1. Includes 90,000 shares of Exelixis, Inc. common stock that will be issued to the Reporting Person upon vesting of restricted stock units and 1,008 shares of common stock acquired on April 30, 2018, pursuant to the Exelixis, Inc. 2000 Employee Stock Purchase Plan.
3. Represents the weighted average sales price. The shares were sold in multiple transactions at prices ranging from $21.95 to $22.90. 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.
4. Represents the weighted average sales price. The shares were sold in multiple transactions at prices ranging from $22.98 to $23.75. 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.
5. Represents shares of Exelixis, Inc. common stock under the Exelixis, Inc. 401(k) Plan, pursuant to a plan statement dated as of May 2, 2018.
6. The option, representing the right to purchase a total of 112,500 shares of Exelixis, Inc. common stock, became fully exercisable on September 28, 2015.