Amrize (AMRZ) CTO adds 1,500 Ordinary Shares in open-market buy

Rhea-AI Filing Summary

Amrize Ltd Chief Technology Officer Brouwer Roald made an open-market purchase of company stock. He bought 1,500 Ordinary Shares on May 21, 2026 at a price of $49.84 per share. After this transaction, he directly owns 19,757 Ordinary Shares.

The shares were purchased in Swiss Francs at a price of CHF 39.22 per share, with the amount converted to U.S. dollars using the transaction date exchange rate of USD 1.00 = CHF 0.7869.

Insider Trade Summary

Net Buyer: 1,500 shares ($74,760)

Net Buy 1 txn

Insider Brouwer Roald

Role Chief Technology Officer

Bought 1,500 shs ($75K)

Type	Security	Shares	Price	Value
Purchase	Ordinary Shares	1,500	$49.84	$75K

Holdings After Transaction: Ordinary Shares — 19,757 shares (Direct, null)

Footnotes (1)

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Key Figures

Shares purchased: 1,500 shares Purchase price per share: $49.84 per share Holdings after transaction: 19,757 shares +2 more

5 metrics

Shares purchased 1,500 shares Ordinary Shares bought on May 21, 2026

Purchase price per share $49.84 per share Open-market purchase price in U.S. dollars

Holdings after transaction 19,757 shares Total Ordinary Shares directly owned after purchase

CHF purchase price CHF 39.22 per share Original price in Swiss Francs before conversion

FX rate used USD 1.00 = CHF 0.7869 Transaction date exchange rate applied to convert price

Key Terms

open-market purchase, Ordinary Shares, transaction date exchange rate

3 terms

open-market purchase financial

"The transaction is described as an open-market purchase of Ordinary Shares."

An open-market purchase is when an investor or a company buys shares on a public stock exchange at the going market price, rather than through a private deal. It matters to investors because these purchases change how many shares are available, can push the stock price up or signal confidence from large buyers, and often affect per-share metrics like earnings—think of it like someone buying lots of apples off a grocery shelf, reducing supply and potentially raising the price.

Ordinary Shares financial

"He bought 1,500 Ordinary Shares and now holds 19,757 Ordinary Shares."

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.

transaction date exchange rate financial

"The price was converted into U.S. Dollars using the transaction date exchange rate."

Form 4 Insider Transactions: What Each Field Means →

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^*

Brouwer Roald

(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 Technology Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/21/2026

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	05/21/2026		P		1,500	A	$49.84(1)	19,757	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 39.22 per share, and such price was converted into US Dollars using the transaction date exchange rate (USD 1.00 = CHF 0.7869).

	Hans Weinburger, Attorney-in-Fact	05/21/2026
	** 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)

FAQ

What insider transaction did Amrize (AMRZ) report in this Form 4?

Amrize reported that its Chief Technology Officer, Brouwer Roald, made an open-market purchase of 1,500 Ordinary Shares. The shares were bought on May 21, 2026 at a price of $49.84 per share, increasing his direct holdings in the company.

How many Amrize (AMRZ) shares does the CTO hold after this transaction?

Following the reported transaction, Amrize’s Chief Technology Officer directly holds 19,757 Ordinary Shares. This reflects the addition of 1,500 shares purchased in the open market on May 21, 2026 at $49.84 per share, as disclosed in the Form 4.

What price did the Amrize (AMRZ) CTO pay per share in the Form 4 purchase?

The Chief Technology Officer paid $49.84 per Ordinary Share in this transaction. The purchase was originally executed in Swiss Francs at CHF 39.22 per share and then converted into U.S. dollars using the transaction date exchange rate disclosed in the filing.

Was the Amrize (AMRZ) insider transaction an open-market purchase or another type?

The filing identifies the transaction as an open-market purchase of Ordinary Shares. It is coded as a “P” transaction, described as a purchase in the open market or private transaction, and is categorized as a non-derivative transaction in the Form 4 data.

How was the foreign currency handled in the Amrize (AMRZ) insider share purchase?

The shares were purchased in Swiss Francs at CHF 39.22 per share, then converted into U.S. dollars. The conversion used the transaction date exchange rate of USD 1.00 = CHF 0.7869, resulting in the reported U.S. dollar price per share in the Form 4.