Form 4 Filing for EXELIXIS, INC.

Tomas J. Heyman, a director at EXELIXIS, INC., acquired 8,367 restricted stock units (RSUs) on May 27, 2026. These RSUs, granted under the 2017 Equity Incentive Plan, are the economic equivalent of common stock and will vest on May 27, 2027, contingent upon continued service. Following this transaction, Heyman holds a total of 50,649 shares, which includes 17,455 shares set to be issued upon the vesting of other RSUs. The reported transaction has a price per share of $0.00, as it involves the grant of RSUs rather than a market purchase. This filing is a Form 4, indicating a change in beneficial ownership.