Form 4 Filing for Mercer William S

This filing details Form 4 transactions for Mercer William S, a director at Ategrity Specialty Insurance Co Holdings. On June 11, 2026, Mercer William S acquired 980 shares of Common Stock. Additionally, 980 Restricted Stock Units were disposed of, with each unit representing a contingent right to one share of the Issuer's Common Stock. These units are subject to vesting over several years, with remaining units vesting in installments on June 11, 2027 and June 11, 2028. The post-transaction holdings include 8,280 shares of Common Stock and 1,961 Restricted Stock Units.