Nathan B. Theurer SEC Filing Summary

On March 13, 2026, Nathan B. Theurer, VP - Global Controller and CAO of FIRST SOLAR, INC., acquired 131 shares of Common Stock through the vesting of restricted stock units. Subsequently, on March 16, 2026, he sold 35 shares of Common Stock for $200.80 per share. On March 17, 2026, he sold the remaining 96 shares for $199.53 per share. These transactions, particularly the sale on March 17, were conducted under a Rule 10b5-1 trading plan established on May 15, 2025. The sale on March 16 was to cover tax withholding obligations associated with the vesting of restricted stock units. The initial acquisition of shares was part of a standard equity grant vesting schedule.