Avidity Biosciences INVESTORS | INVESTMENT CALCULATOR ABOUT AVIDITY Our mission is to profoundly improve people’s lives by delivering a new class of RNA therapeutics – AOCs. Our proprietary AOCs are designed to combine the specificity of monoclonal antibodies with the precision of oligonucleotide therapies to target the root cause of diseases previously untreatable with RNA therapeutics. Our advancing and expanding pipeline includes multiple skeletal muscle programs. We are also broadening the reach of AOCs beyond muscle tissues through both internal discovery efforts and key partnerships as the company continues to deliver on the RNA revolution. Learn More The investment calculator allows you to determine the current value of an investment in a stock at a specific date in the past. Select the date, investment type, and amount options below. Click on the Submit button to view the results. You may also include the effect of dividends in the calculation. Historical performance is not indicative of future performance. Results should not be relied on for investment purposes. NASDAQRNA Investment Type AMOUNT INVESTED (IN DOLLARS) NUMBER OF SHARES PURCHASED AMOUNT TO CALCULATE DIVIDENDS REINVESTED DIVIDENDS NOT REINVESTED INVESTMENT DATE 333.00 Shares on 12/03/2020 333.00 Shares Today 1:1 Split Adjustment $10,000.00 Value on 12/03/2020 $8,041.96 Investment Value Today -19.58% Investment Performance Jan '21 Feb '21 Mar '21 Apr '21 May '21 Jun '21 Jul '21 Aug '21 Sep '21 Oct '21 Nov '21 Dec '21 $0 $5,000 $10,000 Dividends Reinvested No Dividends Reinvested Dividends Paid Out Currency in USD. Quote data delayed by at least 15 minutes. © 2021 Avidity Biosciences EXPLORE About Platform Pipeline Patients Investors Contact Careers CONTACT 10578 Science Center Dr. Suite 125 San Diego, CA 92121 info@aviditybio.com Tel: 858-401-7900 FOLLOW LEGAL Patents