[Form 4] Amrize Ltd Insider Trading Activity

Rhea-AI Filing Summary

Clark Stephen S, identified as the company's Chief People Officer, reported multiple open-market purchases of Amrize Ltd (AMRZ) ordinary shares executed on 08/15/2025. The transactions incrementally added shares at prices ranging from $51.625 to $51.86, resulting in a total reported beneficial ownership of 5,000 ordinary shares following these purchases. No derivative securities are reported on this form.

The purchases were reported on a single Form 4 filing and were executed in several lots (examples: 100 shares at $51.625, 1,000 shares at $51.82, 1,040 shares at $51.83), showing consistent acquisition prices around $51.63–$51.86 per share.

Insights

Financial Analyst

TL;DR: Insider purchases totaling 5,000 shares at ~ $51.63–$51.86 suggest officer-level buying but represent a routine disclosure without company context.

The filing documents multiple market purchases by an executive rather than option exercises or derivative transactions. Aggregating the reported lots produces a beneficial ownership of 5,000 ordinary shares acquired at prices clustered near $51.8 per share. Without information on outstanding shares, total insider holdings before the purchases, or the company's market capitalization, the transactions are observable insider buying but cannot be assessed for material impact on valuation or control.

Corporate Governance Expert

TL;DR: A Chief People Officer reporting open-market purchases is a standard Section 16 disclosure; it raises governance transparency but is not inherently material.

The Form 4 shows clear, incremental acquisitions by an officer on a single transaction date. The disclosure meets Section 16 reporting requirements and contains no derivatives or indications of planned sales or hedging. In absence of linked events (e.g., compensation grants, extraordinary transactions), this is a routine insider purchase disclosure that improves transparency but does not signal governance changes.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Clark Stephen S

(Last) (First) (Middle)

GRAFENAUWEG 8

(Street)

ZUG V8 6300

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Amrize Ltd [ AMRZ ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief People Officer

3. Date of Earliest Transaction (Month/Day/Year)
08/15/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Ordinary Shares	08/15/2025		P		100	A	$51.625	100	D
Ordinary Shares	08/15/2025		P		70	A	$51.63	170	D
Ordinary Shares	08/15/2025		P		22	A	$51.78	192	D
Ordinary Shares	08/15/2025		P		100	A	$51.79	292	D
Ordinary Shares	08/15/2025		P		367	A	$51.8	659	D
Ordinary Shares	08/15/2025		P		301	A	$51.81	960	D
Ordinary Shares	08/15/2025		P		1,000	A	$51.82	1,960	D
Ordinary Shares	08/15/2025		P		1,040	A	$51.83	3,000	D
Ordinary Shares	08/15/2025		P		500	A	$51.84	3,500	D
Ordinary Shares	08/15/2025		P		1,100	A	$51.85	4,600	D
Ordinary Shares	08/15/2025		P		400	A	$51.86	5,000	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

	Hans Weinburger, Attorney-in-Fact	08/18/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
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