Amrize Ltd (AMRZ) supply chain chief purchases 3,568 Ordinary Shares

Rhea-AI Filing Summary

Amrize Ltd executive Mario Gross, Chief Supply Chain Officer, reported buying a total of 3,568 Ordinary Shares on August 11, 2026, in open-market or private transactions. The purchases included 3,200 shares at $46.62 per share, which incorporate 170 shares previously acquired under the Amrize Ltd 2025 Employee Stock Purchase Plan on June 30, 2026, and an additional 368 shares at $46.38 per share, originally priced at CHF 37.62 and converted using an exchange rate of USD 1.00 = CHF 0.8111. The filing does not state Gross’s total holdings after these transactions.

Insider Trade Summary

Net Buyer: 3,568 shares

Net Buy 2 txns

Insider Gross Mario

Role Chief Supply Chain Officer

Bought 3,568 shs ($166K)

Type	Security	Shares	Price	Value
Purchase	Ordinary Shares F1	3,200	$46.62	$149K
Purchase	Ordinary Shares F2	368	$46.38	$17K

Holdings After Transaction: Ordinary Shares — 38,485 shares (Direct)

Footnotes (2)

1. F1. Includes 170 shares acquired under the Amrize Ltd 2025 Employee Stock Purchase Plan on June 30, 2026.
2. F2. The purchase was made in Swiss Francs at a price of CHF 37.62 per share, and such price was converted into US Dollars using the transaction date exchange rate (USD 1.00 = CHF 0.8111).

Key Figures

Total shares purchased: 3,568 shares First purchase size: 3,200 shares Second purchase size: 368 shares +4 more

7 metrics

Total shares purchased 3,568 shares Net insider purchases by Mario Gross on August 11, 2026

First purchase size 3,200 shares Ordinary Shares bought at $46.62 per share

Second purchase size 368 shares Ordinary Shares bought at $46.38 per share

First purchase price $46.62 per share Price for 3,200 Ordinary Shares

Second purchase CHF price CHF 37.62 per share Original currency price for 368 shares before USD conversion

Exchange rate USD 1.00 = CHF 0.8111 Rate used to convert CHF purchase price into U.S. dollars

ESPP shares included 170 shares Shares acquired June 30, 2026 under 2025 Employee Stock Purchase Plan

Key Terms

Ordinary Shares, Employee Stock Purchase Plan, open market or private transaction, exchange rate, +1 more

5 terms

Ordinary Shares financial

"reported buying a total of 3,568 Ordinary Shares on August 11, 2026"

Ordinary shares are a type of ownership stake in a company, giving shareholders a right to participate in the company’s profits and decision-making through voting. They are similar to owning a piece of a business, and their value can rise or fall based on the company's performance. Investors buy ordinary shares to potentially earn dividends and benefit from the company's growth over time.

Employee Stock Purchase Plan financial

"acquired under the Amrize Ltd 2025 Employee Stock Purchase Plan on June 30, 2026"

An employee stock purchase plan is a company program that lets workers buy shares through small payroll deductions, often at a discount to the market price and after a set offering period. Think of it like a workplace savings plan that turns into ownership: it encourages employees to share in the company’s success and can create predictable buying or selling of stock that investors watch because it affects supply, demand and employee incentives.

open market or private transaction financial

"transaction code description shows Purchase in open market or private transaction"

exchange rate financial

"converted into US Dollars using the transaction date exchange rate"

Exchange rate is the price of one currency expressed in another—for example, how many euros you receive for one US dollar. It matters to investors because changes in that price alter the reported profits, costs and value of assets for companies and portfolios that operate or hold money across borders; think of it like switching measurement units, where the same item can look bigger or smaller depending on the unit used.

Form 4 regulatory

"according to the Form 4 insider trading report"

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

FAQ

What insider transactions did Amrize Ltd (AMRZ) report for Mario Gross?

Amrize Ltd reported that Mario Gross, Chief Supply Chain Officer, purchased a total of 3,568 Ordinary Shares on August 11, 2026 in open-market or private transactions, according to the Form 4 insider trading report.

How many Amrize Ltd (AMRZ) shares did Mario Gross buy in each transaction?

Mario Gross purchased 3,200 Ordinary Shares in one transaction and 368 Ordinary Shares in another, for a combined total of 3,568 shares reported on August 11, 2026.

What prices did Mario Gross pay for Amrize Ltd (AMRZ) shares?

The Form 4 shows purchases at $46.62 per share for 3,200 shares and $46.38 per share for 368 shares, with the latter based on a price of CHF 37.62 converted using the stated exchange rate.

What does the footnote about the Amrize Ltd (AMRZ) Employee Stock Purchase Plan mean?

A footnote states that 170 shares in the 3,200-share line were acquired under the Amrize Ltd 2025 Employee Stock Purchase Plan on June 30, 2026 and are included in that reported amount.

Were Mario Gross’s Amrize Ltd (AMRZ) share purchases under a Rule 10b5-1 plan?

The Form 4 indicates the Rule 10b5-1 checkbox is not marked, and no footnote describes a trading plan. The transactions are reported simply as open-market or private purchases of Ordinary Shares.

What currency conversion is disclosed for the Amrize Ltd (AMRZ) insider purchase?

For the 368-share transaction, the price was CHF 37.62 per share, converted to U.S. dollars using an exchange rate of USD 1.00 = CHF 0.8111, resulting in a reported price of $46.38 per share.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Form 4 Insider Transactions: What Each Field Means →

Available on EDGAR 08/13/2026 - 11:30 AM Accepted by SEC EDGAR 08/13/2026 - 11:29 AM Learn about SEC filing dates

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
Estimated average burden
hours per response:			0.5

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 6300

(City) (State) (Zip)

SWITZERLAND

(Country)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
08/11/2026

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

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

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

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	08/11/2026		P		3,200	A	$46.62	38,117(1)	D
Ordinary Shares	08/11/2026		P		368	A	$46.38(2)	38,485	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. Includes 170 shares acquired under the Amrize Ltd 2025 Employee Stock Purchase Plan on June 30, 2026.

2. The purchase was made in Swiss Francs at a price of CHF 37.62 per share, and such price was converted into US Dollars using the transaction date exchange rate (USD 1.00 = CHF 0.8111).

	Hans Weinburger, Attorney-in-Fact	08/13/2026
	** 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.
* Form 4: SEC 1474 (03-26)