Artius II Acquisition ends SEC reports on key shares

Artius II Acquisition Inc. (AACB) has filed a Form 15 to certify the termination of registration under Section 12(g) and the suspension of its duty to file reports under Sections 13 and 15(d) of the Securities Exchange Act of 1934 for certain securities.

Rhea-AI Filing Summary

Artius II Acquisition Inc. (AACB) has filed a Form 15 to certify the termination of registration under Section 12(g) and the suspension of its duty to file reports under Sections 13 and 15(d) of the Securities Exchange Act of 1934 for certain securities.

The filing covers the company’s units (each consisting of one Class A ordinary share, one right to receive one tenth of one Class A ordinary share, and one contingent right), its standalone Class A ordinary shares, and its rights entitling the holder to receive one tenth of one Class A ordinary share. No other classes of securities are listed as continuing to carry Exchange Act reporting obligations.

Key Terms

termination of registration, suspension of duty to file reports, Section 12(g), Section 15(d), +2 more

6 terms

termination of registration regulatory

"CERTIFICATION AND NOTICE OF TERMINATION OF REGISTRATION UNDER SECTION 12(g)"

suspension of duty to file reports regulatory

"OR SUSPENSION OF DUTY TO FILE REPORTS UNDER SECTIONS 13 AND 15(d)"

Section 12(g) regulatory

"TERMINATION OF REGISTRATION UNDER SECTION 12(g) OF THE SECURITIES"

Section 12(g) is a rule that requires companies to register with the government and share their financial details when they have a certain number of shareholders or assets. It matters because it makes these companies more transparent, helping investors make informed decisions and keeping the markets fair.

Section 15(d) regulatory

"DUTY TO FILE REPORTS UNDER SECTIONS 13 AND 15(d) THE SECURITIES"

Section 15(d) is a U.S. securities law rule that can require a company to keep filing regular public financial reports with regulators after it sells stock in certain offerings, even if it otherwise would stop reporting. Think of it like a store that must continue posting its receipts so buyers can check its health; for investors, it preserves ongoing disclosure and helps them track a company’s finances and risks that might affect the stock.

Class A ordinary share financial

"Class A ordinary share, $0.0001 par value"

A Class A ordinary share is a type of common stock a company issues that carries a specific set of rights—most often particular voting power, dividend terms, or transfer rules—distinct from other share classes. For investors it matters because those rights affect control over company decisions, how income is paid out, and how easy shares are to buy or sell; think of it like a tiered ticket that gives different access and influence at the same event.

contingent right financial

"one contingent right Class A ordinary shares, $0.0001 par value"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What did Artius II Acquisition Inc. (AACB) do in this Form 15 filing?

Artius II Acquisition Inc. filed a Form 15 to certify the termination of registration under Section 12(g) and to suspend its duty to file reports under Sections 13 and 15(d) of the Securities Exchange Act of 1934 for certain securities.

Which AACB securities are covered by this Form 15?

The Form 15 covers AACB units (each consisting of one Class A ordinary share, one right to receive one tenth of one Class A ordinary share, and one contingent right), the Class A ordinary shares, and the rights entitling the holder to receive one tenth of one Class A ordinary share.

Does AACB indicate any other classes of securities that remain subject to reporting duties?

No. The Form 15 lists the covered classes and then states “None” for the titles of all other classes of securities for which a duty to file reports under Section 13(a) or 15(d) remains.

Under which sections of the Exchange Act is AACB suspending its reporting duty?

AACB is suspending its duty to file reports under Sections 13 and 15(d) of the Securities Exchange Act of 1934, as stated in the Form 15 certification and notice.

Who signed AACB’s Form 15 and in what capacity?

The Form 15 was signed by Boon Sim in his capacity as Chief Executive Officer of Artius II Acquisition Inc., dated August 31, 2026.

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Available on EDGAR 08/31/2026 - 08:00 AM EDT Accepted by SEC EDGAR 08/31/2026 - 08:00 AM EDT Learn about SEC filing dates

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 15

CERTIFICATION AND NOTICE OF TERMINATION OF REGISTRATION

UNDER SECTION 12(g) OF THE SECURITIES EXCHANGE ACT OF 1934

OR SUSPENSION OF DUTY TO FILE REPORTS UNDER SECTIONS 13 AND 15(d) OF

THE SECURITIES EXCHANGE ACT OF 1934.

1-42521

Commission File Number

ARTIUS II ACQUISITION INC.

(Exact name of registrant as specified in its charter)

3 Columbus Circle, Suite 1609

New York, NY 10019

(212) 309-7668

(Address, including zip code, and telephone number, including area code, of registrant’s principal executive offices)

Units, each consisting of one Class A ordinary share, $0.0001 par value, one right to receive one tenth of one Class A ordinary share, and one contingent right

Class A ordinary shares, $0.0001 par value per share

Rights, each right entitling the holder to receive one tenth of one Class A ordinary share

(Title of each class of securities covered by this Form)

None

(Titles of all other classes of securities for which a duty to file reports under section 13(a) or 15(d) remains)

Please place an X in the box(es) to designate the appropriate rule provision(s) relied upon to terminate or suspend the duty to file reports:

Rule 12g-4(a)(1)	☒
Rule 12g-4(a)(2)	☐
Rule 12h-3(b)(1)(i)	☒
Rule 12h-3(b)(1)(ii)	☐
Rule 15d-6	☐
Rule 15d-22(b)	☐

Approximate number of holders of record as of the certification or notice date: None

Pursuant to the requirements of the Securities Exchange Act of 1934, Artius II Acquisition Inc. has caused this certification/notice to be signed on its behalf by the undersigned duly authorized person.

Date:	August 31, 2026	By:	/s/ Boon Sim
		Name:	Boon Sim
		Title:	Chief Executive Officer