Common Contracts

RTW Master Fund, Ltd. RTW Innovation Master Fund, Ltd. RTW Venture Fund Limited c/o RTW Investments, LP New York, NY, 10011 USA Attn: Roderick Wong, M.D. Re: IPO Participation Right

Ipo Participation Right • May 22nd, 2020 • Avidity Biosciences, Inc. • Pharmaceutical preparations

• Contract Type
  Ipo Participation Right
• Filed
  May 22nd, 2020
• Company
  Avidity Biosciences, Inc.
• Industry
  Pharmaceutical preparations

This letter agreement (this “Agreement”) memorializes the agreement and understanding between RTW Master Fund, Ltd., RTW Innovation Master Fund, Ltd. and RTW Venture Fund Limited (collectively, “RTW”), on the one hand, and Avidity Biosciences, Inc., a Delaware corporation (the “Company”), on the other hand, regarding the Company’s grant to RTW of the right to participate in the Company’s future initial public offering of its equity securities on the terms, and subject to the conditions, set forth below.

RTW Master Fund, Ltd. RTW Innovation Master Fund, Ltd. RTW Venture Fund Limited c/o RTW Investments, LP 412 West 15th Street, Floor 9, New York, NY, 10011 USA Attn: Roderick Wong, M.D. Re: IPO Participation Right

Ipo Participation Right • April 3rd, 2020 • Avidity Biosciences, Inc. • Pharmaceutical preparations

• Contract Type
  Ipo Participation Right
• Filed
  April 3rd, 2020
• Company
  Avidity Biosciences, Inc.
• Industry
  Pharmaceutical preparations

This letter agreement (this “Agreement”) memorializes the agreement and understanding between RTW Master Fund, Ltd., RTW Innovation Master Fund, Ltd. and RTW Venture Fund Limited (collectively, “RTW”), on the one hand, and Avidity Biosciences, Inc., a Delaware corporation (the “Company”), on the other hand, regarding the Company’s grant to RTW of the right to participate in the Company’s future initial public offering of its equity securities on the terms, and subject to the conditions, set forth below.