Mario Gross, Chief Supply Chain Officer of Amrize Ltd (NYSE American:AMRZ), filed a Form 4 on August 13, 2026, disclosing two open-market purchases of Ordinary Shares on August 11, 2026.

Key Highlights

  • First purchase: Mario Gross acquired 3,200 Ordinary Shares at $46.62 per share on August 11, 2026.
  • Second purchase: Gross acquired an additional 368 Ordinary Shares at $46.38 per share on the same date, with the price converted from CHF 37.62 per share using a rate of USD 1.00 = CHF 0.8111.
  • Post-transaction ownership: Following both purchases, Gross directly beneficially owned 38,485 Ordinary Shares.
  • ESPP shares included: The 38,117 share figure reported after the first transaction includes 170 shares acquired under the Amrize Ltd 2025 Employee Stock Purchase Plan on June 30, 2026.
  • Transaction codes: Both transactions are coded "P," indicating open-market purchases.

Mario Gross Purchases Amrize Ltd Ordinary Shares in Two Transactions

According to the Form 4 filed with the SEC on August 13, 2026, Mario Gross, serving as Chief Supply Chain Officer of Amrize Ltd, reported two purchases of the company's Ordinary Shares on August 11, 2026. The first transaction involved 3,200 shares acquired at a price of $46.62 per share, bringing his directly held beneficial ownership to 38,117 shares following that transaction. The filing notes that this figure includes 170 shares previously acquired under the Amrize Ltd 2025 Employee Stock Purchase Plan on June 30, 2026.

The second purchase on the same date consisted of 368 Ordinary Shares. The filing discloses that this transaction was executed in Swiss Francs at CHF 37.62 per share, converted to $46.38 per share using the transaction date exchange rate of USD 1.00 = CHF 0.8111. After this second purchase, Gross's total direct beneficial ownership stood at 38,485 Ordinary Shares, according to the filing.

The Form 4 was filed by Hans Weinburger as Attorney-in-Fact on behalf of Gross, whose address is listed as Grafenauweg 8, Zug, Switzerland. No derivative securities transactions were reported. Both transactions carry transaction code "P," indicating purchases on the open market.

What Was Disclosed

Amrize Ltd's Chief Supply Chain Officer Mario Gross reported two open-market purchases of Ordinary Shares totaling 3,568 shares on August 11, 2026, at prices of $46.62 and $46.38 per share, resulting in direct beneficial ownership of 38,485 shares.