US cybersecurity startup Armis said Monday that it’s preparing for an initial public offering in 2026 after closing a $200 million funding round that valued it at $4.2 billion. Armis’s latest funding round was led by General Catalyst and Alkeon Capital Management LLC, along with existing investors Brookfield Technology Partners and Georgian, the company said in an emailed statement. The company said it’ll use the money to invest in product innovation and to take advantage of potential acquisitio...