insider Long Long (Director, Chief Executive Officer, 10% Owner) bought 530,000 shares

Long Long, listed as Director, Chief Executive Officer, 10% Owner at Archimedes Tech SPAC Partners II Co., reported an open-market purchase of 530,000 ATII shares in a Form 4 filing. Insider buying is often treated as a bullish signal because company insiders are committing their own capital.

The insider bought shares on the open market with their own money. This is the only Form 4 category that requires a discretionary cash outlay at the prevailing price.

Transactions reported on this filing
Code	Nature	Shares	Price	Value
`P`	Open-market purchase	530,000	—	—
`P`	Open-market purchase derivative · Warrants to purchase ordinary shares	265,000	—	—

Filing: Form 4 (Insider Transaction) Insider: Long Long (Director, Chief Executive Officer, 10% Owner) Shares: 530,000

View on SEC EDGAR → Open Filing Document →

Material Events 8 · Form 8-K

An 8-K reports a material event in the window between scheduled reports. There are 8 in this period for Archimedes Tech SPAC Partners II Co. Each 8-K names the item number it is filed under, and that number is the fastest way to tell a routine disclosure from a consequential one.

Item 2.02 is an earnings release, Item 5.02 is a change of directors or officers, and Item 1.01 or 2.01 covers a material agreement or a completed acquisition. Item 7.01 and Item 8.01 are the general-purpose disclosure items and carry no fixed meaning on their own.

Form 8-K Material Company Update 2026-07-14