Companies / Archimedes Tech SPAC Partners II Co.

Archimedes Tech SPAC Partners II Co.

Nasdaq: ATIICIK 2028516CLAYMONT, DEarchimedes.law ↗

Financials

Revenue—

Net income$7.99M

Total debt—

Cash$415.0K

Diluted EPS—

Shares outstanding29.6M

Ownership

29.6M shares outstanding · as of May 14, 2026

Ownership

Insiders	21.22%	6,280,000
10%+ / strategic	53.55%	15,846,420
Institutions	53.20%	15,741,434
Public float	0.00%	0

Reported holdings exceed shares outstanding — public float shown as 0; some positions may overlap or lag.

% of common shares outstanding (exact, from the latest cover-page filing). Institutional stakes are reported quarterly; insider figures reflect current officers & directors.

Insiders 8

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Insider	% of shares	Shares
Archimedes Tech SPAC Sponsors II LLC10% owner	21.22%	6,280,000
Long LongCEOChief Executive Officer · Director · 10% owner	21.22%	6,280,000
Archimedes Tech SPAC Partners II Co.10% owner	19.43%	5,750,000
Ball Eric R.Director	—	—
Cannon Stephen NDirector	—	—
Crawford Jack GriffithDirector	—	—
Pai VishweshDirector	—	—
Sheehan Daniel LChief Financial Officer	—	—

Institutional holders 52

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Holder	Value	% of shares
TENOR CAPITAL MANAGEMENT Co., L.P.	$14.75M	4.62%
Fort Baker Capital Management LP	$14.35M	4.50%
Magnetar Financial LLC	$13.98M	4.38%
D. E. Shaw & Co., Inc.	$12.27M	3.85%
Decagon Asset Management LLP	$10.11M	3.17%
Linden Advisors LP	$9.14M	2.87%
Ghisallo Capital Management LLC	$8.62M	2.70%
Two Sigma Investments, LP	$7.82M	2.45%
Hudson Bay Capital Management LP	$7.55M	2.37%
Shay Capital LLC	$6.72M	2.11%

5%+ ownership events

Large-stake disclosures

Filer	Stance	% of class	Shares	Date
TENOR CAPITAL MANAGEMENT Co., L.P.	Passive13G	4.60%	1,367,830	Jun 30, 2026
Barclays PLC	Passive13G	3.88%	1,148,590	Dec 31, 2025
Sculptor Capital LP	Passive13G	4.39%	1,300,000	Jun 30, 2025

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Activity

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InsidersInstitutions

What the company's own insiders are buying and selling.

Date	Actor	Action	Security	Value	Shares Δ	Position after	Impact
Feb 12, 2025	Archimedes Tech SPAC Sponsors II LLC 10% owner	Buy Open-market buy	Warrants to purchase ordinary shares	—	+265K	265,000 0.90% of shares	low
Feb 12, 2025	Archimedes Tech SPAC Sponsors II LLC 10% owner	Buy Open-market buy	Ordinary shares	—	+530K +9.22%	6,280,000 21.22% of shares	low
Feb 12, 2025	Long Long CEO	Buy Open-market buy	Warrants to purchase ordinary shares	—	+265K	265,000 0.90% of shares	low
Feb 12, 2025	Long Long CEO	Buy Open-market buy	Ordinary shares	—	+530K +9.22%	6,280,000 21.22% of shares	low

Securities

via CUSIP / OpenFIGI

Symbol	Type	Market	CUSIP	FIGI
ATII	ordinary	—	G04537109	—
ATII	unit	—	G04537117	—