[Form 4] Amrize Ltd Insider Trading Activity

Rhea-AI Filing Summary

Amrize Ltd (AMRZ) insider activity: On 10/30/2025, the company’s Chairman & CEO, who is also a Director, reported two open‑market purchases (Transaction Code P): 55,000 ordinary shares at a weighted average price of $52.64 (converted from CHF 42.05) and 55,000 ordinary shares at a weighted average price of $52.88. The purchases were executed in multiple trades within the stated price ranges.

Following these transactions, beneficial ownership was 1,505,000 shares held directly and 505,000 shares held indirectly by spouse.

Insights

Corporate governance analyst

Open‑market CEO buying reported; neutral near‑term signal.

The filing shows the Chairman & CEO executed open‑market purchases (Code P) of ordinary shares on 10/30/2025, with weighted average prices of $52.64 and $52.88. These were completed via multiple trades within disclosed price ranges, one set converted from CHF.

Post‑trade, reported beneficial ownership stands at 1,505,000 shares direct and 505,000 indirect via spouse. While insider buying can indicate confidence, actual impact depends on company fundamentals and market context not included in this excerpt.

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^*

Jenisch Jan Philipp

(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)

X	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chairman & CEO

3. Date of Earliest Transaction (Month/Day/Year)
10/30/2025

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	10/30/2025		P		55,000	A	$52.64(1)	1,505,000	D
Ordinary Shares	10/30/2025		P		55,000	A	$52.88(2)	505,000	I	By spouse

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 shares were purchased in multiple transactions at prices ranging from CHF 41.90 to CHF 42.45, inclusive. This amount represents the CHF 42.05 weighted average price of such transactions, and such price was converted into US Dollars using the transaction date exchange rate of (USD 1.00 = CHF 0.7988). The reporting person undertakes to provide full information regarding the number of shares purchased at each separate price upon request of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer.

2. The shares were purchased in multiple transactions at prices ranging from $52.28 to $53.11, inclusive. This amount represents the $52.88 weighted average price of such transactions. The reporting person undertakes to provide full information regarding the number of shares purchased at each separate price upon request of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer.

	Hans Weinburger, Attorney-in-Fact	10/31/2025
	** 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 insider transactions did AMRZ report on Form 4?

Two open‑market purchases (Code P) on 10/30/2025: 55,000 shares at a $52.64 weighted average and 55,000 shares at a $52.88 weighted average.

What are the insider’s holdings in AMRZ after these trades?

Beneficial ownership reported as 1,505,000 shares directly and 505,000 shares indirectly by spouse.

Were the AMRZ purchases single trades or multiple executions?

Multiple executions within stated price ranges; the reported prices are weighted averages.

Did the AMRZ filing involve any derivative securities?

No derivative transactions were listed in Table II for this report.

Were currency conversions involved in these AMRZ trades?

Yes. One set of purchases used CHF prices (weighted average CHF 42.05) converted to USD at the transaction date rate.

What does Transaction Code P mean for AMRZ’s Form 4?

Code P indicates open‑market or private purchase of non‑derivative securities.