0001564590-15-003918 Sample Contracts

MAST THERAPEUTICS, INC. AMENDMENT OF STOCK OPTION AGREEMENTS

Stock Option Agreement • May 11th, 2015 • Mast Therapeutics, Inc. • Pharmaceutical preparations • California

• Contract Type
  Stock Option Agreement
• Filed
  May 11th, 2015
• Company
  Mast Therapeutics, Inc.
• Industry
  Pharmaceutical preparations
• Jurisdiction
  California

THIS AMENDMENT OF STOCK OPTION AGREEMENTS (the “Amendment”) is made and entered into by and between Mast Therapeutics, Inc., a Delaware corporation (the “Company”), and Patrick L. Keran (the “Optionee”). This Amendment shall become effective as set forth in Section 4 below.