Transaction Details

Footnotes

Represents the weighted average sales price. The shares were sold in multiple transactions at prices ranging from $42.10 to $42.13. Reporting Person undertakes to provide Exelixis, Inc., any security holder of Exelixis, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote 1 to this Form 4. | Includes 374,029 shares of Exelixis, Inc. common stock ("Common Stock") that will be issued to the Reporting Person upon vesting of restricted stock units ("RSUs") and performance-based restricted stock units ("PSUs"). Each RSU is the economic equivalent of one share of Common Stock and each PSU represents a contingent right to receive one share of Common Stock. | Represents the weighted average sales price. The shares were sold in multiple transactions at prices ranging from $41.87 to $41.99. Reporting Person undertakes to provide Exelixis, Inc., any security holder of Exelixis, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote 3 to this Form 4. | Represents the weighted average sales price. The shares were sold in multiple transactions at prices ranging from $41.77 to $41.79. Reporting Person undertakes to provide Exelixis, Inc., any security holder of Exelixis, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote 4 to this Form 4. | Represents the weighted average sales price. The shares were sold in multiple transactions at prices ranging from $42.51 to $42.71. Reporting Person undertakes to provide Exelixis, Inc., any security holder of Exelixis, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote 5 to this Form 4.