X0306 4 2021-03-04 0 0001754068 Allovir, Inc. ALVR 0001818068 Brenner Malcolm C/O ALLOVIR, INC. 139 MAIN STREET, SUITE 500 CAMBRIDGE MA 02142 1 0 0 0 Common Stock 2021-03-04 4 S 0 15961 34.6666 D 900391 I See Footnote Common Stock 2021-03-04 4 S 0 13876 35.4587 D 886515 I See Footnote Common Stock 2021-03-04 4 S 0 8814 36.5787 D 877701 I See Footnote Common Stock 2021-03-04 4 S 0 10947 37.4125 D 866754 I See Footnote Common Stock 2021-03-05 4 S 0 23660 30.3903 D 843094 I See Footnote Common Stock 2021-03-05 4 S 0 15289 31.2692 D 827805 I See Footnote Common Stock 2021-03-05 4 S 0 6141 32.1885 D 821664 I See Footnote Common Stock 2021-03-05 4 S 0 2300 33.3063 D 819364 I See Footnote Common Stock 2021-03-05 4 S 0 701 34.4036 D 818663 I See Footnote Common Stock 30197 D This sale was effected pursuant to a Rule 10b5-1 trading plan adopted on December 3, 2020. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $34.06 to $35.05. Full information regarding the number of shares sold at each separate price can be furnished to the SEC staff upon request. Shares held by Salt Free LP. The Reporting Person has a controlling interest in Salt Free LP and may be deemed to beneficially own these securities. The Reporting Person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein, and the inclusion of these shares in this report shall not be deemed an admission of beneficial ownership of all of the reported shares for purposes of Section 16 or for any other purpose. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $35.06 to $36.05. Full information regarding the number of shares sold at each separate price can be furnished to the SEC staff upon request. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $36.06 to $37.04. Full information regarding the number of shares sold at each separate price can be furnished to the SEC staff upon request. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $37.07 to $37.80. Full information regarding the number of shares sold at each separate price can be furnished to the SEC staff upon request. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $29.90 to $30.89. Full information regarding the number of shares sold at each separate price can be furnished to the SEC staff upon request. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $30.90 to $31.89. Full information regarding the number of shares sold at each separate price can be furnished to the SEC staff upon request. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $31.90 to $32.86. Full information regarding the number of shares sold at each separate price can be furnished to the SEC staff upon request. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $32.90 to $33.86. Full information regarding the number of shares sold at each separate price can be furnished to the SEC staff upon request. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $34.01 to $34.97. Full information regarding the number of shares sold at each separate price can be furnished to the SEC staff upon request. /s/ Brett Hagen, as Attorney-in-Fact 2021-03-08