On Holding AG disclosed an insider ownership change by Helena Helmersson involving the company’s Class A shares. The Form 4 was filed on June 29, 2026, and reports a transaction dated June 25, 2026. According to the filing’s explanatory note, the reported transaction involved shares withheld at Helmersson’s election to satisfy tax withholding obligations tied to the release of shares underlying restricted stock units. Those RSUs had been granted on June 22, 2026, and were previously reported on Helmersson’s Form 4 filed on June 24, 2026. The filing emphasizes that the transaction was not a discretionary open-market trade by Helmersson. Rather, it was an administrative tax-withholding event connected to the settlement or release of equity compensation. In Form 4 reporting, this type of transaction is commonly associated with tax withholding on vested or released stock-based awards, rather than a voluntary sale reflecting an insider’s investment decision. The provided filing text does not specify the number of Class A shares withheld, the deemed price per share, the transaction code, or Helmersson’s beneficial ownership after the transaction. It also does not provide additional vesting schedule details beyond identifying the underlying restricted stock units as granted on June 22, 2026. The filing was signed on Helmersson’s behalf by Zlatina Iliev, attorney-in-fact, on June 29, 2026.