Company: ATIIU
Filing Date: 2025-02-10
Form Type: 8-A12B
Source: 0001437749-25-003316
Chunk: 0

Company: Archimedes Tech SPAC Partners II Co.
Filing Date: 2025-02-10
Form: 8-A12B
Chunk 0
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<div align='center'>UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-A

FOR REGISTRATION OF CERTAIN CLASSES OF SECURITIES

PURSUANT TO SECTION 12(b) OR 12(g) OF THE

SECURITIES EXCHANGE ACT OF 1934

Archimedes Tech SPAC Partners II Co.

(Exact name of registrant as specified in its charter)</div>

| Cayman Islands                                                 |     | N/A                                 |
| (State or other jurisdiction of incorporation or organization) |     | -I.R.S. Employer Identification No. |

<div align='center'>2093 Philadelphia Pike #1968

Claymont, DE 19703

(Address of principal executive offices, including zip code)</div>

Securities to be registered pursuant to Section 12(b) of the Act:

| Title of each class to be registered                                                |     | Name of each exchange on which each class is to be registered |
| Units, each consisting of one Ordinary Share and one-half of one redeemable Warrant |     | The Nasdaq Stock Market LLC                                   |
| Ordinary Shares, par value of $0.0001 per share                                     |     | The Nasdaq Stock Market LLC                                   |
| Warrants                                                                            |     | The Nasdaq Stock Market LLC                                   |

If this form relates to the registration of a class of securities pursuant to Section 12(b) of the Exchange Act and is effective pursuant to General Instruction A.(c) or (e), check the following box. ☒

If this form relates to the registration of a class of securities pursuant to Section 12(g) of the Exchange Act and is effective pursuant to General Instruction A.(d) or (e), check the following box. ☐

If this form relates to the registration of a class of securities concurrently with a Regulation A offering, check the following box. ☐

Securities Act registration statement file number to which this form relates:

Securities to be registered pursuant to Section 12(g) of the Act: .

| Item 1. | Description of Registrant’s Securities to be Registered. |

A description of the units, ordinary shares and warrants to be registered hereunder is contained in the section entitled “Description of Securities” in the Prospectus included in Archimedes Tech SPAC Partners II Co.’s (the “Registrant”) Registration Statement on Form S-1 (File No. 333-282885) initially filed