[Form 4] Amrize Ltd Insider Trading Activity

Rhea-AI Filing Summary

Ian A. Johnston, identified as Chief Financial Officer, executed multiple purchases totaling 10,500 ordinary shares of Amrize Ltd on 08/08/2025 at prices between $47.66 and $47.75 per share. The reported transactions raised his beneficial ownership to 17,344 ordinary shares. The Form 4 lists only non-derivative purchases in separate lots and shows no derivative holdings reported.

Positive

• Insider purchases totaling 10,500 ordinary shares at prices between $47.66 and $47.75
• Reported beneficial ownership increased to 17,344 ordinary shares, showing higher insider stake

Negative

• None.

Insights

Securities Analyst

TL;DR: Multiple insider buys totaling 10,500 shares at about $47.7 raise the CFO's stake to 17,344, a signaling event but not clearly material alone.

The transaction record documents a series of purchases executed on 08/08/2025, with per-share prices ranging $47.66–$47.75. Aggregate insider purchases of 10,500 shares can be interpreted as a positive disclosure signal from management; however, without company market-cap or outstanding share count in this filing, the absolute materiality for investors is unclear. No options, warrants, or other derivative instruments were reported.

Corporate Governance Expert

TL;DR: Form 4 shows compliant, itemized reporting of multiple ordinary-share purchases by the CFO; disclosure appears complete for non-derivative activity.

The filing provides line-item detail for each lot purchased and the cumulative beneficial ownership following the trades. The report identifies the reporting person as Chief Financial Officer and documents only purchases of ordinary shares. From a governance and disclosure perspective, the Form 4 fulfills Section 16 reporting of insider acquisitions; there are no amendments, derivative positions, or denial-of-filing indicators present in the text provided.

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^*

Johnston Ian A

(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 Financial 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		5,370	A	$47.73	12,214	D
Ordinary Shares	08/08/2025		P		1,459	A	$47.68	13,673	D
Ordinary Shares	08/08/2025		P		1,041	A	$47.67	14,714	D
Ordinary Shares	08/08/2025		P		750	A	$47.71	15,464	D
Ordinary Shares	08/08/2025		P		575	A	$47.69	16,039	D
Ordinary Shares	08/08/2025		P		500	A	$47.74	16,539	D
Ordinary Shares	08/08/2025		P		300	A	$47.72	16,839	D
Ordinary Shares	08/08/2025		P		150	A	$47.7	16,989	D
Ordinary Shares	08/08/2025		P		111	A	$47.73	17,100	D
Ordinary Shares	08/08/2025		P		100	A	$47.715	17,200	D
Ordinary Shares	08/08/2025		P		100	A	$47.75	17,300	D
Ordinary Shares	08/08/2025		P		44	A	$47.66	17,344	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:

	Hans Weinburger, Attorney-in-Fact	08/11/2025
	** 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

Who reported the trades for Amrize (AMRZ)?

Ian A. Johnston, identified in the filing as the company's Chief Financial Officer, is the reporting person.

How many shares did the Amrize (AMRZ) insider buy?

10,500 ordinary shares were purchased in multiple lots as reported in the Form 4.

At what prices were the Amrize (AMRZ) shares purchased?

The reported lot prices range from $47.66 to $47.75 per share.

What is the reporting person’s total beneficial ownership after these transactions?

17,344 ordinary shares beneficially owned following the reported purchases.

Were any derivative securities reported in the Amrize (AMRZ) Form 4?

No derivative securities (options, warrants, convertible instruments) are listed in the provided Table II.