[Form 4] Amrize Ltd Insider Trading Activity

Rhea-AI Filing Summary

Jan Philipp Jenisch, Chairman & CEO and director of Amrize Ltd (AMRZ), reported multiple purchases on 08/08/2025 totaling 500,000 ordinary shares — 100,000 acquired directly and 400,000 acquired indirectly by spouse. The trades were executed in Swiss francs at CHF 37.40–CHF 38.44 and converted at the transaction-date rate (USD 1.00 = CHF 0.8086), producing reported USD prices of approximately $46.25–$47.54 per share. Following these transactions the filing shows 905,000 shares beneficially owned directly and 400,000 shares beneficially owned indirectly by spouse. The Form 4 was signed by an attorney-in-fact on 08/12/2025.

Insights

Financial Analyst

TL;DR: Insider purchases totaling 500,000 shares at ~$46–$47 signal meaningful insider accumulation on 08/08/2025.

The filing documents purchases executed in Swiss francs and converted to USD, with per-share USD prices reported between $46.25 and $47.54. The reporting person, who is both Chairman & CEO and a director, increased direct beneficial ownership to 905,000 shares and the spouse holds 400,000 shares indirectly after these transactions. From a capital-allocation perspective, concentrated open-market purchases by senior management increase insider stake and reduce free float, which can be material depending on total shares outstanding.

Corporate Governance Expert

TL;DR: Form 4 discloses compliant reporting of multiple purchases and attorney-in-fact signature on 08/12/2025.

The submission identifies the reporting person, relationship to the issuer (Chairman & CEO, director), transaction date (08/08/2025), and an attorney-in-fact signature. Purchases were converted from CHF using the stated exchange rate, and Table II shows no derivative transactions. The filing provides clear disclosure of direct and indirect beneficial ownership levels after the reported trades.

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

OMB APPROVAL

OMB Number:			3235-0287
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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^*

Jenisch Jan Philipp

(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)

X	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chairman & CEO

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

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	08/08/2025		P		90,000	A	$46.25(1)	895,000	D
Ordinary Shares	08/08/2025		P		10,000	A	$46.25(1)	905,000	D
Ordinary Shares	08/08/2025		P		268	A	$46.33(2)	268	I	By spouse
Ordinary Shares	08/08/2025		P		186	A	$46.36(3)	454	I	By spouse
Ordinary Shares	08/08/2025		P		99,546	A	$46.38(4)	100,000	I	By spouse
Ordinary Shares	08/08/2025		P		100,000	A	$46.43(5)	200,000	I	By spouse
Ordinary Shares	08/08/2025		P		60,000	A	$47.54(6)	260,000	I	By spouse
Ordinary Shares	08/08/2025		P		100,000	A	$46.25(1)	360,000	I	By spouse
Ordinary Shares	08/08/2025		P		40,000	A	$47.4	400,000	I	By spouse

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:

1. The purchase was made in Swiss Francs at a price of CHF 37.40 per share, and converted into US Dollars using the transaction date exchange rate of (USD 1.00 = CHF 0.8086).

2. The purchase was made in Swiss Francs at a price of CHF 37.46 per share, and converted into US Dollars using the transaction date exchange rate of (USD 1.00 = CHF 0.8086).

3. The purchase was made in Swiss Francs at a price of CHF 37.49 per share, and converted into US Dollars using the transaction date exchange rate of (USD 1.00 = CHF 0.8086).

4. The purchase was made in Swiss Francs at a price of CHF 37.50 per share, and converted into US Dollars using the transaction date exchange rate of (USD 1.00 = CHF 0.8086).

5. The purchase was made in Swiss Francs at a price of CHF 37.54 per share, and converted into US Dollars using the transaction date exchange rate of (USD 1.00 = CHF 0.8086).

6. The purchase was made in Swiss Francs at a price of CHF 38.44 per share, and converted into US Dollars using the transaction date exchange rate of (USD 1.00 = CHF 0.8086).

	Hans Weinburger, Attorney-in-Fact	08/12/2025
	** 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).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
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