X0306 4 2021-06-18 0 0001593899 Atea Pharmaceuticals, Inc. AVIR 0001353128 Duncan Barbara Gayle 125 SUMMER STREET 16TH FLOOR BOSTON MA 02110 1 0 0 0 Stock Option (Right to Buy) 23.39 2021-06-18 4 A 0 34025 0.00 A 2031-06-17 Common Stock 34025 34025 D The option vests and becomes exercisable in twelve (12) equal monthly installments following June 18, 2021, such that the option shall be fully vested on the first anniversary of the date of grant, subject to the Reporting Person's continued service through each such vesting date. /s/ Andrea Corcoran, as Attorney-in-Fact for Barbara Gayle Duncan 2021-06-21