[Form 4] Amrize Ltd Insider Trading Activity

Rhea-AI Filing Summary

Mario Gross, Chief Supply Chain Officer of Amrize Ltd (AMRZ), reported two open-market purchases of ordinary shares. The filings show purchases of 5,000 shares on 08/08/2025 and 2,600 shares on 08/11/2025, executed in Swiss francs and converted to U.S. dollars at the stated exchange rates. The reported USD-equivalent prices were $46.78 and $47.75 per share. After these transactions Gross beneficially owned 20,232 shares. The Form 4 discloses the transaction codes as purchases and includes conversion details for transparency.

The filing contains only non-derivative purchases and a manual signature by an attorney-in-fact; no options, dispositions, or other compensatory awards are reported.

Positive

• Insider purchases disclosed: Officer acquired a total of 7,600 ordinary shares in two transactions, indicating insider buying activity.
• Detailed currency conversion provided: Purchases executed in CHF include explicit exchange rates and USD-equivalent prices, improving disclosure transparency.

Negative

• None.

Insights

Financial Analyst

TL;DR: Insider purchases totaling 7,600 shares increase disclosed ownership to 20,232 shares; modestly informative but likely not market-moving.

The Form 4 documents two open-market purchases: 5,000 shares at an effective USD price of $46.78 and 2,600 shares at $47.75, for a total of 7,600 shares acquired. While insider buying can signal confidence, the filing provides no context on company float or market capitalization, limiting assessment of materiality. The disclosure is complete for non-derivative activity and includes currency conversion details, aiding transparency.

Corporate Governance Expert

TL;DR: Filing appears procedurally correct and transparent; transactions were purchased in CHF and properly converted to USD.

The Form 4 identifies the reporting person, role (Chief Supply Chain Officer), transaction codes indicating purchases, and post-transaction beneficial ownership. Conversion rates for CHF-to-USD are provided for each trade, and an attorney-in-fact signed the form. No derivative transactions or compensatory share grants are reported. From a compliance and disclosure standpoint the document meets Section 16 transparency requirements for these 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^*

Gross Mario

(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 Supply Chain 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		5,000	A	$46.78(1)	17,632	D
Ordinary Shares	08/11/2025		P		2,600	A	$47.75(2)	20,232	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 37.83 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 38.60 per share, and converted into US Dollars using the transaction date exchange rate of (USD 1.00 = CHF 0.8084).

	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.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What did Amrize (AMRZ) insider Mario Gross report on Form 4?

The Form 4 reports two purchases totaling 7,600 ordinary shares (5,000 and 2,600 shares) by Mario Gross, the Chief Supply Chain Officer.

At what prices were the AMRZ shares purchased?

The filings show USD-equivalent prices of $46.78 per share (converted from CHF at 0.8086) and $47.75 per share (converted from CHF at 0.8084).

How many AMRZ shares does Mario Gross own after these transactions?

Following the reported purchases, Mario Gross beneficially owned 20,232 shares as disclosed on the Form 4.

Were any derivative securities reported for AMRZ in this filing?

No. The Form 4 contains only non-derivative transactions; Table II for derivative securities shows no entries.

When were the AMRZ transactions executed?

The purchases were executed on 08/08/2025 (5,000 shares) and 08/11/2025 (2,600 shares) as reported in the filing.