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          |  | 
               
               
                | Company 
                  Roster 
 
 
                     
                     
                      |  | Total 
                        Insiders  : | 29 |  |   
                      |  | Total 
                          Direct Shares : | 26,410,455 |   
                      |  | Total 
                          Indirect Shares : | 21,693,004 |   
                      |  | % 
                          Held by Insiders: | 18.56% |  | 
 |  
                |  |  
| Filer's Name | Relation | Direct Date | Direct Shares | Indirect Date | Indirect Shares |  |    Posner Brian S |  | 2025-10-01 | 8,500 |  | 0 |  |    Kerr Douglas |  | 2025-09-05 | 88,390 | 2024-09-03 | 0 |  |    Cox John |  | 2025-09-05 | 199,539 | 2025-09-05 | 72,000 |  |    Friedl-Naderer Johanna |  | 2025-09-05 | 94,873 | 2024-09-03 | 0 |  |    Lucera Erick |  | 2025-03-31 | 66,100 | 2025-03-31 | 0 |  |    Beskrovnaya Oxana |  | 2025-03-11 | 195,840 | 2020-09-17 | 0 |  |    Scalzo Richard William |  | 2025-03-11 | 122,330 | 2020-09-17 | 0 |  |    High Susanna Gatti |  | 2024-09-18 | 131,636 | 2020-09-17 | 0 |  |    Mcneill Jonathan |  | 2024-08-19 | 132,106 |  | 0 |  |    Farwell Wildon |  | 2024-08-19 | 143,222 | 2021-03-02 | 0 |  |    Brumm Joshua T |  | 2024-03-11 | 537,998 | 2020-09-17 | 0 |  |    Atlas Venture Associates Opportunity Ii, Llc | 10% Owner | 2024-03-01 | 1,458,691 | 2024-03-01 | 847,388 |  |    Atlas Venture Associates Xi, Llc | 10% Owner | 2024-02-20 | 6,815,965 | 2024-02-15 | 0 |  |    Atlas Venture Fund Xi, L.p. | 10% Owner | 2021-07-13 | 7,326,117 | 2021-07-13 | 0 |  |    Wellington Biomedical Innovation Master Investors | 10% Owner | 2020-09-21 | 1,608,785 | 2020-09-21 | 0 |  |    Kersten Dirk |  | 2020-09-21 | 0 | 2024-12-09 | 5,462,846 |  |    Cureduchenne Ventures, Llc | 10% Owner | 2020-09-21 | 602,972 | 2020-09-21 | 0 |  |    Shah Rajeev M. | 10% Owner | 2020-09-21 | 0 | 2020-09-21 | 2,805,045 |  |    Logos Global Management Lp | 10% Owner | 2020-09-21 | 0 | 2020-09-21 | 1,504,392 |  |    Gadicke Ansbert | 10% Owner | 2020-09-21 | 0 | 2020-09-21 | 91,081 |  |    Stehman-Breen Catherine | Director | 2020-09-21 | 115,713 |  | 0 |  |    Hurwitz Edward | Director, 10% Owner | 2020-09-21 | 0 | 2020-09-21 | 91,081 |  |    Lubner David Charles | Director | 2020-09-21 | 53,625 | 2020-09-21 | 0 |  |    Klein Lawrence Otto | Director | 2020-09-21 | 10,725 | 2020-09-21 | 0 |  |    Forbion Capital Fund Iv Cooperatief U.a. | 10% Owner | 2020-09-21 | 6,131,079 | 2020-09-21 | 0 |  |    Vida Ventures Ii-A, Llc | 10% Owner | 2020-09-21 | 0 | 2020-09-21 | 79,921 |  |    Subramanian Romesh | Chief Scientific Officer, 10% Owner | 2020-09-17 | 566,249 |  | 0 |  |    Atlas Venture Associates Opportunity I, Llc | 10% Owner |  | 0 | 2020-09-21 | 1,608,785 |  |    Rhodes Jason P |  |  | 0 | 2025-01-27 | 9,130,465 |  |  |