Amrize appoints Mario Gross to lead building unit
Amrize Ltd is transitioning leadership of its Building Envelope segment as Mario Gross succeeds Jake Gosa while a 12‑month notice period runs through September 2027.
Rhea-AI Filing Summary
Amrize Ltd (AMRZ) announced a leadership change in its Building Envelope segment. On September 6, 2026, Jake Gosa, President, Building Envelope, gave notice of his decision to resign, triggering a 12‑month termination notice period that runs until September 6, 2027, during which he will remain an employee. On September 11, 2026, the Board appointed Mario Gross as President, Building Envelope, effective the same day. Gross has served as Amrize’s Chief Supply Chain Officer since its NYSE listing in June 2025 and previously was Chief Operating Officer of the Building Envelope business. Amrize describes itself as a partner to professional builders across North America, operating over 1,000 sites with 19,000 teammates and generating $11.8 billion in revenue in 2025.
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Filing Explained
Jake Gosa’s resignation started a 12-month termination notice period ending
8-K Event Classification
3 items: 5.02, 7.01, 9.01
3 items
Item 5.02
Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers
Governance
Key personnel changes including departures, elections, or appointments of directors and executive officers.
Item 7.01
Regulation FD Disclosure
Disclosure
Material non-public information disclosed under Regulation Fair Disclosure, often investor presentations or guidance.
Item 9.01
Financial Statements and Exhibits
Exhibits
Financial statements, pro forma financial information, or exhibit attachments filed with this report.
Key Figures
Revenue 2025: $11.8 billion
Termination notice period: 12 months
Notice period end date: September 6, 2027
+3 more
6 metrics
Revenue 2025
$11.8 billion
Amrize revenue achieved in 2025
Termination notice period
12 months
Employment agreement notice period for Jake Gosa’s resignation starting September 6, 2026
Notice period end date
September 6, 2027
Date through which Jake Gosa remains an employee under his termination notice period
Effective date of new President, Building Envelope
September 11, 2026
Date Mario Gross became President, Building Envelope
Operating sites
Over 1,000 sites
Amrize’s locations across the U.S. and Canada
Workforce
19,000 teammates
Amrize’s stated employee count
Key Terms
Building Envelope, forward-looking statements, Private Securities Litigation Reform Act, separation from Holcim, +1 more
5 terms
Building Envelope technical
"appointed Mario Gross as President, Building Envelope, effective September 11, 2026"
The building envelope is the outer shell of a structure—walls, roof, windows and doors—that separates indoor space from the outside world. It matters to investors because its quality controls energy use, weatherproofing, durability and maintenance costs; think of it like a jacket for a building that determines comfort, utility bills and long-term repair needs, all of which affect property value and operating profits.
forward-looking statements regulatory
"Certain statements in this release may be considered forward-looking statements"
Forward-looking statements are predictions or plans that companies share about what they expect to happen in the future, like estimating sales or profits. They matter because they help investors understand a company's outlook, but since they are based on guesses and assumptions, they can sometimes be wrong.
Private Securities Litigation Reform Act regulatory
"forward-looking statements within the meaning of the Private Securities Litigation Reform Act"
A federal law that changed how lawsuits by private investors against public companies over alleged securities fraud are started and handled. It requires plaintiffs to show specific facts about alleged wrongdoing up front, limits certain types of legal damages and stops lawyers from shopping for plaintiffs, so companies face fewer frivolous suits and investors know stronger cases move forward. Think of it as tightened screening at the courthouse to reduce baseless claims and clarify legal risk for investors.
separation from Holcim financial
"benefits or opportunities expected from the separation from Holcim Ltd"
risk factors financial
"including Item 1A. “Risk Factors.”"
Risk factors are elements or conditions that could cause an investment's value to decrease or lead to potential losses. They are like warning signs or obstacles that can affect the success of an investment, making it uncertain or more unpredictable. Recognizing risk factors helps investors understand the possible challenges and make more informed decisions.
FAQ
AI-generated questions and answers. How Rhea-AI works. Not financial advice.
What executive leadership change did Amrize Ltd (AMRZ) announce?
Amrize announced that Jake Gosa, President, Building Envelope, notified the company on September 6, 2026 of his decision to resign, and that the Board appointed Mario Gross as the new President, Building Envelope, effective September 11, 2026.
When does Jake Gosa’s employment with AMRZ end under his notice period?
Jake Gosa’s resignation triggered a 12‑month termination notice period under his employment agreement, lasting until September 6, 2027. During this period, he will remain an employee to support a smooth transition in the Building Envelope business.
What is Mario Gross’s background before becoming President of Building Envelope at Amrize (AMRZ)?
Before becoming President, Building Envelope, Mario Gross was Amrize’s Chief Supply Chain Officer since its NYSE listing in June 2025 and previously served as Chief Operating Officer of the Building Envelope business from 2024 to 2025, after roles at Holcim and Sika.
How large is Amrize Ltd’s business in terms of revenue and footprint?
Amrize reports $11.8 billion in revenue in 2025, operates over 1,000 sites, and has 19,000 teammates. The company serves construction markets across every U.S. state and Canadian province with solutions from foundation to rooftop.
What type of products and markets does Amrize (AMRZ) focus on?
Amrize describes its Building Envelope segment as providing commercial and residential roofing, weatherproofing and insulation systems. More broadly, it serves infrastructure, commercial and residential construction markets, including new build, repair and refurbishment projects across North America.
AI-generated analysis. How Rhea-AI works. Not financial advice.
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, DC 20549
FORM 8-K
CURRENT REPORT
Pursuant to Section 13 or 15(d)
of the Securities Exchange Act of 1934
Date of Report (Date of earliest event reported): September 6, 2026
(Exact name of registrant as specified in its charter)
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(State or other jurisdiction of incorporation)
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(Commission File Number)
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(IRS Employer Identification No.)
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(Address of principal executive offices, including Zip Code)
+ 41 562 3490
(Registrant’s telephone number, including area code)
N/A
(Former name or former address, if changed since last report)
Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:
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Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
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Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
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Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
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Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))
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Securities registered pursuant to Section 12(b) of the Act:
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Title of each class
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Trading Symbol(s)
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Name of each exchange on which registered
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Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of
the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).
Emerging growth company ☐
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised
financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐
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Item 5.02.
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Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain
Officers.
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On September 6, 2026, Mr. Jake Gosa, the President, Building Envelope of Amrize Ltd (the “Company”), notified the Company of his decision to resign, which commenced the
12-month termination notice period under his employment agreement. The termination notice period will last until September 6, 2027, during which time Mr. Gosa will remain an employee. On September 11, 2026, the Company announced that its Board of
Directors appointed Mario Gross to replace Mr. Gosa as President, Building Envelope, effective as of September 11, 2026.
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Item 7.01.
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Regulation FD Disclosure.
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On September 11, 2026, the Company issued a press release announcing the matters described in Item 5.02 hereof. A copy of the Company’s press release is being furnished
as Exhibit 99.1 to this Form 8-K. The exhibit attached hereto shall not be deemed “filed” for purposes of Section 18 of the Exchange Act, or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference in any
filing under the Securities Act of 1933, as amended.
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Item 9.01
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Financial Statements and Exhibits.
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(d)
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Exhibits
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Exhibit
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Number
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Exhibit
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99.1
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Press Release dated September 11, 2026.
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104
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Cover Page Interactive Data File (formatted as Inline XBRL).
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SIGNATURE
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly
authorized.
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AMRIZE LTD
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/s/ Denise Singleton
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Date: September 11, 2026
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Name:
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Denise Singleton
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Title:
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Chief Legal Officer and Corporate Secretary
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Exhibit 99.1
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Media Release
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Amrize Appoints Mario Gross as President of Building Envelope
CHICAGO & ZUG, Switzerland, September 11, 2026
– The Amrize (NYSE: AMRZ) Board of Directors has appointed Mario Gross as President, Building Envelope, effective September 11, 2026. Gross succeeds Jake Gosa, who is stepping down from the role and is committed to a
smooth transition.
Gross has been a member of Amrize’s Executive Committee as its Chief Supply Chain Officer since the company’s listing on the NYSE in June 2025. He previously served as
Chief Operating Officer of the Building Envelope business from 2024 to 2025, where he led operations to establish the segment as a leading provider of commercial and residential roofing, weatherproofing and insulation systems. Prior, Gross served
in various commercial and operational roles of increasing responsibility at Holcim and Sika.
Jan Jenisch, Chairman and CEO: “Mario is an exceptional leader with deep operational expertise, understanding of our Building Envelope business and a track record of
delivering results. I am excited to welcome Mario as President of Building Envelope and look forward to working with him in his new role as we continue to deliver for our customers, drive operational performance and deliver long term, profitable
growth. I thank Jake for his contributions at Amrize and we wish him well in his future endeavors.”
About Amrize
Amrize (NYSE: AMRZ) is building North America, as the partner of choice for professional builders with advanced branded solutions from foundation to
rooftop. With over 1,000 sites and a highly efficient distribution network, we deliver for our customers in every U.S. state and Canadian province. Our 19,000 teammates uniquely serve every construction market from infrastructure, commercial and
residential to new build, repair and refurbishment. Amrize achieved $11.8 billion in revenue in 2025 and is listed on the New York Stock Exchange and the SIX Swiss Exchange. We are ready to build your ambition. Learn more at amrize.com
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Media Relations: media@amrize.com
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Investor Relations: investors@amrize.com
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Media Release
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Cautionary Note Regarding Forward-Looking Statements
Certain statements in this release may be considered forward-looking statements within the meaning of the Private Securities Litigation Reform Act, such as statements
regarding expected cost savings, future financial targets, business strategies, management’s views with respect to future events and financial performance, and the assumptions underlying such expected cost savings, targets, strategies, and
statements. These forward-looking statements concern our goals, beliefs, expectations, strategies, objectives, plans, future operating results and underlying assumptions, and other statements that are not necessarily based on historical facts.
Without limitation, you can identify these statements by the fact that they do not relate strictly to historical or current facts, and these statements may contain words such as “may,” “will,” “could,” “should,” “might,” “projects,” “expects,”
“believes,” “anticipates,” “intends,” “plans,” “continue,” “estimate,” or “pursue,” or similar expressions, or the negative or other variations thereof or comparable terms. In particular, they include statements relating to, among other things,
future actions, strategies, future performance, future revenues, income and cash flows, the outcome of contingencies such as legal proceedings, and regulatory compliance. Actual results may differ materially from those contemplated (expressed or
implied) by such forward-looking statements because of, among other things, potential risks and uncertainties, such as: the effect of political, economic and market conditions and geopolitical events; the level of demand in the construction
industry; the cyclicality of the industries and businesses in which our customers operate; changes in the cost and/or availability of raw materials required to run our business; energy and fuel costs; adverse weather conditions and natural
disasters; the logistical and other challenges inherent in our operations; the actions and initiatives of current and potential competitors; the level and volatility of, interest rates and other market indices; the ability of Amrize to realize the
expected synergies for our acquisitions; the ability of Amrize to achieve margin expansion goals; the ability of Amrize to maintain satisfactory credit ratings; the outcome of pending litigation or future litigation; the impact of current, pending
and future legislation and regulation; factors related to the failure of Amrize to achieve some or all of the expected strategic benefits or opportunities expected from the separation from Holcim Ltd (“Holcim”); material costs and expenses as a
result of the separation from Holcim; our limited history operating as an independent, publicly traded company; our obligation to indemnify Holcim pursuant to the agreements entered into connection with the separation and the risk Holcim may not
fulfill any obligations to indemnify Amrize under such agreements; that under applicable tax law, Amrize may be liable for certain tax liabilities of Holcim following the separation if Holcim were to fail to pay such taxes; the fact that Amrize may
receive worse commercial terms from third-parties for services it used to receive from Holcim prior to the separation; the fact that certain of Amrize’s executive officers and directors may have actual or potential conflicts of interest because of
their previous positions at Holcim; and potential difficulties in maintaining relationships with key personnel; and other factors which can be found in Amrize’s media releases and Amrize’s filings with the SEC, including in the our Annual Report on
Form 10-K for the year ended December 31, 2025, including Item 1A. “Risk Factors.”
The forward-looking statements made in this release are made only as of the date hereof or as of the dates indicated in the forward-looking statements and reflect the
views stated therein with respect to future events as at such dates, even if they are subsequently made available by Amrize on its website or otherwise. Readers are cautioned not to put undue reliance on forward-looking statements. These statements
are not guarantees of future performance and are subject to future events, risks and uncertainties – many of which are beyond our control, dependent on the actions of third parties, or currently unknown to us – as well as potentially inaccurate
assumptions that could cause actual results to differ materially from our historical experience and our expectations and projections. We do not undertake or assume any obligation to update or revise any forward-looking statement, whether as a
result of new information, future developments, or otherwise. You are advised, however, to review any further disclosures we make on related subjects in our filings with the Securities and Exchange Commission and in our other public statements.
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Media Relations: media@amrize.com
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Investor Relations: investors@amrize.com
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