Arch Insurance has promoted Angie Strack to senior vice president for national accounts, whilst Lisa Lang and Muhammed Kazmi have been appointed as regional leaders. Strack will also serve as the division's chief underwriting officer, responsible for the team's underwriting oversight and direction. Lang will be the Eastern Zonal leader, which encompasses the northeast and southeast regions in the US, and Kazmi will be the Western Zonal leader, which includes the central, south central and west regions. The regional management and underwriting teams will be reporting to Lang and Kazmi, who will lead the portfolio management, client and broker relationships for their respective zones.