0001193125-17-301622 Sample Contracts

AGREEMENT AND PLAN OF MERGER by and among: DIMENSION THERAPEUTICS, INC., a Delaware corporation; ULTRAGENYX PHARMACEUTICAL INC., a Delaware corporation; and MYSTIC RIVER MERGER SUB INC., a Delaware corporation Dated as of October 2, 2017

Merger Agreement • October 3rd, 2017 • Ultragenyx Pharmaceutical Inc. • Pharmaceutical preparations • Delaware

• Contract Type
  Merger Agreement
• Filed
  October 3rd, 2017
• Company
  Ultragenyx Pharmaceutical Inc.
• Industry
  Pharmaceutical preparations
• Jurisdiction
  Delaware

THIS AGREEMENT AND PLAN OF MERGER (this “Agreement”) is made and entered into as of October 2, 2017, by and among: ULTRAGENYX PHARMACEUTICAL INC., a Delaware corporation (“Parent”); MYSTIC RIVER MERGER SUB INC., a Delaware corporation and a direct, wholly-owned subsidiary of Parent (“Purchaser”); and DIMENSION THERAPEUTICS, INC., a Delaware corporation (the “Company”). Certain capitalized terms used in this Agreement are defined in Exhibit A.