Amrize (AMRZ) insider Roald Brouwer reports 3,000-share purchases in August

Rhea-AI Filing Summary

Amrize Ltd (AMRZ) reporting person Roald Brouwer, identified as Chief Technology Officer and director, purchased ordinary shares across three dates in August 2025. The Form 4 shows purchases of 1,000 shares on 08/08/2025 at $46.25, 1,000 shares on 08/11/2025 (782 at $48.08 and 218 at $48.07), and 1,000 shares on 08/12/2025 at $46.84, bringing his beneficial ownership to 3,000 shares following these transactions. The filing discloses that each purchase was executed in Swiss francs and converted to U.S. dollars using transaction-date exchange rates provided for each trade.

The report is limited to equity purchases and shows no derivative transactions. All amounts and conversion notes are presented on the Form 4; no additional financial results or company-level context are included in this filing.

Insights

Financial Analyst

TL;DR: CTO Roald Brouwer acquired 3,000 AMRZ shares across Aug 8–12 at ~$46–$48 each, raising his direct stake to 3,000 shares.

The Form 4 documents open-market purchases totaling 3,000 ordinary shares, executed in Swiss francs and converted to USD at the transaction-date rates disclosed. The trades increased Brouwer's direct beneficial ownership to 3,000 shares. The filing contains no information about company valuation, outstanding share count, or plan-based transactions, so the absolute and percentage impact on ownership and dilution cannot be assessed from this form alone. The transactions are non-derivative and appear to be straightforward purchases without associated derivatives or dispositions.

Corporate Governance Expert

TL;DR: Officer/director reported multiple purchases disclosed with currency conversion details; holdings now recorded as 3,000 shares.

The filing identifies Brouwer as both an officer and director and reports multiple purchases with explicit conversion from CHF to USD for each trade, which supports transparent disclosure of transaction economics. Table II lists no derivative activity, indicating the transactions were equity purchases only. The signature block shows an attorney-in-fact submitted the form. The document provides clear transaction-level disclosure but lacks contextual metrics (e.g., percentage ownership, share class totals) needed to evaluate governance or control implications.

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

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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^*

Brouwer Roald

(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 Technology Officer

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		1,000	A	$46.25(1)	1,000	D
Ordinary Shares	08/11/2025		P		782	A	$48.08(2)	1,782	D
Ordinary Shares	08/11/2025		P		218	A	$48.07(3)	2,000	D
Ordinary Shares	08/12/2025		P		1,000	A	$46.84(4)	3,000	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:

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 38.87 per share, and converted into US Dollars using the transaction date exchange rate of (USD 1.00 = CHF 0.8084).

3. The purchase was made in Swiss Francs at a price of CHF 38.86 per share, and converted into US Dollars using the transaction date exchange rate of (USD 1.00 = CHF 0.8084).

4. The purchase was made in Swiss Francs at a price of CHF 37.94 per share, and converted into US Dollars using the transaction date exchange rate of (USD 1.00 = CHF 0.8100).

	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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FAQ

What trades did AMRZ CTO Roald Brouwer report on Form 4?

The Form 4 reports purchases of 1,000 shares on 08/08/2025 at $46.25, 1,000 shares on 08/11/2025 (782 at $48.08 and 218 at $48.07), and 1,000 shares on 08/12/2025 at $46.84.

How many AMRZ shares does Roald Brouwer beneficially own after these transactions?

Following the reported purchases, the filing shows 3,000 shares beneficially owned by Roald Brouwer.

Were the AMRZ purchases made in U.S. dollars or another currency?

Each purchase was executed in Swiss francs and converted to U.S. dollars; the filing lists the CHF per-share prices and the transaction-date USD conversion rates for each trade.

Did the Form 4 report any derivative transactions or dispositions for AMRZ?

No. Table II lists no derivative securities, and the reported entries are non-derivative purchases with no dispositions shown.

What is Roald Brouwer's role at AMRZ as disclosed on the Form 4?

The Form 4 identifies Roald Brouwer as a Director and the Chief Technology Officer (Officer) of Amrize Ltd.