X0306 4 2020-08-03 0 0001754068 Allovir, Inc. ALVR 0001457477 Hallal David C/O ALLOVIR, INC. 139 MAIN STREET, SUITE 500 CAMBRIDGE MA 02142 1 1 1 0 Chief Executive Officer Common Stock 2020-08-03 4 C 0 13420970 A 13420970 I See Footnote Common Stock 2020-08-03 4 C 0 156577 A 1120965 I See Footnote Common Stock 2020-08-03 4 C 0 738153 A 738153 I See Footnote Common Stock 2083666 D Series A-2 Convertible Preferred Stock 2020-08-03 4 C 0 20000000 D Common Stock 13420970 0 I See Footnote Series A-4 Convertible Preferred Stock 2020-08-03 4 C 0 233333 D Common Stock 156577 0 I See Footnote Series A-4 Convertible Preferred Stock 2020-08-03 4 C 0 1100000 D Common Stock 738153 0 I See Footnote Each share of convertible preferred stock automatically converted into the Issuer's Common Stock on a one-for-1.49021 basis upon the closing of the Issuer's initial public offering on August 3, 2020 and had no expiration date. Shares held by ElevateBio LLC ("ElevateBio"). The Reporting Person is the Chairman and Chief Executive Officer of ElevateBio, and may be deemed to have shared voting and investment power of the shares held by ElevateBio. 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. Shares held by The Hallal Family Irrevocable Trust 2012, for which the Reporting Person serves as trustee. 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. Shares held by Terrie A. Hallal Family Irrevocable Trust 2012, for which the Reporting Person serves as trustee. 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. /s/ Brett Hagen, as Attorney-in-Fact 2020-08-05