Initial Registration Statement for Employee Benefit Plan (Form S-8)

As filed with the Securities and Exchange Commission on June 23, 2025

Registration No. 333-

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form S-8

REGISTRATION STATEMENT

UNDER

THE SECURITIES ACT OF 1933

Amrize Ltd

(Exact name of registrant as specified in its charter)

Grafenauweg 8

6300 Zug, Switzerland 6300

(Address of Principal Executive Offices, including Zip Code)

Amrize Ltd 2025 Omnibus Incentive Plan

Amrize Ltd Employee Stock Purchase Plan

(Full title of the plan)

Denise Singleton

Chief Legal Officer and Corporate Secretary

Amrize Ltd

8700 W. Bryn Mawr Ave.

Chicago, IL 60631

+41 41 562 34 90

(Name, address, and telephone number, including area code, of agent for service)

Copies to:

Brandon Van Dyke

Samuel Cammer

Jeremy Winter

Skadden, Arps, Slate, Meagher & Flom LLP

One Manhattan West

New York, NY 10001

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company or emerging growth company. See the definitions of "large accelerated filer," "accelerated filer" "smaller reporting company" and "emerging growth company" in Rule 12b-2 of the Exchange Act.

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 7(a)(2)(B) of the Securities Act. ☐

PART I

INFORMATION REQUIRED IN THE SECTION 10(a) PROSPECTUS

* Information required by Items 1 and 2 of Part I of Form S-8 to be contained in the Section 10(a) prospectus is omitted from this Registration Statement on Form S-8 (this "Registration Statement") in accordance with Rule 428 under the Securities Act of 1933, as amended (the "Securities Act"), and the introductory note to Part I of Form S-8. The documents containing the information specified in Part I will be delivered to the participants in the Amrize Ltd 2025 Omnibus Incentive Plan and the Amrize Ltd Employee Stock Purchase Plan (the "Plans"), as covered by this Registration Statement and as required by Rule 428(b)(1). These documents and the documents incorporated by reference in this Registration Statement pursuant to Item 3 of Part II of Form S-8, taken together, constitute a prospectus that meets the requirements of Section 10(a) of the Securities Act.

PART II

INFORMATION REQUIRED IN THE REGISTRATION STATEMENT

The following documents of the Registrant filed with the Securities and Exchange Commission (the "SEC") are incorporated in this Registration Statement by reference and made a part hereof:

(a) Registration Statement on Form 10 (File No. 001-42542) initially filed with the SEC on February 28, 2025, as amended by Amendment #1 as filed with the SEC on May 7, 2025 (as so amended, the "Form 10 Registration Statement");

(b) The description of the Registrant's ordinary shares, par value $0.01, contained in the Information Statement filed as Exhibit 99.1 to the Form 10 Registration Statement, including any amendments or supplements thereto; and

(c) Current Reports on Form 8-K (excluding any information and exhibits furnished under either Item 2.02 or Item 7.01 thereof), as filed with the SEC on June 2, 2025, June 3, 2025, June 18, 2025 and June 23, 2025.

All reports and other documents subsequently filed by the Registrant with the SEC pursuant to Sections 13(a), 13(c), 14 and 15(d) of the Exchange Act after the date of this Registration Statement, but prior to the filing of a post-effective amendment to this Registration Statement that indicates that all securities offered by this Registration Statement have been sold or which deregisters all such securities then remaining unsold, shall be deemed to be incorporated by reference into this Registration Statement; provided, however, that the Registrant is not incorporating by reference any information furnished (but not filed) under Item 2.02 or Item 7.01 of any Current Report on Form 8-K. Each document incorporated by reference into this Registration Statement shall be deemed to be a part of this Registration Statement from the date of filing of such document with the SEC until and to the extent the information contained therein is superseded or modified by any subsequently filed document that is incorporated by reference into this Registration Statement or by any document that constitutes part of the prospectus relating to the Plans, each meeting the requirements of Section 10(a) of the Securities Act.

Not Applicable.

Not Applicable.

II-1

Subject to Swiss law, the Registrant's articles of association provide for indemnification of the members of the Registrant's board of directors and executive management against liabilities arising in connection with the performance of their duties in such capacity, and permit the Registrant to advance the expenses of defending any act, suit or proceeding to such persons to the extent not included in insurance coverage or advanced by third parties.

Under Swiss corporate law, an indemnification by the corporation of a director or member of the executive management in relation to potential personal liability is not effective to the extent the director or member of the executive management intentionally or grossly negligently violated his or her corporate duties towards the corporation. Furthermore, the general meeting of shareholders may discharge (release) the directors and members of the executive management from liability for their conduct to the extent the respective facts are known to shareholders. Such discharge is effective only with respect to claims of the corporation and of those shareholders who approved the discharge or who have since acquired their shares in full knowledge of the discharge. Most violations of corporate law are regarded as violations of duties towards the corporation rather than towards the shareholders. In addition, indemnification of other controlling persons, including shareholders of the corporation, is not permitted under Swiss corporate law.

The articles of association of a Swiss corporation may also set forth that the corporation shall indemnify and hold harmless, to the extent permitted by the law, the directors and executive managers out of assets of the corporation against threatened, pending or completed actions. Also, a corporation may enter into and pay for directors' and officers' liability insurance, which may cover negligent acts as well.

The Registrant also expects to purchase and maintain directors' and officers' liability insurance that covers certain liabilities and expenses of its directors and officers or any person who is or was or has agreed to become a director or officer or is or was serving or who has agreed to serve at the request of the Registrant as a director or officer of another corporation, partnership, joint venture, trust or other enterprise and that covers the Registrant for reimbursement of payments to its directors and officers and such persons in respect of such liabilities and expenses; provided that such insurance is available on acceptable terms, which determination shall be made by the Registrant's board of directors from time to time as appropriate.

Not Applicable.

4.1	Articles of Association of Amrize Ltd (Exhibit 3.1 to the Amrize Ltd Current Report on Form 8-K dated June 23, 2025).
4.2	Organizational Resolutions of Amrize Ltd (Exhibit 3.2 to the Amrize Ltd Current Report on Form 8-K dated June 23, 2025).
4.3*	Amrize Ltd 2025 Omnibus Incentive Plan.
4.4*	Amrize Ltd Employee Stock Purchase Plan.
5.1*	Opinion of Bär & Karrer AG.
23.1*	Consent of Ernst & Young AG.
23.2*	Consent of Bär & Karrer AG (contained in Exhibit 5.1).
24.1*	Powers of Attorney (contained on the signature page hereto).
107*	Filing Fee Table.

*	Filed herewith

II-2

provided, however, paragraphs (a)(1)(i) and (a)(1)(ii) of this section do not apply if the information required to be included in a post-effective amendment by those paragraphs is contained in reports filed with or furnished to the SEC by the Registrant pursuant to section 13 or section 15(d) of the Exchange Act that are incorporated by reference in this Registration Statement;

II-3

SIGNATURES

Pursuant to the requirements of the Securities Act, the Registrant certifies that it has reasonable grounds to believe that it meets all of the requirements for filing on Form S-8 and has duly caused this Registration Statement on Form S-8 to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Chicago, State of Illinois.

POWER OF ATTORNEY AND SIGNATURES

Each person whose signature appears below constitutes and appoints Denise R. Singleton as his or her true and lawful attorney-in-fact and agent, acting alone with full power of substitution and resubstitution, for him or her and in his or her name, place and stead, in any and all capacities, to sign any or all amendments (including post-effective amendments) and exhibits to the Registration Statement on Form S-8, and to any registration statement filed under SEC Rule 462, and to file the same, with all exhibits thereto, and all documents in connection therewith, with the SEC, granting unto said attorney-in-fact and agent, full power and authority to do and perform each and every act and thing requisite and necessary to be done in and about the premises, as fully to all intents and purposes as he or she might or could do in person, hereby ratifying and confirming all that said attorney-in-fact and agent, or his or her substitute or substitutes, may lawfully do or cause to be done by virtue hereof.

Pursuant to the requirements of the Securities Act, this Registration Statement has been signed by the following persons in the capacities and on the dates indicated.