Press Release: WISeKey Reports H1 2025 Results; Updates on the Quantum Convergence Strategy Underpinned by a Strong Balance Sheet WISeKey Reports H1 2025 Results; Updates on the Quantum Convergence Strategy Underpinned by a Strong Balance Sheet Schedules Conference Call and Webcast for Friday, September 26 at 8:00 am ET (2:00 pm CET) Geneva, Switzerland -- September 23, 2025: -- Ad-Hoc announcement pursuant to Art. 53 of SIX Listing Rules -- WISeKey International Holding Ltd.